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Dell PowerEdge Command Line Reference Guide for the M I/O Aggregator 9.9(0.0)

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  • Dell PowerEdge Command Line Reference Guide for the M I/O Aggregator 9.9(0.0)

  • Notes, cautions, and warningsNOTE: A NOTE indicates important information that helps you make better use of your computer.

    CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

    WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

    Copyright 2015 Dell Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. Dell and the Dell logo are trademarks of Dell Inc. in the United States and/or other jurisdictions. All other marks and names mentioned herein may be trademarks of their respective companies.

    2015 - 09

    Rev. A00

  • Contents

    1 About this Guide.............................................................................................................16Objectives......................................................................................................................................................................... 16Audience........................................................................................................................................................................... 16Conventions......................................................................................................................................................................16

    Information Icons.........................................................................................................................................................17

    2 Before You Start............................................................................................................ 18Operational Modes............................................................................................................................................................18Default Settings................................................................................................................................................................ 18Other Auto-Configured Settings....................................................................................................................................... 19

    DCB Support...............................................................................................................................................................19FCoE Connectivity...................................................................................................................................................... 19iSCSI Operation...........................................................................................................................................................19Link Aggregation........................................................................................................................................................ 20Uplink Failure Detection..............................................................................................................................................20VLANs........................................................................................................................................................................20

    Where to Go From Here....................................................................................................................................................21

    3 CLI Basics..................................................................................................................... 22Accessing the Command Line.......................................................................................................................................... 22Multiple Configuration Users............................................................................................................................................ 22Navigating the CLI............................................................................................................................................................23Obtaining Help..................................................................................................................................................................23Using the Keyword no Command..................................................................................................................................... 25Filtering show Commands................................................................................................................................................ 25Command Modes.............................................................................................................................................................26

    4 File Management...........................................................................................................28boot system gateway....................................................................................................................................................... 28boot system stack-unit.....................................................................................................................................................28cd.....................................................................................................................................................................................29copy................................................................................................................................................................................. 29copy running-config startup-config...................................................................................................................................31delete................................................................................................................................................................................ 31dir.....................................................................................................................................................................................32format flash......................................................................................................................................................................32HTTP Copy via CLI...........................................................................................................................................................33logging coredump stack-unit............................................................................................................................................ 34pwd.................................................................................................................................................................................. 34rename............................................................................................................................................................................. 35restore factory-defaults....................................................................................................................................................35show boot system............................................................................................................................................................ 37

    3

  • show file........................................................................................................................................................................... 37show file-systems.............................................................................................................................................................38show os-version............................................................................................................................................................... 39show running-config........................................................................................................................................................ 40show version..................................................................................................................................................................... 41upgrade boot....................................................................................................................................................................43upgrade system................................................................................................................................................................44

    5 Control and Monitoring................................................................................................. 46asset-tag.......................................................................................................................................................................... 46clear alarms...................................................................................................................................................................... 46clear command history..................................................................................................................................................... 47configure.......................................................................................................................................................................... 47debug cpu-traffic-stats.................................................................................................................................................... 48debug ifm trace-flags....................................................................................................................................................... 48disable.............................................................................................................................................................................. 49enable...............................................................................................................................................................................49end...................................................................................................................................................................................50exit...................................................................................................................................................................................50ftp-server enable.............................................................................................................................................................. 51ftp-server topdir............................................................................................................................................................... 51ftp-server username........................................................................................................................................................ 52hostname......................................................................................................................................................................... 53ip telnet server enable...................................................................................................................................................... 53ip telnet source-interface................................................................................................................................................. 53line................................................................................................................................................................................... 54ping..................................................................................................................................................................................55reload............................................................................................................................................................................... 56service timestamps...........................................................................................................................................................57show alarms..................................................................................................................................................................... 58show command-history....................................................................................................................................................58show configuration lock....................................................................................................................................................59show cpu-traffic-stats......................................................................................................................................................60show debugging................................................................................................................................................................61show diag..........................................................................................................................................................................61show environment............................................................................................................................................................62show inventory.................................................................................................................................................................63show memory...................................................................................................................................................................64show processes cpu.........................................................................................................................................................65show processes ipc flow-control...................................................................................................................................... 67show processes memory..................................................................................................................................................69show revision.................................................................................................................................................................... 71show server-interfaces......................................................................................................................................................71show system.................................................................................................................................................................... 72show tech-support........................................................................................................................................................... 74show uplink brief...............................................................................................................................................................76

    4

  • show util-threshold cpu.................................................................................................................................................... 78show util-threshold memory............................................................................................................................................. 78ssh-peer-stack-unit.......................................................................................................................................................... 79telnet................................................................................................................................................................................79telnet-peer-stack-unit...................................................................................................................................................... 80terminal length................................................................................................................................................................. 80terminal monitor................................................................................................................................................................ 81terminal xml.......................................................................................................................................................................81trace route........................................................................................................................................................................82undebug all....................................................................................................................................................................... 83write.................................................................................................................................................................................83

    6 u-Boot.......................................................................................................................... 85boot change.....................................................................................................................................................................85boot selection...................................................................................................................................................................85boot show net config retries.............................................................................................................................................86boot write net config retries.............................................................................................................................................86boot zero..........................................................................................................................................................................86default gateway................................................................................................................................................................ 87enable...............................................................................................................................................................................87help...................................................................................................................................................................................87ignore enable password.................................................................................................................................................... 88ignore startup-config........................................................................................................................................................89interface management ethernet ip address...................................................................................................................... 89no default gateway...........................................................................................................................................................89no interface management ethernet ip address................................................................................................................. 90reload............................................................................................................................................................................... 90show boot blc...................................................................................................................................................................90show boot selection.......................................................................................................................................................... 91show bootflash................................................................................................................................................................. 91show bootvar................................................................................................................................................................... 92show default gateway.......................................................................................................................................................93show interface management ethernet..............................................................................................................................93show interface management port config..........................................................................................................................93syntax help....................................................................................................................................................................... 94

    7 Data Center Bridging (DCB)..........................................................................................95Fibre Channel over Ethernet for FC Flex IO Modules....................................................................................................... 95advertise dcbx-appln-tlv...................................................................................................................................................96advertise dcbx-tlv............................................................................................................................................................ 96bandwidth-percentage..................................................................................................................................................... 97clear dcbx counters..........................................................................................................................................................98clear ets counters.............................................................................................................................................................98clear pfc counters............................................................................................................................................................ 99dcb-enable....................................................................................................................................................................... 99dcb enable pfc-queues................................................................................................................................................... 100

    5

  • dcb enable auto-detect on-next-reload.......................................................................................................................... 100dcb-map stack-unit all stack-ports all............................................................................................................................. 103dcb pfc-shared-buffer-size............................................................................................................................................. 103dcb pfc-total-buffer-size.................................................................................................................................................104dcb-buffer-threshold ..................................................................................................................................................... 105dcb-policy buffer-threshold (Global Configuration)......................................................................................................... 105service-class buffer shared-threshold-weight................................................................................................................. 106dcbx-port role................................................................................................................................................................. 107dcbx version................................................................................................................................................................... 108debug dcbx.....................................................................................................................................................................109fc-map............................................................................................................................................................................109fcoe-map.........................................................................................................................................................................110fcoe priority-bits............................................................................................................................................................... 111iscsi priority-bits...............................................................................................................................................................112keepalive..........................................................................................................................................................................112interface vlan (NPIV proxy gateway)............................................................................................................................... 113pfc mode on.................................................................................................................................................................... 114pfc no-drop queues......................................................................................................................................................... 114pfc priority....................................................................................................................................................................... 115priority-group...................................................................................................................................................................116priority-group bandwidth pfc........................................................................................................................................... 117priority-pgid..................................................................................................................................................................... 118qos-policy-output ets...................................................................................................................................................... 119scheduler......................................................................................................................................................................... 119show dcb........................................................................................................................................................................ 120show interface dcbx detail............................................................................................................................................... 121show interface ets.......................................................................................................................................................... 123show interface pfc.......................................................................................................................................................... 127show interface pfc statistics........................................................................................................................................... 129show qos dcb-map......................................................................................................................................................... 130show stack-unit stack-ports ets details........................................................................................................................... 131show stack-unit stack-ports pfc details.......................................................................................................................... 132

    8 Dynamic Host Configuration Protocol.......................................................................... 134clear ip dhcp client statistics........................................................................................................................................... 134debug ip dhcp client events............................................................................................................................................ 135debug ip dhcp client packets.......................................................................................................................................... 135ip address dhcp...............................................................................................................................................................136release dhcp interface..................................................................................................................................................... 137renew dhcp interface...................................................................................................................................................... 137show ip dhcp client statistics.......................................................................................................................................... 138show ip dhcp lease..........................................................................................................................................................138

    9 FC Flex IO Modules..................................................................................................... 140Fibre Channel over Ethernet for FC Flex IO Modules...................................................................................................... 140NPIV Proxy Gateway for FC Flex IO Modules................................................................................................................. 140

    6

  • description (for FCoE maps)...........................................................................................................................................140fabric............................................................................................................................................................................... 141fabric-id vlan................................................................................................................................................................... 142fcf-priority.......................................................................................................................................................................143fc-map............................................................................................................................................................................ 143fcoe-map........................................................................................................................................................................ 144fka-adv-period................................................................................................................................................................ 145interface vlan (NPIV proxy gateway)...............................................................................................................................146keepalive......................................................................................................................................................................... 147show fc switch................................................................................................................................................................147show fcoe-map...............................................................................................................................................................148show npiv devices.......................................................................................................................................................... 150show running-config fcoe-map....................................................................................................................................... 152

    10 FC FLEXIO FPORT.....................................................................................................153active-zoneset ............................................................................................................................................................... 154fabric.............................................................................................................................................................................. 154fc alias............................................................................................................................................................................ 155fc zone........................................................................................................................................................................... 156fc zoneset.......................................................................................................................................................................156fcoe-map........................................................................................................................................................................ 157feature fc........................................................................................................................................................................ 158show fc alias................................................................................................................................................................... 158show fc ns...................................................................................................................................................................... 159show fc switch............................................................................................................................................................... 160show fc zone................................................................................................................................................................... 161show fc zoneset............................................................................................................................................................. 162show fcoe-map...............................................................................................................................................................163

    11 FIP Snooping.............................................................................................................. 164clear fip-snooping database interface vlan...................................................................................................................... 164

    clear fip-snooping statistics...................................................................................................................................... 164feature fip-snooping................................................................................................................................................. 165fip-snooping enable.................................................................................................................................................. 165fip-snooping fc-map................................................................................................................................................. 166fip-snooping port-mode fcf.......................................................................................................................................166

    show fip-snooping statistics............................................................................................................................................167debug fip-snooping......................................................................................................................................................... 170show fip-snooping config................................................................................................................................................170show fip-snooping enode.................................................................................................................................................171show fip-snooping fcf...................................................................................................................................................... 171show fip-snooping sessions.............................................................................................................................................172show fip-snooping statistics............................................................................................................................................173show fip-snooping system.............................................................................................................................................. 176show fip-snooping vlan................................................................................................................................................... 177

    7

  • 12 Internet Group Management Protocol (IGMP)............................................................178IGMP Commands............................................................................................................................................................178IGMP Snooping Commands............................................................................................................................................ 179clear ip igmp groups........................................................................................................................................................ 179debug ip igmp................................................................................................................................................................. 179ip igmp group-join-limit................................................................................................................................................... 180ip igmp querier-timeout...................................................................................................................................................180ip igmp query-interval...................................................................................................................................................... 181ip igmp query-max-resp-time........................................................................................................................................... 181ip igmp snooping enable..................................................................................................................................................182ip igmp snooping fast-leave.............................................................................................................................................182ip igmp snooping flood.................................................................................................................................................... 183ip igmp snooping last-member-query-interval................................................................................................................. 183ip igmp snooping mrouter................................................................................................................................................184ip igmp snooping querier................................................................................................................................................. 185ip igmp version................................................................................................................................................................185show ip igmp groups....................................................................................................................................................... 186show ip igmp interface.................................................................................................................................................... 187show ip igmp snooping mrouter...................................................................................................................................... 188

    13 Interfaces................................................................................................................... 189Port Interface Commands...............................................................................................................................................189Port Channel Commands................................................................................................................................................ 189Time Domain Reflectometer (TDR) Commands..............................................................................................................190Virtual LAN (VLAN) Commands..................................................................................................................................... 190auto vlan.........................................................................................................................................................................190channel-member............................................................................................................................................................. 191clear counters................................................................................................................................................................. 192clear mac-address-table dynamic....................................................................................................................................193default vlan-id................................................................................................................................................................. 193description...................................................................................................................................................................... 194feature fc........................................................................................................................................................................195flowcontrol......................................................................................................................................................................195interface..........................................................................................................................................................................197interface ManagementEthernet......................................................................................................................................198interface port-channel.................................................................................................................................................... 198interface range................................................................................................................................................................199interface vlan.................................................................................................................................................................. 201intf-type cr4 autoneg..................................................................................................................................................... 202keepalive........................................................................................................................................................................ 202minimum-links................................................................................................................................................................ 203monitor interface............................................................................................................................................................204mtu................................................................................................................................................................................ 206name.............................................................................................................................................................................. 207negotiation auto............................................................................................................................................................. 208

    8

  • remote-fault-signaling rx................................................................................................................................................ 209show config (INTERFACE mode)....................................................................................................................................210show config (from INTERFACE RANGE mode).............................................................................................................. 210show config (from INTERFACE VLAN mode)..................................................................................................................211show config (from PROTOCOL LLDP mode).................................................................................................................. 211show interfaces...............................................................................................................................................................212show interfaces configured.............................................................................................................................................215show interfaces description............................................................................................................................................ 216show interfaces port-channel..........................................................................................................................................217show interfaces stack-unit............................................................................................................................................. 220show interfaces status....................................................................................................................................................221show interfaces switchport............................................................................................................................................ 222show tdr.........................................................................................................................................................................223show vlan.......................................................................................................................................................................224shutdown....................................................................................................................................................................... 226source (port monitoring for 40-Gigabit Ethernet)...........................................................................................................227speed (for 1000/10000 interfaces).................................................................................................................................227stack-unit portmode.......................................................................................................................................................228tdr-cable-test.................................................................................................................................................................229vlan tagged (CMC)........................................................................................................................................................ 230vlan untagged (CMC)..................................................................................................................................................... 231

    14 IPv4 Routing.............................................................................................................. 233clear tcp statistics.......................................................................................................................................................... 233debug ip dhcp................................................................................................................................................................ 233debug ip icmp.................................................................................................................................................................234ip route...........................................................................................................................................................................235management route.........................................................................................................................................................236show arp........................................................................................................................................................................ 237show ip interface............................................................................................................................................................239show ip management-route............................................................................................................................................240show ip multicast-cam stack-unit....................................................................................................................................241show ip route..................................................................................................................................................................242show tcp statistics......................................................................................................................................................... 244

    15 iSCSI Optimization.....................................................................................................247advertise dcbx-app-tlv................................................................................................................................................... 247iscsi aging time............................................................................................................................................................... 247iscsi cos..........................................................................................................................................................................248iscsi enable.....................................................................................................................................................................249iscsi priority-bits............................................................................................................................................................. 249iscsi profile-compellent...................................................................................................................................................250iscsi target port..............................................................................................................................................................250show iscsi........................................................................................................................................................................251show iscsi sessions.........................................................................................................................................................252show iscsi sessions detailed............................................................................................................................................252

    9

  • 16 Isolated Networks......................................................................................................254io-aggregator isolated-network vlan...............................................................................................................................254show io-aggregator isolated-networks .......................................................................................................................... 254

    17 Link Aggregation Control Protocol (LACP)................................................................ 256auto-lag enable.............................................................................................................................................................. 256clear lacp counters.........................................................................................................................................................256debug lacp......................................................................................................................................................................257delay-restore abort-threshold.........................................................................................................................................258io-aggregator auto-lag enable........................................................................................................................................ 258lacp link-fallback member............................................................................................................................................... 259lacp long-timeout........................................................................................................................................................... 259lacp port-priority............................................................................................................................................................ 260port-channel mode.........................................................................................................................................................260port-channel-protocol lacp..............................................................................................................................................261show interfaces port-channel.........................................................................................................................................262show io-aggregator auto-lag status................................................................................................................................264show lacp.......................................................................................................................................................................265show link-bundle-distribution port-channel.................................................................................................................... 266show port-channel-flow................................................................................................................................................. 267

    18 Layer 2.......................................................................................................................269MAC Addressing Commands..........................................................................................................................................269Virtual LAN (VLAN) Commands.................................................................................................................................... 269clear mac-address-table dynamic...................................................................................................................................269description......................................................................................................................................................................270mac-address-table aging-time........................................................................................................................................270mac-address-table static.................................................................................................................................................271mac-address-table station-move refresh-arp................................................................................................................. 272show cam mac stack-unit...............................................................................................................................................272show mac-address-table................................................................................................................................................ 273

    19 Link Layer Discovery Protocol (LLDP)........................................................................276advertise dot3-tlv...........................................................................................................................................................276advertise management-tlv..............................................................................................................................................277clear lldp counters...........................................................................................................................................................277clear lldp neighbors.........................................................................................................................................................278debug lldp interface........................................................................................................................................................ 278disable............................................................................................................................................................................ 279hello............................................................................................................................................................................... 280multiplier........................................................................................................................................................................ 280protocol lldp (Configuration)........................................................................................................................................... 281protocol lldp (Interface)...................................................................................................................................................281show lldp neighbors........................................................................................................................................................282show lldp statistics......................................................................................................................................................... 282

    10

  • 20 Object Tracking......................................................................................................... 284IPv4 Object Tracking Commands................................................................................................................................... 284

    debug track..............................................................................................................................................................284delay........................................................................................................................................................................ 285description............................................................................................................................................................... 285show running-config track....................................................................................................................................... 286show track............................................................................................................................................................... 286threshold metric.......................................................................................................................................................288track interface ip routing.......................................................................................................................................... 289track interface line-protocol..................................................................................................................................... 289track ip route metric threshold................................................................................................................................. 290track ip route reachability..........................................................................................................................................291track resolution ip route............................................................................................................................................292

    IPv6 Object Tracking Commands................................................................................................................................... 293show track ipv6 route.............................................................................................................................................. 293track interface ipv6 routing...................................................................................................................................... 294track ipv6 route metric threshold............................................................................................................................. 295track ipv6 route reachability..................................................................................................................................... 296track resolution ipv6 route........................................................................................................................................297

    21 Port Monitoring......................................................................................................... 299description..................................................................................................................................................................... 299monitor session..............................................................................................................................................................300show config.................................................................................................................................................................... 301show monitor session..................................................................................................................................................... 301show running-config monitor session.............................................................................................................................302source (port monitoring)................................................................................................................................................ 302

    22 Quality of Service (QoS)........................................................................................... 304Per-Port QoS Commands.............................................................................................................................................. 304Policy-Based QoS Commands........................................................................................................................................304bandwidth-percentage...................................................................................................................................................304description..................................................................................................................................................................... 305dot1p-priority................................................................................................................................................................. 305policy-aggregate............................................................................................................................................................ 306policy-map-output..........................................................................................................................................................307qos-policy-output...........................................................................................................................................................308rate-shape......................................................................................................................................................................308service-class bandwidth-percentage............................................................................................................................. 309service-class dot1p-mapping...........................................................................................................................................310service-class dynamic dot1p........................................................................................................................................... 310service-policy output....................................................................................................................................................... 311service-queue................................................................................................................................................................. 312show qos dcb-map......................................................................................................................................................... 313show qos dot1p-queue-mapping..................................................................................................................................... 314

    11

  • show qos qos-policy-output............................................................................................................................................314

    23 Security..................................................................................................................... 316AAA Accounting Commands...........................................................................................................................................316

    aaa accounting..........................................................................................................................................................316aaa accounting suppress........................................................................................................................................... 317aaa authorization commands.................................................................................................................................... 318aaa authorization config-commands......................................................................................................................... 318aaa authorization exec.............................................................................................................................................. 319accounting................................................................................................................................................................ 319show accounting......................................................................................................................................................320

    Authentication and Password Commands.......................................................................................................................321aaa authentication enable......................................................................................................................................... 321aaa authentication login............................................................................................................................................322banner exec............................................................................................................................................................. 323banner login..............................................................................................................................................................324banner motd.............................................................................................................................................................325debug radius.............................................................................................................................................................326debug tacacs+......................................................................................................................................................... 326exec-banner............................................................................................................................................................. 327ip radius source-interface......................................................................................................................................... 327ip tacacs source-interface........................................................................................................................................328login authentication..................................................................................................................................................328

    RADIUS Commands....................................................................................................................................................... 329radius-server deadtime............................................................................................................................................ 329radius-server host.................................................................................................................................................... 330radius-server key.......................................................................................................................................................331radius-server retransmit........................................................................................................................................... 332radius-server timeout............................................................................................................................................... 332show privilege.......................................................................................................................................................... 333

    Suppressing AAA Accounting for Null Username Sessions............................................................................................. 333TACACS+ Commands.................................................................................................................................................... 333

    TACACS+ Accounting.............................................................................................................................................. 333tacacs-server host...................................................................................................................................................335tacacs-server key.....................................................................................................................................................335timeout login response............................................................................................................................................. 336

    SSH Server and SCP Commands...................................................................................................................................337enable password.......................................................................................................................................................337enable restricted...................................................................................................................................................... 338service password-encryption................................................................................................................................... 338show ip ssh.............................................................................................................................................................. 339show ip ssh client-pub-keys..................................................................................................................................... 339show ip ssh rsa-authentication.................................................................................................................................340show users...............................................................................................................................................................340ssh............................................................................................................................................................................ 341username................................................................................................................................................................. 342

    12

  • 24 Simple Network Management Protocol (SNMP) and Syslog..................................... 344SNMP Commands......................................................................................................................................................... 344show snmp.....................................................................................................................................................................344show snmp engineID...................................................................................................................................................... 345show snmp group...........................................................................................................................................................346show snmp user.............................................................................................................................................................346snmp-server community.................................................................................................................................................347snmp-server context......................................................................................................................................................349snmp-server enable traps...............................................................................................................................................349snmp-server engineID....................................................................................................................................................350snmp-server group..........................................................................................................................................................351snmp-server host...........................................................................................................................................................352snmp-server user...........................................................................................................................................................355snmp-server view.......................................................................................................................................................... 356

    25 Stacking Commands................................................................................................. 358power-cycle stack-unit...................................................................................................................................................358reset stack-unit..............................................................................................................................................................359show system stack-ports...............................................................................................................................................360show system stack-unit fanout.......................................................................................................................................361show system stack-unit iom-mode.................................................................................................................................362show system stack-unit iom-uplink-speed......................................................................................................................362show system stack-unit stack-group..............................................................................................................................363stack-unit iom-mode...................................................................................................................................................... 363stack-unit iom-mode uplink-speed................................................................................................................................. 364stack-unit priority...........................................................................................................................................................365stack-unit renumber.......................................................................................................................................................366

    26 Storm Control............................................................................................................367io-aggregator broadcast storm-control...........................................................................................................................367show io-aggregator broadcast storm-control status...................................................................................................... 368storm-control PFC/LLFC...............................................................................................................................................368storm-control multicast (Interface)................................................................................................................................ 369storm-control broadcast (Interface)...............................................................................................................................369show storm-control unknown-unicast............................................................................................................................ 370storm-control unknown-unicast (Interface)....................................................................................................................370

    27 System Time..............................................................................................................372calendar set....................................................................................................................................................................372clock read-calendar........................................................................................................................................................ 373clock set.........................................................................................................................................................................373clock summer-time date................................................................................................................................................. 374clock summer-time recurring..........................................................................................................................................375clock timezone............................................................................................................................................................... 376clock update-calendar.................................................................................................................................................... 377

    13

  • ntp server.......................................................................................................................................................................377show calendar................................................................................................................................................................ 378show clock..................................................................................................................................................................... 379

    28 Uplink Failure Detection (UFD)..................................................................................380clear ufd-disable.............................................................................................................................................................380debug uplink-state-group................................................................................................................................................381defer-timer......................................................................................................................................................................381description..................................................................................................................................................................... 382downstream................................................................................................................................................................... 382downstream auto-recover..............................................................................................................................................383downstream disable links................................................................................................................................................383enable............................................................................................................................................................................ 384show running-config uplink-state-group.........................................................................................................................385show uplink-state-group................................................................................................................................................ 385uplink-state-group..........................................................................................................................................................386upstream........................................................................................................................................................................ 387

    29 Virtual Link Trunking (VLT)........................................................................................389back-up destination........................................................................................................................................................389clear vlt statistics........................................................................................................................................................... 390lacp ungroup member-independent................................................................................................................................390peer-link port-channel.....................................................................................................................................................391show vlt backup-link...................................................................................................................................................... 392show vlt brief................................................................................................................................................................. 392show vlt detail................................................................................................................................................................ 393show vlt mismatch......................................................................................................................................................... 393show vlt role...................................................................................................................................................................394show vlt statistics.......................................................................................................................................................... 394stack-unit iom-mode......................................................................................................................................................396system-mac................................................................................................................................................................... 396unit-id.............................................................................................................................................................................397vlt domain.......................................................................................................................................................................397vlt-peer-lag port-channel............................................................................................................................................... 398

    30 Debugging and Diagnostics....................................................................................... 399Offline Diagnostic Commands........................................................................................................................................ 399Hardware Commands.....................................................................................................................................................399clear hardware stack-unit...............................................................................................................................................400diag stack-unit............................................................................................................................................................... 400hardware watchdog........................................................................................................................................................ 401offline stack-unit............................................................................................................................................................ 402show diag.......................................................................................................................................................................403show hardware stack-unit..............................................................................................................................................405show hardware counters interface.................................................................................................................................. 413show hardware buffer interface...................................................................................................................................... 415

    14

  • show hardware system-flow........................................................................................................................................... 416show hardware buffer-stats-snapshot............................................................................................................................ 419show hardware stack-unit buffer-stats