b_asr901-scg.pdf
TRANSCRIPT
-
Cisco ASR 901 Series Aggregation Services Router SoftwareConfiguration GuideFirst Published: November 10, 2011
Last Modified: November 17, 2014
Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAhttp://www.cisco.comTel: 408 526-4000 800 553-NETS (6387)Fax: 408 527-0883
Text Part Number: OL-23826-11
-
2011-2014 Cisco Systems, Inc. All rights reserved.
-
C O N T E N T S
P r e f a c e About This Guide xliii
About This Guide xliii
Document Revision History xliii
Objectives lxi
Audience lxii
Organization lxii
Conventions lxv
Related Documentation lxvi
Obtaining Documentation and Submitting a Service Request lxvi
C H A P T E R 1 Cisco ASR 901 Router Overview 1
Introduction 2
Features 2
Performance Features 2
Management Options 2
Manageability Features 3
Security Features 4
Quality of Service and Class of Service Features 4
Layer 3 Features 5
Layer 3 VPN Services 5
Monitoring Features 5
C H A P T E R 2 Licensing 7
Finding Feature Information 7
Feature Overview 8
Licenses Supported on Cisco ASR 901 Router 8
License Types 11
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 iii
-
Image Level License 11
Features Supported 11
Feature Based License 12
Port Based/Mode License 12
1588BC License 13
Port or Interface Behavior 13
Port Based License 13
Example: When Port Based License is not Installed 13
Example: When Port Based License is Installed 14
10gigUpgrade License 14
Example: When 10gigUpgrade License is not Installed 15
Example: When 10gigUpgrade License is Installed 15
Flexi License 16
Example: When Flexi License is not Installed 16
Example: When Flexi License is Installed 16
1588BC License 17
Example: When 1588BC License is not Installed 17
Example: When 1588BC License is Installed 17
Removing the License 18
Generating the License 19
Installing the License 19
Changing the License 20
Verifying the License 20
Where to Go Next 21
Additional References 21
Feature Information for Licensing 22
C H A P T E R 3 First-Time Configuration 25
Setup Mode 25
Before Starting Your Router 25
Using Setup Mode 25
Configuring Global Parameters 26
Completing the Configuration 28
Verifying the Cisco IOS Software Version 29
Configuring the Hostname and Password 29
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guideiv OL-23826-11
Contents
-
Verifying the Hostname and Password 30
C H A P T E R 4 Managing and Monitoring Network Management Features 31
Finding Feature Information 31
Network Management Features for the Cisco ASR 901 32
Cisco Active Network Abstraction (ANA) 32
SNMP MIB Support 32
Cisco Networking Services (CNS) 32
How to Configure Network Management Features on Cisco ASR 901 32
Configuring SNMP Support 32
Configuring Remote Network Management 36
Enabling Cisco Networking Services (CNS) and Zero-Touch Deployment 38
Zero-Touch Deployment 38
Image Download 39
Configuring a DHCP Server 39
Configuring a TFTP Server 41
Creating a Bootstrap Configuration 41
Enabling a TFTP Server on the Edge Router 41
Configuring the Cisco Configuration Engine 41
Configuration Examples 42
Example: Configuring SNMP Support 42
Example: Configuring Remote Network Management 42
Example: Configuring a DHCP Server 43
Example: Zero-touch Deployment 43
Alarm Port Monitoring 43
External Alarm Port Monitoring 43
Enabling Alarms 44
Enabling Syslogs 45
Enabling SNMP Traps 46
Verifying Alarm Configuration 47
Where to Go Next 48
Additional References 48
Feature Information for Monitoring and Managing the Cisco ASR 901 Router 49
C H A P T E R 5 Using the Command-Line Interface 51
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 v
Contents
-
Understanding Command Modes 51
Understanding the Help System 53
Understanding Abbreviated Commands 54
Understanding no and default Forms of Commands 54
Understanding CLI Error Messages 54
Using Command History 55
Changing the Command History Buffer Size 55
Recalling Commands 56
Disabling the Command History Feature 56
Using Editing Features 56
Enabling and Disabling Editing Features 56
Editing Commands through Keystrokes 57
Editing Command Lines that Wrap 59
Searching and Filtering Output of show and more Commands 59
Accessing the CLI 60
Accessing the CLI through a Console Connection or through Telnet 60
Saving Configuration Changes 60
C H A P T E R 6 Software Upgrade 61
Selecting a Cisco IOS Image 61
Upgrading the Cisco IOS image 61
Auto Upgrading the MCU 64
Manually Upgrading the ROMMON 65
Auto Upgrade of ROMMON 66
C H A P T E R 7 Configuring Gigabit Ethernet Interfaces 67
Configuring the Interface 67
Setting the Speed and Duplex Mode 68
Enabling the Interface 69
Modifying MTU Size on the Interface 70
Verifying the MTU Size 71
MAC Flap Control 71
Configuring MAC FLap Control 72
Configuring a Combo Port 72
Verifying the Media Type 74
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidevi OL-23826-11
Contents
-
C H A P T E R 8 Configuring Ethernet Virtual Connections 77
Finding Feature Information 78
Supported EVC Features 78
Understanding EVC Features 78
Ethernet Virtual Connections 79
Service Instances and EFPs 79
Encapsulation 80
VLAN Counters 81
Bridge Domains 81
DHCP Client on Switch Virtual Interface 82
Split-Horizon 82
Rewrite Operations 82
DHCP Snooping with Option 82 on EVC 83
Configuring EFPs 84
Default EVC Configuration 84
Configuring VLAN Counters on SVI 84
Verifying VLAN Counters Configuration on SVI 85
Configuration Guidelines 85
Creating Service Instances 86
Configuring DHCP Snooping with Option-82 on EVC 87
Configuring Per-Port Rate Limit 88
Verifying DHCP Snooping with Option 82 on EVC 89
Example: Configuring DHCP Snooping with Option 82 on EVC 90
Configuration Examples of Supported Features 91
Example: Configuring a Service Instance 91
Example: Encapsulation Using a VLAN Range 91
Example: Configuring VLAN Counters on SVI 91
Example: Two Service Instances Joining the Same Bridge Domain 92
Example: Bridge Domains and VLAN Encapsulation 92
Example: Rewrite 92
Example: Split Horizon 92
How to Configure EVC Default Encapsulation 93
Configuring EVC Default Encapsulation with Bridge-Domain 93
Configuring EVC Default Encapsulation with Xconnect 94
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 vii
Contents
-
Verifying EVC Default Encapsulation with Bridge-Domain 95
Verifying EVC Default Encapsulation with Xconnect 95
Configuration Examples for EVC Default Encapsulation 96
Example: Configuring EVC Default Encapsulation with Bridge-Domain 96
Example: Configuring EVC Default Encapsulation with Xconnect 96
Configuring Other Features on EFPs 96
EFPs and EtherChannels 96
MAC Address Forwarding, Learning and Aging on EFPs 97
Disabling MAC Address Learning on an Interface or Bridge Domain 97
Example: Configuring EFP and EtherChannels 98
Verification 99
Configuring IEEE 802.1Q Tunneling using EFPs 100
Restrictions 100
802.1Q Tunneling (QinQ) 100
Example: Configuring IEEE 802.1Q Tunneling Using EFPs 102
Routed QinQ 103
Restrictions 103
Configuration Examples for Routed QinQ 103
Example: User to Network Interface 103
Example: Network to Network Interface/Core Router 103
Bridge Domain Routing 104
Restrictions 104
Example: Configuring Bridge-Domain Routing 104
How to Configure DHCP Client on SVI 104
Configuring DHCP Client on SVI 105
Verifying DHCP Client on SVI 106
Example: Configuring DHCP Client on SVI 106
EFPs and MAC Addresses 106
EFPs and MSTP 106
Monitoring EVC 107
Configuring Switchport to EVC Mapping 109
Example: Configuring Switchport to EVC Mapping 109
Troubleshooting DHCP Snooping with Option-82 on EVC 111
Additional References 111
Feature Information for Configuring Ethernet Virtual Connections 112
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guideviii OL-23826-11
Contents
-
C H A P T E R 9 Configuring EtherChannels 115
Understanding How EtherChannels Work 115
EtherChannel Feature Overview 115
Understanding How EtherChannels Are Configured 116
EtherChannel Configuration Overview 116
Understanding Manual EtherChannel Configuration 116
Understanding IEEE 802.3ad LACP EtherChannel Configuration 116
Understanding Port-Channel Interfaces 118
Understanding Load Balancing 118
EtherChannel Configuration Guidelines and Restrictions 118
Configuring Etherchannels 119
Configuring Channel Groups 119
Configuring the LACP System Priority and System ID 120
Configuring the LACP Transmit Rate 121
Verifying the LACP Transmit Rate 122
Configuring EtherChannel Load Balancing 122
Modifying MTU Size on Port-Channel 123
Verifying the MTU Size on Port-Channel 124
EVC On Port-Channel 125
Restrictions for EVC EtherChannel 125
Configuring EVC on Port-Channel 125
Verifying the Configuration 126
Troubleshooting Scenarios for EVC on a Port-Channel 127
C H A P T E R 1 0 Configuring Ethernet OAM 129
Understanding Ethernet CFM 130
IP SLA Support for CFM 130
Configuring Ethernet CFM 130
Default Ethernet CFM Configuration 131
Ethernet CFM Configuration Restrictions and Guidelines 131
Configuring the CFM Domain 131
Configuring Multi-UNI CFM MEPs in the Same VPN 135
Configuration Examples for Multi-UNI CFM MEPs 138
Verification 139
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 ix
Contents
-
Configuring Ethernet CFM Crosscheck 140
Configuring Static Remote MEP 141
Configuring a Port MEP 142
CFM with Hardware Offloading for G.8032 144
Restrictions 144
Configuring CFM with Hardware Offloading for G.8032 145
Verifying the CFM Configuration with Hardware Offloading for G.8032 146
Configuration Examples for CFM with Hardware Offloading for G.8032 147
Configuring SNMP Traps 147
Configuring IP SLA CFM Operation 148
Manually Configuring an IP SLA CFM Probe or Jitter Operation 148
Configuring an IP SLA Operation with Endpoint Discovery 151
Configuring CFM over EFP with Cross Connect 153
Configuring CFM over EFP Interface with Cross Connect 153
Examples 155
Configuring CFM over EFP Interface with Cross ConnectPort Channel-Based Cross
Connect Tunnel 155
Examples 155
Verification 156
Configuring CFM with EVC Default Encapsulation 157
Verifying CFM with EVC Default Encapsulation 158
Example: Configuring CFM with EVC Default Encapsulation 159
Configuring Y.1731 Fault Management 159
Default Y.1731 Configuration 159
Configuring ETH-AIS 159
Configuring ETH-LCK 161
Managing and Displaying Ethernet CFM Information 164
Understanding the Ethernet OAM Protocol 166
OAM Features 167
Discovery 167
Link Monitoring 167
Remote Failure Indication 168
Remote Loopback 168
Cisco Vendor-Specific Extensions 168
OAMMessages 168
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidex OL-23826-11
Contents
-
Setting Up and Configuring Ethernet OAM 169
Default Ethernet OAM Configuration 169
Restrictions and Guidelines 169
Enabling Ethernet OAM on an Interface 170
Configuration Example 171
Enabling Ethernet OAM Remote Loopback 171
Configuring Ethernet OAM Link Monitoring 172
Configuring Ethernet OAM Remote Failure Indications 175
Configuring Ethernet OAM Templates 176
Configuration Example 179
Displaying Ethernet OAM Protocol Information 179
Verifying Ethernet OAM Configuration 180
Understanding E-LMI 182
Restrictions 182
Configuring E-LMI 183
Default E-LMI Configuration 183
Enabling E-LMI 183
Displaying E-LMI Information 184
Understanding Ethernet Loopback 185
Configuring Ethernet Loopback 185
Restrictions 185
Enabling Ethernet Loopback 186
Configuration Example 188
Configuring Y.1564 to Generate Ethernet Traffic 189
Configuring IP SLA for Traffic Generation 192
Configuration Examples 195
Example: Two-Way Measurement 195
Example: Traffic Generation Mode 196
C H A P T E R 1 1 ITU-T Y.1731 Performance Monitoring 199
Finding Feature Information 199
Prerequisites for ITU-T Y.1731 Performance Monitoring 199
Restrictions for ITU-T Y.1731 Performance Monitoring 200
Information About ITU-T Y.1731 Performance Monitoring 200
Frame Delay and Frame-Delay Variation 201
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xi
Contents
-
Frame Loss Ratio 202
On-Demand and Concurrent Operations 202
Supported Interfaces 203
Benefits of ITU-T Y.1731 Performance Monitoring 203
How to Configure ITU-T Y.1731 Performance Monitoring 204
Configuring Two-Way Delay Measurement 204
What to Do Next 206
Configuring Single-Ended Synthetic Loss Measurement 207
What to Do Next 211
Scheduling IP SLAs Operations 211
Verifying the Frame Delay and Synthetic Loss Measurement Configurations 212
Example: Verifying Sender MEP for a Two-Way Delay Measurement Operation 212
Example: Verifying Receiver MEP for a Two-Way Delay Measurement Operation 213
Example: Verifying Sender MEP for a Synthetic Loss Measurement Operation 213
Example: Verifying Ethernet CFM Performance Monitoring 214
Example: Verifying History for IP SLAs Operations 214
How to Configure IP SLAs Y.1731 On-Demand and Concurrent Operations 215
Configuring Direct On-Demand Operation on a Sender MEP 215
Configuring Referenced On-Demand Operation on a Sender MEP 216
Configuring IP SLAs Y.1731 Concurrent Operation on a Sender MEP 216
Configuration Examples for IP SLAs Y.1731 On-Demand Operations 217
Example: On-Demand Operation in Direct Mode 217
Example: On-Demand Operation in Referenced Mode 217
Additional References 218
Feature Information for ITU-T Y.1731 Performance Monitoring 219
C H A P T E R 1 2 Configuring Resilient Ethernet Protocol 221
Understanding Resilient Ethernet Protocol 221
Overview 221
Restrictions 223
Link Integrity 223
Fast Convergence 224
VLAN Load Balancing (VLB) 224
Spanning Tree Interaction 226
REP Ports 226
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexii OL-23826-11
Contents
-
Configuring Resilient Ethernet Protocol 226
Default REP Configuration 227
REP Configuration Guidelines 227
Configuring the REP Administrative VLAN 228
Configuring REP Interfaces 230
Configuring REP as Dual Edge No-Neighbor Port 233
Cisco ASR 901 Dual Rep Edge No-Neighbor Topology Example 236
Setting up Manual Preemption for VLAN Load Balancing 238
Configuring SNMP Traps for REP 239
Monitoring REP 239
Configuration Examples for REP 240
Configuring the REP Administrative VLAN: Example 240
Configuring a REP Interface: Example 240
Setting up the Preemption for VLAN Load Balancing: Example 241
Configuring SNMP Traps for REP: Example 242
Monitoring the REP Configuration: Example 242
Cisco Cisco ASR 901 Topology Example 242
C H A P T E R 1 3 Configuring MST on EVC Bridge Domain 247
Overview of MST and STP 247
Overview of MST on EVC Bridge Domain 248
Restrictions and Guidelines 248
Configuring MST on EVC Bridge Domain 250
Configuration Example for MST on EVC Bridge Domain 251
Verification 252
Troubleshooting Tips 254
C H A P T E R 1 4 Multiprotocol Label Switching 257
Configuring Multiprotocol Label Switching 257
C H A P T E R 1 5 Configuring EoMPLS 259
Understanding EoMPLS 259
Restrictions for EoMPLS 260
Configuring EoMPLS 261
EoMPLS Configuration Example 262
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xiii
Contents
-
Configuring EVC Default Encapsulation with xconnect 263
Verifying EVC Default Encapsulation with xconnect 264
Configuration Example for EVC Default Encapsulation with Xconnect 264
Configuring Pseudowire Redundancy 265
Configuration Commands 265
Port-Based EoMPLS 266
Feature Information for Configuring EoMPLS 267
C H A P T E R 1 6 Configuring MPLS VPNs 269
Understanding MPLS VPNs 269
Configuring MPLS VPNs 270
Configuration Examples for MPLS VPN 270
C H A P T E R 1 7 Configuring MPLS OAM 277
Understanding MPLS OAM 277
LSP Ping 277
LSP Traceroute 278
LSP Ping over Pseudowire 278
Configuring MPLS OAM 278
Using LSP Ping for LDP IPv4 FEC 279
Using LSP Traceroute for LDP IPv4 FEC 279
Using LSP Ping for Pseudowire 279
Using LSP Traceroute over Pseudowire 280
Displaying AToM VCCV capabilities 280
280
C H A P T E R 1 8 Configuring Routing Protocols 281
Configuring Routing Protocols 281
Changing Default Hashing Algorithm for ECMP 282
C H A P T E R 1 9 Configuring Bidirectional Forwarding Detection 283
Understanding BFD 283
Configuring BFD 283
BFD Configuration Guidelines and Restrictions 283
Configuring BFD for OSPF 284
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexiv OL-23826-11
Contents
-
Configuring BFD for OSPF on One of More Interfaces 284
Configuring BFD for OSPF on All Interfaces 285
Configuring BFD for BGP 285
Configuring BFD for IS-IS 286
Configuring BFD for IS-IS on a Single Interface 286
Configuring BFD for IS-IS for All Interfaces 287
Configuring BFD for Static Routes 288
Configuration Examples for BFD 289
BFD with OSPF on All Interfaces 289
BFD with OSPF on Individual Interfaces 290
BFD with BGP 290
BFD with IS-IS on All Interfaces 290
BFD with IS-IS on Individual Interfaces 291
BFD with Static Routes 291
C H A P T E R 2 0 Configuring T1/E1 Controllers 293
Configuring the Card Type 293
Configuring E1 Controllers 294
Support for Unframed E1 296
Configuring Support for Unframed E1 Controller 297
Configuring T1 Controllers 297
Verifying Support for Unframed E1 Controller 299
Troubleshooting Controllers 300
Troubleshooting E1 Controllers 300
Troubleshooting T1 Controllers 301
C H A P T E R 2 1 Configuring Pseudowire 303
Finding Feature Information 303
Understanding Pseudowires 304
Structure-Agnostic TDM over Packet 304
Structure-Aware TDM Circuit Emulation Service over Packet-Switched Network 304
Transportation of Service Using Ethernet over MPLS 304
Limitations 305
Hot Standby Pseudowire Support for ATM/IMA 305
Configuring Pseudowire 305
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xv
Contents
-
Configuring Pseudowire Classes 305
Configuring CEM Classes 307
Configuring a Backup Peer 309
Configuring Structure-Agnostic TDM over Packet 310
Configuring a SAToP Pseudowire with UDP Encapsulation 311
Configuring Circuit Emulation Service over Packet-Switched Network 314
Configuring a CESoPSN Pseudowire with UDP Encapsulation 315
QoS for CESoPSN over UDP and SAToP over UDP 317
Configuring Transportation of Service Using Ethernet over MPLS 318
Configuring L2VPN Pseudowire Redundancy 319
Example: Pseudowire Redundancy 322
Configuring Hot Standby Pseudowire Support for ATM/IMA 322
Configuring ATM/IMA Pseudowire Redundancy in PVC Mode 322
Configuring ATM/IMA Pseudowire Redundancy in PVP Mode 324
Configuring ATM/IMA Pseudowire Redundancy in Port Mode 325
Verifying Hot Standby Pseudowire Support for ATM/IMA 326
TDM Local Switching 327
Restrictions 327
Configuring TDM Local Switching on a T1/E1 Mode 328
Verifying Local Switching 328
Configuration Example for Local Switching 329
Configuration Examples of Hot Standby Pseudowire Support for ATM/IMA 329
Example: Configuring ATM/IMA Pseudowire Redundancy in PVC Mode 329
Example: Configuring ATM/IMA Pseudowire Redundancy in PVP Mode 330
Example: Configuring ATM/IMA Pseudowire Redundancy in Port Mode 330
Configuration Examples for Pseudowire 330
Example: TDM over MPLS Configuration-Example 330
Example: CESoPSN with UDP 333
Example: Ethernet over MPLS 334
Additional References 334
Feature Information for Configuring Pseudowire 335
C H A P T E R 2 2 Configuring Clocking 337
Configuring Clocking 337
Restrictions 337
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexvi OL-23826-11
Contents
-
Configuring Network Clock for Cisco ASR 901 Router 338
Configuring Network Clock in Global Configuration Mode 338
Configuring Network Clock in Interface Configuration Mode 341
Understanding SSM and ESMC 341
Synchronization Status Message 342
Ethernet Synchronization Messaging Channel 342
Clock Selection Algorithm 342
ESMC behavior for Port Channels 343
ESMC behavior for STP Blocked Ports 343
Configuring ESMC in Global Configuration Mode 343
Configuring ESMC in Interface Configuration Mode 344
Verifying ESMC Configuration 345
Managing Synchronization 346
Synchronization Example 347
Configuring Synchronous Ethernet for Copper Ports 347
Verifying the Synchronous Ethernet configuration 348
Troubleshooting Tips 350
Troubleshooting ESMC Configuration 352
Configuring PTP for the Cisco ASR 901 Router 352
Restrictions 353
Precision Time Protocol 353
IEEEV2 Best Master Clock Algorithm Overview 354
Information About Best Master Clock Algorithm 354
Setting System Time to Current Time 355
Configuring PTP Ordinary Clock 356
Configuring Master Ordinary Clock 356
Configuring Slave Ordinary Clock 358
Configuring PTP in Unicast Mode 361
Configuring PTP in Unicast Negotiation Mode 362
Configuring PTP in Multicast Mode 362
PTP Boundary Clock 364
Configuring PTP Boundary Clock 365
Verifying PTP modes 368
Verifying PTP Configuration on the 1588V2 Slave in Unicast Mode 371
Verifying PTP Configuration on the 1588V2 Slave in Multicast Mode 372
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xvii
Contents
-
Verifying PTP Configuration on the 1588V2 Master in Unicast Mode 374
Verifying PTP Configuration on the 1588V2 Master in Multicast Mode 375
PTP Hybrid Clock 378
Configuring a Hybrid Ordinary Clock 378
Configuring a Hybrid Boundary Clock 381
Verifying Hybrid modes 383
Configuration Examples for BMCA 384
Example: Configuring a Slave Ordinary Clock in BMCA 384
Example: Configuring a Boundary Clock in BMCA 384
SSM and PTP Interaction 385
ClockClass Mapping 385
Telecom Profiles 385
PTP Redundancy 385
Configuring Telecom Profile in Slave Ordinary Clock 386
Configuring Telecom Profile in Master Ordinary Clock 388
Verifying Telecom profile 389
Setting the TimeProperties 390
ASR 901 Negotiation Mechanism 391
Static Unicast Mode 391
VRF-Aware Precision Time Protocol 391
Configuring VRF-Aware Precision Time Protocol 391
Examples 394
Configuring ToD on 1588V2 Slave 394
1588v2 Phase Asymmetry Correction 395
Configuring Asymmetry Correction 397
Verifying 1588v2 Phase Asymmetry Correction 398
Example: Configuring 1588v2 Phase Asymmetry Correction 398
Troubleshooting Tips 398
C H A P T E R 2 3 Cisco IOS IP SLA 401
Configuring IPSLA Path Discovery 401
Example for IPSLA Path Discovery 403
Two-Way Active Measurement Protocol 405
Configuring TWAMP 406
Configuring the TWAMP Server 406
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexviii OL-23826-11
Contents
-
Configuring the TWAMP Reflector 407
Configuring the TWAMP Reflector 407
Configuration Examples for TWAMP 407
Example: Configuring the Router as an IP SLA TWAMP server 408
Example: Configuring the Router as an IP SLA TWAMP Reflector 408
C H A P T E R 2 4 Configuring QoS 409
Finding Feature Information 409
Understanding QoS 410
Modular QoS CLI 411
Input and Output Policies 412
Input Policy Maps 413
Output Policy Maps 413
Access Control Lists 414
Restrictions 414
Classification 414
Class Maps 415
The match Command 416
Classification Based on Layer 2 CoS 416
Classification Based on IP Precedence 416
Classification Based on IP DSCP 417
Classification Comparisons 418
Classification Based on QoS Groups 420
Classification Based on VLAN IDs 421
Classification Based on ACL 422
Table Maps 422
Policing 423
Individual Policing 423
Configuration Examples 424
Unconditional Priority Policing 425
Egress Policing 426
Marking 426
Congestion Management and Scheduling 427
Traffic Shaping 428
Class-Based Shaping 428
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xix
Contents
-
Port Shaping 429
Parent-Child Hierarchy 429
Class-Based Weighted Fair Queuing 430
Priority Queuing 431
Ingress and Egress QoS Functions 433
Configuring QoS 433
QoS Limitations 434
General QoS Limitations 434
Statistics Limitations 435
Propagation Limitations 435
Classification Limitations 435
Marking Limitations 437
Congestion Management Limitations 438
ACL-based QoS Restrictions 440
Improving Feature Scalability 441
TCAM with QoS 441
QoS for MPLS over MLPPP and IP over MLPPP 441
QoS for CPU-Generated Traffic 441
Egress Shaping on the MLPPP Interfaces 442
QoS Configuration Guidelines 442
Sample QoS Configuration 443
Configuring Classification 444
Creating a Class Map for Classifying Network Traffic 445
Creating a Policy Map for Applying a QoS Feature to Network Traffic 446
Attaching the Policy Map to an Interface 447
Attaching a Policy Map to a Cross-Connect EVC 448
Configuring Marking 449
Creating a Class Map for Marking Network Traffic 450
Creating a Policy Map for Applying a QoS Feature to Network Traffic 451
Attaching the Policy Map to an Interface 452
Configuring MPLS Exp Bit Marking using a Pseudowire 453
Configuration Example 454
Configuring Congestion Management 454
Configuring Low Latency Queueing 454
Configuring Multiple Priority Queueing 455
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexx OL-23826-11
Contents
-
Configuration Examples 456
Configuring Class-Based Weighted Fair Queuing (CBFQ) 457
Weighted Random Early Detection (WRED) 458
Configuring Shaping 460
Configuring Class-Based Traffic Shaping in a Primary-Level (Parent) Policy Map 460
Configuring the Secondary-Level (Child) Policy Map 461
Configuring Ethernet Trusted Mode 462
Creating IP Extended ACLs 462
Using Class Maps to Define a Traffic Class 463
Creating a Named Access List 465
What to do Next 467
TCAM with ACL 467
Configuration Examples for ACL 467
Verifying Named Access List 468
Configuration Example for Named Access List 468
Access Control Lists for IPv6 Traffic Filtering 474
Creating and Configuring an IPv6 ACL for Traffic Filtering 474
Configuration Example 475
Applying the IPv6 ACL to an Interface 476
Configuration Example 476
QoS Treatment for Performance-Monitoring Protocols 476
Cisco IP-SLAs 476
QoS Treatment for IP-SLA Probes 477
Marking 477
Queuing 477
QoS Marking for CPU-Generated Traffic 477
QoS Queuing for CPU-Generated Traffic 478
Extending QoS for MLPPP 478
Configuring Class-map for Matching MPLS EXP Bits 478
Configuring Class-map for Matching IP DSCP Value 479
Configuring Class-map for Matching MPLS EXP Bits or IP DSCP Value 480
Configuring a Policy-map 481
Attaching the Policy-map to MLPPP Interface 484
Re-marking IP DSCP Values of CPU Generated Traffic 486
Re-marking MPLS EXP Values of CPU Generated Traffic 486
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxi
Contents
-
Configuring a Policy-map to Match on CS5 and EXP4 487
Attaching the Policy-map to Match on CS5 and EXP4 to MLPPP Interface 489
Configuration Examples for Extending QoS for MPLS over MLPPP 490
Configuring Class-map for Matching MPLS EXP Bits 490
Configuring Class-map for Matching IP DSCP Value 490
Configuring Class-map for Matching MPLS EXP Bits or IP DSCP Value 490
Configuring a Policy-map 490
Configuring a Policy-map to Match on CS5 and EXP 4 491
Attaching the Policy-map to MLPPP Interface 491
Configuring Egress Shaping on the MLPPP Interfaces 492
Configuring a Class-map 492
Configuring the Policy-map with Shaping 492
Attaching the Policy-map on the MLPPP Interface 493
Verifying the Egress Shaping over MLPPP Interface 494
Example: Configuring Egress Shaping over MLPPP Interface 495
Verifying MPLS over MLPPP Configuration 495
Configuration Guidelines 496
ARP-based Classification 497
Address Resolution Protocol Classification 497
Configuring ARP Classification 498
Configuring a Class-map 498
Verifying a Class-map 499
Configuring a Policy-map 499
Verifying a Policy-map 499
Attaching a Policy-map 500
Example: Configuring ARP Classification 500
Troubleshooting Tips 501
Additional References 505
Feature Information for Configuring QoS 506
C H A P T E R 2 5 Configuring MLPPP 509
Finding Feature Information 509
Prerequisites 510
Restrictions 510
MLPPP Optimization Features 510
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxii OL-23826-11
Contents
-
Distributed Multilink Point-to-Point Protocol Offload 511
Multiclass MLPPP 511
MPLS over MLPPP 512
MPLS Features Supported for MLPPP 512
MPLS over MLPPP on PE-to-CE Links 512
MPLS over MLPPP on Core Links 513
MPLS over MLPPP on CE to PE Links 513
Configuring MLPPP Backhaul 513
Configuring the Card Type, E1 and T1 Controllers 514
Configuring a Multilink Backhaul Interface 514
Creating a Multilink Bundle 514
Configuring MRRU 515
Configuring PFC and ACFC 516
Configuring PFC 516
Configuring ACFC 517
Enabling Multilink and Identifying the Multilink Interface 518
Configuring a Serial Interface as a Member Link of a MLPPP Group 520
MLPPP Offload 521
Configuring Additional MLPPP Settings 521
Configuring MPLS over the MLPPP on a Serial Interface 521
Configuring MPLS over MLPPP for OSPF 523
Configuration Examples for MPLS over MLPPP 525
Verifying MPLS over MLPPP Configuration 526
Additional References 527
Feature Information for MLPPP 528
C H A P T E R 2 6 Onboard Failure Logging 529
Understanding OBFL 529
Configuring OBFL 530
Verifying OBFL Configuration 530
C H A P T E R 2 7 Hot Standby Router Protocol and Virtual Router Redundancy Protocol 533
Finding Feature Information 533
Information About HSRP and VRRP 534
Overview of HSRP and VRRP 534
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxiii
Contents
-
Text Authentication 534
Preemption 534
How to Configure HSRP 535
Configuring HSRP 535
Configuration Examples for HSRP 536
Example: Configuring HSRP Active Router 536
Example: Configuring HSRP Backup Router 537
Example: HSRP Text Authentication 537
How to Configure VRRP 537
Configuring VRRP 538
Configuration Examples for VRRP 539
Example: Configuring a VRRP Master Router 539
Example: Configuring a VRRP Backup Router 540
Example: VRRP Text Authentication 540
Where to Go Next 540
Additional References 540
Feature Information for HSRP and VRRP 541
C H A P T E R 2 8 Configuring Link Layer Discovery Protocol 543
Finding Feature Information 543
Restrictions for LLDP 544
Overview of LLDP 544
How to Configure LLDP 544
Configuring LLDP 544
Verifying LLDP 546
Configuration Example for LLDP 546
Example: Enabling LLDP Globally 546
Example: Configuring Hold Time 546
Example: Configuring Delay Time 546
Example: Configuring Intervals 546
Where to go Next 547
Additional References 547
Feature Information for LLDP 548
C H A P T E R 2 9 Configuring Multihop Bidirectional Forwarding Detection 549
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxiv OL-23826-11
Contents
-
Finding Feature Information 549
Restrictions for Multihop BFD 550
Information About Multihop BFD 550
Overview of Multihop BFD 550
How to Configure Multihop BFD 550
Configuring Multihop BFD Template 550
Configuring a Multihop BFD Map 551
Configuration Examples for Multihop BFD 552
Example : Configuring Multihop BFD 552
Where to Go Next 553
Additional References 553
Feature Information for Multihop BFD 554
C H A P T E R 3 0 Bit Error Rate Testing 557
Finding Feature Information 557
Prerequisites for BERT 557
Restrictions 558
Feature Overview 558
How to Configure BERT 559
Performing BERT on a T1/E1 Line 559
Terminating BERT on a T1/E1 Controller 560
Verifying BERT on a T1/E1 Controller 560
Configuration Examples 561
Additional References 561
Feature Information for Bit Error Rate Testing 562
C H A P T E R 3 1 Microwave ACM Signaling and EEM Integration 563
Finding Feature Information 563
Prerequisites for Microwave ACM Signaling and EEM Integration 564
Feature Overview 564
Benefits 565
How to Configure Microwave ACM Signaling and EEM Integration 565
Configuring Connectivity Fault Management 566
Configuring EEP Applet Using CLIs 568
Configuring Event Handler 570
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxv
Contents
-
Verifying Microwave Microwave ACM Signaling and EEM Integration Configuration 571
Configuration Examples for Microwave ACM Signaling and EEM Integration 572
Example: Configuring CFM 572
Example: Configuring EEP Applet 572
Example: Configuring Event Handler 575
Additional References 575
Feature Information for Microwave ACM Signaling and EEM Integration 576
C H A P T E R 3 2 IPv6 Support on the Cisco ASR 901 Router 579
Finding Feature Information 579
Prerequisites for IPv6 Support on the Cisco ASR 901 Router 580
Restrictions for IPv6 Support on the Cisco ASR 901 Router 580
Information About IPv6 Support on the Cisco ASR 901 Router 581
Benefits 581
Overview of IPv6 581
IPv6 Address Formats 581
IPv6 Addressing and Discovery 582
Static Configuration 583
Stateless Autoconfiguration 583
ICMPv6 583
IPv6 Duplicate Address Detection 584
IPv6 Neighbor Discovery 584
IPv4 and IPv6 Dual-Stack on an Interface 584
Routing Protocols 585
IS-IS Enhancements for IPv6 585
OSPFv3 for IPv6 585
Multiprotocol BGP Extensions for IPv6 585
Bidirectional Forwarding Detection for IPv6 585
QoS for IPv6 586
How to Configure IPv6 Support on the Cisco ASR 901 Router 586
Configuring IPv6 Addressing and Enabling IPv6 Routing 586
Configuring a Static IPv6 Route 587
Enabling Stateless Auto-Configuration 589
Implementing IPv6 on VLAN Interfaces 589
Implementing IPv6 Addressing on Loopback Interfaces 590
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxvi OL-23826-11
Contents
-
Configuring ICMPv6 Rate Limiting 591
Configuring IPv6 Duplicate Address Detection 592
Configuring IPv6 Neighbor Discovery 593
Configuring IPv6 and IPv4 Dual-Stack on the Same VLAN 594
Configuring OSPFv3 for IPv6 595
Configuring IS-IS for IPv6 596
Configuring Multiprotocol-BGP for IPv6 597
Configuring BFD for IPv6 598
Specifying a Static BFDv6 Neighbor 598
Associating an IPv6 Static Route with a BFDv6 Neighbor 599
Configuring BFDv6 and OSPFv3 601
Configuring BFDv6 for BGP 602
Implementing QoS for IPv6 603
Verifying the Configuration of IPv6 Support on the Cisco ASR 901 Router 603
Verifying IPv6 Addressing Routing 603
Verifying a Static IPv6 Route 604
Verifying a Stateless Auto-Configuration 604
Verifying IPv6 Implementation on VLAN Interfaces 604
Verifying IPv6 Implementation on Loopback Interfaces 605
Verifying ICMPv6 Configuration 605
Verifying IPv6 Duplicate Address Detection Configuration 607
Verifying IPv6 Neighbor Discovery Configuration 607
Verifying IPv6 and IPv4 Dual-Stack Configuration 608
Verifying OSPFv3 for IPv6 Configuration 609
Verifying IS-IS for IPv6 Configuration 609
Verifying Multiprotocol-BGP for IPv6 Configuration 610
Verifying BFD for IPv6 Configuration 611
Verifying BFDv6 and OSPFv3 Configuration 612
Verifying BFDv6 for BGP Configuration 612
Configuration Examples for IPv6 Support on the Cisco ASR 901 Router 613
Example: IPv6 Addressing on VLAN Interfaces 613
Example: IPv6 Addressing on Loopback Interfaces 613
Example: Customizing ICMPv6 613
Example: Configuring IPv6 Duplicate Address Detection 614
Example: Configuring IPv6 Neighborhood Discovery 614
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxvii
Contents
-
Example: Enabling IPv6 Stateless Address Autoconfiguration 614
Example: Configuring the IPv4 and IPv6 Dual-Stack 614
Example: Configuring IPv6 Static Routing 615
Example: Configuring BFD and Static Routing for IPv6 615
Example: Configuring OSPFv3 for IPv6 615
Example: Configuring BFD and OSPFv3 for IPv6 616
Example: Configuring IS-IS for IPv6 616
Example: Configuring Multiprotocol-BGP for IPv6 617
Example: Configuring BFD and Multiprotocol-BGP for IPv6 618
Troubleshooting Tips 618
Where to Go Next 619
Additional References 619
Feature Information for IPv6 Support on the Cisco ASR 901 Router 621
C H A P T E R 3 3 Labeled BGP Support 627
Finding Feature Information 627
Prerequisites for Labeled BGP Support 627
Restrictions for Labeled BGP Support 628
Overview of Labeled BGP Support 628
How to Configure Labeled BGP Support 628
Configuration Example for Labeled Support 629
Verifying Labeled BGP Support 630
Additional References 631
Feature Information for Labeled BGP Support 633
C H A P T E R 3 4 MPLS Traffic Engineering - Fast Reroute Link Protection 635
Finding Feature Information 635
Prerequisites for MPLS Traffic Engineering - Fast Reroute Link Protection 636
Restrictions for MPLS Traffic Engineering - Fast Reroute Link Protection 636
MPLS TE-FRR Link Protection Overview 637
BFD-triggered Fast Reroute 638
BFD 638
Fast Reroute 638
Link Protection 638
How to Configure Traffic Engineering - Fast Reroute Link Protection 638
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxviii OL-23826-11
Contents
-
Enabling MPLS TE-FRR on an SVI Interface 638
Enabling MPLS TE-FRR for EoMPLS on a Global Interface 639
Enabling MPLS TE-FRR for EoMPLS on an Interface 641
Enabling MPLS TE-FRR for IS-IS 642
Configuring Primary One-hop Auto-Tunnels 645
Configuring Backup Auto-Tunnels 646
Enabling Targeted LDP session over Primary one-hop Auto-Tunnels 647
Enabling BFD Triggered FRR on an SVI Interface 648
Enabling BFD Triggered FRR on a Router 649
Verification Examples 649
Verifying MPLS TE-FRR Configuration 649
Verifying Primary One-hop Auto-Tunnels 651
Verifying Backup Auto-Tunnels 652
Verifying BFD Triggered FRR Configuration 652
Configuration Examples 655
Example: Configuring MPLS TE-FRR 655
Example: Configuring Primary One-hop Auto-Tunnels 656
Example: Configuring Backup Auto-Tunnels 656
Example: Configuring BFD Triggered FRR 656
Additional References 656
Feature Information for MPLS Traffic Engineering - Fast Reroute Link Protection 657
C H A P T E R 3 5 Layer 2 Control Protocol Peering, Forwarding, and Tunneling 659
Finding Feature Information 659
Prerequisites for Layer 2 Control Protocol Peering, Forwarding, and Tunneling 660
Restrictions for Layer 2 Control Protocol Peering, Forwarding, and Tunneling 660
Layer 2 Control Protocol Forwarding 660
Layer 2 Control Protocol Tunneling 661
How to Configure Layer 2 Control Protocol Peering, Forwarding, and Tunneling 662
Configuring Layer 2 Peering 662
Configuring Layer 2 Forwarding 664
Configuring Layer 2 Tunneling 666
Verifying Layer 2 Peering 667
Verifying Layer 2 Forwarding 668
Verifying Layer 2 Tunneling 668
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxix
Contents
-
Configuration Examples 669
Example: Configuring Layer 2 Peering 669
Example: Configuring Layer 2 Forwarding 669
Example: Configuring Layer 2 Tunneling 670
Additional References 672
Feature Information for Layer 2 Control Protocol Peering, Forwarding, and Tunneling 673
C H A P T E R 3 6 Configuring Inverse Muliplexing over ATM 675
Finding Feature Information 675
Prerequisites 675
Restrictions 676
Information About Inverse Muliplexing over ATM 676
How to Configure IMA 676
Configuring ATM IMA on T1/E1 Interface 676
Configuring ATM IMA over MPLS 678
Configuring the T1/E1 Controller 678
Configuring an ATM IMA Interface 679
Configuring ATM over MPLS Pseudowire Interface 680
Configuring a Port Mode Pseudowire 680
Configuring an N-to-1 VCC Cell Mode 681
Configuring an N-to-1 vPC Cell Mode 682
ATM AAL5 SDU VCC Transport 683
Verifying IMA Configurations 684
How to Configure ATM Class of Service 684
Configuring Constant Bit Rate 685
Configuring Unspecified Bit Rate 685
Configuring Unspecified Bit Rate Plus 686
Configuring Variable Bit Rate for Real/Non-Real Time Traffic 687
Configuration Examples 688
Example: Creating an IMA Interface 688
Example: Configuring a Port Mode Pseudowire 689
Example: Configuring an N-to-1 VCC Cell Mode 689
Example: Configuring an N-to-1 VPC Cell Mode 689
Example: Configuring CBR 689
Example: Configuring UBR 690
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxx OL-23826-11
Contents
-
Example: Configuring UBR Plus 690
Example: Configuring VBR for Real Time Traffic 690
Example: Configuring VBR for Non-Real Time Traffic 690
Configuring Marking MPLS Experimental Bits 690
Creating a Policy-map for PVP/PVC/ATM IMA Interface 690
Applying the Policy-map 691
Applying a Policy map on PVC and PVP 691
Applying a Policy map on ATM IMA Interface 693
Creating a Table-map 694
Creating a Policy-map for SVI Interface 695
Applying a Service Policy on SVI Interface 696
Additional References 697
Feature Information for Inverse Multiplexing over ATM 698
C H A P T E R 3 7 IPv6 over MPLS: 6PE and 6VPE 699
Finding Feature Information 699
Prerequisites 700
Restrictions 700
Feature Overview 700
Benefits of 6PE and 6VPE 701
IPv6 on Provider Edge Routers 701
IPv6 on VPN Provider Edge Routers 702
Components of MPLS-based 6VPE Network 702
Supported Features 703
Scalability Numbers 704
How to Configure IPv6 over MPLS: 6PE and 6VPE 704
Configuring 6PE 704
Configuring 6VPE 707
Setting up IPv6 Connectivity from PE to CE Routers 707
Setting up MP-BGP Peering to the Neighboring PE 708
Setting up MPLS/IPv4 Connectivity with LDP 709
Creating IPv6 VRFs on PE Routers 710
Configuring IPv6-only VRF 710
Configuring Dual-stack VRF 711
Verifying IPv6 over MPLS: 6PE and 6VPE Configuration 712
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxxi
Contents
-
Configuration Examples 715
Example: Configuring 6PE 715
Example: Configuring 6VPE 716
Additional References 716
Feature Information for IPv6 over MPLS: 6PE and 6VPE 718
C H A P T E R 3 8 Storm Control 719
Finding Feature Information 719
Prerequisites for Storm Control 719
Restrictions for Storm Control 720
Information About Storm Control 720
Configuring Storm Control 720
Verifying Storm Control 722
Configuring Error Disable Recovery 722
Monitoring Error Disable Recovery 723
Configuration Example for Storm Control 724
Troubleshooting Tips for Storm Control 724
Additional References 724
Feature Information for Storm Control 725
C H A P T E R 3 9 Remote Loop-Free Alternate - Fast Reroute 727
Finding Feature Information 727
Prerequisites for Remote Loop-Free Alternate - Fast Reroute 727
Restrictions for Remote Loop-Free Alternate - Fast Reroute 728
Feature Overview 729
Benefits of Remote LFA-FRR 730
Avoiding Traffic Drops 730
Pseudowire Redundancy over FRR 730
Conditions for Switchover 731
How to Configure Remote Loop-Free Alternate - Fast Reroute 731
Configuring Remote LFA-FRR for IS-IS 731
Configuring Remote LFA-FRR for OSPF 734
Configuring Remote LFA-FRR for Ethernet and TDM Pseudowires 737
Configuring Remote LFA-FRR on a Global Interface 737
Configuring Remote LFA-FRR on a GigabitEthernet Interface 738
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxxii OL-23826-11
Contents
-
Configuring Remote LFA-FRR on an SVI Interface 740
Configuring Remote LFA-FRR on IS-IS 741
Configuring LFA-FRR for EoMPLS 744
Configuring LFA-FRR for ATM/IMA 746
Configuring LFA-FRR for CESoPSN 748
Configuring LFA-FRR for SAToP 750
Verification Examples for Remote LFA-FRR 752
Verifying Remote LFA-FRR Configuration 752
Verifying Remote LFA-FRR Configuration for EoMPLS on a GigabitEthernet
Interface 754
Verifying Remote LFA-FRR Configuration for EoMPLS on an EVC Interface 755
Verifying Remote LFA-FRR Configuration on IS-IS 757
Verifying Remote LFA-FRR Configuration on ATM/IMA 757
Verifying Remote LFA-FRR Configuration on CESoPSN 757
Verifying Remote LFA-FRR Configuration on SAToP 758
Configuration Examples for Remote LFA-FRR 759
Example: Configuring Remote LFA-FRR for IS-IS 759
Example: Configuring Remote LFA-FRR for OSPF 759
Example: Configuring Remote LFA-FRR Globally 759
Example: Configuring Remote LFA-FRR on a GigabitEthernet Interface 760
Example: Configuring Remote LFA-FRR on an SVI Interface 760
Example: Configuring EoMPLS Pseudowire Redundancy over FRR 760
Example: Configuring LFA-FRR on ATM/IMA 760
Example: Configuring LFA-FRR on CESoPSN 761
Example: Configuring LFA-FRR on SAToP 761
Additional References 761
Feature Information for Remote Loop-Free Alternate - Fast Reroute 762
C H A P T E R 4 0 Digital Optical Monitoring 765
Finding Feature Information 765
Feature Overview 765
How to Enable Transceiver Monitoring 766
Examples 767
Example: Displaying Transceiver Information 767
Example: Displaying Detailed Transceiver Information 767
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxxiii
Contents
-
Example: Displaying List of Supported Transceivers 768
Example: Displaying Threshold Tables 769
Example: Displaying Threshold Violations 771
Example: Displaying Threshold Violations on a Specific Interface 771
Example: When Transceiver Monitoring is Disabled 771
Example: Displaying SFP Details 772
Additional References 773
Feature Information for Digital Optical Monitoring 773
C H A P T E R 4 1 Autonomic Networking Infrastructure 775
Autonomic Networking 775
Finding Feature Information 775
Prerequisites for Autonomic Networking 775
Restrictions for Autonomic Networking 776
Information About Autonomic Networking 776
Overview of Autonomic Networking 776
Autonomic Networking Infrastructure 777
New Device Joining the Autonomic Network 778
Working of the Registrar 779
Channel Discovery in Autonomic Networking 780
Service Discovery in Autonomic Networking 780
Autonomic Control Plane 780
IPsec on Link Local GRE IPv6 Tunnels in Autonomic Networking 780
How to Configure Autonomic Networking 781
Configuring the Registrar 781
Verifying and Monitoring Autonomic Networking Configuration 782
Configuration Examples for Autonomic Networking 784
Example: Configuring the Registrar 784
Additional References for Autonomic Networking 784
Feature Information for Autonomic Networking 784
C H A P T E R 4 2 IPv4 Multicast 785
Finding Feature Information 785
Prerequisites for IPv4 Multicast 785
Restrictions for IPv4 Multicast 786
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxxiv OL-23826-11
Contents
-
Information About IPv4 Multicast 786
Supported Protocols 787
PIM SSM for IPv4 787
Source Specific Multicast 787
Protocol Independent Multicast 787
PIM SSM Address Range 788
IGMP 788
IGMPv1 788
IGMPv2 788
IGMPv3 788
IGMP Snooping 789
IGMP Snooping Support 789
PIM SSM Mapping 790
Static SSM Mapping 790
Reverse Path Forwarding 790
IP Multicast VRF Lite 791
PIM BFD 791
Configuring IPv4 Multicast 792
Enabling IPv4 Multicast Routing 792
Configuring PIM SSM 793
Configuring PIM SSM Mapping 794
Configuring Multicast Receivers in VRF Interface 795
Configuring IGMP Snooping 795
Enabling IGMP Snooping Globally 796
Enabling IGMP Snooping on a VLAN 796
Configuring an IGMP Snooping Query 797
Disabling IGMP Snooping 799
Configuring IPv4 Multicast Routing for VRF Lite 800
Enabling a VRF Under the VLAN Interface 801
Configuring PIM BFD on an IPv4 Interface 802
Verifying IPv4 Multicast Routing 803
Verifying PIM SSM 803
Verifying PIM SSM Mapping 804
Verifying Static Mroute 805
Verifying IGMP Snooping 806
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxxv
Contents
-
Verifying IP Multicast Routing for VRF Lite 807
Verifying PIM BFD Support 810
Configuration Examples for IPv4 Multicast 811
Example: IPv4 Multicast Routing 811
Example: Configuring PIM SSM 811
Example: Configuring PIM SSM Mapping 811
Example: Configuring Rendezvous Point 812
Example: Configuring Multicast Receivers in the VRF Interface 812
Example: Configuring IGMP Snooping 812
Example: Configuring IPv4 Multicast Routing for VRF Lite 813
Example: Configuring PIM BFD on an IPv4 Interface 813
Troubleshooting Tips 814
Additional References 815
Feature Information for IPv4 Multicast 816
C H A P T E R 4 3 IPv6 Multicast 819
Finding Feature Information 819
Prerequisites for IPv6 Multicast 819
Restrictions for IPv6 Multicast 820
Information About IPv6 Multicast 820
IPv6 Multicast Groups 820
IPv6 Multicast Routing Implementation 821
Multicast Listener Discovery Protocol for IPv6 821
MLD Snooping 822
MLD Snooping Support 822
Protocol Independent Multicast 823
PIM Source Specific Multicast 824
Source Specific Multicast Mapping for IPv6 824
PIM-Sparse Mode 824
Rendezvous Point 824
IPv6 Multicast VRF Lite 825
PIM BFD 825
Configuring IPv6 Multicast 826
Enabling IPv6 Multicast Routing 826
Disabling IPv6 Multicast Forwarding 826
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxxvi OL-23826-11
Contents
-
Disabling MLD Device-Side Processing 827
Configuring MLD Protocol on an Interface 828
Configuring MLD Snooping 829
Enabling MLD Snooping Globally 830
Enabling MLD Snooping on a VLAN 830
Configuring a Static Multicast Group 831
Configuring a Multicast Router Port 832
Enabling MLD Immediate Leave 833
Configuring an MLD Snooping Query 833
Disabling MLD Listener Message Suppression 835
Configuring a Rendezvous Point 835
Configuring PIM SSM Options 835
Disabling PIM SSM Multicast on an Interface 836
Configuring IPv6 SSM Mapping 837
Configuring IPv6 Multicast Routing for VRF Lite 838
Enabling VRF Under a VLAN Interface 839
Configuring PIM BFD on an IPv6 Interface 840
Verifying IPv6 Multicast 841
Verifying MLD Snooping 849
Verifying IPv6 Multicast Routing for VRF Lite 852
Verifying PIM BFD Support 856
Configuration Examples for IPv6 Multicast 857
Example: Enabling IPv6 Multicast Routing 857
Example: Configuring IPv6 SSM Mapping 857
Example: Configuring IPv6 MLD Snooping 857
Example: Configuring Rendezvous Point 858
Example: Configuring IPv6 Multicast Routing for VRF Lite 858
Example: Configuring BFD PIM on an IPv6 Interface 859
Troubleshooting Tips 860
Additional References 860
Feature Information for IPv6 Multicast 861
C H A P T E R 4 4 Configuring Switched Port Analyzer 865
Finding Feature Information 865
SPAN Limitations and Configuration Guidelines 865
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxxvii
Contents
-
Understanding SPAN 866
Overview 866
SPAN Session 867
Source Interface 867
Destination Interface 868
Traffic Types 868
SPAN Traffic 868
Configuring SPAN 868
Creating a SPAN Session 868
Removing Sources or Destination from a SPAN Session 869
Configuration Examples for SPAN 870
Verifying Local SPAN 870
Additional References 871
Feature Information for Switched Port Analyzer 872
C H A P T E R 4 5 IP Security 873
Finding Feature Information 873
Prerequisites for IP Security 873
Restrictions for IP Security 874
Information About IP Security 874
IKE Security Protocol 874
Advanced Encryption Standard 875
Triple DES Encryption 875
Encrypted Preshared Key 875
IKE Modes 875
Supported Components 876
Configuring IP Security 877
Creating a Preshared Key 877
Creating an ISAKMP Policy 878
Creating an ISAKMP Profile 879
Defining an IPsec Transform Set 880
Creating an IPsec Profile 881
Creating a VPN Tunnel Interface 882
Configuring Static Routing 883
Verifying Static Routing 884
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexxxviii OL-23826-11
Contents
-
Enabling Dynamic Routing 884
Verifying Dynamic Routing 885
Configuration Examples for IP Security 886
Example: Creating a Preshared Key 886
Example: Creating an ISAKMP Policy 886
Example: Creating an ISAKMP Profile 887
Example: Defining an IPsec Transform Set 887
Example: Creating an IPsec Profile 887
Example: Creating a VPN Tunnel Interface 887
Example: Configuring Static Routing 888
Example: Enabling Dynamic Routing 888
Additional References 888
Related Documents 889
Standards 889
MIBs 889
RFCs 889
Technical Assistance 890
Feature Information for IP Security 890
C H A P T E R 4 6 BCP Support on MLPPP 891
BCP Support on MLPPP 891
Finding Feature Information 891
Prerequisites for BCP Support on MLPPP 891
Restrictions for BCP Support on MLPPP 892
Information About BCP Support on MLPPP 893
Supported Profiles and Protocols 893
Quality of Service 893
Bridging and Routing 894
How to Configure BCP Support on MLPPP 894
Configuring Multiple EFPs Bridged Through the Same Link 894
Configuring an EFP 894
Adding an EFP to a Multilink 895
Enabling Routing on an MLPPP Interface Running BCP 896
Configuring Multiple Encapsulated VLANs Bridged Through Different Multilinks 898
Adding an Encapsulated VLAN to Multilinks 898
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xxxix
Contents
-
Configuring QoS for BCP Support on MLPPP 899
Defining a QoS Policy 899
Applying a QoS Policy on an MLPPP Interface 901
Verifying BCP Support on MLPPP 902
Configuration Examples for BCP Support on MLPPP 903
Example: Multilink with a Single EFP 903
Example: Multilink with Multiple EFPs 904
Example: Multilink with QoS 905
Example: Multilink with Routing on an MLPPP Interface Running BCP 906
Example: Multilink Between Cisco ASR 901 Series Routers and Cisco C7600 Series
Routers 907
Example: Multilink with Maximum 10 Links 907
Additional References 911
Related Documents 911
Standards 912
MIBs 912
RFCs 912
Technical Assistance 912
Feature Information for BCP Support on MLPPP 913
C H A P T E R 4 7 ITU-T G.8032 Ethernet Ring Protection Switching 915
Finding Feature Information 915
Prerequisites for Configuring ITU-T G.8032 Ethernet Ring Protection Switching 916
Restrictions for Configuring ITU-T G.8032 Ethernet Ring Protection Switching 916
Information About Configuring ITU-T G.8032 Ethernet Ring Protection Switching 916
G.8032 Overview 916
ITU-T G.8032 Ethernet Ring Protection Switching Functionality 917
Single-Ring Topology 919
Multiple-Rings Topology 919
R-APS Control Messages 920
CFM Protocols and Link Failures 921
G.8032 Ring-Supported Commands and Functionality 921
G.8032 ERP Timers 922
Protection Switching Functionality in a Single Link Failure and Recovery 922
How to Configure ITU-T G.8032 Ethernet Ring Protection Switching 925
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexl OL-23826-11
Contents
-
Configuring the Ethernet Ring Profile 925
Configuring an Ethernet Protection Ring 926
Configuring Topology Change Notification Propagation 929
Verifying Ethernet Ring Protection Configuration 929
Troubleshooting Tips 932
Configuration Examples for ITU-T G.8032 Ethernet Ring Protection Switching 934
Example: Configuration for Ethernet Ring Protection 934
Additional References 935
Related Documents 935
Standards 935
RFCs 935
Technical Assistance 936
Feature Information for Configuring ITU-T G.8032 Ethernet Ring Protection Switching 936
C H A P T E R 4 8 Configuring NAT for IP Address Conservation 939
Finding Feature Information 939
Prerequisites for Configuring NAT for IP Address Conservation 940
Restrictions for Configuring NAT for IP Address Conservation 940
Information About Configuring NAT for IP Address Conservation 940
Overview 940
How NAT Works 941
Types of NAT 941
NAT Inside and Outside Addresses 942
Static IP Address Support 942
Supported Components 942
How to Configure NAT for IP Address Conservation 943
Configuring an Inside Source Address 943
Configuring Dynamic Translation of Inside Source Addresses Without Overload 944
Configuring Dynamic Translation of Inside Source Addresses with Overload 946
Configuring Static PAT 948
Verifying Configuration of NAT for IP Address Conservation 949
Configuration Examples for NAT for IP Address Conservation 950
Example: Configuring Inside Source Address 950
Example: Configuring Dynamic Translation of Inside Source Addresses Without Overload 950
Example: Configuring Dynamic Translation of Inside Source Addresses with Overload 950
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xli
Contents
-
Example: Configuring Static PAT 951
Additional References 951
Related Documents 951
Standards 951
RFCs 951
Technical Assistance 952
Feature Information for Configuring NAT for IP Address Conservation 952
C H A P T E R 4 9 Auto-IP 953
Auto-IP 953
C H A P T E R 5 0 IPv6 Routing: OSPFv3 Authentication Support with IPsec 955
Finding Feature Information 955
Prerequisites for IPv6 Routing: OSPFv3 Authentication Support with IPsec 955
Information About IPv6 Routing: OSPFv3 Authentication Support with IPsec 956
OSPFv3 Authentication Support with IPsec 956
How to Configure IPv6 Routing: OSPFv3 Authentication Support with IPsec 957
Configuring IPsec on OSPFv3 957
Defining Authentication on an Interface 957
Defining Authentication in an OSPFv3 Area 958
Configuration Examples for IPv6 Routing: OSPFv3 Authentication Support with IPsec 959
Example: Defining Authentication on an Interface 959
Example: Defining Authentication in an OSPFv3 Area 959
Additional References for IPv6 Routing: OSPFv3 Authentication Support with IPsec 960
Feature Information for IPv6 Routing: OSPFv3 Authentication Support with IPsec 961
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexlii OL-23826-11
Contents
-
About This Guide
This section describes the objectives, audience, organization, and conventions of this software configurationguide. It contains the following sections:
About This Guide, page xliii
Document Revision History, page xliii
Objectives, page lxi
Audience, page lxii
Organization, page lxii
Conventions, page lxv
Related Documentation, page lxvi
Obtaining Documentation and Submitting a Service Request, page lxvi
About This GuideThis section describes the objectives, audience, organization, and conventions of this software configurationguide. It contains the following sections:
Document Revision HistoryThe Document Revision History table records technical changes to this document.
Change SummaryDateDocumentNumber/Release
Initial version of the document.November2011
OL-23826-01
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xliii
-
Change SummaryDateDocumentNumber/Release
Following are the updates specific to this release:
Cisco ASR 901 supports port based licensing. This type oflicense is applicable to gigabit ethernet ports only. Ports 4 to7 are enabled by default. For Copper and SFP ports, you needto purchase separate licenses to enable them. For more detailssee, Licensing.
SL-A901-B license supports VRF-Lite. For more details see,Licensing.
The minimum time interval supported for BFD is 50 ms. Formore details, see Configuring BFD, on page 283.
Cisco ASR 901 supports MLPPP configuration. For moredetails, see Configuring MLPPP, on page 509.
January 2012OL-23826-02
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexliv OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
Structure-Agnostic TDM over Packet (SAToP) is astructure-agnostic protocol for transporting TDM usingpseudowires (PW). PW connections using SAToP aresupported.
SAToP pseudowire with UDP encapsulation is supported.
CESoPSN pseudowire with UDP encapsulation is supported.
QoS for CESoPSN over UDP and SAToP over UDPIPDSCP and IP Precedence via service-policy, and Type ofService (ToS) settings are supported in pseudowire class.
L2VPN Pseudowire Redundancy feature.
T1 Local SwitchingThis feature allows switching of Layer2 data between two CEM interfaces on the same router.
IEEE 1588-2008 (PTPv2) Ordinary Clock (OC)Master Clockmode is supported.
G.781 QL-enabled mode is supported for synchronizationclock selection to avoid timing loops in the network.
ESMCThis feature dynamically distributes clock-qualityacross synchronous ethernet links and enables selection of thebest clock in the network.
Onboard Failure Logging (OBFL)OBFL provides amechanism to store hardware, software, and environmentrelated critical data in a non-volatile memory, such as flashEPROM or EEPROM on routers. Stored OBFL data can beretrieved in the event of a crash or failure.
MAC Flap controlA MAC flap occurs when a switchreceives packets from two different interfaces, with the samesource MAC address. When a MAC flap occurs, Cisco ASR901 does Err-Disabling in one of the ports that has flapping.
May 2012OL-23826-03
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xlv
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
CFM over EFP Interface with cross connect.
IPSLA Path DiscoveryThe LSP path discovery (LPD)feature allows the IP SLAMPLSLSP to automatically discoverall the active paths to the forwarding equivalence class (FEC),and configure LSP ping and traceroute operations acrossvarious paths between the provide edge (PE) devices.
Routed QinQPop 2 configuration is supported.
Port Based EoMPLSPort mode allows a frame coming intoan interface to be packed into anMPLS packet and transportedover the MPLS backbone to an egress interface. The entireethernet frame without the preamble or FCS is transported asa single packet.
Rommon and MCU upgradeUpgradable MCU andROMMON is bundled with the IOS image. Once the IOSimage is upgraded, both the MCU and the ROMMON imagesalso get upgraded.
T1.403 remote loopbackCisco ASR 901 accepts the remoteloopback (line and payload) initiated at the far end.
Layer3 VPN over REP/MST is supported.
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexlvi OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
Following are the updates specific to this release:
DHCP client on SVIThis feature allows you to configureDHCP client on SVI interface.
HSRP/VRRPThis feature allows you to configure the HotStandby Router Protocol (HSRP) or Virtual RouterRedundancy Protocol (VRRP) protocol.
TWAMP ResponderThis feature allows you to deployTWAMP in a simplified network architecture, with thecontrol-client and the session-sender on one device and theserver and the session-reflector on another device.
Dying GaspThis feature allows you to send notificationsduring power failure, link down, router reload and linkadministratively down conditions.
Multihop BFDThis feature allows you to do subsecondforwarding failure detection for a destination with more thanone hop and up to 255 hops.
Ethernet LoopbackThis feature allows you to use per-portand per VLANEthernet loopback to test connectivity at initialstartup, to test throughput, and to test quality of service in bothdirections.
LLDPThis feature allows the network devices to advertiseinformation about themselves to other devices in the network.
Bit Error Rate TestingThis feature allows you to test theintegrity of the physical layer. For more details, see Bit ErrorRate Testing.
IPv6 SupportThis feature supports Long Term Evolution(LTE) rollouts that provides high-bandwidth data connectionfor mobile wireless devices. The Cisco ASR 901 routersupports IPv6 addressing on Switch Virtual Interface (SVI),Loopback, and Ethernet interfaces.
Labeled BGP SupportThis feature describes how to addlabel mapping information to the Border Gateway Protocol(BGP) message that is used to distribute the route on the CiscoASR 901 Series Aggregation Services Routers.
MPLS Traffic EngineeringThis feature describes the FastReroute (FRR) link protection and Bidirectional ForwardingDetection (BFD)-triggered FRR feature ofMultiprotocol LabelSwitching (MPLS) traffic engineering (TE).
August 2012OL-23826-04
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xlvii
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
Following are the updates specific to this release:
IMAThis feature allows you to configure InverseMultiplexing over ATM (IMA).
TDM Local SwitchingThis feature allows you to configureTime DivisionMultiplexing (TDM) local switching on the T1or E1 mode.
LicensingThis feature allows you to view the list of licensesavailable for the Cisco ASR 901 router. The 10gigUpgradeand Gige4portflexi licenses are available from Cisco IOSRelease 15.2(2)SNH1 onwards.
EVCThe restrictions section of the Ethernet VirtualConnections feature is updated.
L2PTThis feature allows tunneling of Ethernet protocolframes across layer 2 switching domains.
ACL-based QoSThe Access Control List (ACL) based Qosfeature provides classification based on source and destination.The current implementation of this feature supports only namedACLs.
October 2012OL-23826-05
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidexlviii OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
Following are the updates specific to this release:
IPv6 over MPLSEnables the service providers running anMPLS/IPv4 infrastructure to offer IPv6 services without anymajor changes in the infrastructure, see IPv6 overMPLS: 6PEand 6VPE, on page 699.
Remote Loop-Free Alternateprovides local protection forunicast traffic in pure IP and MPLS networks, see RemoteLoop-Free Alternate - Fast Reroute, on page 727 for moreinformation
MPLS over MLPPPAllows you to use labeled switch paths(LSPs) over MLPPP links, see Configuring MLPPP, on page509 for more information
Zero Touch ProvisioningEnables the ASR 901 router toauto configure itself, download an updated image, connect tothe network, and start the operation as soon as it is cabled andpowered up, see Managing and Monitoring NetworkManagement Features, on page 31 for more information.
Digital Optical MonitoringSupport for Digital OpticalMonitoring (DOM) for Gig Optics on ASR 901, seeManagingand Monitoring Network Management Features, on page 31for more information.
C LicensingSupports for Precision Time Protocol (PTP)Boundary Clock (BC) is introduced on the ASR 901 routers.ADVANCED TIMING(1588BC) license should be installedto use the BC feature, see Licensing for more information.
1588V2 Boundary ClockSupports for Precision TimeProtocol (PTP) Boundary Clock (BC) is introduced on theASR 901 routers, see Configuring Clocking, on page 337 formore information.
February 2013OL-23826-06
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 xlix
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
Configuring Y.1564 to Generate Ethernet TrafficY.1564 isan Ethernet service activation or performance test methodologyfor turning up, installing, and troubleshooting Ethernet-basedservices. This test methodology allows for complete validationof Ethernet service-level agreements (SLAs) in a single test.Using traffic generator performance profile, you can createthe traffic based on your requirements. The networkperformance like throughput, loss, and availability are analyzedusing Layer 2 traffic with various bandwidth profiles.
Ethernet Synthetic Loss Measurement in Y.1731Allows tomeasure the Frame Loss Ratio (FLR) in the network, that is,the ratio of frames lost to frames sent, using synthetic frames.
EVCDefault Encapsulation for QinQ andXconnectSupportsEVC default encapsulation on the Cisco ASR 901 router. Thisfeature matches and forwards all the ingress traffic on the port.The default service instance on a port is configured using theencapsulation default command.
Hot Standby Pseudowire Support for ATM and TDM AccessCircuitsImproves the availability of pseudowires bydetecting failures and handling them with minimal disruptionto the service. This feature allows the backup pseudowire tobe in a hot standby state, so that it can immediately take overif the primary pseudowire fails.
Microwave ACM Signaling and EEM IntegrationEnablesthe microwave radio transceivers to report link bandwidthinformation to an upstream Ethernet switch and take action onthe signal degradation to provide optimal bandwidth.
Multi-UNI CFM MEPs in the Same VPNServices areconfigured such that two or more bridge domains (BDs) areused to achieve UNI isolation and backhauling towardsprovider edge (PE) device. Local MEPs (with up direction)need to be configured on the UNIs (with the associated BDs)to monitor the service backhaul connection.
OSPFv3 MIBsThe OSPFV3-MIB is supported from CiscoIOS Release 15.3(2)S onwards. ThisMIBmodule is for OSPFversion 3.
Remote Loop-FreeAlternate - Fast Reroute for EoMPLSTheRemote Loop-Free Alternate - Fast Reroute for EoMPLSfeature is introduced.
March 2013OL-23826-07
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidel OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
TCAM in Cisco ASR 901 RouterEffective with Cisco IOSRelease 15.3(2)S, the Ternary Content Addressable Memory(TCAM) is allocated and deallocated dynamically, whichimproves both feature scalability and the efficiency of usageof TCAM.
Traffic Engineering - Fast Reroute for EoMPLSThe TrafficEngineering - Fast Reroute for EoMPLS feature is introduced.
Y.1731 Performance MonitoringProvides standards-basedEthernet performance monitoring as outlined in the ITU-TY-1731 specification and interpreted by the Metro EthernetForum (MEF).
Combo Port Media Type SelectStarting with Cisco IOSRelease 15.3(2)S, the Cisco ASR 901 router supports selectionof combo ports as the media type. A combo port is consideredas a single interface with dual front ends (an RJ-45 connectorand an SFP module connector).
ConfigurableMTU on Physical InterfaceStarting with CiscoIOS Release 15.3(2)S, the Cisco ASR 901 router supportsmodification of MTU size on physical interface.
Disabling MAC Address Learning on an Interface or BridgeDomainStarting with Cisco IOS Release 15.3(2)S, you cancontrol MAC address learning on an interface or VLAN tomanage the available MAC address table space by controllingwhich interfaces or VLANs can learn MAC addresses.
Layer 3 Ping in Customer EVCStarting with Cisco IOSRelease 15.3(2)S, pop 2 configuration is supported on layer 2and layer 3 operations. Additionally, it is supported onGigabitEthernet and port channel interfaces.
Sub-second Link OAM TimersStarting with Cisco IOSRelease 15.3(2)S, the Cisco ASR 901 router supportssub-second OAM timers.
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 li
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
Autonomic NetworkingAutonomic networking is supportedfrom Cisco IOS Release 15.3(2)S onwards. It makes devicesmore intelligent and simplifies the interface between theoperator and Network Management System (NMS) system,by providing a strong abstraction across the network,distributed on each device. It also automatically provides allrelevant best practices, and keeps them up to date, without theneed for human intervention.
Storm ControlThe Storm Control feature prevents trafficon a LAN from being disrupted by a broadcast, multicast, orunknown unicast storm on one of a port.
Egress PolicingEgress policing can be classified based onQoS-groups, DSCP, and precedence value. For QoS-groupsto work at egress, you should map the traffic at ingress to aspecific QoS-group value.
MPLS Traffic Engineering (TE)Fast Reroute (FRR) LinkProtectionSupport for CESoPSN, SAToP, and ATM/IMAwas added from Cisco IOS Release 15.3(3)S onwards.
Multiaction Ingress Policer on EVCEffective with CiscoIOS Release 15.3(3)S, the Cisco ASR 901 supports policingingress traffic over the cross connect EVC, similar to bridgedomain service policy.
Y.1731 Performance MonitoringEffective with Cisco IOSRelease 15.3(3)S, the Cisco ASR 901 router supports ITU-TY.1731 performance monitoring on the following interfaces:
SLM support on the EVC cross connect
SLM support on the Port-Channel EVC cross connect
DMM and SLM support on the EVC BD for both the upand down MEPs
SLM support on the EVC cross connect for both the upand down MEPs
RFC 3107 Labeled BGP Support for TDM PseudowireTheRFC 3105 labeled BGP is supported for TDM pseudowirefrom Cisco IOS Release 15.3(3)S onwards.
Support for Digital Optical Monitoring (DOM) for 10 GigOpticsEffective with Cisco IOS Release 15.3(3)S, CiscoASR 901 supports DOM for both 1G and 10G SFPs.
July 2013OL-23826-08
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidelii OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
1588v2 Hybrid ClockTo improve the clock quality, you caneither improve the oscillator class or reduce the number ofhops between the master and the slave. In PTP hybrid mode,the oscillator class is improved by using a physical layer clock(sourced from a stratum-1 clock) instead of the availableinternal oscillator. The PTP hybrid mode is supported forordinary clock (in slave mode only) and boundary clock.
Dual REP Edge No-NeighborEffective with Cisco IOSrelease 15.4.(1)S, you can configure the non-REP switch facingports on a single device as dual edge no-neighbor ports. Theseports inherit all properties of edge ports, and overcome thelimitation of not converging quickly during a failure.
EoMPLS/TDMPseudowire Redundancy over FRREffectivewith Cisco IOS Release 15.4(1)S, support was added forEoMPLS/TDM pseudowire redundancy over FRR.
Ethernet loopback (NOSTG CLI and terminal loopback)Effective with Cisco IOS Release 15.4(1)S, the Cisco ASR901 supports internal loopback on Bridge-domain EFPs.
IPv4 MulticastDescribes how to configure IP multicast inan IPv4 network. IP multicast is an efficient way to usenetwork resources, especially for bandwidth-intensive servicessuch as audio and video.
IPv6MulticastDescribes how to configure basic IPmulticastin an IPv6 network.
Extending QoS over MLPPP InterfaceEffective with CiscoIOS Release 15.4(1)S, the QoS functionality on the MLPPPinterface is extended to support:
QoS for MPLS over MLPPP
QoS for CPU generated traffic
Redundant PTP instances as per G.8265.1PTP redundancyis an implementation on different clock nodes by which thePTP slave clock node interacts with multiple master ports suchas grandmaster, boundary clock nodes, and so on. A new servomode is defined under PTP to support high PDV scenarios(when the PDVs exceed G.8261 standard profiles).
November2013
OL-23826-09
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 liii
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
REP over LAGEffective with Cisco IOS Release 15.4(1)S,the Cisco ASR 901 supports REP over port-channel.
Switched Port Analyzer (SPAN)Effective with Cisco IOSRelease 15.4(1)S, the Cisco ASR 901 supports Local SPAN.Local SPAN supports a SPAN session entirely within oneswitch. You can analyze network traffic passing through portsor VLANs by using SPAN to send a copy of the traffic toanother port on the switch that has been connected to a networkanalyzer or other monitoring or security devices. SPAN copies(or mirrors) traffic received or sent (or both) on source portsto a destination port for analysis.
Y.1564 over EVC CrossConnectEffective with Cisco IOSrelease 15.4.(01)S, traffic can be generated over cross connectinterface. Figure 10-3 shows the Traffic Generator topologyover cross connect describing the traffic flow in the externaland internal modes.
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guideliv OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
March 2014OL-23826-10
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 lv
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
802.1ad for EVC Cross ConnectEffective with Cisco IOSrelease 15.4 (2) S, the Cisco ASR 901 Router supportsconfiguring EVC default encapsulation with xconnect.
ACL-based QoSEffective with Cisco IOS release 15.4 (2)S,the Cisco ASR 901 Router supports ACL-basedQoS on Layer4. This feature allows you to configure the layer 3 or layer 4options while configuring the ACL for QoS on ingress only.Layer 3 or layer 4 options like ToS, source port, and destinationport are supported.
Auto-IPEffective with Cisco IOS release 15.4 (2)S, theCisco ASR 901 Router supports Auto-IP feature. The auto-IPfeature automatically provides IP addresses to the nodesinserted into a ring. In ring topology, when a device is insertedinto the ring, the neighboring node interfaces require manualreconfiguration. The auto-IP feature addresses the problem ofmanually reconfiguring nodes during insertion, deletion, andmovement of nodes within the ring.
BCP Support on MLPPPThe BCP Support on MLPPPfeature enables forwarding of Ethernet frames over serialnetworks, and provides a high-speed extension of enterpriseLAN backbone traffic through a metropolitan area.
BGP -Accumulated IGPThe BGPAccumulated IGP featureis an optional nontransitive Border Gateway Protocol (BGP)path attribute. The attribute type code for the accumulatedinterior gateway protocol (AIGP) attribute is assigned by theInternet Assigned Numbers Authority (IANA). The value fieldof the AIGP attribute is defined as a set of type, length, value(TLV) elements. The AIGP TLV contains the AIGP metric.
G.8032 at Interface LevelThe ITU-T G.8032 Ethernet RingProtection Switching feature implements protection switchingmechanisms for Ethernet layer ring topologies. This featureuses the G.8032 Ethernet Ring Protection (ERP) protocol,defined in ITU-T G.8032, to provide protection for Ethernettraffic in a ring topology, while ensuring that no loops arewithin the ring at the Ethernet layer. The loops are preventedby blocking traffic on either a predetermined link or a failedlink.
IGMP SnoopingIGMP snooping allows a router to examineIGMP packets and make forwarding decisions based on theircontent. Using IGMP snooping, the router intercepts IGMPmessages from the host and updates its multicast tableaccordingly.
IP SecurityThe IP Security feature enables you to configure
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidelvi OL-23826-11
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
the Internet Key Exchange (IKE) protocol for basic IP Security(IPsec) Virtual Private Networks (VPNs). IKE is a keymanagement protocol standard that is used in conjunction withthe IPsec standard. IPsec is an IP security feature that providesrobust authentication and encryption of IP packets.
IPv6 Services: Extended Access Control ListsThe standardACL functionality in IPv6 is similar to standard ACLs in IPv4.Access lists determine what traffic is blocked and what trafficis forwarded at router interfaces and allow filtering based onsource and destination addresses and inbound interface. Eachaccess list has an implicit deny statement at the end. IPv6ACLsare defined and their deny and permit conditions are set usingthe ipv6 access-list command with the deny and permitkeywords in global configuration mode.
LicensingLicensing information about the new variants ofthe Cisco ASR 901 10G Router (A901-6CZ-FS-A andA901-6CZ-FS-D) is added to the licensing document.
MLD SnoopingMLD is a protocol used by IPv6 multicastrouters to discover the presence of multicast listeners (nodeslooking to receive IPv6 multicast packets) on its directlyattached links, and to discover which multicast packets are ofinterest to neighboring nodes.
Network Address TranslationEffective with Cisco IOSRelease 15.4(2)S, you can configure Network AddressTranslation (NAT) for IP address conservation. This modulealso provides information about the benefits of configuringNAT for IP address conservation.
TWAMP RFC ComplianceThe TWAMP RFC compliancefeature supports RFC 5357 which specifies a Two-Way ActiveMeasurement Protocol (TWAMP), based on the One-wayActive Measurement Protocol (OWAMP), that adds two-wayor round-trip measurement capabilities.
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide OL-23826-11 lvii
About This GuideDocument Revision History
-
Change SummaryDateDocumentNumber/Release
July 2014OL-23826-11
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guidelviii OL-23826-11
About This GuideDocument Revision History
-
Change S