equallogic_configuration_guide examples cisco dell 54xx

8/8/2019 EqualLogic_Configuration_Guide EXAMPLES CISCO DELL 54xx

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Dell EqualLogic Configuration Guide Page i

Dell

EqualLogic

Conf igurat ionGuide

A gu ide t o bu i ld ing an

iSCSI based SAN so lut ion

w i t h Del l EqualLogic

PS Series A rrays


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THIS WHITE PAPER IS FOR INFORMATI/ONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL

INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND.

Dell and EqualLogic are trademarks of Dell, Inc.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their

products. Dell disclaims proprietary interest in the marks and names of others.

2009DellInc.Allrightsreserved.Reproductioninanymannerwhatsoeverwithouttheexpress

writtenpermission

of

Dell,

Inc.

is

strictly

forbidden.

For

more

information,

contact

Dell.

Dell EqualLogic Configuration Guide Page ii


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TableofContents

1 Introduction..................................................................................................................................................... 6

2

EqualLogicInfrastructure

Requirements.........................................................................................................

6

3 NetworkConfigurationandDesignConsiderations........................................................................................ 6

4 GeneralInfrastructureConfiguration.............................................................................................................. 8

4.1 ArraytoSwitchInfrastructure................................................................................................................... 8

4.1.1 SingleSwitch/SingleArrayController................................................................................................ 8

4.1.2 SingleSwitch/DualArrayController.................................................................................................. 8

4.1.3 DualSwitch/SingleArrayController.................................................................................................. 9

4.1.4 DualSwitch/DualArrayController.................................................................................................... 9

4.2 HosttoSwitchInfrastructure.................................................................................................................. 10

4.2.1 SingleInitiatorperServer................................................................................................................ 10

4.2.2 MultipleInitiatorsperHost/SingleSwitch...................................................................................... 11

4.2.3 MultipleInitiatorsperHost/DualSwitch......................................................................................... 11

4.3 SwitchtoSwitchConnections................................................................................................................. 12

4.3.1 StackableSwitches.......................................................................................................................... 12

4.3.2 NonStackableSwitches.................................................................................................................. 12

4.4

PuttingIt

All

Together

.............................................................................................................................

13

4.4.1 FullyRedundantSAN....................................................................................................................... 13

4.4.2 PartiallyRedundantSANConfigurations......................................................................................... 14

5 M1000eBladeChassisIntegration................................................................................................................ 17

5.1 GeneralGuidelinesforStackableSwitches............................................................................................. 17

5.2 M1000eSwitchI/OModuleConfiguration............................................................................................. 17

5.2.1 SingleM1000eEnclosureIntegration............................................................................................. 17

5.2.2 MultipleM1000eEnclosureSolutions............................................................................................ 18

5.3 M1000eEthernetPassThroughI/OModule.......................................................................................... 19

5.4 ExternalTierStacking.............................................................................................................................. 19

5.5 StacktoStackInterconnect..................................................................................................................... 19

5.5.1 10GbEUplinksRecommendations.................................................................................................. 19

5.5.2 1GbEUplinksRecommendations.................................................................................................... 20

Dell EqualLogic Configuration Guide Page iii


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5.6 AdditionalResources............................................................................................................................... 22

AppendixA: GeneralRequirementsforSwitchesWhenUsedwithEqualLogicPSSeriesArrays.......................... 23

AppendixB: PowerConnect54xxConfiguration.................................................................................................... 25

AppendixC: PowerConnecct62xxConfiguration................................................................................................... 29

AppendixD: CiscoIOSBasedSwitchConfiguration............................................................................................... 33

Dell EqualLogic Configuration Guide Page iv


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Dell EqualLogic Configuration Guide Page v

ReleaseNotes

January2009 InitialreleaseofDellEqualLogicConfigurationGuideFebruary2009 Added

o M1000eIntegration


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Dell EqualLogic Configuration Guide Page 6

1 IntroductionTheDellEqualLogicConfigurationGuideisprovidedasanaidtohelpstorageadministratorsdeterminehowbesttobuildaniSCSIinfrastructureforusewithinanEqualLogicSANsolution. Thisdocumentwillfocusonconfigurationbest

practices,connectionrules,generalswitchconfigurationparameters,andotherhelpfulinformation. Thisdocument

shouldnotbeconsideredastatementofsupportforanyspecificconfiguration. Actualviabilityofanyconfigurationwill

dependonthecapabilitiesoftheindividualcomponents(switches,initiators,etc.)thatmakeuptheSANinfrastructure.

Thisdocument

should

be

used

strictly

as

aguide

in

planning

an

EqualLogic

SAN

solution.

2 EqualLogicInfrastructureRequirementsDellwillsupportanyswitchinfrastructurecomponentwithinanEqualLogicSANsolutionassumingitmeetsminimum

standards(DefinedinAppendixA)requiredtosupporthighperformanceiSCSItraffic. Dellwillprovidefullsupportto

resolvecustomerissueswithintheSANsolution. Ifaninfrastructurecomponentisidentifiedascausinganissue,the

customermayberequiredtodirectlycontactthatcomponentvendorforfurthersupport.

3Network

Configuration

and

Design

Considerations

Eachcontrolmodulehasthreenetworkinterfaceports,labeledeth0,eth1,andeth2.Adualcontrolmodulearray

providesthreepairsofnetworkinterfaces.Forexample,eth0onControlModule0(CM0)andeth0onControlModule

1(CM1)isapair.OnlyoneportinapairisactiveforI/Oatonetime. Allportsareconsideredactiveonasinglecontroller

atatime.

Inadditiontotherequirementsandrecommendationsdescribedinthefollowingtables,alltheusualrulesforproper

networkconfigurationapplytothegroupmembers.Generalnetworkconfigurationisbeyondthescopeofthis

document.

Requirement DescriptionAtleastonenetworkconnection Anarraymusthaveatleastonefunctioningnetworkinterfaceconnectedtoanetwork(throughanetworkswitch,ifpossible).Whenyourunthesetuputility,

youwillassignanIPaddressandsubnetmasktothisinterface.

ConnectivitytogroupIPaddress

Eacharraymusthaveatleastonefunctioningnetworkinterfacethatisonthe

samesubnetasthegroupIPaddress.

Switchconnectivity Inasinglesubnetgroupinwhichthearraysareconnectedtomultipleswitches,theremustbenetworkconnectivitybetweentheswitches.

FlowControlenabledonswitchesandNICs

EnableFlowControloneachswitchportthathandlesiSCSItraffic.Ifyourserver

isusingasoftwareiSCSIinitiatorandNICcombinationtohandleiSCSItraffic,you

mustalsoenableFlowControlontheNICstoobtainanyperformancebenefit.PS

SeriesstoragearrayswillcorrectlyrespondtoFlowControl.

Table1:NetworkRequirements

Recommendation Description


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Recommendation DescriptionRedundantnetworkPaths

Usingamultipathingsolutionhelpstoensurethatnosinglepointoffailureexists

betweenhostsandarrays.MPIOimplementationsshouldbeavailableformost

modernoperatingsystemenvironments.

Forreplication,areliable,adequatelysized

network

link

Foreffectiveandpredictablereplication,besurethatthenetworklinkbetween

theprimaryandsecondarygroupsisreliableandprovidessufficientbandwidthfor

copying

data.

NoSTPfunctionalityonswitchportsthatconnectendnodes

DonotuseSpanningTree(STP)onswitchportsthatconnectendnodes(iSCSI

initiatorsorstoragearraynetworkinterfaces).However,ifyouwanttouseSTPor

RapidSTP(preferabletoSTP),youshouldenabletheportsettingsavailableon

someswitchesthatlettheportimmediatelytransitionintoSTPforwardingstate

uponlinkup.Thisfunctionalitycanreducenetworkinterruptionsthatoccurwhen

devicesrestart,andshouldonlybeenabledonswitchportsthatconnectend

nodes.

Note:TheuseofSpanningTreewhenusingmultipleindependentsinglecableconnection

betweenswitches

is

encouraged.

Note: UsingnativeLinkAggregationtrunkingfunctionalitybetweennonstacking

switchesratherthanmultiple,independent,singlecableconnectionsishighly

encouraged.

JumboFramesenabledonswitchesandNICs

EnableJumboFramesoneachswitchthathandlesiSCSItraffic.Ifyourserveris

usingasoftwareiSCSIinitiatorandNICcombination,youmustalsoenable Jumbo

FramesontheNICsthathandleiSCSItraffictoobtainanyperformancebenefit

andensureconsistentbehavior.

VLANs ConfigureswitchestouseVLANsinordertoseparateiSCSISANtrafficfromothernetworktraffic.

SwitchedGigabitEthernetnetwork

Connectarraysandhoststoaswitchednetworkandensurethatallnetwork

connectionsbetweenhostsandarraysareGigabitEthernet.Anarraycanoperate

at10and100Mbps,butperformancewillbesignificantlydegraded.

AccesstothegroupIPaddress

Inamultisubnetgroup,eachconfigurednetworkinterfaceshouldhaveaccessto

thesubnetonwhichthegroupIPaddressresides.

MultiplenetworkConnections

Connectmultiplenetworkinterfacesonanarray(todifferentswitches,if

possible).You

can

configure

the

interfaces

(assign

an

IP

address

and

subnet

mask)

afteraddingthearraytothegroup.

UnicastStormControl DisabledunicaststormcontrolononeachswitchthathandlesiSCSItraffic.Table2: NetworkRecommendations


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4 GeneralInfrastructureConfigurationDellrecommendsthatallEqualLogicSANsolutionsbeconfiguredforfullredundancy. Thefollowingtableidentifiesall

opportunitiesforredundancy:

Component RedundantConfigurationHosts TwoormorenetworkinterfaceportsattachedtotheSAN. Each

portshouldbeconnectedtoadifferentswitchwithintheSAN.

MPIOsoftwaresolutionenabledforredundancy

SANSwitches Twoormoreswitchesconfiguredforinterswitchcommunicationswithstandardportsforuplinkorstackedusingproprietarystacking

technology.

EqualLogicArray Eacharrayshouldhaveatleastoneportfromeachcontrollerconnectedtoeachswitch.

Table3: RedundancyDefinitions

Basedonthesedefinitions,thefollowingsectionswillfurtherdefinetheconnectionrecommendationsfortheprimary

componentconnectionswithintheSANinfrastructure. WhilefullredundancyinallSANcomponentsisrecommended,

nonredundantconnectionsareprovidedforthosesituationswherefullredundancyisnotviable.

4.1 ArraytoSwitchInfrastructure4.1.1 SingleSwitch/SingleArrayControllerSinglecontrollerarrayscanconnecttooneormoreswitcheswithintheSANinfrastructure. Forthesinglearray

controller/singleswitchsolution,one,twoormorearraycontrollerportsshouldbeconnectedtotheswitchas

illustratedinFigure1. Theseconnectionsmustnotbeaggregatedinanyway.

Note:Thisconfigurationdoesnotprovideafullyredundantstorageinfrastructurefromhosttoarray. Additional

componentsarerequiredforfullredundancy.

EqualLogic

StackableSwitch0CM0

Figure1: SingleControllerArraytoSingleSwitchConfiguration

4.1.2 SingleSwitch/DualArrayController


FordualcontrollerarraysconnectingtoasingleEthernetswitch,one,twoormoreportsfromcontrollerCM0shouldbe

connectedtotheswitch. Inaddition,atleastoneportfromarraycontrollerCM1shouldalsobeconnectedtothe

switch. AllthreeportsfromCM1canbeconnectedtotheswitchtoensurethatthereisnoperformancedecreaseif


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thereisafailureinCM0. Thiswillprovidearedundantpathtothearrayshouldanarraycontrollerfailasshownin

Figure2.



EqualLogic

StackableSwitch0

CM1

CM0

Figure2: DualControllerArraytoSingleSwitchConfiguration

4.1.3 DualSwitch/SingleArrayControllerSinglecontrollerarrayscanbeconnectedtoredundantswitchesasshowninFigure3. Ensurethatatleastoneport

fromCM0isconnectedtothesecondswitch. Thetwoswitchesmustbeconnectedtogetherviastackingconnectionsor

uplinkingportsthatareaggregatedtogethertoprovideequivalentbandwidthbasedontheactiveCM0portsconnected

totheSAN.



Stacking

Connection

EqualLogic

StackableSwitch1

StackableSwitch0CM0

Figure3: DualSwitchArraytoSingleControllerConfiguration

4.1.4 DualSwitch/DualArrayControllerDualcontrollerarraysshouldbeconfiguredsuchthattwoportsonController0attachtooneswitchandthethirdport

connectstoasecondswitch. TwoportsonController1shouldconnecttothesecondswitchandthethirdportshould

connecttothefirstswitch. ThecompletediagraminFigure4illustratesthisconnectionrequirement.



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Stacking

Connection

EqualLogic

StackableSwitch1

StackableSwitch0

CM1

CM0

Figure4: DualControllerArray/DualSwitchConfiguration

NOTE: ItishighlyrecommendedthatallcomponentsandconnectionswithinanEqualLogicSANshouldberedundantinnature.

4.2 HosttoSwitchInfrastructureHostcomputersshouldbeconfiguredwithoneormorenetworkinterfacecontrollers(NICs)dedicatedtoiSCSISAN

communicationsorwithoneormoreiSCSIhostbusadapters(HBAs). IfNICsareusedforiSCSIcommunications,a

supportedsoftware

based

iSCSI

initiator

will

be

required.

Most

modern

operating

systems

in

use

today

provide

softwareiSCSIinitiators. Ifoneisnotavailable,thenaniSCSIHBAwillberequiredtoconnectthehosttotheiSCSISAN.

NOTE: ItishighlyrecommendedthatallcomponentsandconnectionswithinanEqualLogicSANshouldberedundantinnature.

4.2.1 SingleInitiatorperServerInanonredundanthostconnectionsolution,asingleNICorHBAwillbeconnectedtooneswitchwithintheSAN

infrastructureasillustratedinFigure5.


componentsare

required

for

full

redundancy.

Server

NIC0

NIC1

Corporate

LAN

iSCSI

Switch0

Figure5: HosttoSwitchConfiguration SingleInitiator/SingleSwitch



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4.2.2 MultipleInitiatorsperHost/SingleSwitchRedundanthostsolutionswillincorporatetwoormoreNICsorHBAsconnectedtooneormoreSANswitches. Forhosts

connectingtoasingleswitchSAN,eachNICorHBAshouldbeconnectedtotheSANswitchasillustratedinFigure6.

EachNICshouldhavetheiSCSIsoftwareinitiatorenabledandhaveeithertheDellEqualLogicMPIOdriver(locatedinthe

HostIntegrationToolkitforWindows)orthenativeMPIOfunctionalityforthehostOSinstalled. HBAconnections

shouldleveragethestandardMPIOfunctionalityofthedriverprovidedbythevendortosupportfailoverand/orload

balancingfeatures.

Server NIC1

NIC0

NIC3NIC2

Corporate

LAN

MPIO

iSCSI

Switch0

Figure6: HosttoSwitchConfiguration DualInitiator/SingleSwitch



4.2.3 MultipleInitiatorsperHost/DualSwitchFor

aredundant

host

connection

to

more

than

two

switches,

two

or

more

NICs

or

HBAs

will

be

configured

such

that

one

NIC/HBAisconnectedtooneswitchwithintheSANinfrastructureandtheotherNIC/HBAisconnectedtoasecond

switchwithintheSANinfrastructureasshowinFigure7.

NOTE: SeetheSectiondiscussingswitchtoswitchconnectionselsewhereinthisdocumentfordetailsonconfiguringa

redundantSANswitchinfrastructure.


Server NIC1

NIC0

NIC3NIC2

Corporate

LAN

MPIO

iSCSI

Stacking

C

onnection

StackableSwitch1

StackableSwitch0


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Figure7:MultipleInitiatortoMultipleSwitchConfiguration

WhenmultipleNICsorHBAsareconfiguredtosupportredundanthostconnectionstotheiSCSISAN,theiSCSIinitiators

mustbeconfiguredtosupportconnectionfailover(andpotentiallyloadbalancing)usingindustrystandardMultiPath

Input/Output(MPIO)functionality. ThestepstoconfigureMPIOandthelevelofMPIOfunctionalityaredifferentfor

eachoperatingsystem,sopleaseconsultyouroperatingsystemdocumentationforfurtherinformation.

4.3 SwitchtoSwitchConnections4.3.1 StackableSwitchesStackableswitchesprovidededicated,highbandwidthportsthatconnectswitchestogetherintoeitherabus,ormore

typically,looparchitecture. Highbandwidth,interswitchconnectivityisanimportantfactorintheoverallperformance

ofanEqualLogicSANallowingtheindividualarraystocoordinateSANactivitiesandtoallowdatatobebalanced

betweenmultiplearrays.

StackableSwitch1

StackableSwitch2

StackingCable

I

O

I

O

StackingPort

StackableSwitch0IO

Figure8: Example:3SwitchStack

Ingeneral,followtheinstructionsprovidedbytheswitchvendorforimplementingamultipleswitchstack.Iftheswitch

vendorsupportsmultiplestacktopologies,implementthetopologythatprovidesthemostredundancyandprovidesthe

abilitytoexpandthestackwithoutinterruptionofSANtraffic. Figure8illustratesanexampleusingthreestackable

switches.

4.3.2 Non-StackableSwitchesNonStackingswitchesareaviablesolutiononlyforsmallEqualLogicSANsof3orfewerarrays. Nonstackingswitches

shouldbeconnectedbyusingstandardEthernetportsconfiguredintoaLinkAggregationGroup(LAG). Dependingon

thevendor,thiswilleitherbeaLACPcompliantlinkgrouporanEtherChannellinkgroup. Iftheswitchesareof

differentvendors,LACPwillbethestandardsbasedprotocoltobeused. Pleasefollowthedirectionsprovidedbythe

switchvendortoimplementtheappropriateLAGtype.


AllLAGsshouldconsistofanequivalentnumberoflinkstothetotalnumberofactiveportsonallarrayswithintheSAN.

Eacharraycanhaveupto3x1Gbpsactiveports,soLAGshouldbeconfiguredfor3x1Gbpslinksperarray. Figure9

illustratesanonstackableswitchinfrastructurewith4portsoneachswitchconfiguredintoaLAG.


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NonStackingSwitch0

NonStackingSwitch1

EthernetCableEthernetPortLACPAggregation/EtherChannel

Figure9: Example:4portAggregatedUplink

4.4 PuttingItAllTogetherBasedonthepreviousdiscussionsfocusingonthethreemaininfrastructurecomponentconnections hosts,arrays,and

switches,thefollowingsetofdiagramsillustrateasetofredundantandnonredundantSANconfigurationswithallof

the

components

combined

into

a

complete

set

of

solutions.

4.4.1 FullyRedundantSANTheonlydesignthataddressesallofthepossiblefailuremodesforaniSCSISANthatutilizesanEqualLogicarrayis

illustratedinFigure10. InthisSANdesign,eachcomponentoftheSANinfrastructurehasaredundantconnectionor

path.

NOTE:Foranyproductionenvironment,thisistheONLYconfigurationthatwillcompletelyprotectyouraccesstodata

andistheONLYconfigurationrecommendedbyDell.

Server NIC1

NIC0

NIC3NIC2

Corporate

LAN

MPIO

iSCSI

EqualLogic

CM1

CM0

Switch1

Switch0

Stack

or

Uplink

Figure10: EndtoEndRedundantSAN



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4.4.2 PartiallyRedundantSANConfigurationsThougheachoftheSANdesignsbelowwillalloweachhosttoaccessitsdatawithintheSAN,thesearenot

recommendedforproductiondeployment,andshouldnotbeinterpretedasarecommendation,astheydonotprovide

afullyredundantSANsolution.

4.4.2.1 SingleArrayControllersConfigurations

Figure11: SingleController/SingleSwitch/SingleNIC

Figure12: SingleController/SingleSwitch/DualNIC

Server

NIC0

NIC1

Corporate

LAN

iSCSI

EqualLogicSwitch0 C

M0

Server NIC1

NIC0

NIC3NIC2

Corporate

LAN

MPIO

iSCSI

EqualLogicCM0

Switch0



15/37

Figure13:SingleController/DualSwitch/DualNIC

Server NIC1

NIC0

NIC3NIC2

Corporate

LAN

MPIO

iSCSI

EqualLogic

Switch1

Switch0 CM0

Stack

or

Uplink

4.4.2.2 DualArrayControllersConfigurations

Figure14:DualController/SingleSwitch/SingleNIC

Figure15: DualController/DualSwitch/SingleNIC

Server

NIC0

NIC1

Corporate

LAN

iSCSI

EqualLogicSwitch0

CM1

CM0

Server

NIC0

NIC1

Corporate

LAN

MPIO

iSCSI

EqualLogic

CM1

CM0

Switch1

Switch0

Stack

or

Uplink



16/37

Figure16: DualController/SingleSwitch/DualNIC

Server NIC1

NIC0

NIC3NIC2

Corporate

LAN

MPIO

iSCSI

EqualLogic

CM1

CM0

Switch0



17/37


5 M1000eBladeChassisIntegrationM1000eandbladechassisingeneralpresentsomechallengeswithintegrationduetothelimitedoptionsforI/O

connectivityoutsideofthebladechassis. Formoreinformationpertainingtointegratingbladesolutionsintothe

EqualLogicSANinfrastructure,pleasedownloadtheIntegratingBladeSolutionswiththeDellEqualLogicPSSerieswhitepaperfromequallogic.com. Ingeneral,mostbladeintegrationsolutionswillrequireanexternalsetofswitches

thatwillhostthePSSeriesarraysthatarethenuplinkedtotheM1000ebladeenclosureI/Omodules. Itis

recommendedthatstackablebladeI/Omodulesandexternalswitchesbeutilizedforallbladesolutionswhenpossible.

5.1 GeneralGuidelinesforStackableSwitchesUsethefollowingguidelinesforbladeintegrationwithEqualLogicSANs:

BladeI/Omodulesandexternalswitchesshouldpreferablybefromthesamevendorifpossible.

StackbladeI/OmodulesintooneoftwostackingarchitecturesasdescribedinSection5.2

StackanyexternalswitchesintoasinglestackasdescribedinSection4.3.1

InterconnectbladeI/Ostack(s)withexternalswitchstackviaaggregatedlinks

Use10GbEportoptionswhereavailable(SeeFigure20)

o Aggregateatleasttwo10GbEportsfromeachbladeI/Omodulestackforredundancy

o Distribute10GbElinksamongstmultipleswitcheswithineachI/Omodulestack

o Distribute10GbElinksevenlybetweenallswitcheswithintheexternalswitchstack

o UseSwitchvendorpreferredmethodforlinkaggregation(ifallswitchesfromsamevendor)

o UseLACPasmethodforlinkaggregationwhenI/Omodulesandexternalswitchesarefromdifferent

vendors

Use1GbEportoptionsonlyif10GbEisnotavailableforuplinking

o Aggregateatleasttwo1GbEportseachbladeI/Omodulestackforredundancy

o Aggregateatleastone1GbEportfromeachI/Omoduleforeverytwobladesinchassis

o DistributelinksamongstmultipleswitcheswithineachI/Omodulestack

o Distributelinksevenlybetweenallswitcheswithintheexternalswitchstack

o Use

Switch

vendor

preferred

method

for

link

aggregation

(if

all

switches

from

same

vendor)

o UseLACPasmethodforlinkaggregationwhenI/Omodulesandexternalswitchesarefromdifferent

vendors

AllconfigurationsdocumentedhereassumethatFabricAisdedicatedtoclientLANtrafficandFabricBorCwillbeused

forSANinfrastructureconnectivity

5.2 M1000eSwitchI/OModuleConfiguration5.2.1 SingleM1000eEnclosureIntegrationForsingleM1000eenclosure,thetworedundantswitchesinthefabricslots(B1&B2orC1&C2)shouldbestacked

together

as

shown

in

Figure

17

below.
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Figure17: SingleEnclosureSwitchStacking5.2.2 MultipleM1000eEnclosureSolutionsTwooptionsareavailablewhenconfiguringthebladeI/Omodulesintostacks:

5.2.2.1 DualI/OModuleStacksTheI/Omodulesinonehalfoftheredundantfabric(B1orC1)ofeachM1000eenclosureshouldbestacked

togetherandtheI/Omodulesintheotherhalfoftheredundantfabric(B2orC2)shouldbestackedtogetheras

showninFigure18below. ThisconfigurationscalesthenumberofM1000ebladeenclosuresinparallelwiththe

maximumstacking

count

for

each

I/O

module

vendor.

In

the

case

of

the

M1000e,

the

maximum

number

of

I/O

modulesperstackis9modulesforCiscoCatalyst3130familyofswitchesand10modulesforthe

PowerConnectM6220.

Figure18:Dual I/OModuleStacks(FabricBshown)5.2.2.2 SingleI/OModuleStack

AlloftheI/OmodulesineachoftheenclosurescanbestackedtogetherasshowninFigure19. Thisprovidesa

singlemanagementstructureforthebladeI/Omodules. ThisconfigurationscalesthenumberofM1000eblade

enclosurestoofthenumberallowedintheDualStackconfiguration. ForCiscoCatalyst3130familyofI/O

modules,the

enclosure

limit

would

be

4M1000es,

and

for

the

PowerConnect

M6220

I/O

modules,

the

enclosurelimitwouldbe5M1000es



19/37

Figure19:SingleI/OModuleStack(FabricBshown)5.3 M1000eEthernetPass-ThroughI/OModule

PassThroughmodulesaresupportedforusewithEqualLogicSANsolutions. ThePassThroughmoduleprovidesa

simple,directpathfromeachbladeserversoptionalEthernetmezzaninecardtoanexternallyaccessibleport.

TheseportscanthenbeconnectedtooneormoreexternalswitchesthatareconfiguredforEqualLogicSAN

supportasdescribedinSection4.3.

5.4 ExternalTierStackingThesecondtierfortheSANinfrastructureshouldconsistoftwoormorestackableswitchespreferablyfromthesame

vendorastheM1000eswitches(Ciscointhiscase). TheseswitchesshouldbeconfiguredasdescribedforanonBlade

solutiondescribedinSections4.1and4.3ofthisdocument. Thenumberofexternalswitchesrequiredwilldependon

thenumberofarraysbeingdeployedaswellasthetypeofuplinktechnologybeingusedtoconnecttheM1000eI/O

stackstotheexternaltierstack.

5.5 StacktoStackInterconnectConnectingeachbladeenclosureI/Omodulestacktotheexternalstoragetierstackusingeitherthe1Gb/sexternal

Ethernetportsorbyusingoptional10Gb/sexternaluplinkmodules.

5.5.1 10GbEUplinksRecommendationsThefollowingrecommendationsshouldbeusedwhenconnecting Aggregateatleasttwo10GbEportsfromeachbladeI/Omodulestackforredundancy.

Ifpossible,anyLinkAggregationGroupusedforconnectingtheI/Omodulestotheexternalswitchstackshould

containatleast2linksforredundancy.Theactualnumberwilldependonboththenumberof10GbEports

availableoneachstack(spreadacrossmultiplemoduleswithinthestack)andthenumberof10GbEports

availableontheexternalswitchstack.

Forexample,eachCisco3130XbladeI/Omodulecanhaveuptotwo10GbEX2portsandtheCisco3750Ecan

haveat

most

two

10GbE

X2

ports.

In

most

configurations,

your

external

stack

will

be

comprised

of

two

switches

andamaximumoffour10GbEports. RegardlessofthenumberofM1000eenclosures,thereareonlyfour

availableportstouseforuplinking;therefore,onlyfour10GbEportstotalcanbeusedforuplinkingtwoports

perredundantstackinthedualstackbladeconfigurationorfourportsforthesinglestackbladeconfiguration.

ThisisillustratedinFigure20.

Distribute10GbElinksamongstmultipleswitcheswithineachI/Omodulestackifsupported



20/37

WhenthebladesolutionconsistsofmorethanoneM1000eenclosure,the10GbEportsusedforuplinking

shouldbedistributedbetweenmultipleenclosurestoprotectagainstacompleteenclosurefailure.

Distribute10GbElinksevenlybetweenallswitcheswithintheexternalswitchstackifsupportedWhentheexternalswitchstackconsistsofmorethanoneswitch,the10GbEportsusedforuplinkingshouldbe

distributedbetweenallswitchesinthestacktoprotectagainstaswitchfailure.

UseSwitchvendorpreferredmethodforlinkaggregation(ifallswitchesfromsamevendor)Someswitchvendorshaveproprietaryorenhancedlinkaggregationprotocols. Forexample,CiscosupportsPor

AggregationProtocol(PAgP)thatcontainsadvancedmanagementfeatures.

UseLACPasmethodforlinkaggregationwhenI/OmodulesandexternalswitchesarefromdifferentvendorsTheindustrystandardlinkaggregationprotocolisIEEE802.3ad,alsoknownastheLinkAggregationControl

Protocol(LACP). LACPistypicallythe onlymethodforcreatinglinkaggregationgroupsthatcanlinkswitches

frommultiplevendors.

Figure20illustratesanexampleofhowtolinktheM1000eenclosuresusingCiscoBladeSwitch3130XI/Omoduleswith

anexternalswitchstackconsistingofCisco3750Eswitchesusing10GbElinks.


Figure20: StacktoStackUplinksUsing10GbELinks5.5.2 1GbEUplinksRecommendationsIf10GbElinksarenotavailable,1GbElinkscanbeusedtolinkthebladeenclosureI/Omodulestotheexternalswitch

stack.Configurationsusing1GbEuplinksshouldbelimitedtosmallerinstallationslimitedtooneortwoM1000eblade

enclosuresduetoincreasedcablingcomplexity.

Thefollowingrecommendationsshouldbeusedwhenconnecting

Aggregateatleasttwo1GbEportsfromeachbladeI/Omodulestackforredundancy


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o ConfigurationswillbelimitedtooneactivelinkaggregationgroupperI/Omodulestackduetorapidspanningtreeprotocolrestrictions.

o Linkaggregationgroupswilltypicallycontainamaximumsizepermittedbyswitchand/orI/Omodulevendor(typicallyeight1GbElinks).

DistributelinksamongstmultipleswitcheswithineachI/OmodulestackifsupportedWhenthebladesolutionconsistsofmorethanoneM1000eenclosure,the1GbEportsusedforuplinking

shouldbedistributedbetweenmultipleenclosurestoprotectagainstacompleteenclosurefailure.

DistributelinksevenlybetweenallswitcheswithintheexternalswitchstackifsupportedWhentheexternalswitchstackconsistsofmorethanoneswitch,the1GbEportsusedforuplinkingshouldbe

distributedbetweenallswitchesintheexternalswitchstacktoprotectagainstaswitchfailure.

UseSwitchvendorpreferredmethodforlinkaggregation(ifallswitchesfromsamevendor)Someswitchvendorshaveproprietaryorenhancedlinkaggregationprotocols. Forexample,CiscosupportsPor

AggregationProtocol(PAgP)thatcontainsadvancedmanagementfeatures.

UseLACPasmethodforlinkaggregationwhenI/OmodulesandexternalswitchesarefromdifferentvendorsTheindustrystandardlinkaggregationprotocolisIEEE802.3ad,alsoknownastheLinkAggregationControl

Protocol(LACP). LACPistypicallythe onlymethodforcreatinglinkaggregationgroupsthatcanlinkswitches

frommultiplevendors.

illustratesanexampleofhowtolinktheM1000eenclosuresusingCiscoBladeSwitch3130XI/Omoduleswithan

externalswitchstackconsistingofCisco3750Eswitchesusing10GbElinks.


Figure21: StacktoStackUplinksUsing1GbELinksCisco3750-E Cisco3750-E

Stacking

Link AggregationGroup 1

Link AggregationGroup 2


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5.6 AdditionalResources CiscoStackManagementGuidelines: http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/s

oftware/release/12.2_35_se2/configuration/guide/swstack.html

IntegratingBladeSolutionswiththeDell

EqualLogicPSSeries

http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.equallogic.com/resourcecenter/assetview.aspx?id=7173http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.htmlhttp://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_35_se2/configuration/guide/swstack.html


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AppendixA: GeneralRequirementsforSwitchesWhenUsedwith

EqualLogicPSSeriesArrays

ForaswitchtoprovidereliableoperationwithinaDellEqualLogicSANinfrastructure,thefollowing

featuresmustbeavailable:

NonBlockingbackplanedesign

Aswitchshouldbeabletoprovidethesameamountofbackplanebandwidthtosupportfull

duplexcommunicationonALLportssimultaneously.

SupportforInterSwitchLinking(ISL)orDedicatedStackingArchitecture

ISLsupportisrequiredtolinkallswitchesinSANinfrastructuretogether. Fornonstacking

switches,theswitchshouldsupportdesignatingoneormore(throughLinkAggregationGroups)

portsforinterswitchlinks.

Forstackingswitches,theuseofstackingportsforISLisassumed. Switchshouldprovideat

least20Gbpsfullduplexbandwidth.

SupportforcreatingLinkAggregationGroups(LAG)

Fornonstackingswitches,theabilitytobindmultiplephysicalportsintoasinglelogicallinkfor

useasanISLisrequired.SwitchshouldsupportcreatingLAGsofatleast8x1Gbpsportsorat

least1x10Gbpsport.

Note:NonstackingswitcheswithmorethanthreeEqualLogicArrayscouldexhibitsome

performancereduction.

SupportforactiveorpassiveFlowControl(802.3x)onALLports.

Switchesmustbeabletoactivelymanagepauseframesreceivedfromhosts,ortheymust

passivelypassallpauseframesthroughtothetargetarrays.

SupportforRapidSpanningTreeProtocol(RSTP)

ForSAN

infrastructures

consisting

of

more

than

2non

stacking

switches,

R

STP

must

be

enabled

onallportsusedforISLs. AllnonISLportsshouldbemarkedasedgeportsorsetto

portfast.

SupportforJumboFrames


24/37


Notarequirement,butdesirable. ManystorageimplementationscantakeadvantageofJumbo

Frames. Jumboframesmaynotprovideanyperformanceincreasesdependingonthe

applicationanddatacharacteristics.

AbilitytodisableUnicastStormControl

iSCSIingeneral,andDellEqualLogicSANsinparticularcansendpacketsinaverybursty

profilethatmanyswitchesmisdiagnoseasaviralinducedpacketstorm. SincetheSANshould

beisolatedfromgeneralEthernettraffic,theviralpossibilitiesarenonexistent. Switchesneed

toalwayspassEthernetpacketsregardlessofbandwidthutilization.

AdequateBufferSpaceperswitchport

TheDellEqualLogicSANsolutionmakesuseoftheSANinfrastructuretosupportinterarray

communicationanddataloadbalancingontopofsupportingdatatransfersbetweenthehosts

andtheSAN. Forthisreason,themorebufferspaceperportthataswitchcanprovidethe

better.

Duetothemultitudeofbufferimplementationsusedbyswitchvendors,Dellcannotprovide

definitiveguidelinesastohowmuchisenough,butshouldbeenoughsuchthatdataisnotlost

duringwhentrafficreachesextremelevels.


25/37


AppendixB: PowerConnect54xxConfigurationThePowerConnect54xxFamilyofswitchesmustbeplacedinprivilegedmodetoperform

configurationstepsinthisAppendix. Usethefollowingcommandtoenterprivilegedmode:

console> enable

console#

Note: Youmaybepromptedforapasswordaftersubmittingtheenablecommand

ThePowerConnect54xxFamilyofswitchesmustbeplaceintoconfigurationmodebeforeany

configurationstepscanbeperformed. Toenterconfigurationmode,thefollowingcommandmustbe

entered:

console# configure

console(config)#

PowerConnect54xxFamilyofswitchesarenonstackingswitchesandmustbeconfiguredindependently

usingeitherthewebbasedSwitchmanagerortheCommandLineInterface(CLI). Theinstructionsin

thisAppendixprovideCLIcommandsforconfiguration. PleasegotoDellssupportwebsiteforthelatest

documentationifthewebinterfaceispreferred.

PortreferencesforthePowerConnect54xxswitchmustusetheinterfacecommandandtheport

referencesareintheformofg+.

Forexample,Port10onthePowerconnect5424wouldbereferencedas

console(config)# interface ethernet g10

Toreferencearangeofports,theinterface rangecommandmustbeusedwiththeport

referenceintheformofg(++-++).

Forexample,toreferenceallportsbetweenportg1andportg15wouldbereferencedas

console(config)# interface range ethernet g(1-15)

DisablingiSCSIOptimizationSetting

ThePowerConnect54xxfamilyofswitcheshasaglobalfeaturecallediSCSIOptimizationthatis

designedtoconfiguretheQualityofServicesettingstoallowiSCSIframestohavepriorityoverother

frametypeswithintheswitch. Thesettingsusedwhenthiscommandisenabledaredesignedto

optimizeaniSCSIstoragesolutionconsistingofasingleiSCSIstoragedeviceandisnotoptimalforaSAN

consistingofmultipleEqualLogicPSSeriesarraysinapeerstorageconfigurationandmustbedisabled

forswitchesusedwithinaPSSeriesSAN.


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TodisabletheiSCSIOptimizationsettingsforthePowerConnect54xxfamilyofswitches,performthe

followingsteps:

console# configure

console(config)# no iscsi enable

console(config)# exit

console# copy running-config startup-config

console# exit

EnablingthePortFastOptiontoConfigureSTPEdgePorts

ToenablePortFastonasingleport,thespanningtreeportfastcommandmustbeused. PortFastshould

beenabledonlyonthoseportsbeingusedtoforinterswitchconnections.

Thefollowingstepsareanexampleofusingthiscommandtoenableportfastonport10ofthe

PowerConnect5448

console# configure

console(config)# spanning-tree mode rstp

console(config)# interface ethernet g10

console(config-if)# spanning-tree portfast

console(config-if)# exit



console# exit

ConfiguringFlowControl

FlowcontrolonthePowerConnect54xxFamilyofswitchesisoffbydefault. Toenableflowcontrolon

allportsintheswitch,usethesystem flowcontrolcommand. Flowcontrolonlyworkswhen

theportisinfullduplexmode,sobesuretoenablefullduplexontheportbeforeenablingflowcontrol

ToenableflowcontrolonallportsofaPowerConnect5448,enterthefollowingcommands:

console# configure


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console(config)# interface range ethernet g(1-48)

console(config-if)# speed 1000

console(config-if)# duplex full

console(config-if)# flowcontrol on




console# exit

ConfiguringStormControl

TodisableportstormcontrolonthePowerConnect54xxswitch,usetheno port storm-

control broadcast enablecommand. Thefollowingstepsareanexampleofusingthis

commandtodisablestormcontrolonasingleportofaPowerConnect5448switch:

console# configure

console(config)# interface Ethernet g1

console(config-if)# no port storm-control broadcast enable




console# exit

ThefollowingstepsareanexampleofhowtodisablestormcontrolonallportsofaPowerConnect5448

switch:

console# configure

console(config)# interface range ethernet all

console(config-if)# no port storm-control broadcast enable



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console# exit

ConfiguringJumbo

Frames

Jumboframesarenotenabledbydefault. ToenablejumboframesonthePowerConnect54xxswitch,

usetheport jumbo-frameglobalconfigurationcommand. Jumboframesareenabledonallports

onaswitchwhenenabled.

console# configure

console(config)# port jumbo-frame



console# exit


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AppendixC: PowerConnecct62xxConfiguration

ThePowerConnect62xxFamilyofswitchesmustbeplacedinprivilegedmodetoperform

configurationstepsinthisAppendix. Usethefollowingcommandtoenterprivilegedmode:

console> enable

console#

Note: Youmaybepromptedforapasswordaftersubmittingtheenablecommand

ThePowerConnect62xxFamilyofswitchesmustbeplaceintoconfigurationmodebeforeany

configurationstepscanbeperformed. Toenterconfigurationmode,thefollowingcommandmustbe

entered:

console# configure

console(config)#

PowerConnect62xxFamilyofswitchesarestackingswitchesandmustbeconfiguredasastackusing

eitherthewebbasedSwitchmanagerortheCommandLineInterface(CLI). Theinstructionsinthis

AppendixprovideCLIcommandsforconfiguration. PleasegotoDellssupportwebsiteforthelatest

documentationifthewebinterfaceispreferred.

InterfaceNamingConvention

TheconventionsfornaminginterfacesonDellPowerConnect62xxfamilyofswitchesareasfollows:

Unit#/InterfaceID

each

interface

is

identified

by

the

Unit#

followed

by

a/symbol

and

then

theInterfaceID(seebelow).Forexample,2/g10identifiesgigabitport10withinthesecondunit

ofastack.

Unit#theunitnumberisusedonlyinastackingsolutionwhereanumberofswitchesare

stackedtoformavirtualdevice.Inthiscase,theunitnumberidentifiesthephysicaldevice

identifierwithinthestack.

InterfaceIDisformedbytheinterfacetypefollowedbytheinterfacenumber.Thereis

currentlyapredefinedlistofinterfacetypes(seebelow).Ifadditionalinterfacetypesaretobe

defined,theymustberegisteredwithDell.Forexample,2/g10identifiesthegigabitport10on

thesecondunit.

InterfaceTypes

the

following

interface

types

are

defined

in

the

6200

series

switches:

ggigabitEthernetport(forexample,1/g2isthegigabitEthernetport2).

xg10GigabitEthernetport(forexample,1/xg2isthe10gigabitEthernetport2).



30/37


ToenablePortFastonasingleport,thespanningtreeportfastcommandmustbeused. Thefollowing

stepsareanexampleofusingthiscommandtoenableportfastonport10ofthefirstPowerConnect

6248inastack

console# configure

console(config)# spanning-tree mode rstp

console(config)# interface ethernet 1/g10

console(config-if)# spanning-tree portfast




console# exit


FlowcontrolonthePowerConnect62xxFamilyofswitchesisoffbydefault. Toenableflowcontrolon

allportsintheswitch,usetheflowcontrolcommand.

ToenableflowcontrolonallportsofaPowerConnect6248,enterthefollowingcommands:

console# configure

console(config)# flowcontrol



console# exit

ConfiguringStormControl

Todisable

port

storm

control

on

the

PowerConnect

62xx

switch,

use

the

no storm-control

unicast command. Thefollowingstepsareanexampleofusingthiscommandtodisablethe

unicaststormcontrolonasingleportPort10ofSwitch3inastack:

console# configure

console(config)# interface ethernet 3/g10


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console(config-if)# no storm-control unicast




console# exit

Thefollowingstepsareanexampleofhowtodisableunicaststormcontrolonallportsina

PowerConnect62xxswitchstack:

console# configure


console(config-if)# no storm-control unicast




console# exit

ConfiguringJumbo

Frames

Jumboframesarenotenabledbydefault. ToenablejumboframesonthePowerconnect62xxswitch,

usethemtuinterfaceconfigurationcommandwithaparameterof9216. Becausethemtucommand

isaninterfaceconfigurationcommand,eachportmustbeindividuallyconfiguredwiththemtu

command. Allportsonaswitchcanbeconfiguredusingtheport rangecommand.

console# configure


console(config-if)# mtu 9216





32/37


console# exit


33/37


AppendixD: CiscoIOSBasedSwitchConfigurationCiscoIOSbasedswitchesmustbeplacedinprivilegedmodetoperformconfigurationstepsinthis

Appendix. Usethefollowingcommandtoenterprivilegedmode:

Switch> enable

Switch#

CiscoIOSbasedswitchesmustbeplaceintoconfigurationmodebeforeanyconfigurationstepscanbe

performed. Toenterconfigurationmode,thefollowingcommandmustbeentered:

Switch# configure terminal

ToconfigureaportonnonchassisbasedCiscoIOSswitch,theinterfacetype,stackmembernumber,

modulenumber,andswitchportnumbermustbeprovided,andenterinterfaceconfigurationmode.

InterfaceTypeGigabitEthernetandsmallformfactorpluggable(SFP)modules(gigabitethernetorgi),10GigabitEthernet(tengigabitethernetor

te).

StackmembernumberIdentifiestheswitchwithinthestack.Theswitchnumberrangeis1to9andisassignedthefirsttimetheswitchinitializes.Allstandaloneswitcheshavestackmember

numberequalto1.Whenaswitchisaddedtoanexistingstackitwillreceiveanewstackmember

numberanditkeepsthatnumberuntilanotherisassignedtoit.NonStackableswitcheshaveastackmembernumberof1.

TheswitchportLEDscanbeconfiguredinStackmodetoidentifythestackmembernumberofa

switch.

ModulenumberThemoduleorslotnumberontheswitchisalways0. PortnumberReflectstheactualportnumberontheswitch.Portnumbersalwaysbeginat1,

startingwiththefarleftportwhenfacingthefrontoftheswitch.

ForswitchesthathaveCiscoTwinGigConverterModulesin10GigabitEthernetmoduleslots,the

interfacetypeistengigabitethernet,andtheportnumbersrestartat1. Forexample,the

firstportonthefirstTwinGigConverterModuleisreferencedas

tengigabitethernet1/0/1andthefirstportonthesecondTwinGigConverterModule

wouldbe

referenced

as

tengigabitethernet1/0/3.

ForswitchesthatareusingCiscodualSFPX2convertermodulesinthe10GigabitEthernetmodule

slots,theSFPmoduleportsarenumberedconsecutivelyfollowingthefixedportinterfaces.For

example,iftheswitchhas24fixedports,theSFPmoduleportsare

gigabitethernet1/0/25throughgigabitethernet1/0/28.

ACatalsyt3750Eexample:


34/37


Port4isidenetifiedbyenteringthefollowingcommand:

Switch(config)# interface gigabitethernet1/0/4


ToconfigureSTPedgeportsonCiscoIOSbasedswitches,thePortfastoptionmustbesetonthedesired

port(s).

ThefollowingexampleshowshowtoenablePortFastonGigabitEthernetinterface0/1onswitch1:

Switch> enable

Switch# configigure terminal

Switch(config)# interface gi1/0/1

Switch(config-if)# spanning-tree portfast

Switch(config-if)# exit

Switch(config)# exit

Switch# copy running-config startup-config

TovieworconfirmPortFaststatusonaport,usethefollowingcommand.

Switch# show spanning-tree interface gigabitethernet0/1

Note:Use

the

spanning

tree

portfast

default

global

configuration

command

to

globally

enable

the

PortFastfeatureonallnontrunkingports.

ThisexampleshowshowtogloballyenablePortFastbydefaultonallaccessports:

Switch# config terminal

Switch(config)# spanning-tree portfast default

Switch(config)# end


ForadditionalinformationonunderstandingandconfiguringSpanningTreeProtocolonCatalyst

switches,see:

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a00

8009467c.shtml

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a008009467c.shtmlhttp://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a008009467c.shtmlhttp://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a008009467c.shtmlhttp://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a008009467c.shtmlhttp://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a008009467c.shtml


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ThissectiondescribeshowtoconfigureFlowControlonCiscoCatalyst3750and2970switches. You

mustenableFlowControloneachswitchportthathandlesiSCSItraffic.

Note:CiscoCatalystswitchportsarecapableofreceiving,butnotsending,pauseframes.

ThefollowingcommandsshowshowtoconfigureGigabitEthernetinterface0/1onswitch1toauto

negotiatethecorrectFlowControlsettingwiththedevicetowhichitisconnected:

Switch> enable



Switch(config-if)# flowcontrol receive desired




TovieworconfirmFlowControlstatusonaport,usethefollowingcommand:

Switch# show flowcontrol interface gigabitethernet1/0/1

DisablingUnicastStormControl

ThissectiondescribeshowtodisableunicaststormcontrolonCiscoCatalyst3750and2970switches.

ThefollowingexampleshowshowtodisableunicaststormcontrolonGigabitEthernetinterface0/15on

switch1andverifytheconfiguration:

Switch> enable



Switch(config-if)# no storm-control unicast level




Tovieworconfirmstormcontrolstatusonaport,usethefollowingcommand.


36/37


Switch# show storm-control gigabitethernet1/0/15 unicast

Interface

---------

Filter state

------------

Level

-----

Current

-------

Gi2/0/15 Inactive 100.00% N/A

FormoreinformationonconfiguringportbasedtrafficcontrolonCatalystswitches,see:

http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09

186a008021272b.html

ConfiguringJumboFrames

OnCiscoCatalystswitches,MTUsizecannotbesetforanindividualinterface.Instead,itmustbe

configuredforallGigabitEthernetportsontheswitch,orforallportsinaVLAN.WhentheMTUsizeis

changed,theswitchmustresetbeforethenewconfigurationtakeseffect.Ifavalueisenteredthatis

outsidethe

allowed

range

for

the

specific

type

of

interface,

the

value

is

not

accepted.

UsethefollowingcommandstoconfigureJumboFrames,whichsetsthemaximumpacketsizeto9000

bytes:

Switch> enable

Switch# config terminal

Switch(config)# system mtu jumbo 9000



Switch# reload

ThefollowingexampleshowstheoutputwhenyoutrytosetGigabitEthernetinterfacestoanoutof

rangenumber:

Switch(config)# system mtu jumbo 25000

^

% Invalid input detected at '^' marker.

Oncetheswitchreloads,theconfigurationcanbeverifiedbyenteringthefollowingcommands:

Switch> enable

Switch# configure t
http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a008021272b.htmlhttp://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a008021272b.htmlhttp://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a008021272b.htmlhttp://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a008021272b.htmlhttp://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a008021272b.html


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Switch(config)# show system mtu


ThecommandsshownnextareusedtoenableanindividualVLANtouseJumboFrames.Notethat

VLAN1cannothaveJumboFramesenabled. VLAN2mustbeusedifJumboFramesarerequired.

Switch# vlan database

Switch(vlan)# vlan 2 mtu 9000

Switch(vlan)# exit

TovieworconfirmMTUsizeonport7oftheswitch,usethefollowingcommand.

Switch# show interface gigabitethernet1/0/7

FormoreinformationonconfiguringJumboFramesorGiantFramesonCatalystswitches,see:

http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a00

8010edab.shtml
http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtmlhttp://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtmlhttp://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtmlhttp://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtmlhttp://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010edab.shtml

equallogic_configuration_guide examples cisco dell 54xx

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