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 Beforeconfiguringthestack:

 IdentifytheVLANtobeusedasthestackingVLAN.

 Savethecurrentconfigurationtoanexternaldevice.Theportnumberingwill

changeoncestackingisenabled.Usethesavedconfigurationtoreassign

ports/interfacesasperthenewportnumberingscheme.Onceastackis

configured,portnumbersaredisplayedthroughouttheBBIusingthecsnum

toidentifytheswitch,followed

bytheswitchportnumber.Forexample:

Stacking VLANs

VLAN4090isthedefault VLANreservedforinternaltrafficonstackingports.You

canchangetheVLAN,ifrequired.

Note: DonotuseVLAN4090(ortheconfiguredVLAN)foranypurposeother

thaninternalstackingtraffic.

Configuring Each Switch in a Stack

Toconfigureeachswitchforstacking,connecttotheinternalmanagementIP

interfaceforeachswitch(assignedbythemanagementsystem)andusetheISCLI

toperformthefollowingsteps.

Note: IPv6isnotsupportedinstackingmode.IPinterfacesmustuseIPv4

addressingforproperstackconfiguration.

1. Oneachswitch,enable

stacking:

2. Oneachswitch,setthestackingmembershipmode.

Bydefault,eachswitchissettoMembermode.However,oneswitchmustbesetto

Mastermode.UsethefollowingcommandononlythedesignatedMasterswitch:

Note: IfanyMemberswitchesareincorrectlysettoMastermode,usethemode



memberoptiontosetthembacktoMembermode.

3. Oneachswitch,configurethestackingVLAN(orusethedefaultsetting).

AlthoughanyVLAN(exceptVLAN1)maybedefinedforstacktraffic,itishighly

recommendedthatthedefault,VLAN 4090asshowninthefollowingexample,be 

reservedforstacking.



4. Oneachswitch,designatethestackinglinks.

CN 4093(config)# boot stack enable

CN 4093(config)# boot stack mode master

CN 4093(config)# boot stack vlan 4090

Lenovo Flex System Fabric CN4093 User Manual

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