Lenovo Flex System Fabric CN4093 User Manual

162 CN4093 Application Guide for N/OS 8.4
Static LAGs
WhenyoucreateandenableastaticLAG,theLAGmembers(switchports)takeon
certainsettingsnecessaryforcorrectoperationoftheaggregationfeature.
Before Configuring Static LAGs
Beforeyouconfigure yourLAG,youmustconsiderthesesettings,alongwith
specificconfigurationrules,asfollows:
 Readtheconfigurationrulesprovidedinthesection,“StaticLAGConfiguration 
Rules”onpage 162.”
 DeterminewhichswitchportsaretobecomeLAGmembers(thespecificports
makinguptheLAG).
 Ensurethatthechosenswitchportsaresettoenabled.
 EnsureallmemberportsinaLAGhavethesameVLANconfiguration.
 ConsiderhowtheexistingSpanningTreewillreacttothenewLAG
configuration.See“SpanningTreeProtocols”onpage 171forconfiguration
guidelines.
 ConsiderhowexistingVLANswillbeaffectedbytheadditionofaLAG.
Static LAG Configuration Rules
Theaggregationfeatureoperatesaccordingtospecificconfigurationrules.When
creatingLAGs,considerthefollowingrulesthatdeterminehowaLAGreactsin
anynetworktopology:
 AllLAGsmustoriginatefromonenetworkentity(asingledeviceormultiple
devicesactinginastack)andleadtoonedestinationentity.Forexample,you
cannotcombinelinksfromtwodifferentserversintooneLAG.
 AnyphysicalswitchportcanbelongtoonlyoneLAG.
 Dependingonportavailability,theswitchsupportsupto24portsineachLAG.
 Internalports(INTx)andexternalports(EXTx)cannotbecomemembersofthe
sameLAG.
 Aggregationfromthird‐partydevicesmustcomplywithCisco
®
EtherChannel
®

technology.
 AllLAGmemberportsmustbeassignedtothesameVLANconfiguration 
beforetheLAGcanbeenabled.
 IfyouchangetheVLANsettingsofanyLAGmember,youcannotapply the
changeuntilyouchangetheVLANsettingsofallLAGmembers.
 WhenanactiveportisconfiguredinaLAG,theportbecomesaLAGmember
whenyouenabletheLAG.TheSpanningTreeparametersfortheportthen
changetoreflectthenewLAGsettings.
 AllLAGmembersmustbeinthesameSpanningTreeGroup(STG)andcan
belongtoonlyoneSpanningTreeGroup(STG).Howeverifallportsaretagged,
thenallLAGportscanbelongtomultipleSTGs.

Lenovo Flex System Fabric CN4093 Specifications

General

Brand	Lenovo
Model	Flex System Fabric CN4093
Category	Switch
Language	English