User Guide
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5.6 Trunk
Trunkingisusedtoexpandbandwidth,forfailover,and/ortoincreaseerrortoler-
ancewhennetworkingmultipleswitchestogether.
Allportsthataredefinedasmembersofthetrunkgroupcanbeusedfortrunking
ONLYandcannotbeusedforotherpurposes,evenwhentheyarenotbeingused
bythetrunkgroup.
Cross-VLANtrunkgroupingisnotsupported.Allmembersofatrunkgroupmustbe
withinthesameVLAN.Otherwisethetrunkwillnotfunctionproperly.
Whenthetrunkgroupisusedforinter-switchcascading(Uplinks),besurethecas-
cadingportusedforconnectingwiththeotherswitchispartofthecorresponding
trunkgroup.Thecascadingofmultipleports(trunkmembers)mustbedonefrom
onetrunkgrouptoacorrespondingtrunkgroup.
CAUTION:
Neverconnecttwotrunkgroupsofaswitchtogetheror
cascadetwoswitchesthroughmorethanonetrunkchannel.
Suchconfigurationswillresultinanetworkloopandwill
causeabroadcaststormresultinginblockingofallnetwork
trafficontheswitches.