Enterasys-networks Enterasys Gold Distributed Forwarding Engine 4G428 Manuel d'utilisateur télécharger pdf (Page 32)

Link Aggregation

2-2 Network Requirements

Link Aggregation

LinkAggregationisamethodofgroupingmultiplephysicalportsonanetworkdevice

intoonelogicallinkaccordingtotheIEEE802.3ad‐2002standard.BecauseLink

Aggregationisstandardsbased,itallowsforautomaticconfigurationwithmanual

overrides(ifapplicable),andcanoperateon10Mbps,100Mbps,or1000

MbpsEthernet

fullduplexports.Thusthenetworkadministratorcancombineagroupoffive100Mbp s

portsintoalogicallink(trunk)thatfunctionsasasingle500Mbpsport.Aslongasthe

DFEmodulesagreeonwhichportsareinthetrunk,therearenoproblemswith

looping,

andtheSpanningTreecantreatthistrunkasasingleport.

Innormalusage(andtypicalimplementations)thereisnoneedtoenable/disableportsfor

LinkAggregation.Thedefaultvalueswillresultinthemaximumnumberofaggregations

possible.Iftheswitchisplacedinaconfigurationwithits

peersnotrunningtheprotocol,

noaggregationswillbeformedandtheDFEmoduleswillfunctionnormally(thatis,

SpanningTreewillblockredundantpaths).

FordetailsaboutthecommandsinvolvedwithconfiguringtheLinkAggregation

function,refertotheEnterasysMatrixDFE‐GoldSeriesConfigurationGuide.

Module Placement in a Matrix E7 Chassis

Ifyouwanttomix6x1xxx,6x2xxx,6x3xxx,and7H43xx‐xxseriesmodulesinthesame

Matrix E7chassis,itisnecessarytohaveaDFEmoduleinstalledsuchasthe4G4285‐49,

andalsofollowthemoduleplacementrulesdescribedin“DFEModulePlacementand

InstallationRules”onpage 3‐3

tosuccessfullybridgedatatraffictosomeorallmodulesin

theMatrix E7chassis.

FTM Bridge Function and Optional NEM

The4G4285‐49DFEmoduledoesnotsupportboththeFTMbridgingfunctionandan

optionalnetworkexpansionmoduleatthesametime.Withanoptionalnetwork

expansionmoduleinstalled,theFTMbridgingfunctionisdisabled.Ineitherofthese

cases,allportsofthe4G4285‐49remainactive.

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Enterasys-networks Enterasys Gold Distributed Forwarding Engine 4G428 Manuel d'utilisateur Page 32