Specifications

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4.3.4 PortTrunking
PortTrunkingconfigurationallowsyoutogroupmultipleEthernetportsinparallel
toincreaselinkbandwidth.Theaggregatedportscanbeviewedasonephysical
portsothatthebandwidthishigherthanmerelyonesingle Ethernetport.The
memberportsofthesametrunkgroupcanbalancetheloadingandbackupfor
eachother.PortTrunkingfeatureisusuallyusedwhenyouneedhigher
bandwidthforbackbonenetwork.Thisisaninexpensivewa yforyoutotransfer
moredata.
Therearesomedifferentdescriptionsfortheporttrunking.Different
manufacturersmayusedifferentdescriptionsfortheirproducts,likeLink
AggregationGroup(LAG),LinkAggregationControlProtocol,EthernetTrunk,
EtherChannel…etc.MostoftheimplementationsnowconformtoIEEEstandard,
802.3ad.
Theaggregatedportscaninterconnecttotheotherswitchwhichalsosupports
PortTrunking.WestermoSupports2typesofporttrunking.OneisStaticTrunk,
theotheris802.3ad.Whentheotherenduses802.3adLACP,youshouldassign
802.3adLACPtothetrunk.Whentheotherendusesnon‐802.3ad,youcanthen
useStaticTrunk.
Thereare2configurationpages,AggregationSettingandAggregationStatus.
AggregationSetting
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TrunkSize:Theswitchcansupportupto8
trunkgroupswith2trunkmembers.Since
thememberportsshouldusesame
speed/duplex,maxtrunkmembersfor
100Mbpswouldbe8,and2forgigabit.
GroupID:GroupIDistheIDfortheport
trunkinggroup.PortswithsamegroupID
areinthesamegroup.
Type:Staticand802.3adLACP.EachTrunk
GroupcanonlysupportStaticor802.3ad
LACP.Choosethetypeyouneedhere.
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AggregationStatus
Thispageshowsthestatusofportaggregation.Oncetheaggregationportsare
negotiatedwell,youwillseefollowingstatus.
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