Enterasys Networks D2G124-12P Manual

A SERVICE OF

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set spantree spanguard

D-Series CLI Reference 6-25

Defaults

None.

Mode

Switchcommand,read‐only.

Example

ThisexampleshowshowtodisplaytheSpanGuardfunctionstatus:

D2(su)->show spantree spanguard

Spanguard is disabled

set spantree spanguard

UsethiscommandtoenableordisabletheSpanningTreeSpanGu ardfunction.

Syntax

set spantree spanguard {enable | disable}

Parameters

Defaults

None.

Mode

Switchcommand,read‐write.

Usage

SpanGuardisdesignedtodisable,orlockoutan“edge”portwhenanunexpectedBPDUis

received.Theportcanbeconfiguredtobere‐enabledafterasettimeperiod,oronlyaftermanual

intervention.

Aportcanbedefinedasanedge(user)portusingthesetspantreeadminedge

command,

describedin“setspantreeadminedge”onpage 6‐37.Aportdesignatedasanedgeportis

expectedtobeconnectedtoaworkstationorotherend‐usertypeofdevice,andnottoanother

switchinthenetwork.WhenSpanguardisenabled,ifanon‐loopbackBPDUis

receivedonan

edgeport,theSpanningTreestateofthatportwillbechangedto“blocking”andwillnolonger

forwardtraffic.Theport willremaindisableduntiltheamountoftimedefinedbysetspantree

spanguardtimeout(“setspantreespanguardtimeout”onpage 6‐26)haspassedsincethelastseen



BPDU,theportismanuallyunlocked(setorclearspantreespanguardlock,“clear/setspantree

spanguardlock”onpage 6‐28),theconfigurationoftheportischangedsoitisnotlongeranedge

port,ortheSpanGuardfunctionisdisabled.

SpanGuardisenabledanddisabledonlyonaglobal

basis.Bydefault,SpanGuardisdisabledand

SpanGuardtrapsareenabled.

Example

ThisexampleshowshowtoenabletheSpanGuardfunction:

D2(rw)->set spantree spanguard enable

enable|disable EnablesordisablestheSpanGuardfunction.