Specifications

Configuring Spanning Tree Loop Protect Features show spantree lp
6-66 Spanning Tree Configuration
Parameters
Defaults
IfnoSIDisspecified,SID0isassumed.
Mode
Switchcommand,Read‐Write.
Usage
TheLoopProtectfeatureisdisabledbydefault.See“LoopProtect”onpage 2.formore
information.
LoopProtecttakesprecedenceoverperportSTPenable/disable (portAdmin).Normally
portAdmindisabledwouldcauseaporttogoimmediatelytoforwarding.IfLoopProtectis
enabled,thatportshouldgotolisteningandremain
there.
Example
ThisexampleshowshowtoenableLoopProtectonfe.2.3:
Matrix(rw)->set spantree lp enable fe.2.3
show spantree lp
UsethiscommandtodisplaytheLoopProtectstatusperportand/orperSID.
Syntax
show spantree lp [port port-string] [sid sid]
Parameters
Defaults
Ifnoport‐stringisspecified,statusisdisplayedforallports.
port‐string Specifiesport(s)onwhichtoenableordisabletheLoopProtectfeature.
Foradetaileddescriptionofpossibleport‐stringvalues,referto“Port
StringSyntaxUsedintheCLI”onpage 4‐2.
enable|disable Enablesor
disablesthefeatureonthespecifiedport.
sidsid (Optional)EnablesordisablesthefeatureforspecificSpanningTree(s).
Validvaluesare0‐4094.Ifnotspecified,SID0isassumed.
Note: The Loop Protect enable/disable settings for an MSTI port should match those for the CIST
port.
port‐string (Optional)Specifiesport(s)forwhichtodisplaytheLoopProtect
featurestatus.Foradetaileddescriptionofpossibleport‐stringvalues,
referto“PortStringSyntaxUsedintheCLI”onpage 4‐2.
sidsid (Optional)SpecifiesthespecificSpanningTree(s)forwhichtodisplay
theLoopProtectfeature
status.Validvaluesare0‐4094.Ifnot
specified,SID0isassumed.