Specifications

Displaying Spanning Tree Information
13-12 Configuring and Managing Spanning Tree Protocol
Inthisexample,VLANmauvecontainsports1through3,10,15and16.Ports1and10are
forwardingtraffic.Theotherportsareblockingtraffic.
Formoreinformationaboutthefieldsintheoutput,seetheRoamAboutMobilitySystemSoftware
CommandLineInterfaceReference.
Displaying the STP Port Cost on a VLAN Basis
TodisplayabrieflistoftheSTPportcostforaportineachofitsVLANs,usethefollowing
command:
show spantree portvlancost port-list
Thiscommanddisplaysthesameinformationastheshowspantreecommand’sCostfieldina
conciseformatforallVLANs.TheshowspantreecommandlistsalltheSTPinformation
separatelyfor eachVLAN.
Example
TodisplaytheSTPportcostofport1,type thefollowingcommand:
RBT-8100# show spantree portvlancost 1
port 1 VLAN 1 have path cost 19
Displaying Blocked STP Ports
TodisplayinformationaboutportsthatareintheSTPblockingstate,usethefollowingcommand:
show spantree blockedports [vlan vlan-id]
Example
Todisplayinformat ion aboutblockedportsonaRoamAboutSwitchforthe defaultVLAN(VLAN
1),typethefollowingcommand:
RBT-8100# show spantree blockedports vlan default
Port Vlan Port-State Cost Prio Portfast
------------------------------------------------------------------------
22 190 Blocking 4 128 Disabled
Number of blocked ports (segments) in VLAN 1 : 1
Forinformationaboutthefieldsintheoutput,seetheRoamAboutMobilitySystemSoftware
CommandLineInterfaceReference.