Administrator Guide

Layer 2 Switching Commands 755
Example
console#show spanning-tree summary
Spanning Tree Admin Mode.......... Enabled
Spanning Tree Version............. IEEE 802.1w
BPDU Guard Mode................... Disabled
BPDU Flood Mode................... Disabled
IndirectLink Rapid Convergence.... Disabled
DirectLink Rapid Convergence...... Disabled
BPDU Filter Mode.................. Disabled
Configuration Name................ 14-18-77-0C-9D-D8
Configuration Revision Level...... 0
Configuration Digest Key.......... 0xac36177f50283cd4b83821d8ab26de62
Configuration Format Selector..... 0
show spanning-tree vlan
Use the show spanning-tree vlan command to display spanning tree
information per VLAN and also list out the port roles and states as well as
port cost.
Syntax
show spanning-tree vlan { vlan-list | all }
• vlan-list — A list of VLANs or VLAN ranges separated by commas and
with no embedded blank spaces. VLAN ranges are of the form X-Y where X
and Y are valid VLAN identifiers and X < Y.
Configuration Name Identifier used to identify the configuration currently
being used.
Configuration Revision
Level
Identifier used to identify the configuration currently
being used.
Configuration Digest Key A generated Key used in the exchange of the BPDUs.
Configuration Format
Selector
Specifies the version of the configuration format being
used in the exchange of BPDUs. The default value is
zero.
MST Instances List of all multiple spanning tree instances configured
on the switch.