Reference Guide

show spanning-tree summary
This command displays spanning tree settings and parameters for the switch. The following details are
displayed on execution of the command.
Format show spanning-tree summary
Mode
•
Privileged EXEC
•
User EXEC
Column Meaning
Spanning Tree Adminmode Enabled or disabled.
Spanning Tree Version Version of 802.1 currently supported (IEEE 802.1s, IEEE 802.1w, or IEEE 802.1d)
based upon the Force Protocol Version parameter.
BPDU Guard Mode Enabled or disabled.
BPDU Filter Mode Enabled or disabled.
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.
The following example shows CLI display output for the command.
(Extreme 220) (Routing) #show spanning-tree summary
Spanning Tree Adminmode........... Enabled
Spanning Tree Version............. IEEE 802.1s
BPDU Guard Mode................... Disabled
BPDU Filter Mode.................. Disabled
Configuration Name................ ****
Configuration Revision Level...... ****
Configuration Digest Key.......... ****
Configuration Format Selector..... 0
No MST instances to display.
show spanning-tree uplinkfast
This command displays spanning tree information for uplinkfast.
Format
show spanning-tree uplinkfast
Mode
•
Privileged EXEC
•
User EXEC
Column Meaning
Uplinkfast transitions (all VLANs) The number of uplinkfast transitions on all VLANs.
Proxy multicast addresses transmitted (all
VLANs)
The number of proxy multicast addresses transmitted on all
VLANs.
Switching Commands
ExtremeSwitching 200 Series: Command Reference Guide for version 01 .02.04.0007 312