Reference Guide

active (OPTIONAL) Enter the keyword active to display only active
interfaces in spanning tree group 0.
brief (OPTIONAL) Enter the keyword brief to display a synopsis of the
spanning tree group configuration information.
guard (OPTIONAL) Enter the keyword guard to display the type of guard
enabled on an STP interface and the current port state.
interface
interface
(OPTIONAL) Enter the keyword interface and the type slot/port of
the interface you want displayed. Type slot/port options are the
following:
• For a Port Channel interface, enter the keywords port-
channel then a number. The range is from 1 to 128.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword
fortyGigE then the slot/port information.
root (OPTIONAL) Enter the keyword root to display configuration
information on the spanning tree group root.
summary (OPTIONAL) Enter the keyword summary to only the number of ports
in the spanning tree group and their state.
Command Modes EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.5.1.0 Added support for 4-port 40G line cards on the E-Series ExaScale.
Version 8.4.2.1 Added support for the optional guard keyword on the C-Series, S-
Series, and E-Series TeraScale.
Version 8.3.7.0 Introduced on the S4810.
Version 7.7.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version
6.2.1.1
Introduced on the E-Series.
Usage
Information
Enable spanning tree group 0 prior to using this command.
The following describes the show spanning-tree 0 command shown in the example.
Field
Description
“Bridge Identifier...” Lists the bridge priority and the MAC address for this STP bridge.
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