Service Manual

show spanning-tree 0
Display the spanning tree group configuration and status of interfaces in the spanning tree group.
Syntax
show spanning-tree 0 [active | brief | guard | interface interface | root |
summary]
Parameters
0 Enter 0 (zero) to display information about that specific spanning tree group.
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
Version Description
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
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.
“Configured hello...” Displays the settings for hello time, max age, and forward delay.
“We are...” States whether this bridge is the root bridge for the STG.
“Current root...” Lists the bridge priority and MAC address for the root bridge.
“Topology flag...” States whether the topology flag and the detected flag were set.
“Number of...” Displays the number of topology changes, the time of the last topology change, and on
what interface the topology change occurred.
Spanning Tree Protocol (STP) 1187