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Cisco ONS 15310-CL and Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide R8.5
78-18133-01
Chapter 6 Configuring STP and RSTP on the ML-Series Card
Verifying and Monitoring STP and RSTP Status
Note The show spanning-tree interface interface-id privileged EXEC command displays information only
if the port is in a link-up operative state. Otherwise, you can use the show running-config interface
privileged EXEC command to confirm the configuration.
Examples of the show spanning-tree privileged EXEC commands are shown here:
Example 6-1 show spanning-tree Commands
ML_Series# show spanning-tree brief
Bridge group 1 is executing the rstp compatible Spanning Tree protocol
Bridge Identifier has priority 32768, sysid 1, address 000b.fcfa.339e
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 1 last change occurred 1w1d ago
from POS0.1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 0, topology change 0, notification 0, aging 300
Port 3 (FastEthernet0) of Bridge group 1 is designated disabled
Port path cost 19, Port priority 128, Port Identifier 128.3.
Designated root has priority 32769, address 000b.fcfa.339e
Designated bridge has priority 32769, address 000b.fcfa.339e
Designated port id is 128.3, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 0
Link type is point-to-point by default
BPDU: sent 0, received 0
ML_Series# show spanning-tree interface fastethernet 0
Port 3 (FastEthernet0) of Bridge group 1 is designated disabled
Port path cost 19, Port priority 128, Port Identifier 128.3.
Designated root has priority 32769, address 000b.fcfa.339e
Designated bridge has priority 32769, address 000b.fcfa.339e
Designated port id is 128.3, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 0
Link type is point-to-point by default
BPDU: sent 0, received 0
ML_Series# show spanning-tree summary totals
Switch is in pvst mode
Root bridge for: Bridge group 1-Bridge group 8
Table 6-6 Commands for Displaying Spanning-Tree Status
Command Purpose
ML_Series# show spanning-tree
Displays detailed STP or RSTP information.
ML_Series# show spanning-tree
brief
Displays brief summary of STP or RSTP information.
ML_Series# show spanning-tree
interface
interface-id
Displays STP or RSTP information for the specified interface.
ML_Series# show spanning-tree
summary
[totals]
Displays a summary of port states or displays the total lines of
the STP or RSTP state section.