Reference Guide

clear spanning-tree counters
Clears the counters for STP.
Syntax
clear spanning-tree counters [interface {ethernet node/slot/port[:subport] |
port—channel number}}]
Parameters
• interface — Enter the interface type:
• ethernet node/slot/port[:subport] — Deletes the spanning-tree counters from a physical
port.
• port-channel number — Deletes the spanning-tree counters for a port-channel interface (1 to 128).
Default Not congured
Command Mode EXEC
Usage Information Clear all STP counters on the device per Ethernet interface or port-channel.
Example
OS10# clear spanning-tree counters interface port-channel 10
Supported Releases 10.2.0E or later
show spanning-tree active
Displays the RSTP conguration and information for RSTP-active interfaces.
Syntax
show spanning-tree active
Parameters None
Default Not congured
Command Mode EXEC
Usage Information None
Example
OS10# show spanning-tree active
Spanning tree enabled protocol rstp with force-version rstp
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768, Address 90b1.1cf4.9b8a
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32768, Address 90b1.1cf4.9b8a
We are the root
Configured hello time 2, max age 20, forward delay 15
Interface Designated
Name PortID Prio Cost Sts Cost Bridge ID PortID
----------------------------------------------------------------------
ethernet3/1/1 244.128 128 500 BLK 0 32768 90b1.1cf4.9b8a 128.244
ethernet3/1/2 248.128 128 500 BLK 0 32768 90b1.1cf4.9b8a 128.248
ethernet3/1/3 252.128 128 500 FWD 0 32768 90b1.1cf4.9b8a 128.252
ethernet3/1/4 256.128 128 500 BLK 0 32768 90b1.1cf4.9b8a 128.256
Interface
Name Role PortID Prio Cost Sts Cost Link-type Edge
------------------------------------------------------------
ethernet3/1/1 Altr 128.244 128 500 BLK 0 AUTO No
ethernet3/1/2 Altr 128.248 128 500 BLK 0 AUTO No
ethernet3/1/3 Root 128.252 128 500 FWD 0 AUTO No
ethernet3/1/4 Altr 128.256 128 500 BLK 0 AUTO No
Layer 2 203