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Catalyst 6500 Series Switch Command Reference—Release 8.4
OL-6244-01
Chapter 2 Catalyst 6500 Series Switch and ROM Monitor Commands
show spantree statistics
bridge forward delay 15(15) sec
topology change initiator: 1/0
last topology change occured: Fri Sep 7 2001, 09:52:22
topology change FALSE
topology change time 35
topology change detected FALSE
topology change count 3
topology change last recvd. from 00-00-00-00-00-00
Other port-specific info
dynamic max age transitions 0
port bpdu ok count 0
msg age expiry count 0
link loading 0
bpdu in processing FALSE
num of similar bpdus to process 0
received_inferior_bpdu FALSE
next state 3
src mac count: 0
total src mac count 0
curr_src_mac 00-00-00-00-00-00
next_src_mac 00-00-00-00-00-00
channel_src_mac 00-00-00-00-00-00
channel src count 0
channel ok count 0
Console>
This example shows how to display transmitted, received, processed, and dropped BPDUs and the rate
of BPDUs in seconds:
Console> show spantree statistics bpdu
Transmitted Received Processed Dropped
-------------- -------------- -------------- --------------
Total 52943073 52016589 52016422 167
Rate(/sec) 989 971 971 0
Console>
Table 2-101 describes the possible fields in the show spantree statistics command output.
Table 2-101 show spantree statistics Command Output Fields
Field Description
BPDU-related parameters
port spanning tree Status of whether Spanning Tree Protocol is enabled or disabled on the port.
state Spanning tree port state (disabled, listening, learning, forwarding, or blocking).
port_id Port identifier of the associated port.
port number Port number.
path cost Contribution of the path through this root port. This applies to the total path cost to the root for
this bridge.
message age
(port/VLAN)
Age of the received protocol information recorded for a port and the value of the Max Age
parameter (shown in parentheses) recorded by the switch.
designated_root MAC address of the designated spanning tree root bridge.
designated_cost Cost of the path to the root offered by the designated port on the LAN to which this port is
attached.