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Catalyst 6500 Series Switch Command Reference—Release8.1
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Chapter2 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 -93 describes the possible fields in the show spantree statistics command output.
Table2-93 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, forwa rdi ng, or b lo cki ng).
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.