Specifications

show spanning-tree statistics
251
show spanning-tree statistics
Displays statistics about Spanning Tree Protocols.
Syntax
show spanning-tree statistics [ {vlan [ <VLAN ID list> ] | single | mst [ instance <MSTI
ID list> ]} [ port <Port# list> ] [channel-group-number <Channel group# list>] ]
Input mode
User mode and administrator mode
Parameters
{vlan [ <VLAN ID list> ] | single | mst [ instance <MSTI ID list> ]}
vlan
Displays PVST+ statistics.
<VLAN ID list>
Displays PVST+ Spanning Tree statistics for the VLAN IDs specified in list
format.
For details about how to specify <VLAN ID list>, see Specifiable values for
parameters.
Operation when this parameter is omitted:
Statistics for all VLANs for which PVST+ is operating are displayed.
single
Displays statistics about Single Spanning Tree.
mst
Displays statistics about Multiple Spanning Tree.
instance <MSTI ID list>
Displays statistics about the Multiple Spanning Tree for the MST instance IDs
specified in list format. Specifiable values for MST instance ID are in the range
from 0 to 4095.
If
0 is specified as the MST instance ID, CIST is subject to display.
Operation when this parameter is omitted:
All MST instances are subject to display.
port <Port# list>
Displays Spanning Tree statistics for the specified port number. For details about
how to specify <Port# list> and the specifiable range of values, see Specifiable
values for parameters.
channel-group-number <Channel group# list>
Displays Spanning Tree statistics for the channel groups specified in list format. For
details about how to specify <Channel group# list>, see Specifiable values for
parameters.
Operation when all parameters are omitted:
Displays statistics about Single Spanning Tree, PVST+, and Multiple Spanning Tree.
Example 1
Figure 17-7 Example of displaying PVST+ Spanning Tree statistics
> show spanning-tree statistics vlan 1,4094