Spanning-Tree Operation 
802.1s Multiple Spanning Tree Protocol (MSTP) 
Displaying the MSTP Configuration 
Displaying the Global MSTP Configuration.  This command displays the 
switch’s basic and MST region spanning-tree configuration, including basic 
port connectivity settings. 
Syntax:  show spanning-tree config 
The upper part of this output shows the switch’s global 
spanning-tree configuration that applies to the MST region. 
The port listing shows the spanning-tree port parameter 
settings for the spanning-tree region operation (configured by 
the spanning-tree < port-list > command). For information on 
these parameters, refer to 
“Configuring Basic Port 
Connectivity Parameters” on page 6-61. 
Syntax:  show spanning-tree < port-list > config 
This command shows the same data as the above command, 
but lists the spanning-tree port parameter settings for only the 
specified port(s) and/or trunk(s). You can list data for a series 
of ports and port trunks by specifying the first and last port 
or trunk of any consecutive series of ports and trunks. For 
example, to display data for port A20-A24 and trk1, use this 
command: show spanning-tree a20-trk1 config 
Global Hello Time 
Per-Port Hello Time 
(Overrides Global Hello-
Time on individual ports.) 
Per-Port Priority 
Global Priority 
Figure 6-30.  Example of Displaying the Switch’s Global Spanning-Tree Configuration 
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