Spanning-Tree Operation

802.1s Multiple Spanning Tree Protocol (MSTP)

9.To view the current pending MSTP configuration, use the show spanning- tree pending command (page page 5-80).

Displaying MSTP Statistics and Configuration

Command

Page

MSTP Statistics:

 

show spanning-tree [< port-list>]

below

show spanning-tree instance < ist 1..16 >

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MSTP Configuration

 

show spanning-tree [ port-list] config

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show spanning-tree [ port-list ] config instance < ist 1..16 >

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show spanning-tree mst-config

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show spanning-tree pending< < instance ist > mst-config >

page

 

5-80

 

 

Displaying MSTP Statistics

Displaying Switch Statistics for the Common Spanning Tree. This command displays the MSTP statistics for the connections between MST regions in a network.

Syntax: show spanning-tree

This command displays the switch’s global and regional spanning-tree status, plus the per-port spanning-tree operation at the regional level. Note that values for the following parameters appear only for ports connected to active devices: Designated Bridge, Hello Time, PtP, and Edge.

Syntax: show spanning-tree < port-list>

This command displays the spanning-tree status for the designated port(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, you would use this command: show spanning-treea20-trk1

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