Reviewing and Enabling Spanning Tree

By default, Spanning Tree is enabled globally on Extreme Networks switch devices and enabled on all ports. On all switching devices, the default Spanning Tree version is set to MSTP (802.1s) mode. Since MSTP mode is fully compatible and interoperable with legacy STP and RSTP bridges, in most networks, this default should not be changed.

Use the following commands to review, re-enable, and reset the Spanning Tree mode.

Review the current configuration on one or more SIDs, ports, or both:
show spantree stats [port port-string] [sid sid] [active]

Specifying active will display information for port(s) that have received BPDUs since boot.
If necessary, globally enable Spanning Tree:
set spantree stpmode ieee8021
Review the status of Spanning Tree on one or more ports:
show spantree portadmin [port port-string]
If necessary, re-enable Spanning Tree on one or more ports:
set spantree portadmin port-string enable

Published May 2016prev | next

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