HP 2910AL - Manual (Page 475)

Monitoring and Analyzing Switch Operation
Status and Counters Data
Spanning Tree Protocol (MSTP) Information
CLI Access to MSTP Data
This option lists the MSTP configuration, root data, and per-port data (cost,
priority, state, and designated bridge).
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.
Figure B-13. Output from show spanning-tree Command
B-19