Information Commands 33
Rapid Spanning Tree and Multiple Spanning Tree information
The following command displays RSTP/MSTP information:
show spanning-tree stp <1-128> information
Command mode: All
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upfast disabled, update 40
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Spanning Tree Group 1: On (RSTP)
VLANs: 1-3 4095
Current Root: Path-Cost Port Hello MaxAge FwdDel
8000 00:00:01:00:19:00 0 0 9 20 15
Parameters: Priority Hello MaxAge FwdDel Aging
32768 9 20 15 300
Port Prio Cost State Role Designated Bridge Des Port Type
---- ---- ---- ------ ---- --------------------- -------- ----
1 0 0 DSB
2 0 0 DSB
3 0 0 DSB
4 0 0 DSB
5 0 0 DSB
6 0 0 DSB
7 0 0 DSB
8 0 0 DSB
9 0 0 DSB
10 0 0 DISC
11 0 0 FWD DESG 8000-00:00:01:00:19:00 8017 P2P2,Edge
12 0 0 FWD DESG 8000-00:00:01:00:19:00 8018 P2P
The switch software can be set to use the IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) or the IEEE 802.1s
Multiple Spanning Tree Protocol (MSTP). If RSTP/MSTP is turned on, you can view the following RSTP bridge
information for the Spanning Tree Group:
• Status of Uplink Fast (upfast)
• Current root MAC address
• Path-Cost
• Port
• Hello interval
• Maximum age value
• Forwarding delay
• Aging time
You can also refer to the following port-specific RSTP information:
• Port number and priority
• Cost
• State
• Role
• Designated bridge and port
• Link type
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