Information Commands
Spanning Tree information
The following table describes the Spanning Tree Protocol (STP) information commands.
Table 22 STP information commands
Command |
| Usage |
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show |
| Displays information about the spanning tree group. |
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| Command mode: All |
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| Displays STP bridge information. |
show |
| |
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| Command mode: All |
|
| Displays STP information. |
show |
| |
|
| Command mode: All |
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The following command displays Spanning Tree information:
show spanning-tree stp <1-128> information Command mode: All
upfast disabled, update 40
Spanning Tree | Group 1: On (STP/PVST+) |
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VLANs: 1 |
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Current Root: |
| Port | Hello MaxAge FwdDel |
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8000 00:02:a5:d1:0f:ed | 8 | 20 | 2 | 20 | 15 |
| |||
Parameters: Priority | Hello | MaxAge | FwdDel |
| Aging |
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| ||
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| 32768 | 2 | 20 | 15 |
| 180 |
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Port | Priority | Cost | FastFwd | State |
| Designated Bridge | Des Port | ||
1 | 0 | 0 | n | FORWARDING * |
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2 | 0 | 0 | n | FORWARDING * |
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3 | 0 | 0 | n | FORWARDING * |
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The switch software uses the IEEE 802.1d Spanning Tree Protocol (STP). If RSTP/MSTP is turned on, see the “Rapid Spanning Tree information” section for Spanning Tree Group information. In addition to seeing if STP is enabled or disabled, you can view the following STP bridge information:
•Status of Uplink Fast (upfast)
•Current root MAC address
•Path cost
•Port
•Hello interval
•Maximum age value
•Forwarding delay
•Aging time
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