Use this command to enable or disable the Spanning Tree backup root function.
| sid | Specifies the Spanning Tree on which to enable or disable the backup root function. Valid values are 0 - 4094. |
| enable | disable | Enables or disables the backup root function. |
None.
All command modes.
Enabled by default on bridge(s) directly connected to the root bridge, this prevents stale Spanning Tree information from circulating in the event the root bridge is lost. If this happens, the backup root will dynamically lower its bridge priority so that it will be selected as the new root over the lost root bridge.
This example shows how to enable the backup root function on SID 2:
System(rw)->set spantree backuproot 2 enable
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