Enterasys Networks Enterasys D2 D2G124-12P - Manual (Page 214)

clear spantree backuproot
6-22 Spanning Tree Configuration
Usage
The Spanning Tree backup root function is disabled by default on the D‐Series. When this feature
is enabled and the switch is directly connected to the root bridge, stale Spanning Tree information
is prevented from circulating if the root bridge is lost. If the root bridge is lost, the backup root will
dynamically lower its bridge priority so that it will be selected as the new root over the lost root
bridge.
Example
This example shows how to enable the backup root function on SID 2:
D2(rw)->set spantree backuproot 2 enable
clear spantree backuproot
Use this command to reset the Spanning Tree backup root function to the default state of disabled.
Syntax
clear spantree backuproot sid
Parameters
Defaults
None.
Mode
Switch command, read‐write.
Example
This example shows how to reset the backup root function to disabled on SID 2:
D2(rw)->clear spantree backuproot 2
show spantree tctrapsuppress
Use this command to display the status of topology change trap suppression on Rapid Spanning
Tree edge ports.
Syntax
show spantree tctrapsuppress
Parameters
None.
Defaults
None.
sid Specifies the Spanning Tree on which to clear the backup root
function.Valid values are 0 ‐ 4094.