spanning-tree tcn-guard
Syntax
spanning-tree tcn-guard
no spanning-tree tcn-guard
Description
Disables propagation of topology change notifications (TCNs) to other STP ports. Use this when you do not want topology changes to be noticed by peer devices.
The
no
form of this command, enables propagation of topology changes. By default, propagation is disabled.
Command context
config-if
Authority
Administrators or local user group members with execution rights for this command.
Examples
Enabling
tcn-guard,
which disables propagation of topology changes:
switch(config-if)# spanning-tree tcn-guard
Disabling
tcn-guard
, which enables propagation of topology changes:
switch(config-if)# no spanning-tree tcn-guard