Reference v4.1.0 Instruction Manual

1248 Network OS Command Reference

53-1003115-01

spanning-tree restricted-tcn

Restricts the topology change notification Bridge Protocol Data Units (BPDUs) sent on the port.

Synopsis spanning-tree restricted-tcn

no spanning-tree restricted-tcn

Operands None

Defaults The restricted TCN is disabled.

Command Modes Interface subtype configuration mode

Description Use this command to restrict the topology change notification BPDUs sent on the port.

Usage Guidelines Enter no spanning-tree restricted-tcn to disable this parameter.

If xSTP is enabled over VCS, this command must be executed on all the RBridges.

Examples To restrict the TCN on a specific interface:

switch(config)# interface tengigabitethernet 0/1

switch(conf-if-te-0/1)# spanning-tree restricted-tcn