Allied Telesis AlliedWare Plus User Manual

C613-50100-01 REV C Command Reference for x930 Series 621
AlliedWare Plus™ Operating System - Version 5.4.6-1.x
SPANNING TREE COMMANDS
SPANNING
-TREE MST INSTANCE RESTRICTED-TCN
spanning-tree mst instance restricted-tcn
Overview Use this command to prevent a switch port from propagating received topology
change notifications and topology changes to other switch ports. This is named
restricted TCN (Topology Change Notification). A TCN is a simple Bridge Protocol
Data Unit (BPDU) that a bridge sends out to its root port to signal a topology
change.
Use the no variant of this command to stop preventing the switch port from
propagating received topology change notifications and topology changes to
other switch ports for the specified MSTI (Multiple Spanning Tree Instance).
The restricted TCN setting applies only to the specified MSTI (Multiple Spanning
Tree Instance).
Syntax
spanning-tree mst instance <instance-id> restricted-tcn
no spanning-tree mst instance <instance-id> restricted-tcn
Default Disabled. By default, switch ports propagate TCNs.
Mode Interface Configuration mode for a switch port interface only.
Examples To prevent a switch port from propagating received topology change notifications
and topology changes to other switch ports, use the commands:
awplus# configure terminal
awplus(config)# interface port1.0.2
awplus(config-if)# spanning-tree mst instance 3 restricted-tcn
To stop preventing a switch port from propagating received topology change
notifications and topology changes to other switch ports, use the commands:
awplus# configure terminal
awplus(config)# interface port1.0.2
awplus(config-if)# no spanning-tree mst instance 3
restricted-tcn
Related
Commands
instance vlan (MSTP)
spanning-tree priority (port priority)
spanning-tree mst instance
spanning-tree mst instance path-cost
spanning-tree mst instance restricted-role
Parameter Description
<instance-id> Specify an MSTP instance in the range 1-15. The MST instance must
have already been created using the instance vlan (MSTP)
command.

Allied Telesis AlliedWare Plus Specifications

General

Brand	Allied Telesis
Model	AlliedWare Plus
Category	Switch
Language	English