configure stpd ports restricted-tcn
Description
Restricts the propagation of Topology Change Notification (TCN) BPDUs on the specified port.
Syntax Description
| stpd_name | Specifies an STPD name on the switch. |
| on | Does not propagate received TCN BPDUs and topology changes to other ports. |
| off | Allows the propagation of received TCN BPDUs and topology changes to other ports. |
| port_list | Specifies one or more ports or slots and ports. |
Default
The default value is off.
Usage Guidelines
Set restricted-tcn to on to prevent unnecessary address flushing caused by persistent TCNs. Restricting TCNs is a useful when it is not possible to remove the source of the TCNs.
Example
The following example disables the propagation of TCNs in port 1:10 for STP domain r1:
configure stpd r1 ports restricted-tcn on 1:10
History
This command was first available in ExtremeXOS 15.7.1.
Platform Availability
This command is available on ExtremeSwitching 5320, 5420, 5520, and 5720 series switches.