serial interface debug command

[julian.coelho]

Is there a debug command for a router serial interface that will display on a console when the link goes down?

[mljohnson]

There is a command enabled by default on all interfaces, "logging event link-status" which will cause a message to be printed whenever the interface goes up or down. Again, this should be on by default for serial interfaces and you should be able to readily test this.

[paul.jones]

When I have a subinterface go down, it does not get logged. I can't find the command that you reference.

[vanwijk]

Enter the 'logging event subif-link-status'-command in your interface. That is not in your sub-interface.

Good luck

Edwin van Wijk