Invalid port error messages

When a user specifies an invalid LtM port, a message similar to the following is displayed.

Invalid port(s) specified as links-to-monitor.

When a user specifies an invalid LtD port, a message similar to the following is displayed.

Invalid port(s) specified as links-to-disable.

When a user specifies an incorrect delay value, an error message similar to the following is displayed:

Delay specified does not match with the configured value of <delay value>.