I just realized one of my switches are not reachable by SSH and even Telnet. I just noticed that of recent, and I don't know what could be the problem.
This Switch is in a large network, and we normally connect via TACACS authentication.
In trying to connect, I get the following "Network error: Connection refused"
What can be done in this scenario?
Is this related to the access list? If yes what is the relationship between Access lists and SSH login to devices via TACACS.