we are using in the company currently local user's created on each switch for telnet. I eared about TACAS, but I wonder how difficult it is to implemente, and can I use the Cisco ACS Server which we have already? Can we keep a local user, in case that central server is not working?
You can certainly configure your switch to use TACACS for authentication. You can provide various alternatives for the switch in case the TACACS server is not available. If you already have ACS server then implementation of TACACS on your switches should be quite easy. This link should give you enough information to get started.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...