Are there any guides on the Cisco support site which deal specifically with monitoring performance on LAN switches running IOS?
There are a lot of different commands to show things like interface counters, CPU utilization, etc. I'm not trying to troubleshoot any specific issue. More, I'm trying to get a better idea of where to begin when I'm dealing with a "the network is slow!" issue and I want to examine a switch. I've looked through the "Configure," "Troubleshoot," "Maintain and Operate" areas; there are many documents that touch on these commands but I haven't found any that focus on monitoring and gauging performance.
Any help of suggestions are appreciated.
There isn't a guide as each switch platform have different ASICs and services.
The best way is to become familiar with the documentation for the release you are running.
Commands can be added or removed between IOS releases and that information can be contained in the documentation for that release
or within the Release Notes.