you should be able to ping even with switch and server lan ports mismatch... but with a lot of loss, not able to ping is more of a concern...
Check what methyl suggests, and from the box try to ping...
The most important : What I said above is true if you see no extravagent load at the console, even worse: You have the impression the system is living his own life forgetting to work...( I had a...
If the server is fine, you are looking at the wrong place...
Check your lan interfaces then do the same on the switch side, is there a mismatch between them?
If you are on 100FD fixed, don't let...