I have a 2811 making a beeping noise every day for about minute or so. Alarm on router is flashing consistently w/ the beeping when it occurs. No indication in the log or diag. Could this be a problem w/ the fan going out? Any suggestions?

I have a 6509 switch running vers 12.2. I seem to have lost management to the switch ping/telnet access. The switch is working and i'm able to console. Does anyone know why, or how I can fix this? Thanks.

I've lost complete management to my 6509 switch. I can't ping or telnet to the switch. I've consoled into it, and do not know what the problem is. Does anyone know what the problem can be or how I can fix it? This 6509 is running ver 12.28 [SXF7]