More often than not, I have problems with Cisco MDS switches because I’ve done something stupid. For example, last week I replaced some switch configs but did something to the password for the snmp admin user. As a result, I could log into the switch with admin credentials, and I could see the switch in DCNM, but I couldn’t access it using SNMP credentials. It’s a simple fix, for I’m a simple fellow.
switch1# conf t Enter configuration commands, one per line. End with CNTL/Z. switch1(config)# snmp-server user admin network-admin auth md5 yourpasswordgoeshere switch1(config)# exit switch1# copy run start [########################################] 100% Copy complete, now saving to disk (please wait)... switch1#