i just bought a cisco 2950 switch from ebay, the switch works, but when i logged into the terminal console, i keep getting this error message that says:

21:14:23: %IP_SNMP-3-SOCKET: can't open UDP socket
21:14:23: Unable to open socket on port 161

what does this mean and how do it fix it?

anyone has any ideas on how to resolve this?

its making it really hard when i try to configure the switch. it appears like every 15 seconds or so and its driving me crazy because then i can't read while i am going through the configuration setup. can anyone help me?