1. The SNMP daemon (snmpd) must be running which enables the protocol. This can be checked at the Linux prompt.

2. Any required configuration such as community strings and so on must be set up in snmpd.conf. This can be checked at the Linux prompt.

3. If traps are enabled, the trapd daemon must be running. This can be checked at the Linux prompt.

4. Enable logging (logging level daemon-name <0-7>) and traces (debug snmp-server) to find more about failure of a command.

5. Snmpget or snmpwalk may timeout, in case show techsupport command is in progress. In such case, provide the timeout (option -t) while invoking snmpget or snmpwalk.