Occasionally, an SNMP monitoring server will show "No Response" or "SNMP Error # -2003" in the logs against a Sonicwall. This error message appears when the CPU or RAM of the Sonicwall is overloaded. This is because processes in the Sonicwall are weighted, and during busy times, priority is given to essential processes. In the SNMP settings for Sonicwall devices, the priority for the SNMP subsystem can be raised so when the CPU or RAM is overloaded on the device it will still report through the SNMP Agent.
The work around is to raise the priority of the SNMP process on the Sonicwall.
To do this take the following steps 1) Log on to the Sonicwall management page and go to System | SNMP 2) Click the Configure button to the right of the Enable SNMP check-box 3) Click the Advanced tab 4) Check the box "Increase SNMP subsystem priority" 5) Click Accept at the top of the page.