Controls and reflects the UDP port which will be listened for as the destination port on received SNMP packets and used as the source port on subsequent SNMP replies. Setting this object will result in an immediate change of the SNMP port number, although the SNMP reply to the set request which modifies this value will still be sent using the port on which it was received. This prevents the sending SNMP manager from receiving a timeout on the set request. This value is NOT stored to non-volatile storage and will revert to the default value on system reboot.