This read-create Integer32, ranging from 1 to 65535 and defaulting to 162, specifies the UDP port on which the trap server identified by this row of zxr10SnmpTrapSvrTable receives notifications. An admin changes it away from the default when a collector listens on a non-standard port, for instance because port 162 is already claimed by another trap receiver on the same host. For example, an admin sets zxr10TrapSvrUdpPort to 1162 for a secondary trap collector that listens on that alternate port instead of the standard SNMP trap port.