CDP Forum

[Svein]

CDP uses the following ports:

UDP	TCP	Type - Direction	Service	Comment
2040-2047		send/listen unicast, multicast and broadcast	Messenger	Basic CDP Messenger
	80-90	listen	WebServer	Port 80 is default, but may be configured to any other TCP port. If the selected port is default, the WebServer will try to use the next, etc.

Add-ons and IOServers will also use other ports, for instance:

UDP	TCP	Type - Direction	Service	Comment
	502	Send	MODBUS/TCP	CDP connects to remote TCP port 502
502		send	MODBUS/UDP	CDP application sends to remote UDP port 502, which responds to the outgoing/source port.
3000		send/listen multicast	CDP Redundancy fast synch	Can be configured to any otder UDP port
4000		send/listen multicast	CDP Redundancy slow synch	Can be configured to any otder UDP port
4550		send/listen multicast	RDManager status port	Can be configured to any otder UDP port
2000		send/listen unicast/multicast	UDPIOServer
161		outgoing unicast	SNMPManager Get/Set port	Set/Get standard port for SNMP
162		listen unicast	SNMPManager Trap port	Standard Trap port for SNMP
30543		listen unicast	SNMPManager source port	Can be configured to any otder UDP port

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Svein Erling Linge, ICD