Component Network over IP (CN/IP)
CN/IP is defined in standard EIA/CEA-852. It is used to transport component network frames such as LON over UDP or TCP.
A word of warning: The CN/IP dissector was implemented in order to dissect LON traffic. The dissector was not tested with real CN/IP traffic, but with packets I generated myself.
Frame 10611: 70 bytes on wire (560 bits), 70 bytes captured (560 bits) Ethernet II, Src: 00:00:00:00:00:00 (00:00:00:00:00:00), Dst: 00:00:00:00:00:00 (00:00:00:00:00:00) Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1) User Datagram Protocol, Src Port: 43769 (43769), Dst Port: 1628 (1628) Component Network over IP Packet length: 28 Version: 1 Packet type: Data Packet (0x01) Ext. Header Size: 0 Protocol Flags: 0 ..0. .... = Protocol Flags: 0 ...0 0000 = Protocol Code: 0 Vendor Code: 0 Session ID: 1804289383 Sequence Number: 14034 Time Stamp: 0 Local Operating Network
The CN/IP dissector currently only supports dissection of data frames.
No preference setting at this time.
Example capture file
A complete list of display filter fields can be found in the display filter reference
Show only the CN/IP based traffic:
You cannot directly filter CN/IP protocols while capturing. However, if you know the UDP port used (see above), you can filter on that one.
Capture only the CN/IP traffic over the default port (1628):
udp port 1628
- Unfortunately the standard is not freely available