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New Member

udp port 2066 traffic from 678 DSL router

I have a 678 DSL modem/router, and on occasion, usually when the DSL phone line is disconnected, I get a lot of network traffic from the 678 on the local ethernet. The traffic is on udp port 2066, and I have no idea what it is. Does anyone know what the 678 is trying to accomplish with this network traffic??


Re: udp port 2066 traffic from 678 DSL router

Looking at the IANA assigned port numbers,, port 2066 is unassigned.

Is this traffic originating from the IP address of the ethernet LAN interface or is it different.

Is the traffic broadcast on the LAN segment?

New Member

Re: udp port 2066 traffic from 678 DSL router

Ah, it seems to just be traffic intended for the Cisco Commander software for Windows that comes with the modem/router. I was able to capture a few packets and see the phrase "WAN 0 physical layer is down" which the 678 was just sending out to any Cisco Commander software on the LAN. The traffic is send out the LAN interface to Now I understand what is going on.