I have a Vodafone supplied tc2710 on their cable network of course. Suddenly all of the lan ports have died. No lights for lan 1-4 on the front, and devices off lan can't get DHCP/internet access. Have tried swapping around cables and ports but to no avail. WiFi is working fine.

Before I do a thorough process of elimination in an awkward cupboard, has anyone experienced this problem before?

Cheers