WN2500RP stopped allowing wired connections to access internet (except my laptop!)

Hi Christian,

1) I can't move the ADT Gateway as it is hard wired in it's current location which is not near my main router so I don't know if it would work if connected directly to the main router instead of to the extender.  The Vonage router does work correctly when connected to the main router.

2) My network topology is as follows:

 - AT&T Fiber internet access via the AT&T Uverse modem/wifi router - everything connected to this is via wifi, nothing by cables

 - WN2500RPv2 connected to the AT&T Uverse modem/wifi router by wifi

 - Vonage Linksys RT31P2 router connected to the WN2500RPv2 by cat 5 cable

 - ADT Pulse Gateway PGZNG1 connected to the WN2500RPv2 by cat 5 cable

3) Model numbers as noted in the topology description above.

As noted, this all worked perfectly well until a few weeks back when suddenly both the ADT Gateway and Vonage router lost their connection to the WN2500RPv2.  As we've now tested, I can connect my laptop to the WN2500RPv2 via the same cable as used by either the Vonage or the ADT devices and get internet access, and I can connect the Vonage router to the AT&T main router and it works well.

It's all rather maddening...I guess I could simply replace the WN2500RPv2, but I really want to find out what happened - why this has suddenly stopped working!

Thanks,

Nick