Router - Arris Modem Link Issues

[joelfromoz]

I have a Linksys wireless router and an Arris telephony modem from Cox. The cox internet connection works fine directly connected to the computer but will not link with the router in-line (link light on modem does not light, internet light on router does not light).

I have been through the full tech support from Linksys. I have cloned the PC MAC addy, upgraded the firmware, tried different cables, reset the modem and router in all different orders. None of the typical fixes work. I have also tried other (new) routers with no success.

This connection was working for several months and then quit. Cox won't help because it works when connected to the PC.

Any additional ideas are greatly appreciated.

[YeOldeStonecat]

Don't need to clone the MAC, that's just a bandaid fix.

Unplug modem.
Remove battery from bottom of modem (note..no telephone for the period the battery is removed)
Link modem to WAN/Internet port of router.
Power on router, WAN interface should be set to "obtain auto"
Power on modem..give a minute to synch up
Power cycle router again
Boot up PC that's behind the router.

Should be online.

[joelfromoz]

Tried as suggested, but no luck. The modem just does not link with the router. I unplug the cable from the router and go direct to the PC and all is well.

I have had this problem in the past when first installing the router; in the past it would "clear up" within an hour. I have not been able to use the wireless this time for over a month now. I would think it is a bad router, but none of the other new routers I have tried work either. Linksys finally gave up; they had no more suggestions for me. I may get rid of the Cox telephone and see if they will just let me run on a normal cable modem, like I had in AZ.

Thanks for the advice.

[joelfromoz]

For anyone else having the same problems;

I ended up by-passing the Arris modem and installed my old Motorola Surfboard modem. I called Cox to update the MAC address for the modem and everything works beautifully.

The Arris is still sitting there running my phone lines.

[Twysted]

how may i ask did you bypass it? i just got cable phone and they installed an arris modem for it, so how would i go by-passing it? i have a motorola surfboard modem as well.

[YeOldeStonecat]

When you had the router plugged into the Arris modem...and logged into the router..what WAN IP was the router obtaining?

The only diff between the Arris and the Motorola Surfs..as far as setting up on a new device...is on the Arris you need to remove the battery when you unplug it from the AC (for several minutes)...so it will "forget" the MAC of the prior device. I've setup many of them, often changing several routers in a single day.