Default Gateway Dropping

[SRASC]

Hi. I have a Zhone 6218-I8 modem/router & have Windows 7 Ultimate as the OS. Up until yesterday afternoon my internet was working fine but since then my Default Gateway keeps dropping now & again.
I tried resetting the modem/router but the problem still exists. It only seems to drop when there's activity on the connection. I don't know what else to try. Any advice would be appreciated.

Thanks.

 

[Little Darwin]

How old is the modem/router?

I don't know router hardware, but it doesn't seem surprising that it only drops when it is active because that is the only time it attempts to do anything. It is like a car may only fail when it is doing something, even though it idles nicely.

 

[SRASC]

Not sure... but I've had it for less than a year.

 

[Little Darwin]

I had a similar issue, but it only dropped a couple of times a week... I switched routers and the issue went away. I am not sure how you would know this was the issue for sure unless you have another device to swap in for long enough to test.

 

[SRASC]

Not sure if its worth mentioning but this Zhone device I'm using a modem & router in 1

 

[SRASC]

The problem had seemed to solve itself this morning but just before I came here started back up on its own again.