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AT&T Cable / Linksys Router

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ivymike

Technical User
Sep 3, 2002
5
US
Hello all,

I know that there was a discussion of a similar-sounding problem in thread583-453683 , but I think that the problem I'm having may be slightly different.

I have a Linksys BEFSR81 router, and an AT&T broadband cable internet connection. When my connection was first established, it worked great. It kept working great for approximately four days, but then began to become flaky. In the middle of browsing the internet, the connection would quit working. When the connection would quit, the following behavior was exhibited:
* Pinging the router would get normal (quick) responses
* Pinging outside the LAN would get no response
* There was no name translation available (DNS)
* The router status panel would show a dynamic IP address, but if I tried to release & renew it would not get a new address
* The modem and router would show constant WAN traffic, even though no LAN traffic was indicated
* Power cycling the router would not restore the connection
* Power cycling the modem would restore the connection
* AT&T tech support reported that their diagnostics were showing "noise" on the connection (whatever that translates to)

When the problem began happening, a power-cycle would get me back online for several hours, but eventually the connection would fail again. Over time, the time-between-failures decreased to just seconds. It got to the point where I could power cycle, wait for the lights to light, load one web page, power cycle, wait for the lights, etc...

AT&T replaced the modem, with a brand-new modem from a different mfr, and the problem went away for about a week. Tonight when I got home from work, the connection was down. The symptoms above applied. Power cycling restored the connection for approximately 2 hours, after which it failed again.

I swapped the BEFSR81 out for a D-Link DI-704, and the connection seems to be working so far. I'd rather have the 8-port router working, if possible. Any ideas what might be happening?

 
going back to what you said about the at&t support. if they seen "niose" on your connection (meaning SNR, signal to noise ratio) that would be the issue. what you discribing sounds like that to a tee. it is almost like everything is fine and then someone cuts the cable to your modem. once the snr clears up then you're fine. this will happen until a tech/eng is called out and they find the snr on your blade. keep hounding them until the problem goes away. my advise to you is not to mention the router and always say it is your p.c. they see not a router (they'll never know). sometimes support techs for cable internet will not help you out at all if you have a router hooked up to it. i know from experience being one of those jackasses. :)
 
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