10-14-2009 08:40 AM
I have noticed that my cable modem is resetting every once in a while. While it does that, I lose internet connection and I have to wait for the lights to stop flashing as the modem comes back up. I looked in the log and saw time out messages. Here's the latest one
I thought my dinosaur router was failing so I got a new one and installed that last night but the time outs still happen. I have an Arris TM502G modem.
Is there something else I can look at?
10-14-2009 10:49 AM
This is where we ask posters to start:
It may not be the modem. It may be that the signal stats are out of spec or close to it. We especially need you to post them. We are looking for the downstream and upstream power level figures and the SNR (signal to noise ratio) figure.
10-14-2009 11:04 AM
I'll run tracert and ping when I get home but I managed to send the cable status stuff to work in case I needed it. I can't run the tweak test because I have Vista 64 bit and says it's not advisable.
Ip lease time is set to a week. that time out error happens whether I am connected to router or not. I even bought a new router in case that was the issue. I've also reset all equipment several times but with no change. I have mcafee and haven't tried turning off the firewall but I'll try that when I get home too.
That's all I can think of at the moment, I'll post tracert and ping when I get home to test those.
Freq/Power: 603.000 MHz -12 dBmV
Signal to Noise Ratio: 34 dB
Freq/Power: 37.000 MHz 52 dBmV
Channel Type: DOCSIS 1.x (TDMA)
Symbol Rate: 2560 kSym/sec
10-14-2009 09:57 PM
Below is the tracert and the ping information. I also turned off the firewall as advised and ran ipconfig /flushdns and ipconfig /registerdns. If you have any other suggestions, please let me know.
10-15-2009 09:29 PM
10-15-2009 09:40 PM
Thank you for the information. I live in an apartment building and haven't really talked to my neighbors so I don't know them well enough to ask stuff. Just tonight, i hadmore time outs. I've tried futzing with the router settings, I've tried a few different things, but still got the time outs. I may see if I can move the cable modem to a different wall port and see if that changes anything. Just need to get another longer coax cable
10/15/2009 18:25 20000200 3 No Ranging Response received - T3 time-out
10/15/2009 18:33 20000200 3 No Ranging Response received - T3 time-out
10-15-2009 09:52 PM
10-15-2009 10:31 PM
While you can interogate your cable modem to see it's tx signal strength only Comcast can read the signal strength of what they are receiving from your cable modem (i.e. how much of what your cable modem is sending is actually making back to the head end).
W.I.W., the plant is RF/coax only to the local node. It is fiber optic cable from the node to the headend.
10-22-2009 10:05 PM
I have been having problems with my cable modem continually resetting, expecially at night. I had a tech come out today and he tracked it down (most likely) to a 20 yr old analog TV I had on the same line as the modem. It was causing some type of static interferance which was interfering with the outgoing signal on the modem. The more I think about it, th emore it makes sense. Guess it is an excuse to get a new TV for my play room.
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