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WRT120N Router and Comcast

post #1 of 12
Thread Starter 
Yeah so long story short for a few months I was having a lot of connectivity issues where my comcast modem would randomly reset itself multiple times a day. I called them and they gave me a new modem and did some work on the line because they said the signal coming in from the pole to the modem was to strong so they put a equalizer on it. Before I had this problem maybe a year ago, My ping was great and I wasn't having many problems and my ping didn't fluctuate like it does now. Like Battlefield 3 and League of Legends my ping is usually 30-40 on BF3 and 86-90 on League but now my ping is a constant 100+ on league and my ping is 30-40 on BF3 but it jumps up to 60-90 every few minutes.

I purchased the Linksys Cisco WRT120N for wireless internet access for my mom mainly because she uses her iPad, I bought it a couple of months ago. My old router wasn't wireless but it was a linksys and my ping wasn't bad at all, Infact I wasn't having any problems. But for some god awful reason I cannot figure this out. I've updated the firmware on the router and still nothing has changed, I have physically reset both the modem and router at the same time and still having the same problem. I setup on my router to have a static ip and still having issues. I honestly don't know if its something to do with my router or comcast but when I do go straight from the modem my ping goes down but still fluctuates.

also I am hardwired into the router, I forgot to mention that.

Any help is greatly appreciated and I will provide any more information if I can!

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Edited by Brandon1337 - 11/6/12 at 6:46pm
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post #2 of 12
So you do not experience these fluctuations while hardwired into the modem correct?
post #3 of 12
Thread Starter 
Quote:
Originally Posted by Xinoxide View Post

So you do not experience these fluctuations while hardwired into the modem correct?

correct
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post #4 of 12
Ok, After refreshing the thread 35 Times I finally see you edited it.

I am going to ask you for some information. It will be alot but it will help me to diagnose your modem as well as the signal feeding it.

I want to know the model of your modem for starters, and that's going to be the easy part.

I also want to know, simply if you have digital video service through this provider.
post #5 of 12
Thread Starter 
Cisco DPC3000

Yes I do, I have 2 DVR's and 2 regular boxes.
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post #6 of 12
Oh nice, we have been playing the the 3008 for our upcoming 310mbps upgrade. This is a good modem.

I want you to connect directly to the modem, and set a static IP address on your computer of 192.168.100.2.

Then use your browser to go to the management port 192.168.100.1.
-if it asks for a password, leave it blank or try admin/W2402 ( little research points to Comcast using this on these models ). If you are locked out we can take a different path.

Inside of here, I want the forward ( downstream signal levels ) and any other pertinent information ( screenshots are awesome, just blur your public IP if it makes an appearance ).

If you are locked out of the modem by password, Is it possible one of those cable boxes can be hooked up to your monitor?
post #7 of 12
Thread Starter 
How would I go about getting into the modem?
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post #8 of 12
Just ran a test and was successful. Try to login to 192.168.100.1 without directly connecting and setting a static. I was able to do it through one of my Cisco 1841 Routers.

username/password blank/blank, admin/W2402 or admin/password


If the modem is locked out, we can put a cable box on that outlet ( as long as it can receive HD channels ) and I can try to calculate the signal tilt.

What I will be doing is trying to discern if you have any crazy fluctuations in signal strength between different frequencies that will point to one cause or the other.

say the lower frequencies are way low and the high frequencies are unnaturaly higher, you may just have to replace a fitting. If its the other way around, it can be damage to the cable itself. Noise on the line will have spikes between frequencies.

I have been known to get people outside at the security box with a modem and laptop on an extension cord for troubleshooting. lol.
Edited by Xinoxide - 11/6/12 at 8:05pm
post #9 of 12
Thread Starter 
one thing I will mention is that I have a speedboost on my line as well that is plugged into an outlet inside my home. and when the tech was out here last time he did replace a fitting.
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post #10 of 12
I have put brand new fittings on, that looked perfect, and didnt even work. :\

Can I get an image of this techs handy work?

The modem shouldn't be on an attenuator OR a cable amp.

But its working so I don't think it is.

Just wait until I send you on the channel hunt at the outlet where the modem is. I hope you are willling to move a box to where the cable modem is hooked up so we can get some signal readings.

EDIT

may have to pick this up tomorrow. I will keep up with the thread.
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