Download speeds greatly varying, from 50 mbps down to 2 mbps. Thanks for any help!

Sdhines

Reputable
Sep 30, 2015
5
0
4,510
Laptop Model:
1zv766x.png

Modem/Router(given from ISP):
2uygefo.png

Router(I bought recently):
zuio9l.png

Speed tests as of today:
106mtuf.png

Nearby surrounding networks:
25ztkiq.png

ISP: Time Warner Cable and it is a cable modem connection. We are paying for 50mbps Download and up to 10mbps Upload.

Number of Devices: Ranging from 3-6, usually 2 laptops(one gaming), and 1-2 xboxes.


Now, with all this information I will try to be as descriptive as possible in my situation and explain what exactly is happening, again anyone willing to help and throw ideas out there is very appreciated.

To start, My roommates and I moved into our apartment building near the beginning of August and got internet around the 10th of August. Up till about the beginning of September, our internet seemed to handle everything perfectly. I would be gaming/streaming games on my laptop and playing my xbox one, while my roommates played on their xbox ones and watched youtube/netflix as well. Overall we had no lag issues and had 5-7 devices connected. However recently the connection has gotten incredibly inconsistent and the lag and low speeds is just overwhelming. Today we had Time Warner Cable (Our Internet Provider), come out and check it and they said that the cable going from our wall in our apartment down to, lack for a better term, internet box near the front of the apartments was old and needed replaced because the 8 frequencies that were suppose to be going through at full strength was cut to only 4 going through because of how old the cable was and how many times it had been painted over. Regardless, he replaced it with a new cable and the speeds tested were great! between 50-60mbps. However, shortly after he left, the speeds were dipping down to below 10 and I was experiencing lag in my Skype call. After doing even more research today, I found that living in an apartment building can cause routers to interfere and going onto a different network channel can work well. Well, I changed from 6 to 9 and the mbps were great yet again! Up to 50-55 down and I was happy, until this, just like all the other times, was short lived and a few minutes later, my connection was back down to less than 5 mbps down. And thus, here I am seeking any help in this manner.
The pictures above show the information on the router/modem given to us and then the router that I bought to hopefully increase connection, which it did not do. I got in contact with Time Warner Cable when I bought the new router and they helped me "bridge" it but that still did not help the inconsistency that we have been dealing with. I posted the speed tests from just today and you can see the fluxing of speeds. Many tests that are slow I don't even finish because I just close the browser. Another picture includes the networks around me shown via NetSpot. This shows how I am the only router on channel 9 and I was unsure if this would be helpful but included it just incase.

Any questions that I can further answer I will try my hardest and thank you so much for giving this any attention. :)
 
Solution
Yes.

First the event logs show a variety of timeouts (MDD), partial service events (RCS), and timing synchronization failures (SYNC).

Lots of "correcteds" on Downstreams 1 and 7. Downstream 8 as well but not as many.

I think there is still a connectivity/cabling problem. Since it seems to be intermittment I suspect a lose connection. Technician may have missed a problem upstream of the cable that was replaced. And in all fairness, if the problem is intermittent, then the technician may not have seen the problem during the original visit.

The logs also provide MAC addresses. Identify those devices. D4:05....etc., and 00:01....etc.. Router (Certified Refresh?) and Arris respectively I suspect. Try a different known...

Ralston18

Titan
Moderator
Two things to help gather more information:

1) See if you can log into the Arris using 192.168.0.1

Ref:

http://setuprouter.com/router/arris/dg1670/login.htm

If that works you may find some information that includes events/errors that have taken place. Most of the information will not make a lot of sense per se. However, problems usually stand out.

2) Log into your router - probably 192.168.1.1 and look at the logs.

Should provide some insight with regards to what the router is experiencing.

Note errors/error codes especially. They will provide additional information to work with.
 

Sdhines

Reputable
Sep 30, 2015
5
0
4,510
1) I cannot/Do not know how, to connect to my Arris modem because everytime I enter that Ip or the one for my router, both take me to my router set up page.

2) I am unsure of how to access "logs" in my router setup page. I have linksyssmartwifi and I don't see a tab for logs.

Thank you so much for the response though!

Edit: I just enabled logs on my router settings!
 

Ralston18

Titan
Moderator
Your Arris IP may be 192.168.100.1 (Mine happens to be that.)

If not 192.168.100.1 you will probably have to check their website or otherwise "google" a bit. ISP's do not like to give customer's the ability to monitor the services provided (or lack thereof sometimes).

Good that you were able to enable the router logs. Just getting familar with "normal" entries can be helpful. Something not "normal" can prove quite helpful. Especially if an error code is provided.

Just go through the various things you normally do and check the router logs: especially when all is working and then again when not.

Likewise, if you can access the Arris page print out the settings for reference. Both when working (if possible) and then again when not working.
 

Ralston18

Titan
Moderator
Yes.

First the event logs show a variety of timeouts (MDD), partial service events (RCS), and timing synchronization failures (SYNC).

Lots of "correcteds" on Downstreams 1 and 7. Downstream 8 as well but not as many.

I think there is still a connectivity/cabling problem. Since it seems to be intermittment I suspect a lose connection. Technician may have missed a problem upstream of the cable that was replaced. And in all fairness, if the problem is intermittent, then the technician may not have seen the problem during the original visit.

The logs also provide MAC addresses. Identify those devices. D4:05....etc., and 00:01....etc.. Router (Certified Refresh?) and Arris respectively I suspect. Try a different known working ethernet cable and then a different LAN port if applicable for the devices involved. Watch the logs.

(It might help if you keep you own little "downtime" log. Could discover a pattern to the speed drops.)

As you can see there a quite a few acronyms involved with DOCSIS. I will not even attempt to explain all that as it would quickly become TL-DR. And quickly go beyond my general level of understanding.

If you are interested here is a great link regarding DOCSIS:

http://volpefirm.com/docsis-basics-tutorial-series/

Just read or scan through the Volpe presentations and you will probably be able to get a better understanding of DOCSIS. That will help you with some recognition of what the logs indicate and may even help you narrow down the problem a bit more.

Hopefully there will be another forum member who can look directly at the logs and say something like "go there, fix that".

Good chance that you wll need the technician to come on site again. Not sure that those errors are fixable from a remote location.

Probably best to just call Time Warner again.



 
Solution

Sdhines

Reputable
Sep 30, 2015
5
0
4,510
Thank you very much for this, I am glad that you could interpret the information for me and I will try the suggestions and account for my logs, thank you very much! I will choose this as a solution in another day or two to see if anyone else say anything.
 

Sdhines

Reputable
Sep 30, 2015
5
0
4,510
I had a technician come out and they cut the cable and replaced it with something? Not sure but in all the cable was replaced that went from my modem to the wall. The signals are all good now and all even SNR numbers. Thank you very much! So helpful