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Old 05-08-2012, 11:38 PM   #1
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Default Can't find the source of latency

Happening for 2-3 weeks now. The Internet has been running really slow not only on this computer, but on all the other computers in the household. I'm currently using a Linksys EA4500 router, but had a Linksys E4200 before that. I thought the E4200 was faulty so I took it back and got a replacement. The internet however still remains slow, so we upgraded to the EA4500 but to no success. I tried several methods to find the source and i'll list them and the results.

Resetting modem/router: Internet is fast initially then resumes to being slow
I have unplugged the cable from the modem to the router and put the cable directly to the computer and the Internet is really fast, but it doesn't make sense to me because this was tested on 2 brand new routers. I have tried resetting to defaults on the current EA4500 model and the past E4200 but no changes.

I have ran a traceroute (just heard about it and have little knowledge) with the router and the 2nd hop after the router always shows larger latency. Another traceroute with the modem connected directly to the computer has low latency.

I don't know of any other information I can give but I'm sure I can retrieve it if someone asks for it. So if any help could be provided, i'd appreciate it.
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Old 05-09-2012, 12:37 AM   #2
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Default Re: Can't find the source of latency

Have you tried using a different cable from the router to your computer? Seeing that taking the cable out of the router and going direct to your computer is fast, I think it's a bad cable.
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Old 05-09-2012, 08:11 AM   #3
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Default Re: Can't find the source of latency

Yes I have switched the ethernet cable from the router to my computer and that didn't work. I also tried switching the cable from the modem to the router as well but no positive outcome.
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Old 05-09-2012, 08:41 PM   #4
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Default Re: Can't find the source of latency

Have you tried just plugging straight into the modem and see what happens. I know it will take out the internet but maybe your ISP did not set something up right at the node.
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Old 05-09-2012, 08:49 PM   #5
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Default Re: Can't find the source of latency

Yes he has (second paragraph).

I'm disappointed the cable wasn't it as that was my only idea. I'll keep mulling over it though and think of something.
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Old 05-09-2012, 10:19 PM   #6
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Default Re: Can't find the source of latency

Yea it confuses me and I don't want to take it directly to the ISP without confirmation that the problem is on their end.

Also another note, when I open up my router information and go to Status Tab > Ports. Internet port speed is marked at 10/100Mbps while the local port speeds show 3 marked at 1Gbps and 1 in the 10/00Mbps. Idk if that has any effect on the latency issue and I can't seem to recall if that was the same before i got the recent latency.
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Old 05-10-2012, 12:19 PM   #7
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Default Re: Can't find the source of latency

Is it a wireless router? Is it secured? Try changing the wireless password as you may have neighbors hogging the bandwidth especially since it's really fast when you direct connect.
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Old 05-10-2012, 07:03 PM   #8
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Idk about it being a wireless router. But the model is a Linksys EA4500 router.

I also have changed the password multiple times and have restricted guest access to zero with the exception of the five family members in the household. However the router already recognizes their devices.
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Old 05-12-2012, 01:50 PM   #9
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Default Re: Can't find the source of latency

Just an update: A technician from my ISP came over and inspected the router and modem and called some other people who eventually I think, just refreshed the modem. As for the results, the latency doesn't seem to have been removed but looks like it's fluctuating.
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Old 05-12-2012, 01:59 PM   #10
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Default Re: Can't find the source of latency

It is possible that you got 2 defective routers. I've encountered 2 faulty Linksys EA4500 routers out of the box.
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