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When one of my computers is hooked up with an RJ 45 cable to the router (typically through a switch), YouTube videos will periodically pause and then restart; this never happens with computers that access the network through wifi, and stops happening when I change a computer from wired to wifi. What have I done wrong to create this situation?
Scott C Wilson
Posted 2012-01-18T14:10:44.387
Reputation: 2 210
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The only possibility that your wired network is running slower than WIFI is because..
The possibility that that your cabled network has negotiate a 10mbit connection instead of 100mbit will not cause Youtube to jitter/delay... Why..
How to do some basic tests.
Open cmd line and type ping www.google.com -t and make sure that each reply is 50-80ms on your cable, and that there are no did not reply - If there is then that proves there is a bad connection. - Find another cable, plug into another port on the router.- Also reboot the router/modem and PC.
If you have no dropped pings.. then your issue could be driver related on your OS.. does any other PC suffer the same issue on the same cable and ports?
How to check the connection speed of your network
You can also use this Utility to test yout network.
-EDIT
One thing that is very rare but did not even come to mind is Electrical interference. The OP's problem was solved when he moved his router away from the main transformer/power supply line.
As electricity does produce electromagnetic radiation, the CATx twisted wire was designed to pick up and remove it.. but in rare occasions (for example ground loop) the interference becomes interpolated with the signal and it cannot be removed, as the device thinks this is normal. Although not the same topic, this is a common problem in car audio enthusiasts, where there is a humming noise present after amplification. It is based on the same problem.
Piotr Kula
Posted 2012-01-18T14:10:44.387
Reputation: 3 538
hmm.... no dropped pings and a displayed speed of 100 Mbps (In Windows 7, do Control Panel->Network and Sharing Center->Local Area Connection.) I'm going through two ports on the two different computers that have this issue. – Scott C Wilson – 2012-01-19T01:32:20.037
Try to use the Utility in the the linke and see how fast it takes to copy a large file. at 100mb it should be around 6-20megabytes per second. If its not. Then you need to try an isiolte the problem. Change cables, ports, and even try another switch to rule out the modem. It could be the modem/router faulty.... – Piotr Kula – 2012-01-19T08:58:06.007
The one common thing is the router, and that is a bit old. Perhaps it's time for a new one. – Scott C Wilson – 2012-01-19T12:10:32.780
@ScottWilson Hope it helps. – Piotr Kula – 2012-01-19T12:20:34.460
I'm thinking now that it was electrical interference from the (power line) telephone that was sitting next to the router. I moved the phone and so far have not seen any issues. – Scott C Wilson – 2012-01-22T15:48:19.637
Quite interesting. It is possible that some sort of loop interfiereince could have caused bad performance.. I never even thought of it.. as that is very rare. We are glad that your problem is solved though. I will update my answer for future readers – Piotr Kula – 2012-01-22T16:35:13.833
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It sounds like your problem is the switch which adds an extra layer of hardware. What happens when you connect the computer directly to the router via a cable?
JonnyBoats
Posted 2012-01-18T14:10:44.387
Reputation: 564
One of the PCs that had this problem was directly connected to the router. – Scott C Wilson – 2012-01-19T01:21:46.323
Wireless will always be slower then a wire connection. So the only thing it could be is QoS issue. – Ramhound – 2012-01-18T14:35:55.703
What QoS?? Dont be daft. – Piotr Kula – 2012-01-18T14:40:28.473