I recently replaced my router and now one of my computers is not able to connect to the router/internet. I have a WAP and two computers hardwired to the router and everything works fine except for one of the hardwired computers. I removed the cat 5 cable that connects the problem computer to the router and I connected that directly to the dsl modem and it worked fine so the cable seems to be function properly. As soon as I removed it from the modem and put it back on the router it stopped working. Since the router is a good distance from the problem computer I moved the computer closer to the router and connected it directly to the router with a different cable and it worked fine. Any thoughts? I am not very familiar with cat 5 cables and how they should be wired, but it almost appears that this new router is not working with the wiring that I was using with the old router.
When you connected the Computer to the Router with a different cable, did you also connect to a different port on the back of the router? If so then you possibly have a bad port on the router if not you may want to get a new cable it sounds like. Good Luck --
Sounds to me like the cat5 cable is a crossover rather than patch. or vice-versa. Some routers can auto-sense the connection and adjust themselves to suit but they need to be power reset in order to reconfigure the ports. Read your router manual/specs. Does it have self-adjusting ports?
I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.
I do not think that this has self adjusting ports (I don't see anything in the documentation about it-it is a gigafast 4 port router EE400-R). I can relatively easily see the both ends of the cable (the jacks) that connect the computer to the router. I think it must be wired incorrectly and it is configured to be a cross-over cable. I am not familiar enough with the layout of these wires to spot this in the wiring. What should I be looking for? I would just replace this cable but it was "professionaly" installed through about 75' of walls/floors and I would rather just correct the wiring if it is not working with the new router.
Thanks, JT.
You can get a crossover adaptor that will eliminate the need to either run a new cable or re-wire the existing one. I used to have a signature but it disappeared and I just couldn't be bothered writing another so please feel free to ingore this.
If you're really interested: http://mywebpages.comcast.net/dmfar...
gives you the correct pairing for a CAT5e cable. My guess though is that your cable really is defective because once you switched to another, shorter cable your client could connect. Probably corrosion in a connector.
A new straight-thru cable will set you back ~$15 or you can clean the connectors with baking soda and vinegar, see if that works. Also check the wire pairs to make sure they're inserted correctly and snug. Could be a cut in the middle of the cable though which requires a cable tester to find. I'd just go with the new cable.
You use a patch cable from a computer to a router. Many nic's and routers can auto configure for either a patch or crossover. If you have a crossover and it doesn't work with the new router I'd more suspect some config error but try a patch cable first.
your cat5 cable should work upto 100 meters from the router! If you hold the RJ45 with the clip facing away from you, you can see if it's a cross-over or straight-thru. Far left being pin 1, and far right being pin 8! see if pin 1 on one end is the same as pin 1 on the other. If it is then it's a straight-thru if pin 1 is the same as pin 3 on the other then it's a cross-over.
