longer ethernet cable

colin9999 · 11-05-2009, 12:16 PM

Hi there
My PC is windows XP SP2. I had it connected to a router using a 5m ethernet RJ45 cat5e cable - works great.
Got a longer cable to move PC (15m). Cable is same spec but PC now displays 'limited or no connectivity' - can anyone tell me what has gone wrong?
I have tested the new cable with a laptop and it works fine.
Does the network card have limited range, do i need a new card?

When i re-connect the old cable all is well again.

Any help would be appreciated.

Thank-you

Colin

**wrench97** · 11-05-2009, 12:34 PM

I would have to think the end of the cable is not making the proper connection with your desktop RJ45 socket, try switching the end your plugging into the pc with the end in the router or return it and get another cable.

johnwill · 11-05-2009, 01:04 PM

I'd bet money the cable is wired wrong or the connectors are not properly installed.

CAT5 Cable Wiring Diagram

HOW TO MAKE YOUR OWN CAT 5, TWISTED-PAIR NETWORK CABLES

colin9999 · 11-06-2009, 02:43 AM

Quote:

Originally Posted by johnwill

I'd bet money the cable is wired wrong or the connectors are not properly installed.

CAT5 Cable Wiring Diagram

HOW TO MAKE YOUR OWN CAT 5, TWISTED-PAIR NETWORK CABLES

Thanks Johnwill

The cable works on a laptop so I dont think it is wrongly wired.

colin

johnwill · 11-06-2009, 08:45 AM

That actually isn't a foolproof method of determining if the pairs are wired properly. Many times a cable will function (perhaps slowly) with one NIC and fail with another with the pairs not wired properly. It also depends on the length of the cable. I've seen this so many times in offices where they changed the computer and suddenly the network doesn't work. Checking the cable and fixing the connections also fixes the problem.

It's cheap to check the cable, there's no reason not to eliminate that as a possibility.

GrTech2009 · 11-06-2009, 11:42 AM

How long is the cable??

**wrench97** · 11-06-2009, 11:59 AM

Quote:

Got a longer cable to move PC (15m)

GrTech2009 · 11-07-2009, 04:04 PM

If you have other wired computers try plugging that ethernet to the laptop if it doesn't work then I'm expecting it to be a NIC configuration issue.

Do you have a Gigabit Ethernet card. You mentioned that you were using a cat 5e UTP cable. Check the properties of your network card what does it say for speed and Duplex?

11-05-2009, 12:16 PM	#1 (permalink)
colin9999 Registered User Join Date: Nov 2009 Posts: 2 OS: xp	longer ethernet cable Hi there My PC is windows XP SP2. I had it connected to a router using a 5m ethernet RJ45 cat5e cable - works great. Got a longer cable to move PC (15m). Cable is same spec but PC now displays 'limited or no connectivity' - can anyone tell me what has gone wrong? I have tested the new cable with a laptop and it works fine. Does the network card have limited range, do i need a new card? When i re-connect the old cable all is well again. Any help would be appreciated. Thank-you Colin

11-05-2009, 12:34 PM	#2 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,346 OS: Win7	Re: longer ethernet cable I would have to think the end of the cable is not making the proper connection with your desktop RJ45 socket, try switching the end your plugging into the pc with the end in the router or return it and get another cable. __________________ Power Supply and Selection

11-05-2009, 01:04 PM	#3 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,546 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Re: longer ethernet cable I'd bet money the cable is wired wrong or the connectors are not properly installed. CAT5 Cable Wiring Diagram HOW TO MAKE YOUR OWN CAT 5, TWISTED-PAIR NETWORK CABLES __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

11-06-2009, 08:45 AM	#5 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,546 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Re: longer ethernet cable That actually isn't a foolproof method of determining if the pairs are wired properly. Many times a cable will function (perhaps slowly) with one NIC and fail with another with the pairs not wired properly. It also depends on the length of the cable. I've seen this so many times in offices where they changed the computer and suddenly the network doesn't work. Checking the cable and fixing the connections also fixes the problem. It's cheap to check the cable, there's no reason not to eliminate that as a possibility. __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

11-06-2009, 11:42 AM	#6 (permalink)
GrTech2009 Registered User Join Date: May 2009 Posts: 113 OS: WinXP SP3 Win 7	Re: longer ethernet cable How long is the cable??

11-07-2009, 04:04 PM	#8 (permalink)
GrTech2009 Registered User Join Date: May 2009 Posts: 113 OS: WinXP SP3 Win 7	Re: longer ethernet cable If you have other wired computers try plugging that ethernet to the laptop if it doesn't work then I'm expecting it to be a NIC configuration issue. Do you have a Gigabit Ethernet card. You mentioned that you were using a cat 5e UTP cable. Check the properties of your network card what does it say for speed and Duplex?