Problem with creating own ethernet cables

[udpstorm]

I am experiencing some problems creating my own cables. I crimp both ends and connect PC to LinkSys cable router and I get a link light but no action. No DHCP nor will a static address work. I have tried various lengths of cable, different crimpers and crimp brands and no luck. I used a meter to confirm continuity through the cable. I can't seem to find out what the problem is.

I need to run lengths of 120 to 300 feet. My understanding is that I should be able to run up to 331 feet?

 

[bcastner]

A straight-thru patch cable with all conductors 1-1 2-2 3-3, etc. is the likely problem. You are only making connection on one of the two needed pairs because of "split-pairs."

Use the 568A Standard:

http://www.twinnsolutions.com/Networking/Networking-TelecomCableColorCodeDiagram1.4.pdf

 

[ciscoexpert]

The cross cable has 1,2,3,6 wires crossed. Check if you crimped and crossed them properly.

Check this link

http://www.jaysafe.co.uk/technical/rj45.asp

Sankar Nair
General Datatech l.p.

http://www.generaldatatech.com

 

[bcastner]

The Linksys connection would be straight-through, as I stated, and not a cross-over.

 

[nemotek]

Crossover cable are genereally used for hub to hub connections. the send and receive pairs are crossed between CONNECTOR A and CONNECTOR B on eiher end of the cable.


568 A/ B Crossover Standard

Connector Connector
1 3
2 6
3 1
4 5
5 4
6 2
7 8
8 7

568 B Straight connections

Pin Cable Colors
1 White Orange
2 Orange
3 White Green
4 Blue
5 White Blue
6 Green
7 White Brown
8 Brown

 

[patrckb]

I love pictures.

A great picture of the pin outs is at

http://www.linksys.com/faqs/default.asp?fqid=20

Enjoy!
Patrick

Patrick Bartkus, CCNP, CNX, SCM Sr. Network Engineer
GA Dept of Labor IT Network Services
If truth were not absolute, how could there be justice?

 

[bf0x]

You might want to get a cable tester. Small fortune in some standards but helps overtime in troubleshooting cabling problems. Even though the individual cables may look like they connected to the connector doesnt always mean they did. Always best to check. 568B in my opinion is the better of the two.

 

[nemotek]

Hi,

here's a great link for making your own cables

http://www.duxcw.com/digest/Howto/network/cable/index.htm

http://www.makeitsimple.com/how-to/dyi_crossover.htm

http://www.combsnet.com/cable/Installing/making_cables.html

http://www.linksys.com/faqs/default.asp?fqid=20

 

[onepair]

pc to pc - crossover look it up

pc - hub/switch just match the freaking ends to each other

other 568b is the defacto from what I read from the ISO

 

[1Drisnil]

Cable Guides:

RO (Roll-Over): Use a ROLL-OVER cable to connect a Host (PC) to a CONSOLE port.

CO (Cross-over): use a CROSS-OVER cable to connect network devices of the same "Family".

ST (Straight-thru): Use a STRAIGHT-THRU cable to connect devices of different "Families".

What I mean by "Families" is this:

Layers 1 & 2 is one Network Device Family.
Layers 3 thru 7 is the other Network Device Family.

Layer 1 & 2 Devices include:
Bridges, Switches,Hubs, and repeaters.

Layer 3 ~ 7 Devices* include:
Hosts(PC's) & Routers. *(also intelligent switches)

Also,

CO + CO = ST RO + RO = ST
CO + ST = CO RO + ST = RO

Hope this helps.


Kudos to "M. Dennis Palmer CCNA,CCAI" for the materials and teaching skills to allow me to explain this to you.

"...understanding "The Why" is half the battle!" - Anonymous.