Crossed cables are used to connect PCs to one other PC or to connect a HUB to a HUB. Crossed cables are sometimes called Crossover, Patch or Jumper cables. If your connection is PC to HUB you MUST use a Straight cable.
The following description shows the wiring at both ends (male RJ45 connectors) of the crossed cable.
| One end RJ45 Male | Other end RJ45 Male |
| 1 | 3 |
| 2 | 6 |
| 3 | 1 |
| 4 * | 5 * |
| 5 * | 4 * |
| 6 | 2 |
| 7 * | 8 * |
| 8 * | 7 * |
NOTES:
- Items marked * are not necessary for 10M LANs but since you will be moving shortly to 100MB LANs (won't you) you will save yourself a LOT OF TIME finding crappy cable (that you made) that does not work. Instead we suggest you wire to 100BaseT standards.
- We use RED for crossed cables (or more commonly now a red heat-shrink collar at each end).
- All our crossed wiring is done to the 100base-T4 spec which you can use with 10baseT networks - but NOT always the other way around.
No comments:
Post a Comment