Peer-to-Peer Networking (2 machines)Here's some guidelines for connecting one machine to another machine using Ethernet, with no other machines on the network. In this case, you don't need a hub; you just need to connect the wires between the two machines correctly.To connect two machines to each other without a hub, you need a "cross-over" patch cable, which crosses the transmit and receive pairs, the orange and green pairs in normal wiring. One End Cable The Other End TR+ pin 1 -------- pin 3 RCV+ TR- pin 2 -------- pin 6 RCV- RCV+ pin 3 -------- pin 1 TR+ RCV- pin 6 -------- pin 2 TR-  Alternatively, you can connect two wall jacks back-to-back, swapping the orange and green pairs, to make a "two-port hub". Then you can use straight-through patch cords between each of the machine and one of the "hub" jacks. This is used to connect two 10baseT transceivers directly together, as in connecting the transceiver on your Mac to a transceiver on another Mac. I suppose you could connect a Mac to a PC, but why would anyone want to?. :-)
Installing RJ-45 plugs on the ends of a Cat 5 wire or Cat 3 wire for a peer-to-peer, two-computer network using PCI and/or 16-bit network cardsCat 3 wire looks like Cat 5 wire, both with 8 wires (4 pairs) of the standard colors for Cat 5. For the standard Ethernet hookup (Cat 3 or 5 wire), after trimming off the outer casing by the length set by the crimping/trimming tool (about 1/2 inch) and exposing the small wires, clip off the brown-white/brown and blue-white/blue pairs. Inside the RJ-45 plugs the channels for pins 4, 5, 7, and 8 are left empty.WITH THE CLIP SIDE FACING DOWN! (Note: pins 1,2,3, and 6 are the only ones used.) Complete Wiring for Cross-Over cable: On one end The Other end Pin Wire color Pin 1 white/orange 3 2 orange/white 6 3 white/green 1 4 blue/white 4 5 white/blue 5 6 green/white 2 7 white/brown 7 8 brown/white 8 |
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