On Sat, 06 Mar 2004 12:25:47 +1300, you wrote: >I got my crimping tool, rj45 crimp plugs and a flush box at DSE. >I put the flush box at one end of the cable and an rj45 plug at the other end. > >Tested with LAN cable tester (also DSE) and every pin is connected in the >right order. > >Plug the rj45 plug end of the cable into the switch and plug the laptop into >the flush box which is mounted on the kitchen wall. > >Lappie sends DHCP requests but gets no answer. > >All cables are connected correctly according to lan cable tester. > >So why does it not work? > >Could it be that I untwisted too far when poking the wires into the crimp plug >or the flush box? How far is too far? > >What else can anyone think of. First off, are there any new bits of kit in your notwork apart from the cabling and patch panels? Can they be removed? For example, can you bin the switch and plug straight into your router ( or whatever is servicing your DHCP requests... if a server, then you need a xover cable somewhere ), just to see what happens.
The connect lights should light up on the switch port and lan card if they exist. The patch lead is straight through, not xover is it? It's very unlikely that you've untwisted too much of the cable, it's something that I've never managed to do, and I usually screw things up at least once! How clever is the switch? It hasn't got VLANs enabled, has it? You should be ok on cable lengths... IIRC the allowed lengths for Cat 5 is 0.5m to 100m, so unless you've got a _very_ large house! Just to check... The standard connections for ethernet straight through connections are ( both ends )... 1 Green/White 2 Green 3 Orange/White 4 Blue 5 Blue/White 6 Orange 7 Brown/White 8 Brown For xover, one end as above, and the other end... 1 Orange/White 2 Orange 3 Green/White 4 Blue 5 Blue/White 6 Green 7 Brown/White 8 Brown As you can see, only pins 1, 2, 3 and 6 are actually used! hth, Steve > >How is this linux related? Every box on the lan runs linux of course! > > >Yuri >
