RJ45 Aggravation
I don't know if this counts as off topic or not. I just wasted 2 hours and a package of RJ45 ethernet wall plugs. I couldn't get any of them to work. The existing network used to work, but when I tried these wall plugs I could never get more than three of the four pairs to work. I have a decent punch down tool and a little circuit tester which when you plug in the new cable it sequentially tests each pair. It did work before, but now its fixed so it doesn't work. I wanted to make it look nice. Now it doesn't work or look nice. Any ideas. Mark Murphy -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: RJ45 Aggravation
On 12/12/2010 6:06 PM, smac0031 wrote: I couldn't get any of them to work. The existing network used to work, but when I tried these wall plugs I could never get more than three of the four pairs to work. I have a decent punch down tool and a little circuit tester which when you plug in the new cable it sequentially tests each pair. It did work before, but now its fixed so it doesn't work. I wanted to make it look nice. Now it doesn't work or look nice. Any ideas. Hi Mark: which scheme were you using, 568 A or B? If you wired up the network plug using 568A and the cables are B (most common I have seen. Please don't ask why. I don't know and don't care), it will not work. You need to use the same scheme cables as the wall plugs. There are a number of sites on the web which can show you the proper color sequence for each scheme. One is here: http://www.clohwireless.com/index_files/ethernet.htm Peace, Dennis -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: RJ45 Aggravation
On Dec 12, 2010, at 4:27 PM, Dennis Myhand wrote: On 12/12/2010 6:06 PM, smac0031 wrote: I couldn't get any of them to work. The existing network used to work, but when I tried these wall plugs I could never get more than three of the four pairs to work. I have a decent punch down tool and a little circuit tester which when you plug in the new cable it sequentially tests each pair. It did work before, but now its fixed so it doesn't work. I wanted to make it look nice. Now it doesn't work or look nice. Any ideas. Hi Mark: which scheme were you using, 568 A or B? If you wired up the network plug using 568A and the cables are B (most common I have seen. Please don't ask why. I don't know and don't care), it will not work. You need to use the same scheme cables as the wall plugs. There are a number of sites on the web which can show you the proper color sequence for each scheme. One is here: With 568 A vs B it only matters that the end of each cable is the same. You can use 568A wall wiring and 568B patch cables with no problem. The difference is in which color wire pair goes to which pins on the connector. You could use any pair, as long as you use the same pair at both ends of the cable. But 568 A vs B is a good thing to check for. The first time I worked on networking at a commercial building it had just been rewired and all the outlets were wired B and the patch panels were wired A. Who ever did it just went with the color guides on the respective sockets and one was B and one was A. Most equipment I see now is marked for both so you just have to pick one and stick with it. Clark Martin Redwood City, CA, USA Macintosh / Internet Consulting I'm a designated driver on the Information Super Highway -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
