Re: [WISPA] Ethernet problems
One the end of the cable I pulled through the entire length of the conduit, I don't see anything worse than rubbed off lettering. I have tried different PoE injectors with no difference. I just tried a 48v instead of an 18v and it isn't any better. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Tim Wolfe [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Wednesday, May 30, 2007 8:29 AM Subject: Re: [WISPA] Ethernet problems I was reading this thread, and I had a thought (scary thing!, LOL), it it possible that inside the conduit, there is a rough edge (maybe the edge of a junction box if you are not using LBE's?) that scraped off the outside covering and you now have exposed wires that you can not see?. Perhaps the wires are exposed somewhere and a little bit of moisture (even humidity) got inside the conduit and is causing the errors?. It would really be a long shot, as this rough edge would have to scrape off the shielding from both CAT5 cables, but I have seen stranger things. I have also had problems in the past from bad ballasts in flourescent lights. Even if they are a few feet away, they make all sorts of strange things happen. Another place to look is bad power supplies. I installed a radio at a customers home one time that had a power supply. It made noise thru every computer speaker. As soon as you unplugged the power supply, the noise went away. It also would allow the radio to boot up, but the ethernet was just screwy, sometimes passing packets, sometimes not. Good luck in your search!. Tim Russ Kreigh wrote: What if you plug directly (or as direct as you can) into the Mikrotik CPE with your laptop?? -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
We had an issue before with the first wrap board causing interference on the ethernet run. It was the first release of a wrap board. When we plugged into the ethernet at the bottom of the tower we got terrible packet loss pinging the radio on the other end of the ethernet run at the top of the tower. We replaced the non shielded cable with shielded cable and grounded one end. Problem went away. We Also had a couple Trango ap's and a Proxim ap for quite some time before installing that wrap, all wired with outdoor rated non shielded cat5 cable, without issue. So the issue was with the wrap board and something else on the tower interfering with it. We don't have this issue with war boards or the newer wrap boards. Not sure if this is a clue or not. George Mike Hammett wrote: One the end of the cable I pulled through the entire length of the conduit, I don't see anything worse than rubbed off lettering. I have tried different PoE injectors with no difference. I just tried a 48v instead of an 18v and it isn't any better. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Tim Wolfe [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Wednesday, May 30, 2007 8:29 AM Subject: Re: [WISPA] Ethernet problems I was reading this thread, and I had a thought (scary thing!, LOL), it it possible that inside the conduit, there is a rough edge (maybe the edge of a junction box if you are not using LBE's?) that scraped off the outside covering and you now have exposed wires that you can not see?. Perhaps the wires are exposed somewhere and a little bit of moisture (even humidity) got inside the conduit and is causing the errors?. It would really be a long shot, as this rough edge would have to scrape off the shielding from both CAT5 cables, but I have seen stranger things. I have also had problems in the past from bad ballasts in flourescent lights. Even if they are a few feet away, they make all sorts of strange things happen. Another place to look is bad power supplies. I installed a radio at a customers home one time that had a power supply. It made noise thru every computer speaker. As soon as you unplugged the power supply, the noise went away. It also would allow the radio to boot up, but the ethernet was just screwy, sometimes passing packets, sometimes not. Good luck in your search!. Tim Russ Kreigh wrote: What if you plug directly (or as direct as you can) into the Mikrotik CPE with your laptop?? -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- George Rogato Welcome to WISPA www.wispa.org http://signup.wispa.org/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
I go out today with a 48v PoE injector and 6 Radio Shack ferrite clamps. Swapping to 48v made no difference. Adding a clamp just upstream of the PoE injector made no difference. Adding a clamp just outside of the RooTenna made no difference. Seeing no change, I put it back to the 18v PoE and went home to check if a bridge had become misconfigured or something that would allow the Ethernet to correctly setup at 10 HDX, but no data to pass. I logged in and there the desktop was, starring me in the face from the DHCP leases screen. I could ping it. I called over and they said the Internet worked. My only conclusion is that I needed to power cycle the RB once the ferrite clamps were added. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Mike Hammett [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Tuesday, May 29, 2007 3:10 PM Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
Alan, I was an electrician for just about 30 years. Drywallers with routers in their hands are one the most dangerous things . George Alan Cain wrote: Tim Wolfe wrote: I was reading this thread, and I had a thought (scary thing!, LOL), it it possible that inside the conduit, there is a rough edge (maybe the edge of a junction box if you are not using LBE's?) that scraped off the outside covering and you now have exposed wires that you can not see?. Perhaps the wires are exposed somewhere and a little bit of moisture (even humidity) got inside the conduit and is causing the errors?. It would really be a long shot, as this rough edge would have to scrape off the shielding from both CAT5 cables, but I have seen stranger things. I have also had problems in the past from bad ballasts in flourescent lights. Even if they are a few feet away, they make all sorts of strange things happen. Another place to look is bad power supplies. I installed a radio at a customers home one time that had a power supply. It made noise thru every computer speaker. As soon as you unplugged the power supply, the noise went away. It also would allow the radio to boot up, but the ethernet was just screwy, sometimes passing packets, sometimes not. Good luck in your search!. Tim I just repaired an install done while the walls were open; the drywallers used a motor router to cut the junction box holes and went to a GREAT deal of effort to nick the wires in multiple locations. Sadly, I know these guys. ID10Tz. Oh well. I did not do the repair for free. The idea of frayed wires is a very good one. -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Ethernet problems
What if you plug directly (or as direct as you can) into the Mikrotik CPE with your laptop?? -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
The last time I had problems, it seemed to be okay when I skipped the long cable. I haven't tried that this time around. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Russ Kreigh [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Wednesday, May 30, 2007 7:31 AM Subject: RE: [WISPA] Ethernet problems What if you plug directly (or as direct as you can) into the Mikrotik CPE with your laptop?? -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
I was reading this thread, and I had a thought (scary thing!, LOL), it it possible that inside the conduit, there is a rough edge (maybe the edge of a junction box if you are not using LBE's?) that scraped off the outside covering and you now have exposed wires that you can not see?. Perhaps the wires are exposed somewhere and a little bit of moisture (even humidity) got inside the conduit and is causing the errors?. It would really be a long shot, as this rough edge would have to scrape off the shielding from both CAT5 cables, but I have seen stranger things. I have also had problems in the past from bad ballasts in flourescent lights. Even if they are a few feet away, they make all sorts of strange things happen. Another place to look is bad power supplies. I installed a radio at a customers home one time that had a power supply. It made noise thru every computer speaker. As soon as you unplugged the power supply, the noise went away. It also would allow the radio to boot up, but the ethernet was just screwy, sometimes passing packets, sometimes not. Good luck in your search!. Tim Russ Kreigh wrote: What if you plug directly (or as direct as you can) into the Mikrotik CPE with your laptop?? -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Ethernet problems
Mike, Is there 120v power running parallel to the cable? What else is on this tower? Any high wattage RF transmitters? I have seen shielded cat5 interfered with to the point where we had to use fiber as the transport up the tower instead of cat5. Is the enclosure plastic or metal? Have you tried ferrite beads? Respectfully, Rick Harnish President OnlyInternet Broadband Wireless, Inc. 260-827-2482 Founding Member of WISPA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
The only location where power might be parallel to the cable is in the basement, but all of the power cables there (IIRC) are ran in metal conduit. This unit is the only thing functioning on the tower. There is a TV antenna, but he couldn't get the signal he was wanting, so it isn't hooked up at this time (perhaps an opportunity to figure that out for him). The enclosure is a RooTenna, so a metal back with metal mounting hardware to the metal tower, plastic sides and front. There is an FM tower a mile and a half away, but I have 5 installations closer than this with no problems. I have not tried ferrite beads because I know nothing about them. Not how they work, how to install, where to obtain, how to troubleshoot, etc. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Rick Harnish [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 3:22 PM Subject: RE: [WISPA] Ethernet problems Mike, 5 Is there 120v power running parallel to the cable? What else is on this tower? Any high wattage RF transmitters? I have seen shielded cat5 interfered with to the point where we had to use fiber as the transport up the tower instead of cat5. Is the enclosure plastic or metal? Have you tried ferrite beads? Respectfully, Rick Harnish President OnlyInternet Broadband Wireless, Inc. 260-827-2482 Founding Member of WISPA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:11 PM To: WISPA General List Subject: [WISPA] Ethernet problems I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Ethernet problems
You should be able to find a supplier of ferrite beads on google. They are relatively inexpensive and you may have some in your attic of inventory that you didn't even realize. It sounds like you have eliminated other thoughts I had. What are the bumps at the end of computer cables? In a typical computer system found in a home or office, you normally see these bumps on the mouse http://www.howstuffworks.com/mouse.htm , keyboard http://www.howstuffworks.com/keyboard.htm and monitor http://www.howstuffworks.com/monitor.htm cables. You can also find them on power supply wires when a device (like a printer http://www.howstuffworks.com/inkjet-printer.htm or scanner http://www.howstuffworks.com/scanner.htm ) uses an external transformer. These bumps are called ferrite beads or sometimes ferrite chokes. Their goal in life is to reduce EMI (electromagnetic interference) and RFI (radio-frequency http://www.howstuffworks.com/radio-spectrum.htm interference). You can see these beads in the following photo: A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It slips over the cable when the cable is made, or it can be snapped around the cable in two pieces after the cable is made. The bead is encased in plastic -- if you cut the plastic, all that you would find inside is a black metal cylinder. Computers http://www.howstuffworks.com/pc.htm are fairly noisy devices. The motherboard http://www.howstuffworks.com/motherboard.htm inside the computer's case has an oscillator http://www.howstuffworks.com/oscillator.htm that is running at anywhere from 300 MHz to 1,000 MHz. The keyboard has its own processor and oscillator as well. The video card http://www.howstuffworks.com/graphics-card.htm has its own oscillators to drive the monitor. All of these oscillators have the potential to broadcast radio http://www.howstuffworks.com/radio.htm signals at their given frequencies. Most of this interference can be eliminated by the cases around the motherboard and keyboard. Another source of noise is the cables connecting the devices. These cables act as nice, long antennae for the signals they carry. They broadcast the signals quite efficiently. The signals they broadcast can interfere with radios and TVs http://www.howstuffworks.com/tv.htm . The cables can also receive signals and transmit them into the case, where they cause problems. A ferrite bead has the property of eliminating the broadcast signals. Essentially, it chokes the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. Instead of traveling down the cable and transmitting, the RFI signals turn into heat in the bead. These links will help you learn more: * Using http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.antennex.com/shack/Dec99/beads.htm Ferrite Beads * Dealing http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.repairfaq.org/REPAIR/F_comprfi.html with Computer generated RFI/EMI * EMI http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.steward.com/techinfo/subsystems.html Control Applications Notes * How http://www.howstuffworks.com/radio.htm Radio Works * How Oscillators Work http://www.howstuffworks.com/oscillator.htm Respectfully, Rick Harnish President OnlyInternet Broadband Wireless, Inc. 260-827-2482 Founding Member of WISPA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:37 PM To: WISPA General List Subject: Re: [WISPA] Ethernet problems The only location where power might be parallel to the cable is in the basement, but all of the power cables there (IIRC) are ran in metal conduit. This unit is the only thing functioning on the tower. There is a TV antenna, but he couldn't get the signal he was wanting, so it isn't hooked up at this time (perhaps an opportunity to figure that out for him). The enclosure is a RooTenna, so a metal back with metal mounting hardware to the metal tower, plastic sides and front. There is an FM tower a mile and a half away, but I have 5 installations closer than this with no problems. I have not tried ferrite beads because I know nothing about them. Not how they work, how to install, where to obtain, how to troubleshoot, etc. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Rick Harnish [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 3:22 PM Subject: RE: [WISPA] Ethernet problems Mike, 5 Is there 120v power running parallel to the cable? What else is on this tower? Any high wattage RF transmitters? I have seen shielded cat5 interfered
RE: [WISPA] Ethernet problems
...when I'm in a hurry, Radio Shack always has had them right down on the corner for $5...A two-piece, snap-on ferrite choke that really works well. Snap-Together Ferrite Choke Core $5.29 Model: Snap-together ferrite Choke Core Catalog #: 273-105 It's worth a try and easy to pick up. . . . j o n a t h a n -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rick Harnish Sent: Tuesday, May 29, 2007 3:49 PM To: 'WISPA General List' Subject: RE: [WISPA] Ethernet problems You should be able to find a supplier of ferrite beads on google. They are relatively inexpensive and you may have some in your attic of inventory that you didn't even realize. It sounds like you have eliminated other thoughts I had. What are the bumps at the end of computer cables? In a typical computer system found in a home or office, you normally see these bumps on the mouse http://www.howstuffworks.com/mouse.htm , keyboard http://www.howstuffworks.com/keyboard.htm and monitor http://www.howstuffworks.com/monitor.htm cables. You can also find them on power supply wires when a device (like a printer http://www.howstuffworks.com/inkjet-printer.htm or scanner http://www.howstuffworks.com/scanner.htm ) uses an external transformer. These bumps are called ferrite beads or sometimes ferrite chokes. Their goal in life is to reduce EMI (electromagnetic interference) and RFI (radio-frequency http://www.howstuffworks.com/radio-spectrum.htm interference). You can see these beads in the following photo: A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It slips over the cable when the cable is made, or it can be snapped around the cable in two pieces after the cable is made. The bead is encased in plastic -- if you cut the plastic, all that you would find inside is a black metal cylinder. Computers http://www.howstuffworks.com/pc.htm are fairly noisy devices. The motherboard http://www.howstuffworks.com/motherboard.htm inside the computer's case has an oscillator http://www.howstuffworks.com/oscillator.htm that is running at anywhere from 300 MHz to 1,000 MHz. The keyboard has its own processor and oscillator as well. The video card http://www.howstuffworks.com/graphics-card.htm has its own oscillators to drive the monitor. All of these oscillators have the potential to broadcast radio http://www.howstuffworks.com/radio.htm signals at their given frequencies. Most of this interference can be eliminated by the cases around the motherboard and keyboard. Another source of noise is the cables connecting the devices. These cables act as nice, long antennae for the signals they carry. They broadcast the signals quite efficiently. The signals they broadcast can interfere with radios and TVs http://www.howstuffworks.com/tv.htm . The cables can also receive signals and transmit them into the case, where they cause problems. A ferrite bead has the property of eliminating the broadcast signals. Essentially, it chokes the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. Instead of traveling down the cable and transmitting, the RFI signals turn into heat in the bead. These links will help you learn more: * Using http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.antennex.com/shack/Dec99/beads.htm Ferrite Beads * Dealing http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.repairfaq.org/REPAIR/F_comprfi.html with Computer generated RFI/EMI * EMI http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.steward.com/techinfo/subsystems.html Control Applications Notes * How http://www.howstuffworks.com/radio.htm Radio Works * How Oscillators Work http://www.howstuffworks.com/oscillator.htm Respectfully, Rick Harnish President OnlyInternet Broadband Wireless, Inc. 260-827-2482 Founding Member of WISPA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:37 PM To: WISPA General List Subject: Re: [WISPA] Ethernet problems The only location where power might be parallel to the cable is in the basement, but all of the power cables there (IIRC) are ran in metal conduit. This unit is the only thing functioning on the tower. There is a TV antenna, but he couldn't get the signal he was wanting, so it isn't hooked up at this time (perhaps an opportunity to figure that out for him). The enclosure is a RooTenna, so a metal back with metal mounting hardware to the metal tower, plastic sides and front. There is an FM tower a mile and a half away, but I have 5 installations closer than this with no problems. I have not tried ferrite beads because I know nothing about them. Not how they work, how
Re: [WISPA] Ethernet problems
I wondered how it discerns good RF from bad RF, but this Nortel document indicates how to install one on an Ethernet cable. http://www142.nortelnetworks.com/techdocs/RG91_52/pdf/N0027496_1.1.pdf Not sure how I'm going to loop this stiff cable tightly around one of these beads, but I'll try. Should I put it on both ends of the cable, just one, etc.? - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Rick Harnish [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 3:48 PM Subject: RE: [WISPA] Ethernet problems You should be able to find a supplier of ferrite beads on google. They are relatively inexpensive and you may have some in your attic of inventory that you didn't even realize. It sounds like you have eliminated other thoughts I had. What are the bumps at the end of computer cables? In a typical computer system found in a home or office, you normally see these bumps on the mouse http://www.howstuffworks.com/mouse.htm , keyboard http://www.howstuffworks.com/keyboard.htm and monitor http://www.howstuffworks.com/monitor.htm cables. You can also find them on power supply wires when a device (like a printer http://www.howstuffworks.com/inkjet-printer.htm or scanner http://www.howstuffworks.com/scanner.htm ) uses an external transformer. These bumps are called ferrite beads or sometimes ferrite chokes. Their goal in life is to reduce EMI (electromagnetic interference) and RFI (radio-frequency http://www.howstuffworks.com/radio-spectrum.htm interference). You can see these beads in the following photo: A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It slips over the cable when the cable is made, or it can be snapped around the cable in two pieces after the cable is made. The bead is encased in plastic -- if you cut the plastic, all that you would find inside is a black metal cylinder. Computers http://www.howstuffworks.com/pc.htm are fairly noisy devices. The motherboard http://www.howstuffworks.com/motherboard.htm inside the computer's case has an oscillator http://www.howstuffworks.com/oscillator.htm that is running at anywhere from 300 MHz to 1,000 MHz. The keyboard has its own processor and oscillator as well. The video card http://www.howstuffworks.com/graphics-card.htm has its own oscillators to drive the monitor. All of these oscillators have the potential to broadcast radio http://www.howstuffworks.com/radio.htm signals at their given frequencies. Most of this interference can be eliminated by the cases around the motherboard and keyboard. Another source of noise is the cables connecting the devices. These cables act as nice, long antennae for the signals they carry. They broadcast the signals quite efficiently. The signals they broadcast can interfere with radios and TVs http://www.howstuffworks.com/tv.htm . The cables can also receive signals and transmit them into the case, where they cause problems. A ferrite bead has the property of eliminating the broadcast signals. Essentially, it chokes the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. Instead of traveling down the cable and transmitting, the RFI signals turn into heat in the bead. These links will help you learn more: * Using http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.antennex.com/shack/Dec99/beads.htm Ferrite Beads * Dealing http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.repairfaq.org/REPAIR/F_comprfi.html with Computer generated RFI/EMI * EMI http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.steward.com/techinfo/subsystems.html Control Applications Notes * How http://www.howstuffworks.com/radio.htm Radio Works * How Oscillators Work http://www.howstuffworks.com/oscillator.htm Respectfully, Rick Harnish President OnlyInternet Broadband Wireless, Inc. 260-827-2482 Founding Member of WISPA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:37 PM To: WISPA General List Subject: Re: [WISPA] Ethernet problems The only location where power might be parallel to the cable is in the basement, but all of the power cables there (IIRC) are ran in metal conduit. This unit is the only thing functioning on the tower. There is a TV antenna, but he couldn't get the signal he was wanting, so it isn't hooked up at this time (perhaps an opportunity to figure that out for him). The enclosure is a RooTenna, so a metal back with metal mounting hardware to the metal tower, plastic sides and front. There is an FM tower a mile and a half away, but I have 5 installations closer than this with no problems. I have not tried ferrite
RE: [WISPA] Ethernet problems
Mike, the ferrite snap-on is an inductance that prevents common mode RF, of any frequency you care about, from waltzing down the wire into your system. You just snap the hinged double-half-core onto the cable over the insulation so the cable goes straight through it...no looping or other contortions...just snap it on. As I replied earlier, you can get a couple from Radio Shack cheap and immediately to try it. Yes, put one at both ends, as close to the RJ45 as you can get comfortably. It has no effect on the normal signal modes within the CAT5E And, be sure to tell us what difference, if any, it made. Thanks, . . . j o n a t h a n -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:23 PM To: WISPA General List Subject: Re: [WISPA] Ethernet problems I wondered how it discerns good RF from bad RF, but this Nortel document indicates how to install one on an Ethernet cable. http://www142.nortelnetworks.com/techdocs/RG91_52/pdf/N0027496_1.1.pdf Not sure how I'm going to loop this stiff cable tightly around one of these beads, but I'll try. Should I put it on both ends of the cable, just one, etc.? - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Rick Harnish [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 3:48 PM Subject: RE: [WISPA] Ethernet problems You should be able to find a supplier of ferrite beads on google. They are relatively inexpensive and you may have some in your attic of inventory that you didn't even realize. It sounds like you have eliminated other thoughts I had. What are the bumps at the end of computer cables? In a typical computer system found in a home or office, you normally see these bumps on the mouse http://www.howstuffworks.com/mouse.htm , keyboard http://www.howstuffworks.com/keyboard.htm and monitor http://www.howstuffworks.com/monitor.htm cables. You can also find them on power supply wires when a device (like a printer http://www.howstuffworks.com/inkjet-printer.htm or scanner http://www.howstuffworks.com/scanner.htm ) uses an external transformer. These bumps are called ferrite beads or sometimes ferrite chokes. Their goal in life is to reduce EMI (electromagnetic interference) and RFI (radio-frequency http://www.howstuffworks.com/radio-spectrum.htm interference). You can see these beads in the following photo: A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It slips over the cable when the cable is made, or it can be snapped around the cable in two pieces after the cable is made. The bead is encased in plastic -- if you cut the plastic, all that you would find inside is a black metal cylinder. Computers http://www.howstuffworks.com/pc.htm are fairly noisy devices. The motherboard http://www.howstuffworks.com/motherboard.htm inside the computer's case has an oscillator http://www.howstuffworks.com/oscillator.htm that is running at anywhere from 300 MHz to 1,000 MHz. The keyboard has its own processor and oscillator as well. The video card http://www.howstuffworks.com/graphics-card.htm has its own oscillators to drive the monitor. All of these oscillators have the potential to broadcast radio http://www.howstuffworks.com/radio.htm signals at their given frequencies. Most of this interference can be eliminated by the cases around the motherboard and keyboard. Another source of noise is the cables connecting the devices. These cables act as nice, long antennae for the signals they carry. They broadcast the signals quite efficiently. The signals they broadcast can interfere with radios and TVs http://www.howstuffworks.com/tv.htm . The cables can also receive signals and transmit them into the case, where they cause problems. A ferrite bead has the property of eliminating the broadcast signals. Essentially, it chokes the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. Instead of traveling down the cable and transmitting, the RFI signals turn into heat in the bead. These links will help you learn more: * Using http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.antennex.com/shack/Dec99/beads.htm Ferrite Beads * Dealing http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.repairfaq.org/REPAIR/F_comprfi.html with Computer generated RFI/EMI * EMI http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.steward.com/techinfo/subsystems.html Control Applications Notes * How http://www.howstuffworks.com/radio.htm Radio Works * How Oscillators Work http://www.howstuffworks.com/oscillator.htm Respectfully, Rick Harnish President OnlyInternet
Re: [WISPA] Ethernet problems
Thanks much, will do. My RatShack has 6 in stock, so I'll probably buy them all. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Jonathan Schmidt [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 5:54 PM Subject: RE: [WISPA] Ethernet problems Mike, the ferrite snap-on is an inductance that prevents common mode RF, of any frequency you care about, from waltzing down the wire into your system. You just snap the hinged double-half-core onto the cable over the insulation so the cable goes straight through it...no looping or other contortions...just snap it on. As I replied earlier, you can get a couple from Radio Shack cheap and immediately to try it. Yes, put one at both ends, as close to the RJ45 as you can get comfortably. It has no effect on the normal signal modes within the CAT5E And, be sure to tell us what difference, if any, it made. Thanks, . . . j o n a t h a n -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:23 PM To: WISPA General List Subject: Re: [WISPA] Ethernet problems I wondered how it discerns good RF from bad RF, but this Nortel document indicates how to install one on an Ethernet cable. http://www142.nortelnetworks.com/techdocs/RG91_52/pdf/N0027496_1.1.pdf Not sure how I'm going to loop this stiff cable tightly around one of these beads, but I'll try. Should I put it on both ends of the cable, just one, etc.? - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Rick Harnish [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 3:48 PM Subject: RE: [WISPA] Ethernet problems You should be able to find a supplier of ferrite beads on google. They are relatively inexpensive and you may have some in your attic of inventory that you didn't even realize. It sounds like you have eliminated other thoughts I had. What are the bumps at the end of computer cables? In a typical computer system found in a home or office, you normally see these bumps on the mouse http://www.howstuffworks.com/mouse.htm , keyboard http://www.howstuffworks.com/keyboard.htm and monitor http://www.howstuffworks.com/monitor.htm cables. You can also find them on power supply wires when a device (like a printer http://www.howstuffworks.com/inkjet-printer.htm or scanner http://www.howstuffworks.com/scanner.htm ) uses an external transformer. These bumps are called ferrite beads or sometimes ferrite chokes. Their goal in life is to reduce EMI (electromagnetic interference) and RFI (radio-frequency http://www.howstuffworks.com/radio-spectrum.htm interference). You can see these beads in the following photo: A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It slips over the cable when the cable is made, or it can be snapped around the cable in two pieces after the cable is made. The bead is encased in plastic -- if you cut the plastic, all that you would find inside is a black metal cylinder. Computers http://www.howstuffworks.com/pc.htm are fairly noisy devices. The motherboard http://www.howstuffworks.com/motherboard.htm inside the computer's case has an oscillator http://www.howstuffworks.com/oscillator.htm that is running at anywhere from 300 MHz to 1,000 MHz. The keyboard has its own processor and oscillator as well. The video card http://www.howstuffworks.com/graphics-card.htm has its own oscillators to drive the monitor. All of these oscillators have the potential to broadcast radio http://www.howstuffworks.com/radio.htm signals at their given frequencies. Most of this interference can be eliminated by the cases around the motherboard and keyboard. Another source of noise is the cables connecting the devices. These cables act as nice, long antennae for the signals they carry. They broadcast the signals quite efficiently. The signals they broadcast can interfere with radios and TVs http://www.howstuffworks.com/tv.htm . The cables can also receive signals and transmit them into the case, where they cause problems. A ferrite bead has the property of eliminating the broadcast signals. Essentially, it chokes the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. Instead of traveling down the cable and transmitting, the RFI signals turn into heat in the bead. These links will help you learn more: * Using http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.antennex.com/shack/Dec99/beads.htm Ferrite Beads * Dealing http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.repairfaq.org/REPAIR/F_comprfi.html with Computer generated RFI/EMI * EMI http://www.howstuffworks.com
Re: [WISPA] Ethernet problems
Can you define Ethernet problem a little more. No link lights, intermittent link, no data, small packet data only, intermittent data? My first thought is bad connector or bad port on a device. I have seen hub ports that will look fine, do small packets fine, but don't try to move a lot of data. The port would just die, or jabber. Replaced the module in the hub and all was well. I would assume the same can happen with computers, SBC, switches, etc. Mike Hammett wrote: I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- Scott Reed Owner NewWays Wireless Networking Network Design, Installation and Administration www.nwwnet.net -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
Links up, but nothing passes, not even DHCP. Mikrotik's neighbor viewer (which is supposed to work even in the absence of IP) can't see it. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com - Original Message - From: Scott Reed [EMAIL PROTECTED] To: WISPA General List wireless@wispa.org Sent: Tuesday, May 29, 2007 7:15 PM Subject: Re: [WISPA] Ethernet problems Can you define Ethernet problem a little more. No link lights, intermittent link, no data, small packet data only, intermittent data? My first thought is bad connector or bad port on a device. I have seen hub ports that will look fine, do small packets fine, but don't try to move a lot of data. The port would just die, or jabber. Replaced the module in the hub and all was well. I would assume the same can happen with computers, SBC, switches, etc. Mike Hammett wrote: I installed a customer in October and started having Ethernet problems in March. I have an approximately 200' Ethernet run from the top of a TV tower, to the house, and through the basement. I installed a Belden? outdoor Cat5E cable, a Mohawk outdoor gel cable, a rope for future cable additions, and an RG6 quad shield TV cable in a conduit. Numerous times I cut off slack on both ends of the original cable (the Belden). All that fixed the problem was turning off auto negotiation and setting it to 100 HDX. A few weeks later the problems returned, and I set it to 10 HDX. Now, maybe 6 weeks later the problem is back. I switched to the Mohawk cable. I put on a different PoE injector and a different ECS cable (PacWireless cable that provides an Ethernet jack on the outside of the enclosure and has a 1' pigtail that plugs into the Mikrotik board. Problem remains. The Mikrotik is getting power as it associates with my tower and the two clients off an AP installed on the same board work just fine. I tried different patch cables from the injectors to the laptop\desktop. I really don't want to pull 200' of cable only to have it not work again. Does anyone have a good Ethernet tester I can borrow\rent? Not one that just says if the pins make it (I had one of those and it said the cable was fine), but one that is a bit more advanced. From my understanding, these are $800 - $5k units. Someone close to Northern Illinois would be best. I'm out of ideas. - Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -- Scott Reed Owner NewWays Wireless Networking Network Design, Installation and Administration www.nwwnet.net -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Ethernet problems
I have a few beads here. $8 each as I recall. Supposed to wrap the cat 5 through them twice (more if it'll fit). Mary could find out where we got them if anyone's desperate. Finding the ones that'll work for cat5 was a pain. I've NOT used these ones yet so they could be the wrong thing too ;-/ Marlon (509) 982-2181 (408) 907-6910 (Vonage)Consulting services 42846865 (icq)WISP Operator since 1999! [EMAIL PROTECTED] www.odessaoffice.com/wireless www.odessaoffice.com/marlon/cam - Original Message - From: Rick Harnish [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, May 29, 2007 1:48 PM Subject: RE: [WISPA] Ethernet problems You should be able to find a supplier of ferrite beads on google. They are relatively inexpensive and you may have some in your attic of inventory that you didn't even realize. It sounds like you have eliminated other thoughts I had. What are the bumps at the end of computer cables? In a typical computer system found in a home or office, you normally see these bumps on the mouse http://www.howstuffworks.com/mouse.htm , keyboard http://www.howstuffworks.com/keyboard.htm and monitor http://www.howstuffworks.com/monitor.htm cables. You can also find them on power supply wires when a device (like a printer http://www.howstuffworks.com/inkjet-printer.htm or scanner http://www.howstuffworks.com/scanner.htm ) uses an external transformer. These bumps are called ferrite beads or sometimes ferrite chokes. Their goal in life is to reduce EMI (electromagnetic interference) and RFI (radio-frequency http://www.howstuffworks.com/radio-spectrum.htm interference). You can see these beads in the following photo: A ferrite bead is simply a hollow bead or cylinder made of ferrite, which is a semi-magnetic substance made from iron oxide (rust) alloyed with other metals. It slips over the cable when the cable is made, or it can be snapped around the cable in two pieces after the cable is made. The bead is encased in plastic -- if you cut the plastic, all that you would find inside is a black metal cylinder. Computers http://www.howstuffworks.com/pc.htm are fairly noisy devices. The motherboard http://www.howstuffworks.com/motherboard.htm inside the computer's case has an oscillator http://www.howstuffworks.com/oscillator.htm that is running at anywhere from 300 MHz to 1,000 MHz. The keyboard has its own processor and oscillator as well. The video card http://www.howstuffworks.com/graphics-card.htm has its own oscillators to drive the monitor. All of these oscillators have the potential to broadcast radio http://www.howstuffworks.com/radio.htm signals at their given frequencies. Most of this interference can be eliminated by the cases around the motherboard and keyboard. Another source of noise is the cables connecting the devices. These cables act as nice, long antennae for the signals they carry. They broadcast the signals quite efficiently. The signals they broadcast can interfere with radios and TVs http://www.howstuffworks.com/tv.htm . The cables can also receive signals and transmit them into the case, where they cause problems. A ferrite bead has the property of eliminating the broadcast signals. Essentially, it chokes the RFI transmission at that point on the cable -- this is why you find the beads at the ends of the cables. Instead of traveling down the cable and transmitting, the RFI signals turn into heat in the bead. These links will help you learn more: * Using http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.antennex.com/shack/Dec99/beads.htm Ferrite Beads * Dealing http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.repairfaq.org/REPAIR/F_comprfi.html with Computer generated RFI/EMI * EMI http://www.howstuffworks.com/framed.htm?parent=question352.htmurl=http://w ww.steward.com/techinfo/subsystems.html Control Applications Notes * How http://www.howstuffworks.com/radio.htm Radio Works * How Oscillators Work http://www.howstuffworks.com/oscillator.htm Respectfully, Rick Harnish President OnlyInternet Broadband Wireless, Inc. 260-827-2482 Founding Member of WISPA -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Hammett Sent: Tuesday, May 29, 2007 4:37 PM To: WISPA General List Subject: Re: [WISPA] Ethernet problems The only location where power might be parallel to the cable is in the basement, but all of the power cables there (IIRC) are ran in metal conduit. This unit is the only thing functioning on the tower. There is a TV antenna, but he couldn't get the signal he was wanting, so it isn't hooked up at this time (perhaps an opportunity to figure that out for him). The enclosure is a RooTenna, so a metal back with metal mounting hardware to the metal tower, plastic sides and front. There is an FM tower a mile
