[WISPA] Ethernet over 328ft
The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- 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 over 328ft
the spec 328 is for 100meg, you can go considerably farther with 10meg, plus I have 440 foot right next to AC power, without issues at 100meg. Quality cable helps, shielded etc. On 5/17/07, Erik Jansson [EMAIL PROTECTED] wrote: The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- Dennis Burgess, MCP, CCNA, A+, N+, Mikrotik Certified Consultant www.mikrotikconsulting.com [EMAIL PROTECTED] -- 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 over 328ft
One thing to remember is that the spec also specifies that two patch cords may be used. A 90Meter Horizontal run, with 3M patch cord from the wall jack to the work area, and a 6M patch cord in the wiring closet. The extra two male plug/female jacks create an insertion loss of about 82ft, assuming top quality connections. This does not include the 110 IDC connectors for the patch panels, those also add significant insertion loss. So, there your close to 400ft, and, to a stretch, it's within the spec. The other is how long it takes the signal to get from one side of the wire to the other. And how many bit times it takes to detect a collision, which needs to happen within 512-bit times. So, just based on the math, you could get away with 672 feet. I've run FastEthernet farther than 100M many times. But, I also had to put in a switch at mid-point on 300ft cable run this week, too. It was an AM-tower though, I don't think it was the distance getting us, but the interference. So, if your on an interference free tower, use good cable, good ends, and good installation techniques and you'll be fine with 400ft. Thanks, -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Erik Jansson Sent: Thursday, May 17, 2007 4:01 PM To: 'WISPA General List' Subject: [WISPA] Ethernet over 328ft The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- 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 over 328ft
the AM towers, the little farite ring or whatever it is, is worth its wait in gold. We are about 300 feet from a AM tower, the power 1000 watts, was enough for us to burn our fingers on the cat5 end without ether end plugged in! And I do mean, you start to smell burning skin, not good! Dennis On 5/17/07, Russ Kreigh [EMAIL PROTECTED] wrote: One thing to remember is that the spec also specifies that two patch cords may be used. A 90Meter Horizontal run, with 3M patch cord from the wall jack to the work area, and a 6M patch cord in the wiring closet. The extra two male plug/female jacks create an insertion loss of about 82ft, assuming top quality connections. This does not include the 110 IDC connectors for the patch panels, those also add significant insertion loss. So, there your close to 400ft, and, to a stretch, it's within the spec. The other is how long it takes the signal to get from one side of the wire to the other. And how many bit times it takes to detect a collision, which needs to happen within 512-bit times. So, just based on the math, you could get away with 672 feet. I've run FastEthernet farther than 100M many times. But, I also had to put in a switch at mid-point on 300ft cable run this week, too. It was an AM-tower though, I don't think it was the distance getting us, but the interference. So, if your on an interference free tower, use good cable, good ends, and good installation techniques and you'll be fine with 400ft. Thanks, -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Erik Jansson Sent: Thursday, May 17, 2007 4:01 PM To: 'WISPA General List' Subject: [WISPA] Ethernet over 328ft The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- 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/ -- Dennis Burgess, MCP, CCNA, A+, N+, Mikrotik Certified Consultant www.mikrotikconsulting.com [EMAIL PROTECTED] -- 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 over 328ft
We've had good luck with ferrite beads elsewhere. Not on this tower. We had a tone/probe cable tester that when you would plug the probe into the ethernet cable going up the tower, you could hear the radio station, on the cable tester speaker. Explain that one to me. -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Burgess Sent: Thursday, May 17, 2007 4:50 PM To: WISPA General List Subject: Re: [WISPA] Ethernet over 328ft the AM towers, the little farite ring or whatever it is, is worth its wait in gold. We are about 300 feet from a AM tower, the power 1000 watts, was enough for us to burn our fingers on the cat5 end without ether end plugged in! And I do mean, you start to smell burning skin, not good! Dennis On 5/17/07, Russ Kreigh [EMAIL PROTECTED] wrote: One thing to remember is that the spec also specifies that two patch cords may be used. A 90Meter Horizontal run, with 3M patch cord from the wall jack to the work area, and a 6M patch cord in the wiring closet. The extra two male plug/female jacks create an insertion loss of about 82ft, assuming top quality connections. This does not include the 110 IDC connectors for the patch panels, those also add significant insertion loss. So, there your close to 400ft, and, to a stretch, it's within the spec. The other is how long it takes the signal to get from one side of the wire to the other. And how many bit times it takes to detect a collision, which needs to happen within 512-bit times. So, just based on the math, you could get away with 672 feet. I've run FastEthernet farther than 100M many times. But, I also had to put in a switch at mid-point on 300ft cable run this week, too. It was an AM-tower though, I don't think it was the distance getting us, but the interference. So, if your on an interference free tower, use good cable, good ends, and good installation techniques and you'll be fine with 400ft. Thanks, -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Erik Jansson Sent: Thursday, May 17, 2007 4:01 PM To: 'WISPA General List' Subject: [WISPA] Ethernet over 328ft The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- 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/ -- Dennis Burgess, MCP, CCNA, A+, N+, Mikrotik Certified Consultant www.mikrotikconsulting.com [EMAIL PROTECTED] -- 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 over 328ft
Stick your tounge on it, see what happens. On 5/17/07, Russ Kreigh [EMAIL PROTECTED] wrote: We've had good luck with ferrite beads elsewhere. Not on this tower. We had a tone/probe cable tester that when you would plug the probe into the ethernet cable going up the tower, you could hear the radio station, on the cable tester speaker. Explain that one to me. -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Burgess Sent: Thursday, May 17, 2007 4:50 PM To: WISPA General List Subject: Re: [WISPA] Ethernet over 328ft the AM towers, the little farite ring or whatever it is, is worth its wait in gold. We are about 300 feet from a AM tower, the power 1000 watts, was enough for us to burn our fingers on the cat5 end without ether end plugged in! And I do mean, you start to smell burning skin, not good! Dennis On 5/17/07, Russ Kreigh [EMAIL PROTECTED] wrote: One thing to remember is that the spec also specifies that two patch cords may be used. A 90Meter Horizontal run, with 3M patch cord from the wall jack to the work area, and a 6M patch cord in the wiring closet. The extra two male plug/female jacks create an insertion loss of about 82ft, assuming top quality connections. This does not include the 110 IDC connectors for the patch panels, those also add significant insertion loss. So, there your close to 400ft, and, to a stretch, it's within the spec. The other is how long it takes the signal to get from one side of the wire to the other. And how many bit times it takes to detect a collision, which needs to happen within 512-bit times. So, just based on the math, you could get away with 672 feet. I've run FastEthernet farther than 100M many times. But, I also had to put in a switch at mid-point on 300ft cable run this week, too. It was an AM-tower though, I don't think it was the distance getting us, but the interference. So, if your on an interference free tower, use good cable, good ends, and good installation techniques and you'll be fine with 400ft. Thanks, -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Erik Jansson Sent: Thursday, May 17, 2007 4:01 PM To: 'WISPA General List' Subject: [WISPA] Ethernet over 328ft The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- 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/ -- Dennis Burgess, MCP, CCNA, A+, N+, Mikrotik Certified Consultant www.mikrotikconsulting.com [EMAIL PROTECTED] -- 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/ -- Dennis Burgess, MCP, CCNA, A+, N+, Mikrotik Certified Consultant www.mikrotikconsulting.com [EMAIL PROTECTED] -- 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 over 328ft
Thanks for the feed back, It is a 340ft tower (no broadcasting!) with about a 15 ft run to the shack, so all tolled I should com in at 375-385 or so with just the arrestors at top and bottom then in to the poe and router. We always use a gell filled copper shielded cable and AMP jacks for tower work like this. The freznel zone is a bit tighter then I like so a few extra feet over the 300ft mark would make be feel much better about the link working as planed you just never can tell how tall those trees on the hill are when they're is 15 miles of bush to the nearest road! Erik Dennis Burgess wrote: Stick your tounge on it, see what happens. On 5/17/07, Russ Kreigh [EMAIL PROTECTED] wrote: We've had good luck with ferrite beads elsewhere. Not on this tower. We had a tone/probe cable tester that when you would plug the probe into the ethernet cable going up the tower, you could hear the radio station, on the cable tester speaker. Explain that one to me. -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Burgess Sent: Thursday, May 17, 2007 4:50 PM To: WISPA General List Subject: Re: [WISPA] Ethernet over 328ft the AM towers, the little farite ring or whatever it is, is worth its wait in gold. We are about 300 feet from a AM tower, the power 1000 watts, was enough for us to burn our fingers on the cat5 end without ether end plugged in! And I do mean, you start to smell burning skin, not good! Dennis On 5/17/07, Russ Kreigh [EMAIL PROTECTED] wrote: One thing to remember is that the spec also specifies that two patch cords may be used. A 90Meter Horizontal run, with 3M patch cord from the wall jack to the work area, and a 6M patch cord in the wiring closet. The extra two male plug/female jacks create an insertion loss of about 82ft, assuming top quality connections. This does not include the 110 IDC connectors for the patch panels, those also add significant insertion loss. So, there your close to 400ft, and, to a stretch, it's within the spec. The other is how long it takes the signal to get from one side of the wire to the other. And how many bit times it takes to detect a collision, which needs to happen within 512-bit times. So, just based on the math, you could get away with 672 feet. I've run FastEthernet farther than 100M many times. But, I also had to put in a switch at mid-point on 300ft cable run this week, too. It was an AM-tower though, I don't think it was the distance getting us, but the interference. So, if your on an interference free tower, use good cable, good ends, and good installation techniques and you'll be fine with 400ft. Thanks, -Russ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Erik Jansson Sent: Thursday, May 17, 2007 4:01 PM To: 'WISPA General List' Subject: [WISPA] Ethernet over 328ft The Ethernet spec is for a maximum cable run of 328ft. What is the the spec limits it to this distance, timing, cable resistance? I need to do an outdoor run of 350-400ft, not real keen on fiber as I then need to power a converter and I have doubts of a converter that will with stand the cold being available. It is a critical cable run. I don't need the full 100mb. Any feed back, ideas, or experience would be great. Erik -- 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/ -- Dennis Burgess, MCP, CCNA, A+, N+, Mikrotik Certified Consultant www.mikrotikconsulting.com [EMAIL PROTECTED] -- 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/
