Re: [WISPA] Ethernet LEDs
We hadn't really planned on it, because the cost is a bit high for what it does. We just have the boards printed and attach components ourselves. Total cost of each board is roughly $150 when it is all said and done, mostly because everything is small quantity. We use them on every tower though. With one of these paired with a 493AH, I can power a tower with six sectors and two backhaul links from a single point on the tower top. I use a single 350W 24 or 48 v power supply at the bottom with a single run of cat-5 up the tower. Hit me off list and I'll send some pics if you want. Presently we are redesigning the board layout to have top facing ethernet ports (they were side facing before and it makes it difficult to get the connectors in and out if your box is small and the things are close) and that is why I was asking about the leds. I thought since I'm redesigning the board, I might try to make it capable of power cycling too, but looks like this may get a little to time consuming and beyond my current knowledge level. Cameron n 3/11/2010 11:45 PM, Scottie Arnett wrote: > Are you going to sell these? I have been looking for something like this to > do repeater sites with. > > Scottie > > -- Original Message -- > From: Cameron Crum > Reply-To: WISPA General List > Date: Thu, 11 Mar 2010 15:53:17 -0600 > > >> That is the answer I was looking for. We have these multi-poe boards we >> designed and had a bunch manufactured ... just passive devices that take >> an input voltage and spread it across 9 ethernet ports with two of the >> ports switchable between the input voltage and 12V. The signal side of >> the ethernet ports go to mirrored ports on the other side of the board >> to plug into a switch/router. I was thinking that if there was an easy >> way to sense the connection, I could throw in an XOR chip and a few >> small relays to make a cheap remote power cycle per port by simply >> disabling the port on the switch or router on the signal side of the >> board. Since the switch chip is involved, it becomes a much more complex >> and expensive part. >> >> Cameron >> >> >> On 3/11/2010 2:38 PM, Lawrence E. Bakst wrote: >> >>> The link LED and all other LEDs for Ethernet Jacks/Connections are driven >>> by the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. >>> >>> Link is turned on by the PHY sensing the LIT (link integrity test) in >>> 10BaseT which I believe has become part of the auto-negotiation protocol >>> in later standards. This is part of the Layer-1 (Physical Later) protocol >>> in the spec. >>> http://en.wikipedia.org/wiki/Autonegotiation >>> >>> So to be clear it's not just a LED hooked up to one of the wire via a >>> resister or some analog hack like that. The PHY knows that their is another >>> PHY on the other side of the cable and if the PHY sees the other PHY it >>> turns on the LINK light. PHYs often provide other lines to show collision, >>> speed, and duplex and these can be tied into other individual LEDS or >>> bi-color LEDs. >>> >>> If the link lights are on at both ends the connection is good. It still >>> might be the case that a duplex mismatch or bad auto-speed negotiation >>> could cause problems. Both of these problems show up from time to time, >>> especially on older gear. For both cases the cure is often to fix the speed >>> or duplex on one side and that prevents the auto-negotiation from failing. >>> >>> One cause of not getting a link light is that a MDI/MDI-X mismatch. Most >>> newer chips have auto MDI/MDI-X which prevents the problem in most cases. >>> >>> leb >>> >>> At 12:52 PM -0500 3/11/10, Robert West wrote: >>> >>> >>>> Yeah, but which circuit? The transmit, receive or maybe the unused pairs? >>>> >>>> That got me wondering also. >>>> >>>> Anyone know what pair triggers the light??? >>>> >>>> Bob- >>>> >>>> >>>> -Original Message- >>>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>>> Behalf Of Justin Wilson >>>> Sent: Thursday, March 11, 2010 12:15 PM >>>> To: WISPA General List >>>> Subject: Re: [WISPA] Ethernet LEDs >>>> >>>> Simple terms it's the completion of a circuit. >>>> >>>> --- >>>> Justin Wilson >>>> >>>> On Mar 11, 2010, a
Re: [WISPA] Ethernet LEDs
Are you going to sell these? I have been looking for something like this to do repeater sites with. Scottie -- Original Message -- From: Cameron Crum Reply-To: WISPA General List Date: Thu, 11 Mar 2010 15:53:17 -0600 >That is the answer I was looking for. We have these multi-poe boards we >designed and had a bunch manufactured ... just passive devices that take >an input voltage and spread it across 9 ethernet ports with two of the >ports switchable between the input voltage and 12V. The signal side of >the ethernet ports go to mirrored ports on the other side of the board >to plug into a switch/router. I was thinking that if there was an easy >way to sense the connection, I could throw in an XOR chip and a few >small relays to make a cheap remote power cycle per port by simply >disabling the port on the switch or router on the signal side of the >board. Since the switch chip is involved, it becomes a much more complex >and expensive part. > >Cameron > > >On 3/11/2010 2:38 PM, Lawrence E. Bakst wrote: >> The link LED and all other LEDs for Ethernet Jacks/Connections are driven by >> the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. >> >> Link is turned on by the PHY sensing the LIT (link integrity test) in >> 10BaseT which I believe has become part of the auto-negotiation protocol in >> later standards. This is part of the Layer-1 (Physical Later) protocol in >> the spec. >> http://en.wikipedia.org/wiki/Autonegotiation >> >> So to be clear it's not just a LED hooked up to one of the wire via a >> resister or some analog hack like that. The PHY knows that their is another >> PHY on the other side of the cable and if the PHY sees the other PHY it >> turns on the LINK light. PHYs often provide other lines to show collision, >> speed, and duplex and these can be tied into other individual LEDS or >> bi-color LEDs. >> >> If the link lights are on at both ends the connection is good. It still >> might be the case that a duplex mismatch or bad auto-speed negotiation could >> cause problems. Both of these problems show up from time to time, especially >> on older gear. For both cases the cure is often to fix the speed or duplex >> on one side and that prevents the auto-negotiation from failing. >> >> One cause of not getting a link light is that a MDI/MDI-X mismatch. Most >> newer chips have auto MDI/MDI-X which prevents the problem in most cases. >> >> leb >> >> At 12:52 PM -0500 3/11/10, Robert West wrote: >> >>> Yeah, but which circuit? The transmit, receive or maybe the unused pairs? >>> >>> That got me wondering also. >>> >>> Anyone know what pair triggers the light??? >>> >>> Bob- >>> >>> >>> -Original Message- >>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>> Behalf Of Justin Wilson >>> Sent: Thursday, March 11, 2010 12:15 PM >>> To: WISPA General List >>> Subject: Re: [WISPA] Ethernet LEDs >>> >>> Simple terms it's the completion of a circuit. >>> >>> --- >>> Justin Wilson >>> >>> On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: >>> >>> >>>> This may be a little out there, but does anyone know what causes the >>>> "link" light to show on an ethernet jack when the cable is plugged in? >>>> Is it as simple as just attaching an led to one of the signal wires, >>>> or >>>> is there some logic in there. Just curious. >>>> >>>> >>>> --- >>>> --- >>>> --- >>>> --- >>>> >>>> WISPA Wants You! Join today! >>>> 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/ >>>> >>> >>> >>> >>> WISPA Wants You! Join today! >>> http://signup.wispa.org/ >>> --
Re: [WISPA] Ethernet LEDs
And Bob, for your pressing for the answer, I'll honor you by taking out the trash tonight :) On Thu, Mar 11, 2010 at 3:51 PM, Robert West wrote: > This is why I love this list. > > Lawrence, you are the "Dude of the day". > > In my home we shall honor you this evening as we dine and argue about my > uselessness. Useless yes, but now I posses knowledge that they do not and > that, my friend - thanks to you - will make all the difference. > > My hat is off to you. If I wore one, that is... > > Bob- > > > > -Original Message- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Lawrence E. Bakst > Sent: Thursday, March 11, 2010 3:38 PM > To: WISPA General List > Subject: Re: [WISPA] Ethernet LEDs > > The link LED and all other LEDs for Ethernet Jacks/Connections are driven by > the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. > > Link is turned on by the PHY sensing the LIT (link integrity test) in > 10BaseT which I believe has become part of the auto-negotiation protocol in > later standards. This is part of the Layer-1 (Physical Later) protocol in > the spec. > http://en.wikipedia.org/wiki/Autonegotiation > > So to be clear it's not just a LED hooked up to one of the wire via a > resister or some analog hack like that. The PHY knows that their is another > PHY on the other side of the cable and if the PHY sees the other PHY it > turns on the LINK light. PHYs often provide other lines to show collision, > speed, and duplex and these can be tied into other individual LEDS or > bi-color LEDs. > > If the link lights are on at both ends the connection is good. It still > might be the case that a duplex mismatch or bad auto-speed negotiation could > cause problems. Both of these problems show up from time to time, especially > on older gear. For both cases the cure is often to fix the speed or duplex > on one side and that prevents the auto-negotiation from failing. > > One cause of not getting a link light is that a MDI/MDI-X mismatch. Most > newer chips have auto MDI/MDI-X which prevents the problem in most cases. > > leb > > At 12:52 PM -0500 3/11/10, Robert West wrote: >>Yeah, but which circuit? The transmit, receive or maybe the unused pairs? >> >>That got me wondering also. >> >>Anyone know what pair triggers the light??? >> >>Bob- >> >> >>-----Original Message- >>From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>Behalf Of Justin Wilson >>Sent: Thursday, March 11, 2010 12:15 PM >>To: WISPA General List >>Subject: Re: [WISPA] Ethernet LEDs >> >>Simple terms it's the completion of a circuit. >> >>--- >>Justin Wilson >> >>On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: >> >>> This may be a little out there, but does anyone know what causes the >>> "link" light to show on an ethernet jack when the cable is plugged in? >>> Is it as simple as just attaching an led to one of the signal wires, >>> or >>> is there some logic in there. Just curious. >>> >>> >>> --- >>> --- >>> --- >>> --- >>> >>> WISPA Wants You! Join today! >>> 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/ >> >> >>--- > - >> >>WISPA Wants You! Join today! >>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/ >> >> >> >>--- > - >>WISPA Wants You! Join today! >>http://signup.wispa.org/ >>--- > - >> >>WISPA Wireless List: wireless@wispa.org >> >>S
Re: [WISPA] Ethernet LEDs
Good explanation by Lawerence. He touched on it, but to expand a little as it helps trouble shooting. The link light comes on when the receive side knows there is link. If you only get a light on one end of a link, you know which pair to look at, though it could be the port is bad. Also, I believe the IEEE spec would say no active or passive devices on the wire other than connectors. What you are wanting to do will mess up the capacitance and inductance of the wire and that can cause data errors. Also, on many devices, disabling the port does not drop link. Link is a physical characteristic, not a logical one. Often if the port is power, it will link regardless of the administrative state of the port. Cameron Crum wrote: > That is the answer I was looking for. We have these multi-poe boards we > designed and had a bunch manufactured ... just passive devices that take > an input voltage and spread it across 9 ethernet ports with two of the > ports switchable between the input voltage and 12V. The signal side of > the ethernet ports go to mirrored ports on the other side of the board > to plug into a switch/router. I was thinking that if there was an easy > way to sense the connection, I could throw in an XOR chip and a few > small relays to make a cheap remote power cycle per port by simply > disabling the port on the switch or router on the signal side of the > board. Since the switch chip is involved, it becomes a much more complex > and expensive part. > > Cameron > > > On 3/11/2010 2:38 PM, Lawrence E. Bakst wrote: > >> The link LED and all other LEDs for Ethernet Jacks/Connections are driven by >> the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. >> >> Link is turned on by the PHY sensing the LIT (link integrity test) in >> 10BaseT which I believe has become part of the auto-negotiation protocol in >> later standards. This is part of the Layer-1 (Physical Later) protocol in >> the spec. >> http://en.wikipedia.org/wiki/Autonegotiation >> >> So to be clear it's not just a LED hooked up to one of the wire via a >> resister or some analog hack like that. The PHY knows that their is another >> PHY on the other side of the cable and if the PHY sees the other PHY it >> turns on the LINK light. PHYs often provide other lines to show collision, >> speed, and duplex and these can be tied into other individual LEDS or >> bi-color LEDs. >> >> If the link lights are on at both ends the connection is good. It still >> might be the case that a duplex mismatch or bad auto-speed negotiation could >> cause problems. Both of these problems show up from time to time, especially >> on older gear. For both cases the cure is often to fix the speed or duplex >> on one side and that prevents the auto-negotiation from failing. >> >> One cause of not getting a link light is that a MDI/MDI-X mismatch. Most >> newer chips have auto MDI/MDI-X which prevents the problem in most cases. >> >> leb >> >> At 12:52 PM -0500 3/11/10, Robert West wrote: >> >> >>> Yeah, but which circuit? The transmit, receive or maybe the unused pairs? >>> >>> That got me wondering also. >>> >>> Anyone know what pair triggers the light??? >>> >>> Bob- >>> >>> >>> -Original Message- >>> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >>> Behalf Of Justin Wilson >>> Sent: Thursday, March 11, 2010 12:15 PM >>> To: WISPA General List >>> Subject: Re: [WISPA] Ethernet LEDs >>> >>> Simple terms it's the completion of a circuit. >>> >>> --- >>> Justin Wilson >>> >>> On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: >>> >>> >>> >>>> This may be a little out there, but does anyone know what causes the >>>> "link" light to show on an ethernet jack when the cable is plugged in? >>>> Is it as simple as just attaching an led to one of the signal wires, >>>> or >>>> is there some logic in there. Just curious. >>>> >>>> >>>> --- >>>> --- >>>> --- >>>> --- >>>> >>>> WISPA Wants You! Join today! >>>> http://signup.wispa.org/ >>>> --- >>>> --- >>>> --- >>>> --- >>>> -
Re: [WISPA] Ethernet LEDs
That is the answer I was looking for. We have these multi-poe boards we designed and had a bunch manufactured ... just passive devices that take an input voltage and spread it across 9 ethernet ports with two of the ports switchable between the input voltage and 12V. The signal side of the ethernet ports go to mirrored ports on the other side of the board to plug into a switch/router. I was thinking that if there was an easy way to sense the connection, I could throw in an XOR chip and a few small relays to make a cheap remote power cycle per port by simply disabling the port on the switch or router on the signal side of the board. Since the switch chip is involved, it becomes a much more complex and expensive part. Cameron On 3/11/2010 2:38 PM, Lawrence E. Bakst wrote: > The link LED and all other LEDs for Ethernet Jacks/Connections are driven by > the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. > > Link is turned on by the PHY sensing the LIT (link integrity test) in 10BaseT > which I believe has become part of the auto-negotiation protocol in later > standards. This is part of the Layer-1 (Physical Later) protocol in the spec. > http://en.wikipedia.org/wiki/Autonegotiation > > So to be clear it's not just a LED hooked up to one of the wire via a > resister or some analog hack like that. The PHY knows that their is another > PHY on the other side of the cable and if the PHY sees the other PHY it turns > on the LINK light. PHYs often provide other lines to show collision, speed, > and duplex and these can be tied into other individual LEDS or bi-color LEDs. > > If the link lights are on at both ends the connection is good. It still might > be the case that a duplex mismatch or bad auto-speed negotiation could cause > problems. Both of these problems show up from time to time, especially on > older gear. For both cases the cure is often to fix the speed or duplex on > one side and that prevents the auto-negotiation from failing. > > One cause of not getting a link light is that a MDI/MDI-X mismatch. Most > newer chips have auto MDI/MDI-X which prevents the problem in most cases. > > leb > > At 12:52 PM -0500 3/11/10, Robert West wrote: > >> Yeah, but which circuit? The transmit, receive or maybe the unused pairs? >> >> That got me wondering also. >> >> Anyone know what pair triggers the light??? >> >> Bob- >> >> >> -Original Message- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of Justin Wilson >> Sent: Thursday, March 11, 2010 12:15 PM >> To: WISPA General List >> Subject: Re: [WISPA] Ethernet LEDs >> >> Simple terms it's the completion of a circuit. >> >> --- >> Justin Wilson >> >> On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: >> >> >>> This may be a little out there, but does anyone know what causes the >>> "link" light to show on an ethernet jack when the cable is plugged in? >>> Is it as simple as just attaching an led to one of the signal wires, >>> or >>> is there some logic in there. Just curious. >>> >>> >>> --- >>> --- >>> --- >>> --- >>> >>> WISPA Wants You! Join today! >>> 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/ >>> >> >> >> >> WISPA Wants You! Join today! >> 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/ >> >> >> >> >> WISPA Wants You! Join today! >> 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/ >> > > WISPA Wants You! Join today! 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 LEDs
This is why I love this list. Lawrence, you are the "Dude of the day". In my home we shall honor you this evening as we dine and argue about my uselessness. Useless yes, but now I posses knowledge that they do not and that, my friend - thanks to you - will make all the difference. My hat is off to you. If I wore one, that is... Bob- -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Lawrence E. Bakst Sent: Thursday, March 11, 2010 3:38 PM To: WISPA General List Subject: Re: [WISPA] Ethernet LEDs The link LED and all other LEDs for Ethernet Jacks/Connections are driven by the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. Link is turned on by the PHY sensing the LIT (link integrity test) in 10BaseT which I believe has become part of the auto-negotiation protocol in later standards. This is part of the Layer-1 (Physical Later) protocol in the spec. http://en.wikipedia.org/wiki/Autonegotiation So to be clear it's not just a LED hooked up to one of the wire via a resister or some analog hack like that. The PHY knows that their is another PHY on the other side of the cable and if the PHY sees the other PHY it turns on the LINK light. PHYs often provide other lines to show collision, speed, and duplex and these can be tied into other individual LEDS or bi-color LEDs. If the link lights are on at both ends the connection is good. It still might be the case that a duplex mismatch or bad auto-speed negotiation could cause problems. Both of these problems show up from time to time, especially on older gear. For both cases the cure is often to fix the speed or duplex on one side and that prevents the auto-negotiation from failing. One cause of not getting a link light is that a MDI/MDI-X mismatch. Most newer chips have auto MDI/MDI-X which prevents the problem in most cases. leb At 12:52 PM -0500 3/11/10, Robert West wrote: >Yeah, but which circuit? The transmit, receive or maybe the unused pairs? > >That got me wondering also. > >Anyone know what pair triggers the light??? > >Bob- > > >-Original Message- >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >Behalf Of Justin Wilson >Sent: Thursday, March 11, 2010 12:15 PM >To: WISPA General List >Subject: Re: [WISPA] Ethernet LEDs > >Simple terms it's the completion of a circuit. > >--- >Justin Wilson > >On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: > >> This may be a little out there, but does anyone know what causes the >> "link" light to show on an ethernet jack when the cable is plugged in? >> Is it as simple as just attaching an led to one of the signal wires, >> or >> is there some logic in there. Just curious. >> >> >> --- >> --- >> --- >> --- >> >> WISPA Wants You! Join today! >> 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/ > > >--- - > >WISPA Wants You! Join today! >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/ > > > >--- - >WISPA Wants You! Join today! >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/ -- l...@iridescent.org WISPA Wants You! Join today! 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/ WISPA Wants You! Join today! 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 LEDs
The link LED and all other LEDs for Ethernet Jacks/Connections are driven by the Ethernet PHY chip or the Ethernet chip itself the PHY is integrated. Link is turned on by the PHY sensing the LIT (link integrity test) in 10BaseT which I believe has become part of the auto-negotiation protocol in later standards. This is part of the Layer-1 (Physical Later) protocol in the spec. http://en.wikipedia.org/wiki/Autonegotiation So to be clear it's not just a LED hooked up to one of the wire via a resister or some analog hack like that. The PHY knows that their is another PHY on the other side of the cable and if the PHY sees the other PHY it turns on the LINK light. PHYs often provide other lines to show collision, speed, and duplex and these can be tied into other individual LEDS or bi-color LEDs. If the link lights are on at both ends the connection is good. It still might be the case that a duplex mismatch or bad auto-speed negotiation could cause problems. Both of these problems show up from time to time, especially on older gear. For both cases the cure is often to fix the speed or duplex on one side and that prevents the auto-negotiation from failing. One cause of not getting a link light is that a MDI/MDI-X mismatch. Most newer chips have auto MDI/MDI-X which prevents the problem in most cases. leb At 12:52 PM -0500 3/11/10, Robert West wrote: >Yeah, but which circuit? The transmit, receive or maybe the unused pairs? > >That got me wondering also. > >Anyone know what pair triggers the light??? > >Bob- > > >-Original Message- >From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >Behalf Of Justin Wilson >Sent: Thursday, March 11, 2010 12:15 PM >To: WISPA General List >Subject: Re: [WISPA] Ethernet LEDs > >Simple terms it's the completion of a circuit. > >--- >Justin Wilson > >On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: > >> This may be a little out there, but does anyone know what causes the >> "link" light to show on an ethernet jack when the cable is plugged in? >> Is it as simple as just attaching an led to one of the signal wires, >> or >> is there some logic in there. Just curious. >> >> >> --- >> --- >> --- >> --- >> >> WISPA Wants You! Join today! >> 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/ > > > > >WISPA Wants You! Join today! >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/ > > > > >WISPA Wants You! Join today! >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/ -- l...@iridescent.org WISPA Wants You! Join today! 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 LEDs
And sometimes some of the "used" also not in the connector... "My internets ain't workin'!" Bob- -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Justin Wilson Sent: Thursday, March 11, 2010 1:02 PM To: WISPA General List Cc: WISPA General List Subject: Re: [WISPA] Ethernet LEDs It is all the used pairs. The unused are not part of the circuit. The easy way to test this is make some patch cables. Leave out a wire. We have probably all seen patch cables where the unused wires are not even in the connector. --- Justin Wilson On Mar 11, 2010, at 12:52 PM, "Robert West" wrote: > Yeah, but which circuit? The transmit, receive or maybe the unused > pairs? > > That got me wondering also. > > Anyone know what pair triggers the light??? > > Bob- > > > -Original Message- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On > Behalf Of Justin Wilson > Sent: Thursday, March 11, 2010 12:15 PM > To: WISPA General List > Subject: Re: [WISPA] Ethernet LEDs > > Simple terms it's the completion of a circuit. > > --- > Justin Wilson > > On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: > >> This may be a little out there, but does anyone know what causes the >> "link" light to show on an ethernet jack when the cable is plugged >> in? >> Is it as simple as just attaching an led to one of the signal wires, >> or >> is there some logic in there. Just curious. >> >> >> --- >> --- >> --- >> --- >> >> WISPA Wants You! Join today! >> 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/ > > > --- > --- > -- > > WISPA Wants You! Join today! > 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/ > > > > --- > --- > --- > --- > > WISPA Wants You! Join today! > 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/ WISPA Wants You! Join today! 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/ WISPA Wants You! Join today! 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 LEDs
It is all the used pairs. The unused are not part of the circuit. The easy way to test this is make some patch cables. Leave out a wire. We have probably all seen patch cables where the unused wires are not even in the connector. --- Justin Wilson On Mar 11, 2010, at 12:52 PM, "Robert West" wrote: > Yeah, but which circuit? The transmit, receive or maybe the unused > pairs? > > That got me wondering also. > > Anyone know what pair triggers the light??? > > Bob- > > > -Original Message- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] > On > Behalf Of Justin Wilson > Sent: Thursday, March 11, 2010 12:15 PM > To: WISPA General List > Subject: Re: [WISPA] Ethernet LEDs > > Simple terms it's the completion of a circuit. > > --- > Justin Wilson > > On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: > >> This may be a little out there, but does anyone know what causes the >> "link" light to show on an ethernet jack when the cable is plugged >> in? >> Is it as simple as just attaching an led to one of the signal wires, >> or >> is there some logic in there. Just curious. >> >> >> --- >> --- >> --- >> --- >> >> WISPA Wants You! Join today! >> 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/ > > > --- > --- > -- > > WISPA Wants You! Join today! > 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/ > > > > --- > --- > --- > --- > > WISPA Wants You! Join today! > 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/ WISPA Wants You! Join today! 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 LEDs
On 11 March 2010 12:52, Robert West wrote: > Yeah, but which circuit? The transmit, receive or maybe the unused pairs? > > That got me wondering also. > > Anyone know what pair triggers the light??? > The transmit pair must be connected to the receive pair. This will make almost any switch show a link light. WISPA Wants You! Join today! 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 LEDs
Yeah, but which circuit? The transmit, receive or maybe the unused pairs? That got me wondering also. Anyone know what pair triggers the light??? Bob- -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Justin Wilson Sent: Thursday, March 11, 2010 12:15 PM To: WISPA General List Subject: Re: [WISPA] Ethernet LEDs Simple terms it's the completion of a circuit. --- Justin Wilson On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: > This may be a little out there, but does anyone know what causes the > "link" light to show on an ethernet jack when the cable is plugged in? > Is it as simple as just attaching an led to one of the signal wires, > or > is there some logic in there. Just curious. > > > --- > --- > --- > --- > > WISPA Wants You! Join today! > 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/ WISPA Wants You! Join today! 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/ WISPA Wants You! Join today! 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 LEDs
Simple terms it's the completion of a circuit. --- Justin Wilson On Mar 11, 2010, at 11:29 AM, Cameron Crum wrote: > This may be a little out there, but does anyone know what causes the > "link" light to show on an ethernet jack when the cable is plugged in? > Is it as simple as just attaching an led to one of the signal wires, > or > is there some logic in there. Just curious. > > > --- > --- > --- > --- > > WISPA Wants You! Join today! > 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/ WISPA Wants You! Join today! 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 LEDs
Logic. I have a picture of this loopback thing I made on my keyring which will take ~1 lifetimes to upload from my cell phone. Using it you can plug it into something and it should give it link. Works on anything except some Sun stuff (configuration dependent) IME. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 “Success is not final, failure is not fatal: it is the courage to continue that counts.” --- Winston Churchill On Thu, Mar 11, 2010 at 11:29 AM, Cameron Crum wrote: > This may be a little out there, but does anyone know what causes the > "link" light to show on an ethernet jack when the cable is plugged in? > Is it as simple as just attaching an led to one of the signal wires, or > is there some logic in there. Just curious. > > > > WISPA Wants You! Join today! > 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/ > WISPA Wants You! Join today! 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/
[WISPA] Ethernet LEDs
This may be a little out there, but does anyone know what causes the "link" light to show on an ethernet jack when the cable is plugged in? Is it as simple as just attaching an led to one of the signal wires, or is there some logic in there. Just curious. WISPA Wants You! Join today! 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/
