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New network cable appears slower than powerline adapters...
I bit the bullet & ran some network cables revently
to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
On Sunday, 3 May 2020 15:41:00 UTC+1, JimK wrote:
I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA Check that all eight conductors are present and connected. Some patch cables only have two pairs fitted and will only operate at 100Mbit/s. Similarly, a broken conductor may cause the connection to operate at 100Mbit/s. John |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 15:40:55 +0100 (GMT+01:00), Jimk
wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? Are these commercially made patch cables or home made? A common mistake when making them at home is not putting the pairs on the right pins and so the cables won't work over any distance. Do you get any indication (LED (switch / device) or soft output 'Link Speed, 1Gb') telling you you are running at Gb speeds and it's not actually 100Mb (1/3rd of the theoretical max on yer PL adaptors)? Cheers, T i m |
New network cable appears slower than powerline adapters...
On 03/05/2020 15:40, Jimk wrote:
I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? My guess was that you that the AV300 devices were getting real world throughput of 200Mbps or better, and now you have gone to ethernet, but for whatever reason it has fallen back to 100Mbps operation. This would normally be as a result of a caballing issue - either not all 4 pairs properly connected, or, the pairs have been split incorrectly. Start with a visual inspection of the connectors to verify the proper wire ordering. Compare with: https://en.wikipedia.org/wiki/TIA/EIA-568#Wiring (the B variant is the more common I find) If all look good, then buzz out each connection with a multimeter. Note also that most network switches will give and indication of the speed of the device conected to any port - either with a separate "gigabit" LED, or changing the colour of the "connected" LED (typically from amber for 100Mbps, to green for gigabit) -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
New network cable appears slower than powerline adapters...
T i m Wrote in message:
On Sun, 3 May 2020 15:40:55 +0100 (GMT+01:00), Jimk wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? Are these commercially made patch cables or home made? A common mistake when making them at home is not putting the pairs on the right pins and so the cables won't work over any distance. Do you get any indication (LED (switch / device) or soft output 'Link Speed, 1Gb') telling you you are running at Gb speeds and it's not actually 100Mb (1/3rd of the theoretical max on yer PL adaptors)? Cheers, T i m Patch cables are purchased. Only thing I can see on the (Netgear) switch is the port LEDs appear blink faster when it's on the powerline adaptors. I haven't delved into the switch just plugged it in & it worked.... -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 15:55:58 +0100 (GMT+01:00), Jimk wrote:
Any way to check that without taking them out again? One of the cheapo ethernet cable testers will. Around a fiver from CPC/eBay/Amazon etc(*). Or just loop back each pair (ie one wire connected to the other wire of the same pair) and check for continuity at the other end. In theory with the kit powered off and network cable plugged in there ought to be continity through the isolating transmormers in each pair. Never tried that so don't know what to expect. You mention a coupler and changing that made difference. Are the plugs and coupler making proper contact on all 8 wires? No iffy plug end? Not quite sure of the topography. Is this cable effectively an up link from the switch that the Pi's are connected to? What is attached to the upstream end of this uplink cable? (*) Simple but basic for about £30 you can get rather more sophisticated tester that shows which end, or how far away, a cable fault is and any wiring errors. Search SC8108 loads about also can have up to 8 remote dongles that are numbered that shows on the tester for cable identification. -- Cheers Dave. |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 15:40:55 +0100 (GMT+01:00), Jimk
wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA In addition to the advice about checking whether operating speed is 10, 100 or 1000 Mbit/sec, you should also check the interface counters to see if the error rate is significant. If you're running Linux, then "ifconfig" should give you something like this - see the "RX errors" and "TX errors" lines: ens33: flags=4163UP,BROADCAST,RUNNING,MULTICAST mtu 1500 inet 192.168.159.138 netmask 255.255.255.0 broadcast 192.168.159.255 inet6 fe80::20c:29ff:fe3f:43fb prefixlen 64 scopeid 0x20link ether 00:0c:29:3f:43:fb txqueuelen 1000 (Ethernet) RX packets 4088 bytes 523484 (511.2 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 3597 bytes 406309 (396.7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 Note that many (all?) modern linuxes has depreciated "ifconfig" for the "ip" command. You can normally install the net-tools package to obtain ifconfig. "netstat -i" also shows the counters like this: Kernel Interface table Iface MTU RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg ens33 1500 4145 0 0 0 3653 0 0 0 BMRU lo 65536 8395 0 0 0 8395 0 0 0 LRU For network equipment, you might be able to use SNMP to read the counters. |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 16:35:21 +0100 (GMT+01:00), Jimk
wrote: snip Are these commercially made patch cables or home made? A common mistake when making them at home is not putting the pairs on the right pins and so the cables won't work over any distance. Do you get any indication (LED (switch / device) or soft output 'Link Speed, 1Gb') telling you you are running at Gb speeds and it's not actually 100Mb (1/3rd of the theoretical max on yer PL adaptors)? Patch cables are purchased. Ok. Are they marked 'Cat5e' or similar OOI? Only thing I can see on the (Netgear) switch is the port LEDs appear blink faster when it's on the powerline adaptors. Which would reflect your observations. Do you have a laptop you could put on the remote end and see what it says re connection speed? I haven't delved into the switch just plugged it in & it worked.... Understood, that is the norm with a basic (unmanaged) switch. Cheers, T i m |
New network cable appears slower than powerline adapters...
Caecilius wrote:
Note that many (all?) modern linuxes has depreciated "ifconfig" for It's "deprecated" :-) The command 'ip addr' will produce output somewhat like that produced by 'ifconfig' if you have ip but not ifconfig. -- Chris Green · |
New network cable appears slower than powerline adapters...
"Dave Liquorice" Wrote in message:
On Sun, 3 May 2020 15:55:58 +0100 (GMT+01:00), Jimk wrote: Any way to check that without taking them out again? One of the cheapo ethernet cable testers will. Around a fiver from CPC/eBay/Amazon etc(*). Or just loop back each pair (ie one wire connected to the other wire of the same pair) and check for continuity at the other end. In theory with the kit powered off and network cable plugged in there ought to be continity through the isolating transmormers in each pair. Never tried that so don't know what to expect. You mention a coupler and changing that made difference. Are the plugs and coupler making proper contact on all 8 wires? No iffy plug end? Not quite sure of the topography. Is this cable effectively an up link from the switch that the Pi's are connected to? What is attached to the upstream end of this uplink cable? (*) Simple but basic for about £30 you can get rather more sophisticated tester that shows which end, or how far away, a cable fault is and any wiring errors. Search SC8108 loads about also can have up to 8 remote dongles that are numbered that shows on the tester for cable identification. Well - through a blessedly brief process of elimination it was in fact a dodgy CAT5 cable connector, luckily I had 4 more to do a substitution with :-) All up & running now. Thanks to all -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
T i m Wrote in message:
On Sun, 3 May 2020 16:35:21 +0100 (GMT+01:00), Jimk wrote: snip Are these commercially made patch cables or home made? A common mistake when making them at home is not putting the pairs on the right pins and so the cables won't work over any distance. Do you get any indication (LED (switch / device) or soft output 'Link Speed, 1Gb') telling you you are running at Gb speeds and it's not actually 100Mb (1/3rd of the theoretical max on yer PL adaptors)? Patch cables are purchased. Ok. Are they marked 'Cat5e' or similar OOI? Only thing I can see on the (Netgear) switch is the port LEDs appear blink faster when it's on the powerline adaptors. Which would reflect your observations. Do you have a laptop you could put on the remote end and see what it says re connection speed? I haven't delved into the switch just plugged it in & it worked.... Understood, that is the norm with a basic (unmanaged) switch. Cheers, T i m Turns out dodgy cable connector - sorted now. Cheers -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
John Rumm Wrote in message:
On 03/05/2020 15:40, Jimk wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? My guess was that you that the AV300 devices were getting real world throughput of 200Mbps or better, and now you have gone to ethernet, but for whatever reason it has fallen back to 100Mbps operation. This would normally be as a result of a caballing issue - either not all 4 pairs properly connected, or, the pairs have been split incorrectly. Start with a visual inspection of the connectors to verify the proper wire ordering. Compare with: https://en.wikipedia.org/wiki/TIA/EIA-568#Wiring (the B variant is the more common I find) If all look good, then buzz out each connection with a multimeter. Note also that most network switches will give and indication of the speed of the device conected to any port - either with a separate "gigabit" LED, or changing the colour of the "connected" LED (typically from amber for 100Mbps, to green for gigabit) Now that would have slowed me down a bit! Sorted - dodgy cable connector. Cheers -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
Caecilius Wrote in message:
On Sun, 3 May 2020 15:40:55 +0100 (GMT+01:00), Jimk wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA In addition to the advice about checking whether operating speed is 10, 100 or 1000 Mbit/sec, you should also check the interface counters to see if the error rate is significant. If you're running Linux, then "ifconfig" should give you something like this - see the "RX errors" and "TX errors" lines: ens33: flags=4163UP,BROADCAST,RUNNING,MULTICAST mtu 1500 inet 192.168.159.138 netmask 255.255.255.0 broadcast 192.168.159.255 inet6 fe80::20c:29ff:fe3f:43fb prefixlen 64 scopeid 0x20link ether 00:0c:29:3f:43:fb txqueuelen 1000 (Ethernet) RX packets 4088 bytes 523484 (511.2 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 3597 bytes 406309 (396.7 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 Note that many (all?) modern linuxes has depreciated "ifconfig" for the "ip" command. You can normally install the net-tools package to obtain ifconfig. "netstat -i" also shows the counters like this: Kernel Interface table Iface MTU RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg ens33 1500 4145 0 0 0 3653 0 0 0 BMRU lo 65536 8395 0 0 0 8395 0 0 0 LRU For network equipment, you might be able to use SNMP to read the counters. Noted Cheers -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
Some network hardware not as tolerant perhaps, though the whole idea is that
the cable can almost be any bits of wire I assumed. Are we sure the two joined cables are not faulty. Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "Jimk" wrote in message ... I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
Two people and a socket with movable link or two people and a very long
continuity tester lead! Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "Jimk" wrote in message o.uk... Wrote in message: On Sunday, 3 May 2020 15:41:00 UTC+1, JimK wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA Check that all eight conductors are present and connected. Some patch cables only have two pairs fitted and will only operate at 100Mbit/s. Similarly, a broken conductor may cause the connection to operate at 100Mbit/s. John Any way to check that without taking them out again? -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 19:01:43 +0100 (GMT+01:00), Jimk
wrote: T i m Wrote in message: On Sun, 3 May 2020 16:35:21 +0100 (GMT+01:00), Jimk wrote: snip Are these commercially made patch cables or home made? A common mistake when making them at home is not putting the pairs on the right pins and so the cables won't work over any distance. Do you get any indication (LED (switch / device) or soft output 'Link Speed, 1Gb') telling you you are running at Gb speeds and it's not actually 100Mb (1/3rd of the theoretical max on yer PL adaptors)? Patch cables are purchased. Ok. Are they marked 'Cat5e' or similar OOI? Only thing I can see on the (Netgear) switch is the port LEDs appear blink faster when it's on the powerline adaptors. Which would reflect your observations. Do you have a laptop you could put on the remote end and see what it says re connection speed? I haven't delved into the switch just plugged it in & it worked.... Understood, that is the norm with a basic (unmanaged) switch. Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). Cheer, T i m |
New network cable appears slower than powerline adapters...
T i m Wrote in message:
On Sun, 3 May 2020 19:01:43 +0100 (GMT+01:00), Jimk wrote: T i m Wrote in message: On Sun, 3 May 2020 16:35:21 +0100 (GMT+01:00), Jimk wrote: snip Are these commercially made patch cables or home made? A common mistake when making them at home is not putting the pairs on the right pins and so the cables won't work over any distance. Do you get any indication (LED (switch / device) or soft output 'Link Speed, 1Gb') telling you you are running at Gb speeds and it's not actually 100Mb (1/3rd of the theoretical max on yer PL adaptors)? Patch cables are purchased. Ok. Are they marked 'Cat5e' or similar OOI? Only thing I can see on the (Netgear) switch is the port LEDs appear blink faster when it's on the powerline adaptors. Which would reflect your observations. Do you have a laptop you could put on the remote end and see what it says re connection speed? I haven't delved into the switch just plugged it in & it worked.... Understood, that is the norm with a basic (unmanaged) switch. Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
We are now.
Thx "Brian Gaff \(Sofa 2\)" Wrote in message: Some network hardware not as tolerant perhaps, though the whole idea is that the cable can almost be any bits of wire I assumed. Are we sure the two joined cables are not faulty. Brian -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
On 03/05/2020 21:37, Jimk wrote:
We are now. Thx "Brian Gaff \(Sofa 2\)" Wrote in message: Some network hardware not as tolerant perhaps, though the whole idea is that the cable can almost be any bits of wire I assumed. Are we sure the two joined cables are not faulty. Brian Higher speed use more than one pair of wires in a cable so they have to be matched in length - one pair cannot be significantly longer because the number of twists are different for instance. -- mailto : news {at} admac {dot} myzen {dot} co {dot} uk |
New network cable appears slower than powerline adapters...
On 03/05/2020 21:53:20, alan_m wrote:
On 03/05/2020 21:37, Jimk wrote: We are now. Thx "Brian Gaff \(Sofa 2\)" Wrote in message: Some network hardware not as tolerant perhaps, though the whole idea is that the cable can almost be any bits of wire I assumed. Are we sure the two joined cables are not faulty. Â* Brian Higher speed use more than one pair of wires in a cable so they have to be matched in length - one pair cannot be significantly longer because the number of twists are different for instance. I thought each pair was treated separately, and the 2b bytes on each lane concatenated. Can you provide a link suggesting I am wrong? |
New network cable appears slower than powerline adapters...
That is aademic in this case, since these are supposedly actual cables made
for the job. I think that you really do have to have a large mismatch in length and capacitance to make it really misbehave though I don't use the faster speeds here myself. Brian -- ----- -- This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please Note this Signature is meaningless.! "Fredxx" wrote in message ... On 03/05/2020 21:53:20, alan_m wrote: On 03/05/2020 21:37, Jimk wrote: We are now. Thx "Brian Gaff \(Sofa 2\)" Wrote in message: Some network hardware not as tolerant perhaps, though the whole idea is that the cable can almost be any bits of wire I assumed. Are we sure the two joined cables are not faulty. Brian Higher speed use more than one pair of wires in a cable so they have to be matched in length - one pair cannot be significantly longer because the number of twists are different for instance. I thought each pair was treated separately, and the 2b bytes on each lane concatenated. Can you provide a link suggesting I am wrong? |
New network cable appears slower than powerline adapters...
Jimk wrote:
Wrote in message: On Sunday, 3 May 2020 15:41:00 UTC+1, JimK wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA Check that all eight conductors are present and connected. Some patch cables only have two pairs fitted and will only operate at 100Mbit/s. Similarly, a broken conductor may cause the connection to operate at 100Mbit/s. John Any way to check that without taking them out again? You can buy a simple tester for a fairly modest amount. The basic ones typically have a detachable dongle you stick at the remote end and you plug the tester in at the other end. They check all 8 conductors are connected and not crossed over etc. (You can get smart ones which check bandwidth etc but they cost serious money- not the kind of thing a hobbyist would normally have.) -- https://www.unitedway.org/our-impact...an-trafficking |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk
wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. Cheers, T i m |
New network cable appears slower than powerline adapters...
On Sun, 3 May 2020 21:53:20 +0100, alan_m
wrote: snip Higher speed use more than one pair of wires in a cable so they have to be matched in length - one pair cannot be significantly longer because the number of twists are different for instance. Wouldn't *every* (Cat5e Ethernet cable in this case) have different lengths per per because each pair *is* twisted differently? eg, Wouldn't the pair with the most twists be longer than one with fewer? Cheers, T i m |
New network cable appears slower than powerline adapters...
On Monday, 4 May 2020 10:22:38 UTC+1, T i m wrote:
On Sun, 3 May 2020 21:53:20 +0100, alan_m wrote: snip Higher speed use more than one pair of wires in a cable so they have to be matched in length - one pair cannot be significantly longer because the number of twists are different for instance. Wouldn't *every* (Cat5e Ethernet cable in this case) have different lengths per per because each pair *is* twisted differently? eg, Wouldn't the pair with the most twists be longer than one with fewer? Yes. John |
New network cable appears slower than powerline adapters...
T i m Wrote in message:
On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. The only difference I can see between what I now have & what you are pushing, is one cable connector... -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
On 03/05/2020 19:02, Jimk wrote:
John Rumm Wrote in message: On 03/05/2020 15:40, Jimk wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? My guess was that you that the AV300 devices were getting real world throughput of 200Mbps or better, and now you have gone to ethernet, but for whatever reason it has fallen back to 100Mbps operation. This would normally be as a result of a caballing issue - either not all 4 pairs properly connected, or, the pairs have been split incorrectly. Start with a visual inspection of the connectors to verify the proper wire ordering. Compare with: https://en.wikipedia.org/wiki/TIA/EIA-568#Wiring (the B variant is the more common I find) If all look good, then buzz out each connection with a multimeter. Note also that most network switches will give and indication of the speed of the device conected to any port - either with a separate "gigabit" LED, or changing the colour of the "connected" LED (typically from amber for 100Mbps, to green for gigabit) Now that would have slowed me down a bit! Sorted - dodgy cable connector. Cheers But the blinky binky leds should tell you what speed is running anyway. My Netgear GS105 four port unmanaged switch has two green leds per port :- Left hand = 100M Right hand = 10M Both = Gigabit Ditto everything else connected. Only my samsung 22H5600 smart tv runs at 100M (according to the GS105 leds), everything else is Gigabit |
New network cable appears slower than powerline adapters...
|
New network cable appears slower than powerline adapters...
Jimk wrote:
T i m Wrote in message: On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. The only difference I can see between what I now have & what you are pushing, is one cable connector... And 2 x 8 contact pairs that are unattended and not wiped against each other quite frequently by movement of the apparatus or when they happen to be playing up. An unnecessary fault waiting to happen. Pre-wired cat6 patch leads at least up to 30m long are freely available for not enormously much. -- Roger Hayter |
New network cable appears slower than powerline adapters...
On Mon, 4 May 2020 13:26:39 +0100 (GMT+01:00), Jimk
wrote: snip I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. You will indeed. ;-) The only difference I can see between what I now have & what you are pushing, 'What I'm pushing'? ICGAF if your network has issues as it's not mine. You were also the one asking for help and presumably, haven't been installing networks as a part of your living for 30+ years? is one cable connector... Exactly. !00% too many 'cable connectors' in any network segment. They might be considered acceptable as a temporary measure, as part of a test or to get you out of trouble, but not something I believe 'most people' (that know what they are doing) would want to leave there if they didn't have to (for technical [1] and reliability issues). This would also apply to using Powerline or WiFi instead of Ethernet cable. If the CCTV feed was important and you missed something crucial because of a bad (and undesirable in the first place) connector, you too might see the issue? Cheers, T i m [1] In any Ethernet cable length (or twisted pair cable in general) I you should have the *minimum* of cable that is untwisted as possible, as seen when it's going though a plug and socket. When you join two cables together as you have you have at least *doubled* the quantity of the amount of parallel cable in the link. I'm not saying that will stop it working, just that it's sub-optimal. |
New network cable appears slower than powerline adapters...
On 04/05/2020 14:43, Roger Hayter wrote:
Jimk wrote: T i m Wrote in message: On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. The only difference I can see between what I now have & what you are pushing, is one cable connector... And 2 x 8 contact pairs that are unattended and not wiped against each other quite frequently by movement of the apparatus or when they happen to be playing up. An unnecessary fault waiting to happen. Pre-wired cat6 patch leads at least up to 30m long are freely available for not enormously much. Why would anyone need CAT6 in a domestic environment ?. Complete overkill. CAT5E will do everything you need and is much more flexible. |
New network cable appears slower than powerline adapters...
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New network cable appears slower than powerline adapters...
(Roger Hayter) Wrote in message:
Jimk wrote: T i m Wrote in message: On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. The only difference I can see between what I now have & what you are pushing, is one cable connector... And 2 x 8 contact pairs that are unattended and not wiped against each other quite frequently by movement of the apparatus or when they happen to be playing up. An unnecessary fault waiting to happen. How long have I got then? Less than the other cable ends that don't move either? -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
T i m Wrote in message:
On Mon, 4 May 2020 13:26:39 +0100 (GMT+01:00), Jimk wrote: snip I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. You will indeed. ;-) The only difference I can see between what I now have & what you are pushing, 'What I'm pushing'? ICGAF if your network has issues as it's not mine. You were also the one asking for help and presumably, haven't been installing networks as a part of your living for 30+ years? is one cable connector... Exactly. !00% too many 'cable connectors' in any network segment. They might be considered acceptable as a temporary measure, as part of a test or to get you out of trouble, but not something I believe 'most people' (that know what they are doing) would want to leave there if they didn't have to (for technical [1] and reliability issues). This would also apply to using Powerline or WiFi instead of Ethernet cable. If the CCTV feed was important and you missed something crucial because of a bad (and undesirable in the first place) connector, you too might see the issue? Cheers, T i m [1] In any Ethernet cable length (or twisted pair cable in general) I you should have the *minimum* of cable that is untwisted as possible, as seen when it's going though a plug and socket. When you join two cables together as you have you have at least *doubled* the quantity of the amount of parallel cable in the link. I'm not saying that will stop it working, just that it's sub-optimal. I'll do an experiment then! Do calm down dear... -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
On Mon, 4 May 2020 15:14:18 +0100 (GMT+01:00), Jimk
wrote: snip [1] In any Ethernet cable length (or twisted pair cable in general) I you should have the *minimum* of cable that is untwisted as possible, as seen when it's going though a plug and socket. When you join two cables together as you have you have at least *doubled* the quantity of the amount of parallel cable in the link. I'm not saying that will stop it working, just that it's sub-optimal. I'll do an experiment then! Good for you. Do calm down dear... I'll calm down if you promise not to waste anyone else's time here when your experiment turns out as some of us have predicted? Cheers, T i m |
New network cable appears slower than powerline adapters...
Jimk wrote:
(Roger Hayter) Wrote in message: Jimk wrote: T i m Wrote in message: On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. The only difference I can see between what I now have & what you are pushing, is one cable connector... And 2 x 8 contact pairs that are unattended and not wiped against each other quite frequently by movement of the apparatus or when they happen to be playing up. An unnecessary fault waiting to happen. How long have I got then? Less than the other cable ends that don't move either? Welll if you get problems with the link the first thing you're going to do is waggle the accessible RJ45s, isn't it. Apart from any other disturbance dusting or vacuuming etc etc. -- Roger Hayter |
New network cable appears slower than powerline adapters...
(Roger Hayter) Wrote in message:
Jimk wrote: (Roger Hayter) Wrote in message: Jimk wrote: T i m Wrote in message: On Sun, 3 May 2020 21:16:00 +0100 (GMT+01:00), Jimk wrote: snip Turns out dodgy cable connector - sorted now. Gdgd. Do you intend replacing both leads with a single one at some time? See how we go. Hmmmm. ;-( Personally I prefer to have a continuous piece of cable from end to end (for the reason you have discovered). I've got 3 more connectors in stock... Yeahbut, when they go intermittent they (or the reason you are getting 'network issues') could be a PITA. We will see. The only difference I can see between what I now have & what you are pushing, is one cable connector... And 2 x 8 contact pairs that are unattended and not wiped against each other quite frequently by movement of the apparatus or when they happen to be playing up. An unnecessary fault waiting to happen. How long have I got then? Less than the other cable ends that don't move either? Welll if you get problems with the link the first thing you're going to do is waggle the accessible RJ45s, isn't it. Apart from any other disturbance dusting or vacuuming etc etc. Shouldn't be a problem - as I predict. -- Jimk ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
New network cable appears slower than powerline adapters...
Brian Reay wrote:
Jimk wrote: Wrote in message: On Sunday, 3 May 2020 15:41:00 UTC+1, JimK wrote: I bit the bullet & ran some network cables revently to get away from using power line plugs. I had some long patch cables in stock so threaded those through. One through a gigabit switch, serves 2 raspberry pis running cctv . When connected by dlink300av powerline adaptors the data throughput seems higher than the new cable, with smoother playback of recorded events & no lag. Switch to the cable & it's very different & slower.... I was hoping it would be at least as good if not quicker? (The cable is in reality two CAT5 patch cables joined with a straight through connector. Initially with a moderately priced cat6 labelled connector it didn't work, with a cheapo but still called cat6 connector it does, sort of, see above). Next steps to resolve please? TIA Check that all eight conductors are present and connected. Some patch cables only have two pairs fitted and will only operate at 100Mbit/s. Similarly, a broken conductor may cause the connection to operate at 100Mbit/s. John Any way to check that without taking them out again? You can buy a simple tester for a fairly modest amount. The basic ones typically have a detachable dongle you stick at the remote end and you plug the tester in at the other end. They check all 8 conductors are connected and not crossed over etc. (You can get smart ones which check bandwidth etc but they cost serious money- not the kind of thing a hobbyist would normally have.) A very few computers, had a built-in tester. It used TDR and could detect shorts and opens. And also give a distance to the fault. Some Marvell GbE network chips had this. The machine I got it on, had a dirty RJ45, with solder flux deposits on one wire of the connector, and I got to use the test feature right away. It could tell me "one pair is open", because the pin could not make contact. To use the feature, you connect the computer to your router, with a cable. Turn off the power to the router (so it cannot interfere with the TDR operation). Then run the test, and it'll tell you the status of the pairs and the wire. https://web.archive.org/web/20030320...hite_Paper.pdf Paul |
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