<html dir="ltr"><head></head><body style="text-align:left; direction:ltr;"><div>You might want to test the line in the wall and see if it's wired A/A, B/B or cross-over style A/B at the wall jacks. The color coding needs to be identical on both ends of the connection in nearly all cases.</div><div><br></div><div>Unless the new switch is just too stupid. Used to be switch to switch REQUIRED a crossover cable. Most, but not all, are now smart enough to reverse in/out on plug-in. </div><div><br></div><div>On Thu, 2019-04-11 at 10:13 -0400, Derek Atkins via Ale wrote:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><pre>Hi,</pre><pre><br></pre><pre>Alex Carver via Ale <</pre><a href="mailto:ale@ale.org"><pre>ale@ale.org</pre></a><pre>> writes:</pre><pre><br></pre><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><pre>It might still be a firmware update that at first didn't have VLAN</pre><pre>support and then later did.</pre><pre><br></pre><pre>If you want to really test it, gather everything up together in one</pre><pre>location and replicate the configuration you have (TV + Router into</pre><pre>switch, switch into modem) with short patch cables. If all works well</pre><pre>then yes you've got a broken wire in the infrastructure wiring. If it</pre><pre>doesn't work you've got a VLAN problem.</pre></blockquote><pre><br></pre><pre>When I connect the switch directly to the router locally, the link</pre><pre>lights up (i.e, I get blinky lights both on the router and on the switch).</pre><pre><br></pre><pre>When I connect the switch through the wall, the link lights do NOT</pre><pre>illuminate, either on the switch or on the router.</pre><pre><br></pre><pre>A VLAN misconfiguration would not cause this behavior.</pre><pre><br></pre><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><pre>It's also strange to see that your in-wall wiring is two pairs but wired</pre><pre>to 8p8c jacks? Is it unshielded twisted pair (CAT3) or is it a bundled</pre><pre>run (straight wire) meant only for voice (in which case it should have</pre><pre>been using 6p4c/RJ12 connectors).</pre></blockquote><pre><br></pre><pre>There are many many pairs of wires in there. It's probably cat3 cable,</pre><pre>but there are probably 5-6 pairs in there. There is a single cable with</pre><pre>many pairs that goes into the box in the other room, and two pairs are</pre><pre>connected to the RJ45.</pre><pre><br></pre><pre>They need to use a 8p jack because it is ETHERNET. Remember that at</pre><pre>least 100BaseT only requires 2 pairs, and I think GigE also only</pre><pre>requires 2 pairs.</pre><pre><br></pre><pre>I just don't understand why the switch is unhappy behind the 2 pairs but</pre><pre>my other devices are just fine. I.e., it doesn't matter whether I plug</pre><pre>in the Uverse box or the Smart TV -- both of them work (individually) in</pre><pre>the other room. But if I put the switch there, the switch wont sync to</pre><pre>the router.</pre><pre><br></pre><pre>-derek</pre><pre><br></pre></blockquote><div><span><pre><pre>-- <br></pre>James P. Kinney III
Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
http://heretothereideas.blogspot.com/
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