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diff --git a/nycmesh_notes.org b/nycmesh_notes.org index efa29a2..5539722 100644 --- a/nycmesh_notes.org +++ b/nycmesh_notes.org @@ -195,6 +195,48 @@ https://docs.google.com/presentation/d/1oFOaihV2rB5D3QikrlEOqNK56CetrGw7/edit need to be patient and possibly assist in diagnosing a problem when it comes up. + +* <2023-12-10 Sun> --------------------------------------------------------- + +- was able to fix the wired ethernet in our walls. seems there were a + number of issues: + 1. poor wiring for ethernet + - on the patch panel it seemed that 'someone' just pushed wires + into them w/out using a punchdown tool. + - the wires were unraveled and out of their outer protective sheath. + 2. the wires were configured for the 'T568A' configuration where all + wiring everywhere else in our network uses 'T568B' + - this may FINALLY explain why the speeds were so slow. i think + that we were only operating on 4 wires not all 8. +- when cable tests were performed i saw the numbers come back like so: + + |-------------+------------------| + | main tester | secondary tester | + |-------------+------------------| + | 1 | 3 | + | 2 | 6 | + | 3 | 1 | + | 4 | 4 | + | 5 | 5 | + | 6 | 2 | + | 7 | 7 | + | 8 | | + |-------------+------------------| + + - the 'main tester' always displayed the numbers in the correct + order; but the 'secondary tester' displayed them in the order + listed in the table above. i realized at some point that i was + getting numbers where it seemed as thou the wires are 'T568A' + instead of the standard 'T568B'. at one point i did my punchdown + on the keystone jack again cuz i thought i did something + incorrectly. + + - i didnt realize that for Fast Ethernet (100 Mbit/s) you only need + pins 1, 2, 3 and 6. + + - references + https://www.ifixit.com/Guide/How+to+test+an+Ethernet+Cable/158750 + * speed tests -------------------------------------------------------------- the following are speed tests run from NN546 |