Re-terminating a Keystone Jack After a Bad Ethernet Run
A friend's DIY Ethernet run negotiated at 80 Mbps on a 2.5-gig fiber connection — and the termination was almost certainly to blame. This episode walks through why a link can come up and pass traffic at one-twentieth of its rated speed, what the negotiated speed actually tells you, and whether a punched-down keystone jack can be pulled out and redone. We cover the real failure causes — incomplete IDC seating, split pairs, excessive untwist, nicked conductors — and the bigger question underneath: which finicky jobs are worth learning yourself, and which are best left to someone who does them…
The skinny
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