Home Networking

198 readers

1 users here now

A community to help people learn, install, set up or troubleshoot their home network equipment and solutions.

Rules

Please stay on topic.
Please use the search function to look for keywords related to what you want to ask before posting since most common issues have been answered.
No Ads. This community is for support and discussion. Ads and self promotion are not welcome here.
No product reviews or announcements. If you have a question about a product, be specific about what you want to know.
Be civil. Don't be a jerk. Not being a jerk is surprisingly easy.
No URL shorteners. URL shorteners tend to hide the real use of a link. For this reason, please use normal links, even if they're long.
No affiliate links.
No gatekeeping. With profession shall come professionalism. Extend help without judging others for their ignorance. The same goes for downvoting of comments or posts for "stupid questions" or not being as knowledgeable as others.

founded 1 year ago

MODERATORS

[email protected]

Connection switched from 1Gbs to 100Mbs after re-terminating (alien.top)

submitted 1 year ago by [email protected] to c/[email protected]

5 comments fedilink hide all child comments

Fairy new to the ethernet game, but I just re-terminated one of my cat6 runs from a RJ45 plug to a punch-down keystone jack. My understanding is this is a superior way to terminate pure copper cables, so now I have the patch panels and other gear I've been starting to do that in various places.

Once plugged back in, my switch negotiated the connection to 100Mbs, instead of 1Gbs as previously. This isn't a major problem as I can switch the port to 1Gbs manually, which I have done and which has worked. But it begs the question, have I messed up the punch-down termination? Should I do it again?

I'm interested in some of the detail about how this works here. How does the switch determine what speed to auto-negotiate to? And what kind of physical factors come into play?

Thanks.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 1 year ago

You have a problem with the blue and/or brown pair in one or more of your terminations. Even if the wire is properly seated in the groove, look for nicks or breaks in the conductor where you stripped the outer jacket off, or maybe you accidently had the tool reversed when you punched the wire and it's cut on the inside, not the outside, or if you reused an end, check that the original wire didn't leave some of its plastic behind in the groove preventing a proper punch down.