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I spent ~$35 on new cables and my LAN speed increased 6x (sh.itjust.works)

submitted 1 month ago by anonymouse2@sh.itjust.works to c/selfhosted@lemmy.world

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After seeing that my wireless speeds were much faster than the speeds I was getting over Ethernet, I decided to invest in some new cables. I didn't know it before, but I saw while I was changing them out that my current cables were Cat 5e. While putting my network together, I had just been grabbing whatever cables I could find in my scrap drawers. Now I have Cat 8 cables and my speeds jumped from 7MB/s to an average of over 40MB/s. It's a much bigger improvement than I expected, especially for such a small investment.

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[–] rtxn@lemmy.world 4 points 1 month ago (1 children)

This. I've had issues at work while imaging classroom computers where some would finish in ~30 minutes and a few would need hours. All of the computers used Cat6 cables. This being a classroom, and students being absolute wankbags, they kept yanking the computers and kicking the cables, so the wires came loose from the plugs. I later used ethtool to debug the slow computers -- the switch would only allow 10baseT link modes.

[–] dgriffith@aussie.zone 3 points 1 month ago (1 children)

For later reference, the link light on most network cards is a different colour depending on link speed. Usually orange for 1G, green for 100M and off for 10M (with data light still blinking).

[–] catloaf@lemm.ee 1 points 1 month ago (2 children)

But that depends on the card. And some gigabit devices won't do 10Mb at all.

[–] IMongoose@lemmy.world 1 points 1 month ago

We upgraded our network and had old as shit devices that now need a dumb switch hooked into our $80k or whatever cisco switches because they can't do 10Mb lol

[–] dgriffith@aussie.zone 1 points 3 weeks ago* (last edited 3 weeks ago)

True. Hence my caveat of "most cards". If it's got LEDs on the port, it's quite likely to signal which speed it is at with those LEDs.

I haven't yet come across a gigabit card that won't do 10Mbit (edit: switches are a different matter) but sometimes I've come across cards that fail to negotiate speeds correctly, eg trying for gigabit when they only actually have a 4 wire connection that can support 100Mbit. Forcing the card to the "correct" speed makes them work.