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A comment on 10Gb/s Ethernet: switching to a Broadcom SFP+ module. Parent comment

Re:10Gb/s Ethernet: switching to a Broadcom SFP+ module by toast0 on Tuesday June 16, 2026 @11:32PM (#48565381)
At 10g, sfp+ switches are cheaper and more available than 10gbase-T switches. Fiber transceivers seem reasonable, but I could be off; I've only looked a little at fiber prices, I already have cat5 in the wall, so I'm on DAC for nearby stuff and twisted pair for other rooms for the forseable future. I don't really need 10G, but it provides a bit of fun.
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Re:10Gb/s Ethernet: switching to a Broadcom SFP+ module by Keyframe on Wednesday June 17, 2026 @04:39AM (#48567515)
for shorter runs you might even get 10G on cat5.
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Re:10Gb/s Ethernet: switching to a Broadcom SFP+ module by AshamedCaptain on Wednesday June 17, 2026 @07:26AM (#48568786)
I am using 10G over an ~15m 4 twisted pair phone cable (PTT, common in France even decades ago for ISDN, but no cat cable at all) and don't remember seeing a frame lost in quite some years.
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Re:10Gb/s Ethernet: switching to a Broadcom SFP+ module by throw0101a on Wednesday June 17, 2026 @06:48AM (#48568484)
802.3an officially gives you 10G on Cat5e (and plain-6) up 55m; 6A gets you to 100m.
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Re:10Gb/s Ethernet: switching to a Broadcom SFP+ module by toast0 on Wednesday June 17, 2026 @10:52AM (#48571379)
Yes, I have 10g over cat5. I don't need it, but I have it.

Ethernet specs are for cabling in dense conduit. Most people don't have dense conduit in their house. Much cable tests better than the rating on the jacket.

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