One switch port suddenly no longer at gigabit speed

Question

I've got this manageable switch : https://www.amazon.com/TP-Link-Ethernet-Sheilded-Replacement-TL-SG108E/dp/B00K4DS5KU/ in my network for about 3 months now.

Yesterday I noticed that a computer directly connected to it did not have gigabit link (100mbps instead). Since I had just reinstalled it I though it was related but after swapping the cables between different ports and devices, I came to the conclusion that the issue was the switch itself.

I've also checked that all the ports are on 'auto' setting.

What do you think of it? Should I buy a new one and return this one?

score 2 · Accepted Answer · answered Dec 03 '17 at 11:14

2

As a gigabit connection needs all 4 pairs, check first that all the 8 pins are able to have contact: any of them shouldn't be contorted and there should be no dirt. During the testing you could force the port to operate as gigabit instead of auto.

answered Dec 03 '17 at 11:14

Esa Jokinen

46,944
3
83
129

I already tried to force gigabit speed but then the port status show "disconnected" or something. I'm going to try what you say. – dblouis Dec 03 '17 at 11:19
It works now. Apparently the cable was not properly connected, I had to force a little. – dblouis Dec 03 '17 at 11:23
A physical problem, just like I assumed. :) – Esa Jokinen Dec 03 '17 at 11:28

score 0 · Answer 2 · answered Dec 03 '17 at 11:02

0

What do you think of it? Should I buy a new one and return this one?

I think it is a cheap consumer switch that has no place in a professional environment. It's up to you what you do with it.

answered Dec 03 '17 at 11:02

user9517

115,471
20
215
297

Well I'm not a professional, I think I shouldn't have posted here. Anyway you think it's not fixable? – dblouis Dec 03 '17 at 11:06
1

Yes, [su] is a better place. – user9517 Dec 03 '17 at 11:41

One switch port suddenly no longer at gigabit speed

2 Answers2