Identifying the slow part (getting 100 speeds instead of gigabit)

Vanilla · 11 Sep 2013 at 11:00

So I have a TP Link Gigabit switch, a PC with a gigabit onboard and a server with gigabit onboard.

Transfer speeds are only 11MB/sec when some time ago I recall getting 60-70MB/sec.

What's the process in finding the weak spot here? How can I see if my NICs are at 100 speed? Is there a way to separately benchmark them without using another device?

Basically how would you go about troubleshooting this?

Vanilla · 11 Sep 2013 at 11:09

Also, there have recently been some changes around cables - is it possible some cables can't handle gigabit?

Yamahahahahaha · 11 Sep 2013 at 12:52

Vanilla said:
Also, there have recently been some changes around cables - is it possible some cables can't handle gigabit?

Gigabit requires all 4 pairs of wires to be working, it sounds like one of the new wires has a broken pair (or two!).

bremen1874 · 11 Sep 2013 at 14:13

Also check that you haven't got a cable that only contains two pairs. Some of the cables included free with routers are like this.

Assuming you're using Windows you can use task manager to check the link speeds.

Vanilla · 11 Sep 2013 at 15:42

bremen1874 said:
Assuming you're using Windows you can use task manager to check the link speeds.

hmmm my PC says 100mbps !!!

bledd · 11 Sep 2013 at 16:03

-Check what your server says
-Try another cable between PC and switch

Vanilla · 11 Sep 2013 at 16:48

bledd. said:
-Check what your server says
-Try another cable between PC and switch

Yup server is at 1GB. Looks like it's the PC.....

Got another cable to try

Vanilla · 11 Sep 2013 at 16:50

Was the cable, now at 1Gbps

Ta all

bledd · 11 Sep 2013 at 16:52