100mb on 1gig connection

[piggo64]

My ethernet connected devices have dropped to 80mbps from 900mbps , the wireless connection however is working perfectly! (400 plus.)

Could it be a faulty hub4?

It's worked well up until now

Thanks!

Refresh data

3.0 Downstream channelsChannel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	40.366287	0	0
2	Locked	40.366287	0	0
3	Locked	40.946209	0	0
4	Locked	40.366287	0	0
5	Locked	40.366287	0	0
6	Locked	40.946209	0	0
7	Locked	40.946209	0	0
8	Locked	40.366287	0	0
9	Locked	40.946209	0	0
10	Locked	40.366287	0	0
11	Locked	38.605377	0	0
12	Locked	38.983261	0	0
13	Locked	40.366287	0	0
14	Locked	40.946209	0	0
15	Locked	40.366287	0	0
16	Locked	40.366287	0	0
17	Locked	40.366287	0	0
18	Locked	40.946209	0	0
19	Locked	40.946209	0	0
20	Locked	40.946209	0	0
21	Locked	40.366287	0	0
22	Locked	40.366287	0	0
23	Locked	40.366287	0	0
24	Locked	40.366287	0	0
25	Locked	40.366287	0	0
26	Locked	40.366287	0	0
27	Locked	38.983261	0	0
28	Locked	40.366287	0	0
29	Locked	40.366287	0	0
30	Locked	40.366287	0	0
31	Locked	39.854763	0	0

3.1 Downstream channelsChannel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

159

88

4K

1720

QAM4096

424

3.1 Downstream channelsChannel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

159

Locked

43

-1.2

111238663

0

[Andrew-G · Accepted solution]

Could be a faulty hub, but at 80-90 Mbps immediate suspicion falls on the ethernet cables (or any switch you might have).  When connecting to a device and assigning an IP address, the Ethernet protocols the hub uses negotiate with the device, if the responses indicate any issues it will drop back from a 1000 Mbps connection to a 100 Mbps speed.  Sometimes reseating the connectors helps, sometimes it's a dubious quality cable, or ageing/wear of the cable and connectors. Try a different cable and see if that helps.  If you decide to buy a new cable, buy Cat 6a or higher.

If the replacement cable is the same, and different ethernet devices have the same issue, that points to a hub fault.

[piggo64]

Thanks for the prompt reply
I'm pretty certain that it is the hub because I have 3x pcs al connected to seperate ports on the hub with cat6 cable, and they are differing lengths but same result on all. Unlikely that 3 seperate cables would become faulty at the same time. I have booked an engineer for next week.
Cheers!
Jeff

[jbrennand]

Check the PC's NIC cards have not dropped to 10/100 - ensure they are set to 1GB and all drivers are up to date. Done a windows update to them all recently?