Ok, here's the thing, I have a WRT3200acm with openwrt and when I connect a cat6 cable to one of the ports the transfer rate is 100mbps even I have tried with ethtool but no luck, I have also tried several cat6 cables and no luck either! I leave my config below! thx in advance!
root@OpenWrt:~# ethtool eth0
Settings for eth0:
Supported ports: [ MII ]
Supported link modes: 1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: No
Supported FEC modes: Not reported
Advertised link modes: 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: off
Supports Wake-on: d
Wake-on: d
Link detected: yes
You have made an assertion that you only get 100Mbps transfer rates. What is the basis of this? How did you arrive at this number and what are the exact rates you saw in that testing?
Does your computer's ethernet port support 1000Mbps? And if so, is it set to auto-negotiation?
Is the connection between your router and the computer just the one cable, or are there additional cables or connections (such as wiring through the walls or anything else between the two devices)?
Have you checked the ports for physical issues (debris, bent pins, etc.)?
Have you tried all of the ports on the router?
Do you have another gigabit ethernet device you can connect instead of your windows computer?
Does your computer's ethernet port support 1000Mbps? And if so, is it set to auto-negotiation?
Yes and yes
Is the connection between your router and the computer just the one cable, or are there additional cables or connections (such as wiring through the walls or anything else between the two devices)?
Just one cable to the router
Have you checked the ports for physical issues (debris, bent pins, etc.)?
No issues at all and pretty clean
Have you tried all of the ports on the router?
Yes
Do you have another gigabit ethernet device you can connect instead of your windows computer?
Yes and still the same speed, In fact I have connected my pc to a Ubiquiti antenna and in the station and it shows me that the ethernet speed is 1000mbps.
What happens if you connect two gigabit devices together with one of your cables (I.e directly connected, not going though the router). You don’t even need to have working network configs, just a physical link - does it negotiate a 100 Mbps link or 1 Gbps?
Ok... I see you edited your post to elaborate on the gigabit connection with the Ubiquiti hardware. That rules out issues with the cables (we've seen people who have tried multiple cables cat5e and better, only to find out that they may have had a bad batch or poorly built cables; I wanted to make sure we could eliminate that as a culprit)
The auto-negotiation should work only if enabled on both sides. In theory it may even go half-duplex if enabled only over one side. Also, there are different standards like 1000Base-TX (possibly unsupported at all or over the LAN ports). You may try connecting the WAN and the LAN with already tested cable to see what happens. You may try with a straight and a crossover cable to see if there is any difference.
This is showing the laptop is the limiting factor, as it is only advertising 10 and 100. So 100 was negotiated.
I don't think the DFS driver yet supports fixed rates, only autonegotiation.
Crossover cables are never used for GbE, but the hardware should detect them and continue to work. In gigabit all four wire pairs send data simultaneously at 250 Mb each pair, in both directions on the same pair.
