Force Archer C7 v2 WAN to 100Mbps
Posted: Fri Jan 22, 2016 2:06 pm
Recently discovered that the upstream router we're connecting too has its link speed set to 100baseT/full, but I can't get the WAN port on my router to match that. Auto negotiation sets it to 1000baseT/full and using ethtool doesn't have any effect.
After turning off autoneg, the output for 'ethtool eth0' is as follows:
Especially the supported link modes are a bit strange. I don't think that info is correct and assume that 100baseT/full 100baseT/half etc. should also be possible for this hardware.
Any suggestions?
After turning off autoneg, the output for 'ethtool eth0' is as follows:
Code: Select all
Settings for eth0:
Supported ports: [ ]
Supported link modes: 1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: No
Advertised link modes: Not reported
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: external
Auto-negotiation: off
Current message level: 0x000000ff (255)
drv probe link timer ifdown ifup rx_err tx_err
Link detected: yes
Any suggestions?
It seems the router itself only has one real network interface which is set to 1000baseT/full. That interface is connected to a switch which can be controlled with 'swconfig'.