I want to use
100baseT/Full (100 MBit/s) on a Archer C7 v5 (with a Atheros AR8327N switch chipset) running OpenWrt 19.07.2 because it's connected to my router through a CAT 5 cable that's built into the wall.
ethtool the access point only supports the
1000baseT/Full link mode and also uses it. However, according to the data sheet, the chipset has support for the full variety of link modes, including
Is there a way to add the lower-throughput link modes to the list of supported link modes? I would be happy to open a pull request against the OpenWrt if that's necessary and someone could give me some pointers on what to change.
# ethtool eth0 Settings for eth0: Supported ports: [ ] Supported link modes: 1000baseT/Full Supported pause frame use: No 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: on Current message level: 0x000000ff (255) drv probe link timer ifdown ifup rx_err tx_err Link detected: yes