2.5gb nic limited to 1gb

M

MoxProxMe

New Member
Jan 8, 2025
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I added an anker 2.5gb usb-c nic and my link speed is only 1gb. I checked ethtool and the supported link modes are 2.5gb. I see the advertised is only 1gb and I'm wondering how i can get it to advertise the 2.5gb link speed, any tips or suggestions?

2.5 1.jpg
 
ok, so i found that running ethtool -s <nic_id> speed 2500 duplex full autoneg on will enable it but it wont persist if I reboot.
 
VictorSTS said:
On /etc/network/interfaces add this under the interface secction:

Code: 
pre-up /usr/sbin/ethtool -s $IFACE speed 2500 duplex full autoneg on
Click to expand...
I added that to interfaces as a attribute to my nic and it didn't stay upon reboot. did i place it in the wrong place? Is it supposed to be before the auto vmbr1?

Code: 
auto vmbr1
iface vmbr1 inet manual
        pre-up /usr/sbin/ethtool -s $IFACE speed 2500 duplex full autoneg on        
        bridge-ports enx00e04c98f86c
        bridge-stp off
        bridge-fd 0
        bridge-vlan-aware yes
        bridge-vids 2-4099

I also noticed the following error, does it think the name is (offset 24)?
Code: 
proxmox /usr/sbin/ifup[5489]: warning: vmbr1: pre-up cmd '/usr/sbin/ethtool -s vmbr1 speed 2500 duplex full autoneg on' failed: returned 75 (netlink error: no device matches name (offset 24) netlink error: No such device)

Looking more into the debian networking, does it have to be post-up because its a vlan interface with no ip?

Thanks again!
 
Last edited:
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