Re: network bonding on Debian/Trixie

Hi,

On Tue, Oct 17, 2023, 8:00 AM Gary Dale <gary@extremeground.com> wrote:

I'm trying to configure network bonding on an AMD64 system running
Debian/Trixie. I've got a wired connection and a wifi connection, both
of which work individually. I'd like them to work together to improve
the throughput but for now I'm just trying to get the bond to work.
However when I configure them, the wifi interface always shows down.

# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1000
     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
     inet 127.0.0.1/8 scope host lo
        valid_lft forever preferred_lft forever
     inet6 ::1/128 scope host noprefixroute
        valid_lft forever preferred_lft forever
2: enp10s0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq
master bond0 state UP group default qlen 1000
     link/ether 3c:7c:3f:ef:15:47 brd ff:ff:ff:ff:ff:ff
4: wlxc4411e319ad5: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN
group default qlen 1000
     link/ether c4:41:1e:31:9a:d5 brd ff:ff:ff:ff:ff:ff
7: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
     link/ether 3c:7c:3f:ef:15:47 brd ff:ff:ff:ff:ff:ff
     inet 192.168.1.20/24 brd 192.168.1.255 scope global bond0
        valid_lft forever preferred_lft forever
     inet6 fe80::3e7c:3fff:feef:1547/64 scope link proto kernel_ll
        valid_lft forever preferred_lft forever

It does this even if I pull the cable from the wired connection. The
wifi never comes up.

Here's the /etc/network/interfaces file:

auto lo
iface lo inet loopback

auto enp10s0
iface enp10s0 inet manual
     bond-master bond0
     bond-mode 1

auto wlxc4411e319ad5
iface wlxc4411e319ad5 inet manual
     bond-master bond0
     bond-mode 1

auto bond0
iface bond0 inet static
     address 192.168.1.20
     netmask 255.255.255.0
     network 192.168.1.0
     gateway 192.168.1.1
     bond-slaves enp10s0 wlxc4411e319ad5
     bond-mode 1
     bond-miimon 100
     bond-downdelay 200
     bond-updelay 200

I'd like to get it to work in a faster mode but for now the backup at
least allows the networking to start without the wifi. Other modes seem
to disable networking until both interfaces come up, which is not a good
design decision IMHO. At least with mode 1, the network starts.

Any ideas on how to get the wifi to work in bonding?

Probably your wifi card does not support MII, check with:

~]# ethtool wlxc4411e319ad5 | grep "Link detected:"

and:

~]# cat /proc/net/bonding/bind0