Hi,

On Tue, Oct 17, 2023, 8:00 AM Gary Dale <g...@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

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