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I have a Debian 8 Jessie machine with two interfaces (eth0 and eth1) bonded in balance-rr mode (aka 0). It works smoothly, but when I try to set up a bridge on it, it doesn't work.

My /etc/network/interfaces

auto lo
iface lo inet loopback

# The primary network interface
auto bond0
iface bond0 inet static
    slaves eth0 eth1
    bond-mode 0
    bond-miimon 100
    bond_downdelay 200
    bond_updelay 200

auto br0
iface br0 inet static
        address 192.168.20.20
        netmask 255.255.255.0
        gateway 192.168.20.1
        dns-nameservers 8.8.8.8
    bridge_ports bond0
    bridge_maxwait 0
    bridge_fd 0
    bridge_stp off

Any clue? Thanks.

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1
  • Show us logs tail -f /var/log/messages /var/log/syslog /var/log/dmesg & and do service networking restart .
    – Michal Sokolowski
    May 20, 2015 at 13:51

4 Answers 4

Reset to default
1

This is working config from my server:

/etc/network/interfaces:

auto lo
iface lo inet loopback

auto bond0
iface bond0 inet manual
    up ifconfig bond0 0.0.0.0 up
    slaves eth1 eth0
    bond-mode 0
    bond-miimon 100
    bond-lacp-rate 0

auto br0
iface br0 inet static
    address 192.168.162.235
    netmask 255.255.192.0
    gateway 192.168.150.254
    bridge_ports bond0 vnet0
    bridge_stp off # switch on with more system like this
    bridge_maxage 0
    bridge_ageing 0
    bridge_ageing 0

Besides that you need to install:

 apt-get install bridge-utils ifenslave

Remove any bond module configuration from /etc/modprobe.d/

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1
  • 1
    +1 Note that OP's mistake was having the bond interface as static without an address. Also, you can replace the ifconfig with iproute2 (preferred): up ip link set up dev bond0.
    – GnP
    Apr 6, 2016 at 13:40
1

It was working fine for me also with bond-mode 5 (lacp) and the ip command suggested in one of the comments:

auto bond0
iface bond0 inet manual
    up ip link set up dev bond0
    slaves eth1 eth0
    bond-mode 4
    bond-miimon 100
    bond-lacp-rate 0

auto br0
iface br0 inet static
    address 192.168.162.235
    netmask 255.255.192.0
    gateway 192.168.150.254
    bridge_ports bond0
    bridge_stp off # switch on with more system like this
    bridge_maxage 0
    bridge_ageing 0

Anyway all credit goes to Michal Sokolowski.

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0 
auto enp3s0
iface enp3s0 inet manual
bond-master bond0

auto enp2s0
iface enp2s0 inet manual
bond-master bond0

auto bond0
iface bond0 inet manual
     up ip link set up dev bond0
    bond-mode 5
    bond-miimon 100
    bond-lacp-rate 0
    bond-slaves enp3s0 enp2s0

auto virbr0
iface virbr0 inet static
    address 192.168.10.3
    gateway 192.168.10.1
    netmask 255.255.255.0
    dns-nameservers 192.168.10.2 192.168.10.1
    bridge_ports bond0
    dns-search yoyo.yo
    bridge_stp off
    bridge_fd 0
    bridge maxwait 0
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0

My solution was to add the line:

pre-up sleep 2

to bridge configuration.

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