lost and found ( for me ? )

Ubuntu 11.04 : KVM : configure multiple bridges


Here’s an explanation of how to configure multiple bridges.

My server has multiple NICs.
I’ve already associated eth2 with br0
# brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.002655e1ezzz       no              eth2
virbr0          8000.000000000000       yes


I’m going to associate eth3 with br1.

cat /etc/network/interfaces
auto eth2
iface eth2 inet manual

auto br0
iface br0 inet static
       address 10.0.10.14
       netmask 255.255.255.0
       network 10.0.10.0
       gateway 10.0.10.254
       bridge_ports eth2
       bridge_stp off
       bridge_fd 0
       bridge_maxwait 0


edit  /etc/network/interfaces
make a bridge ( br1 ) for eht3 and associate it with eth3
    24 auto eth3
    25 #iface eth3 inet static
    26 #       address 10.0.20.14
    27 #       netmask 255.255.255.0
    28 iface eth3 inet manual
    29
    30
    31 auto br1
    32 iface br1 inet static
    33         address 10.0.20.14
    34         netmask 255.255.255.0
    35         network 10.0.20.0
    36         gateway 10.0.20.254
    37         bridge_ports eth3
    38         bridge_stp off
    39         bridge_fd 0
    40         bridge_maxwait 0


restart network script
# /etc/init.d/networking restart

# brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.002655e1ezzz       no              eth2
br1             8000.002655e1exxx       no              eth3
virbr0          8000.000000000000       yes

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