(10) NIC bridging -- Debian GNU/Linux

Bridging on Debian GNU/Linux

在Debian/Ubuntu裡想要啟用bridge(IEEE 802.1d)功能，必須要先安裝bridge-utils套件；假設你已經安裝了KVM/XEN，那麼bridge-utils則早就安裝完畢。
假設現在要把eth0設定成bridge，作為VM與外部溝通的管道：

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual

auto br0
iface br0 inet static
 address 192.168.10.198
 netmask 255.255.255.0
 gateway 192.168.10.1
 up sleep 3; ethtool -s br0 autoneg off speed 1000 duplex full 
 bridge_ports bond0
 bridge_fd 0  #forward delay=0s
 bridge_hello 2   #say hello time=2s
 bridge_maxage 12 #maximum message age
 bridge_stp on    #啟用STP

請注意這裡關於eth0的宣告只能使用manual！重新啟動網路後，看看裡頭的資訊吧！

2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP qlen 1000
    link/ether f4:6d:04:7b:be:13 brd ff:ff:ff:ff:ff:ff
3: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether f4:6d:04:7b:be:13 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.198/24 brd 192.168.10.255 scope global br0
    inet6 fe80::f66d:4ff:fe7b:be13/64 scope link 
       valid_lft forever preferred_lft forever
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 
    link/ether ca:f4:7c:0b:34:1f brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0

Bridge on bonding

延續先前bonding的設定，我們把bond0設定成bridge：

auto eth0
iface eth0 inet manual
bond-master bond0

auto eth1
iface eth1 inet manual
bond-master bond0

auto bond0
iface bond0 inet manual
 # address 192.168.10.198
 # netmask 255.255.255.0
 # gateway 192.168.10.1 
 bond-slaves eth0 eth1
 bond-mode 5
 bond-miimon 100
 bond-downdelay 200
 bond-updelay 200

auto br0
iface br0 inet static
 address 192.168.10.22
 netmask 255.255.255.0
 gateway 192.168.10.1
 bridge_ports bond0
 bridge_stp off

當然你想設定DHCP也行！別忘了重新啟動網路吧！

invoke-rc.d networking restart

參考文章：

• Bridging Network Connection

Share