Linux virtual network interface – bond

Latest reply: Sep 11, 2019 01:14:03 121 2 3 0

Linux virtual network interface – bond


1. Definition of bond

Generally, bonding is to bind multiple physical network interfaces to make them run like a network interface. The bonding technology implements network port redundancy and load balancing, achieving high availability and reliability. Enterprise Linux allows administrators to bind multiple network interfaces to a channel by using a bonding kernel module and a special network interface called a channel bonding interface. According to the selected binding mode, channel binding, two or more network interfaces are used as a network interface, thereby increasing bandwidth and/providing redundancy.


2. How to set up a bond to implement link aggregation?

First, we need the hosts of two virtual NICs,

bond 1


Like this, there are two virtual NICs eth0 and eth1.


Before the experiment, delete all the configured IP addresses to maintain a pure environment.

As shown in the following figure.

 bond 2


[root@desktop20 Desktop]# nmcli connection add con-name bond0 ifname bond0 type bond mode active-backup ip4 ## set upbond0

[root@desktop20 Desktop]# watch -n 1 cat /proc/net/bonding/bond0 ## Surveillance

bond 3


[root@desktop20 Desktop]# nmcli connection add con-name eth0 ifname eth0 type bond-slave master bond0 ## Add eth0 to bond0.

[root@desktop20 Desktop]# nmcli connection add con-name eth1 ifname eth1 type bond-slave master bond0 ## Add eth1 to bond0.

 bond 4



[root@desktop20 Desktop]# ifconfig eth0 down

bond 5


[root@desktop20 Desktop]# ifconfig eth0 up

 bond 6


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Created Sep 10, 2019 09:53:32 Helpful(0) Helpful(0)

Nice sharing.
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Admin Created Sep 11, 2019 01:14:03 Helpful(0) Helpful(0)

Thanks for your sharing.
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