How do I manually switch the active and standby NICs in a bond?

Solution

1. Run the following command to identify the current active NIC and verify that both the active and standby NICs are in the up state:

   [root@localhost ~]# cat /proc/net/bonding/bond0  //bond0 is the bond name in your environment

2. Run the following command to switch the active and standby NICs:

   [root@localhost ~]# ifenslave -c bond0 eth0  //bond0 is the bond name; eth0 is the standby NIC in the bond