Network Bonding/NIC Teaming is the creation of a single bonded interface by combining 2 or more Ethernet interfaces. This helps in high availability and performance improvement.
Step 1: Check the bond interface using ifconfig Command as shown below.
# ifconfig | grep -i bond
Step 2: Bond interface files.
# cat /etc/sysconfig/network-scripts/ifcfg-bond0 BONDING_OPTS="mode=1 primary=eth0 miimon=100" ONBOOT=yes DEVICE=bond0 BOOTPROTO=none BRIDGE=br0 TYPE=BOND
Step 3: Status of Bond interfaces.
# cat /proc/net/bonding/bond0
According to the above Output , Active Passive Bonding is configured , where eth0 and eth4 are bonded together and form the bond interface(i.e bond0) . Lan cards eth0 & eth4 both are up and eth0 is active.