Centos dual Nic binding technology in the/etc/sysconfig/network-scripts/directory to create a ifcfg-bond0 file, the content of the file is as follows: DEVICE = bond0 www.2cto.com USERCTL = noBOOTPROTO = noneONBOOT = yesIPADDR = login = 255.255.255.0GATEWAY = 192.168.100.1TYPE = "miimon = 80 mode = 0" binding mode is 0, which is the rond-robin mode. Then modify the ifcfg-eth0 file, as follows: DEVICE = "eth0" # HWADDR = "00: 0D: 60: 9A: 7B: 0A "ONBOOT =" yes "BOOTPROTO = noneMASTER = bond0SLAVE = yesUSERCTL = no modify the ifcfg-eth1 file as follows: DEVICE =" eth1 "# HWADDR =" 00: 0D: 60: 9A: 7B: 0B "ONBOOT =" yes "BOOTPROTO = noneMASTER = bond0SLAVE = yesUSERCTL = no in/etc/modprobe. d/create bonding in the directory. the conf file contains the following content: alias bond0 bonding, restart the network service network restart, and then you can use ifconfig-a to view the bound bond0 Nic. the mac addresses of bond0 and eth0 and eth1 are the same. You can run the cat/proc/net/bonding/bond0 command to check the binding status.