CentOS6.5 system dual Nic binding configuration details

To bind a CentOS dual-Nic, you can use two NICs to virtualize an ENI (which must be supported by a switch). The aggregated device looks like a separate Ethernet interface device, in general, two NICs have the same IP address, and parallel links are aggregated into a logical link. This document describes in detail how to bind a dual-network card to centos6.4. before proceeding, determine whether the NetworkManager service has been stopped. Otherwise, an error is reported. # ServiceNetworkM CentOS dual Nic binding is to use two NICs to virtualize a single NIC (which must be supported by a switch). The aggregated device looks like a separate Ethernet interface device, in general, two NICs have the same IP address, and parallel links are aggregated into a logical link. This document describes in detail how to bind a dual-network card to centos 6.4.
Determine whether the NetworkManager service has been stopped before the operation. Otherwise, an error is reported.
# Service NetworkManager status
The following figure shows that NetworkManager has been stopped to bind a network:
1. create a ifcfg-bond0 file in the/etc/sysconfig/network-scripts/directory with the following content: DEVICE = bond0 USERCTL = noBOOTPROTO = staticONBOOT = yesIPADDR = 10.0.0.10 # as needed, enter the IP address mask gateway NETMASK = 255.255.255.0GATEWAY = 10.0.0.1TYPE = Ethernet 2. modify the ifcfg-em1 file, as follows: DEVICE = em1ONBOOT = yesBOOTPROTO = noneMASTER = bond0SLAVE = yesUSERCTL = no modify the ifcfg-em2 file as follows: DEVICE = em2ONBOOT = yesBOOTPROTO = noneMASTER = bond0SLAVE = yesUSERCTL = no 3. /etc/modprobe. d/create bonding in the directory. conf file. the file content is as follows: alias bond0 bonding and then restart the network service network restart
4. test
Start terminal on the server and ping the gateway.
Unplug a network cable and check the ping data. after you confirm that there is no problem, connect it to the network cable and unplug another network cable to observe the effect of dual-Nic binding.