View network card information
[root@test ~]# nmcli dev DEVICE TYPE STATE eth0 802-3-ethernet connected eth1 802-3-ethernet connected -- IP 192.168.2.100 eth2 802-3-ethernet connecting (getting IP configuration)
Purpose: Network card eth1 eth2 in use. Bind eth1 the2 as bond0
Shut down the NetworkManager service
[root@test network-scripts]# chkconfig --list | grep NetworkManager NetworkManager 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@test network-scripts]# service NetworkManager stop Stopping NetworkManager daemon: [ OK ] [root@test network-scripts]# chkconfig NetworkManager off [root@test network-scripts]# chkconfig --list | grep NetworkManager NetworkManager 0:off 1:off 2:off 3:off 4:off 5:off 6:off [root@test network-scripts]#
Go to the /etc/modprobe.d directory. Create a bonded device
echo "alias bond0 bonding" > /etc/modprobe.d/bonding.conf
Backup the original NIC configuration file, backup ifcfg-eth0, ifcfg-eth1. Create the ifcfg-bond0 file. and edit the ifcfg-eth0 ifcfg-eth1 file
[root@test network-scripts]# cp ifcfg-eth0 ifcfg-eth0_bak20180423 [root@test network-scripts]# cp ifcfg-eth1 ifcfg-eth1_bak20180423 [root@test network-scripts]# cp ifcfg-eth2 ifcfg-eth2_bak20180423
Contents of the ifcfg-bond0 file
# cat /etc/sysconfig/network-scripts/ifcfg-bond0 DEVICE="bond0" BONDING_OPTS="mode=1 miimon=100 primary=eth1" NM_CONTROLLED="no" IPADDR="192.168.2.100" NETMASK="255.255.255.0" GATEWAY="192.168.2.1" ONBOOT="yes"
Contents of the ifcfg-eth1 file
[root@test network-scripts]# cat ifcfg-eth1 DEVICE=eth1 TYPE=Ethernet UUID=0578ea57-3027-43f3-a070-e3bd523e2810 ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=none IPV6INIT=no HWADDR=08:00:27:3D:6D:C4 SLAVE=yes MASTER=bond0 [root@test network-scripts]#
Contents of the ifcfg-eth2 file
[root@test network-scripts]# cat ifcfg-eth2 DEVICE=eth2 TYPE=Ethernet UUID=291cc332-f718-4e56-9986-4fcbf5c7f66b ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=none HWADDR = 08: 00: 27: 6A: 01: 30 IPV6INIT=no SLAVE=yes MASTER=bond0 [root@test network-scripts]#
restart network service
[root@test network-scripts]# service network restart
Shutting down interface bond0: [ OK ]
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface bond0: Determining if ip address 192.168.2.100 is already in use for device bond0...
[ OK ]
Bringing up interface eth0:
Determining IP information for eth0... done.
[ OK ]
[root@test network-scripts]#
View IP address
[root@test network-scripts]# ifconfig
bond0 Link encap:Ethernet HWaddr 08:00:27:3D:6D:C4
inet addr:192.168.2.100 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe3d:6dc4/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:448 errors:0 dropped:29 overruns:0 frame:0
TX packets:348 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:38157 (37.2 KiB) TX bytes:44557 (43.5 KiB)
eth0 Link encap:Ethernet HWaddr 08:00:27:6E:6D:78
inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe6e:6d78/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:248 errors:0 dropped:0 overruns:0 frame:0
TX packets:417 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:27391 (26.7 KiB) TX bytes:37846 (36.9 KiB)
eth1 Link encap:Ethernet HWaddr 08:00:27:3D:6D:C4
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:2723 errors:0 dropped:0 overruns:0 frame:0
TX packets:1854 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:245368 (239.6 KiB) TX bytes:232118 (226.6 KiB)
eth2 Link encap:Ethernet HWaddr 08:00:27:3D:6D:C4
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:129 errors:0 dropped:29 overruns:0 frame:0
TX packets:114 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:9081 (8.8 KiB) TX bytes:26200 (25.5 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:86 errors:0 dropped:0 overruns:0 frame:0
TX packets:86 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:8328 (8.1 KiB) TX bytes:8328 (8.1 KiB)
[root@test network-scripts]#
View Mac address
[root@test ~]# ifconfig | grep HWaddr bond0 Link encap:Ethernet HWaddr 08:00:27:3D:6D:C4 eth0 Link encap:Ethernet HWaddr 08:00:27:6E:6D:78 eth1 Link encap:Ethernet HWaddr 08:00:27:3D:6D:C4 eth2 Link encap:Ethernet HWaddr 08:00:27:3D:6D:C4 [root@test ~]#
END