千家信息网最后更新 2025年12月03日Linux 6.5 双网卡绑定
Linux双网卡绑定- 系统环境说明
操作系统：linux 6.5 Em1
网卡接口连接的是主交换机。 Em2
网卡接口连接的是备交换机。- 修改配置文件：
Vi /etc/modprobe.d/dist.conf
添加以下两行 alias bond0 bonding options bonding mode=1 miimon=100 常规可使用方式，在生产环境，我还是偏向使用了主备模式，保守一些。 mode=1
，代表的是主备模式。 mode=0
，平衡循环模式。 mode=6
，负载均衡模式。- 配置网卡文件
[root@testdb network-scripts]# cat ifcfg-em1 DEVICE=em1 TYPE=Ethernet ONBOOT=yes BOOTPROTO=static MASTER=bond0 SLAVE=yes [root@testdb network-scripts]# cat ifcfg-em2 DEVICE=em2 TYPE=Ethernet ONBOOT=yes BOOTPROTO=static MASTER=bond0 SLAVE=yes [root@testdb network-scripts]# cat ifcfg-bond0 DEVICE=bond0 BOOTPROTO=static IPADDR=192.168.88.101 NETMASK=255.255.255.0 GATEWAY=
192.168.88.1 ONBOOT=yes TYPE=Ethernet NM_CONTROLLED=no ----
此参数决定mac
地址，最好保持两个网卡一致。否则路由器识别识别失败。- 停止NetworkManager服务：
chkconfig NetworkManager off service NetworkManager stop modprobe bonding service network restart
最好重启一下系统。- 校验是否成功
Ifconfig -a bond0 Link encap:Ethernet HWaddr
44:A8:42:06:E1:C1 inet addr:
192.168.88.101 Bcast:15.21.72.255 Mask:255.255.255.0 inet6 addr: fe80::46a8:42ff:fe06:e1c1/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:185 errors:0 dropped:0 overruns:0 frame:0 TX packets:162 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:19774 (19.3 KiB) TX bytes:48110 (46.9 KiB) em1 Link encap:Ethernet HWaddr
44:A8:42:06:E1:C1 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:156 errors:0 dropped:0 overruns:0 frame:0 TX packets:162 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:16596 (16.2 KiB) TX bytes:48110 (46.9 KiB) Interrupt:35 em2 Link encap:Ethernet HWaddr
44:A8:42:06:E1:C1 UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1 RX packets:29 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3178 (3.1 KiB) TX bytes:0 (0.0 b) Interrupt:38
这里三个mac
地址是一致的。 [root@testdb ~]# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009) Bonding Mode: fault-tolerance (active-backup) Primary Slave: None Currently Active Slave: em1 MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: em1 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 44:a8:42:06:e1:c1 Slave queue ID: 0 Slave Interface: em2 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 44:a8:42:06:e1:c2 Slave queue ID: 0
- 测试是否可行
拔掉第一个接口，看是否能自动切换，然后再插回去，拔掉第二条线，看是否能来回切换成功。
