# 网卡绑定模式
# mode=0 (balance-rr): 轮询模式，提供负载均衡和容错
# mode=1 (active-backup): 主备模式，只有一个网卡活动
# mode=2 (balance-xor): 基于MAC地址的负载均衡
# mode=3 (broadcast): 广播模式，所有网卡都发送数据
# mode=4 (802.3ad): LACP动态链路聚合
# mode=5 (balance-tlb): 发送负载均衡
# mode=6 (balance-alb): 发送和接收负载均衡

# 常用模式
# mode=1: 主备模式，适合高可用场景
# mode=4: LACP模式，需要交换机支持
# mode=6: 负载均衡模式，无需交换机配置

# 查看可用网卡
$ nmcli device status
DEVICE TYPE STATE CONNECTION
eth0 ethernet connected eth0
eth1 ethernet connected eth1
eth2 ethernet disconnected —
eth3 ethernet disconnected —
lo loopback unmanaged —

# 创建绑定接口
$ sudo nmcli connection add type bond \
con-name bond0 \
ifname bond0 \
mode active-backup

Connection ‘bond0’ (abc12345-1234-5678-90ab-cdef12345678) successfully added.

# 添加从属接口
$ sudo nmcli connection add type bond-slave \
con-name bond0-port1 \
ifname eth2 \
master bond0

Connection ‘bond0-port1’ (def23456-2345-6789-01bc-defg23456789) successfully added.

$ sudo nmcli connection add type bond-slave \
con-name bond0-port2 \
ifname eth3 \
master bond0

Connection ‘bond0-port2’ (efg34567-3456-7890-12cd-efgh34567890) successfully added.

# 配置绑定接口IP地址
$ sudo nmcli connection modify bond0 \
ip学习交流加群风哥QQ113257174v4.addresses 192.168.1.200/24 \
ipv4.gateway 192.168.1.1 \
ipv4.dns “8.8.8.8” \
ipv4.method manual

# 激活绑定接口
$ sudo nmcli connection up bond0-port1
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/10)

$ sudo nmcli connection up bond0-port2
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/11)

$ sudo nmcli connection up bond0
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/12)

# 查看绑定接口状态
$ ip addr show bond0
4: bond0: mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 08:00:27:ab:cd:ef brd ff:ff:ff:ff:ff:ff
inet 192.168.1.200/24 brd 192.168.1.255 scope global noprefixroute bond0
valid_lft forever preferred_lft forever
inet6 fe80::a00:27ff:feab:cdef/64 scope link
valid_lft forever preferred_lft forever

# 查看绑定详细信息
$ cat /proc/net/bonding/bond0
Ethernet更多学习教程公众号风哥教程itpux_com Channel Bonding Driver: v5.14.0-284.11.1.el9_2.x86_64

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth2
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eth2
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:12:34:56
Slave queue ID: 0

Slave Interface: eth3
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:ab:cd:ef
Slave queue ID: 0

# 查看连接状态
$ nmcli device status
DEVICE TYPE STATE CONNECTION
bond0 bond connected bond0
eth0 ethernet connected eth0
eth1 ethernet connected eth1
eth2 ethernet connected bond0-port1
eth3 ethernet connected bond0-port2
lo loopback unmanaged —

# 创建LACP绑定接口
$ sudo nmcli connection add type bond \
con-name bond1 \
ifname bond1 \
mode 802.3ad

Connection ‘bond1’ (fgh45678-4567-8901-23de-fghi45678901) successfully added.

# 配置LACP参数
$ sudo nmcli connection modify bond1 \
bond.options “mode=802.3ad,miimon=100,lacp_rate=fast,xmit_hash_policy=layer2+3”

# 添加从属接口
$ sudo nmcli connection add type bond-slave \
con-name bond1-port1 \
ifname eth4 \
master bond1

$ sudo nmcli connection add type bond-slave \
con-name bond1-port2 \
ifname eth5 \
master bond1

# 配置IP地址
$ sudo nmcli connection modify bond1 \
ipv4.addresses 192.168.2.100/24 \
ipv4.method manual

# 激活连接
$ sudo nmcli connection up bond1-port1
$ sudo nmcli connection up bond1-port2
$ sudo nmcli connection up bond1

# 验证LACP配置
$ cat /proc/net/bonding/bond1
Ethernet Channel Bonding Driver: v5.14.0-284.11.1.el9_2.x86_64

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2+3 (2)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: fast
Min links: 0
Aggregator selection policy (ad_select): stable
System priority: 65535
System MAC address: 08:00:27:ab:cd:ef
Active Aggregator Info:
Aggregator ID: 1
Number of ports: 2
Actor Key: 9
Partner Key: 1
Partner Mac Address: 00:11:22:33:44:55

Slave Interface: eth4
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:12:34:56
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0

Slave Interface: eth5
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:ab:cd:ef
Slave queue ID: 0
Aggregator ID: 1
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0

# 查看当前活动接口
$ cat /proc/net/bonding/bond0 | grep “Currently Active Slave”
Currently Active Slave: eth2

# 模拟接口故障
$ sudo ip link set eth2 down

# 查看切换后的活动接口
$ cat /proc/net/bonding/bond0 | grep “Currently Active Slave”
Currently Active Slave: eth3

# 查看故障计数
$ cat /proc/net/bonding/bond0 | grep “Link Failure Count”
Link Failure Count: 1
Link Failure Count: 0
from PG视频:www.itpux.com
# 恢复接口
$ sudo ip link set eth2 up

# 验证网络连通性
$ ping -c 3 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.更多视频教程www.fgedu.net.cn
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.521 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=0.489 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=0.512 ms

— 192.168.1.1 ping statistics —
3 packets transmitted, 3 received, 0% packet loss, time 2049ms
rtt min/avg/max/mdev = 0.489/0.507/0.521/0.013 ms