我们将在一组连接上设置桥接网络接口。

准备工作

我们使用RHEL 7.1虚拟机，该虚拟机具有我们之前配置的成组接口。

# nmcli c
NAME     UUID                                  TYPE            DEVICE
slave2   eabb15cc-2bb7-4fc1-a52f-47268137cb09  802-3-ethernet  enp0s8
slave1   6d420cc6-cba4-4561-b9ae-17af025987ce  802-3-ethernet  enp0s17
myteam0  9691a92f-03dc-48b2-951d-a2b73721f8bc  team            myteam0

# ip ad
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp0s8: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master myteam0 state UP qlen 1000
    link/ether 08:00:27:ff:72:02 brd ff:ff:ff:ff:ff:ff
3: enp0s17: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master myteam0 state UP qlen 1000
    link/ether 08:00:27:ff:72:02 brd ff:ff:ff:ff:ff:ff
4: myteam0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
    link/ether 08:00:27:ff:72:02 brd ff:ff:ff:ff:ff:ff
    inet 10.8.8.72/24 brd 10.8.8.255 scope global myteam0
       valid_lft forever preferred_lft forever
    inet6 fc00::a:b:c:72/64 scope global
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:feff:7202/64 scope link
       valid_lft forever preferred_lft forever

配置软件桥

请注意，我们使用控制台而不是安全shell（SSH）。
如果我们配置不正确，则网络连接可能并且很可能会被丢弃。

安装bridge-utils软件包：

# yum install -y bridge-utils

添加一个新的mybr0连接：

# nmcli c add type bridge con-name mybr0 ifname mybr0

修改新创建的mybr0连接以匹配我们的配置（请参阅成组的IP等配置）：

# nmcli c mod mybr0 ipv4.method manual ipv6.method manual \
  ipv4.addresses 10.8.8.72/24 ipv4.gateway 10.8.8.70 \
  ipv4.dns 10.8.8.70 ipv6.addresses fc00::a:b:c:72/64 \
  bridge.stp no

检查确认：

# nmcli c
NAME     UUID                                  TYPE            DEVICE
slave2   eabb15cc-2bb7-4fc1-a52f-47268137cb09  802-3-ethernet  enp0s8
slave1   6d420cc6-cba4-4561-b9ae-17af025987ce  802-3-ethernet  enp0s17
myteam0  9691a92f-03dc-48b2-951d-a2b73721f8bc  team            myteam0
mybr0    558eb416-de58-4b44-a545-8959cdc81e66  bridge          mybr0

改成：

# cd /etc/sysconfig/network-scripts/

打开“ ifcfg-myteam0”进行编辑。
在文件末尾添加以下行：

BRIDGE=mybr0

还要删除IP地址配置，因为它已经在网桥上设置了。
我们可以使用sed：

# sed -i '/IPADDR/d;/PREFIX/d;/GATEWAY/d;/DNS/d;/IPV6ADDR/d' ./ifcfg-myteam0

在桥接接口上禁用DAD：

# echo "net.ipv6.conf.mybr0.accept_dad=0" >>/etc/sysctl.d/dad.conf
# sysctl -w net.ipv6.conf.mybr0.accept_dad=0

网络管理器不支持绑定或者成组的接口上的网桥：

# systemctl disable NetworkManager && systemctl stop NetworkManager

网络服务应启动并启用：

# systemctl enable network && systemctl restart network

检查确认：

# brctl show
bridge name     bridge id               STP enabled     interfaces
mybr0           8000.080027ff7201       no              myteam0

# ip ad
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp0s8: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master myteam0 state UP qlen 1000
    link/ether 08:00:27:ff:72:01 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:feff:7201/64 scope link
       valid_lft forever preferred_lft forever
3: enp0s17: <BROADCAST,MULTICAST,PROMISC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master myteam0 state UP qlen 1000
    link/ether 08:00:27:ff:72:01 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:feff:7201/64 scope link
       valid_lft forever preferred_lft forever
6: myteam0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master mybr0 state UP
    link/ether 08:00:27:ff:72:01 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::a00:27ff:feff:7201/64 scope link
       valid_lft forever preferred_lft forever
7: mybr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
    link/ether 08:00:27:ff:72:01 brd ff:ff:ff:ff:ff:ff
    inet 10.8.8.72/24 brd 10.8.8.255 scope global mybr0
       valid_lft forever preferred_lft forever
    inet6 fc00::a:b:c:72/64 scope global
       valid_lft forever preferred_lft forever
    inet6 fe80::a00:27ff:feff:7201/64 scope link
       valid_lft forever preferred_lft forever