网桥

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我是靠谱客的博主敏感山水，最近开发中收集的这篇文章主要介绍网桥，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

搭建网桥之前：

[root@foundation42 Desktop]# rht-vmctl poweroff desktop ####关掉虚拟机

[root@foundation42 Desktop]# cd /etc/sysconfig/network-scripts/

[root@foundation42 network-scripts]# mv ifcfg-br0 ifcfg-enp0s25 /mnt/ ####备份br0
[root@foundation42 network-scripts]# nm-connection-editor ####删掉system enp0s25 和 bridge enp0s25
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.

** (nm-connection-editor:5872): WARNING **: Unsupported connection type 'generic'

** (nm-connection-editor:5872): WARNING **: Unsupported connection type 'generic'
[root@foundation42 network-scripts]# vim ifcfg-enp0s25 ####编写配置
DEVICE=enp0s25
ONBOOT=yes
BOOTPROTO=none
IPADDR=172.25.254.42

NETMASK=255.255.255.0

[root@foundation42 network-scripts]# systemctl stop NetworkManager.service ###关掉服务
[root@foundation42 network-scripts]# systemctl restart network ####重启网络

[root@foundation42 network-scripts]# ls

在控制台去安装虚拟机，安装速度很慢

---------------------网桥--------------------

网络桥接：实现共享上网主机和客户机的的可利用软件，还可以用系统自带的网络桥建立连接用双网卡的做主机

真实主机中
[root@foundation42 ~]# cd /etc/sysconfig/network-scripts/
[root@foundation42 network-scripts]# vim ifcfg-enp0s25
DEVICE=enp0s25        ####设备名称
ONBOOT=yes           ####开启服务设备自动激活
BOOTPROTO=none     ####网卡工作状态

BRIDGE=br0 ####网卡开启的网桥接口

[root@foundation42 network-scripts]# vim ifcfg-br0
DEVICE=br0
ONBOOT=yes
BOOTPROTO=none
IPADDR=172.25.254.42
NETMASK=255.255.255.0

TYPE=Bridge ####网络接口类型是桥接

[root@foundation42 network-scripts]# systemctl stop NetworkManager.service   ####服务用来记录网卡位置，关闭此服务
[root@foundation42 network-scripts]# systemctl restart network   ####重启网络
[root@foundation42 network-scripts]# systemctl start NetworkManager.service     ####重启服务
[root@foundation42 network-scripts]# ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
        inet 172.25.254.42 netmask 255.255.255.0 broadcast 172.25.254.255
        inet6 fe80::221:ccff:feb8:6c5d prefixlen 64 scopeid 0x20<link>
        ether 00:21:cc:b8:6c:5d txqueuelen 0 (Ethernet)
        RX packets 40 bytes 4311 (4.2 KiB)
        RX errors 0 dropped 0 overruns 0 frame 0
        TX packets 24 bytes 3144 (3.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

再次在控制台去安装虚拟机，安装速度明显加快

命令管理方式

虚拟主机中
1.添加：
nm-connection-editor ###删除team0
systemctl stop NetworkManager.service   ####服务用来记录网卡位置
brctl show       ####显示网桥
brctl addbr br0   ###添加网桥
brctl addif br0 eth0   ####添加网桥的物理接口eth0
ifconfig eth0 up         ####开启接口
ifconfig br0 172.25.254.142 netmask 255.255.255.0   ####配置br0
brctl show                      ####显示网桥

ping 172.25.254.250 ####查看网络状态