Linux网关配置：

一、网络拓扑

二、配置网络

1．A,GW1,GW2,B的网络配置

A:

eth0:

IPADDR :192.168.1.2

NETMASK:255.255.255.0

GATEWAY:192.168.1.1

GW1:

eth0:

IPADDR :172.16.113.173

NETMASK:255.255.255.0

GATEWAY:172.16.113.9

eth1:

IPADDR :192.168.1.1

NETMASK:255.255.255.0

B:

eth0:

IPADDR :192.168.0.2

NETMASK:255.255.255.0

GATEWAY:192.168.0.1

GW2:

eth0:

IPADDR :172.16.113.163

NETMASK:255.255.255.0

GATEWAY:172.16.113.9

eth1:

IPADDR :192.168.0.1

NETMASK:255.255.255.0

2．GW1设置

(1)开启路由转发功能

# echo 1 > /proc/sys/net/ipv4/ip_forward

或

#vim /etc/sysctl.conf

net.ipv4.ip_forward = 0 --> net.ipv4.ip_forward = 1

(2)添加到192.168.0.0/24网段的路由

# route add -net 192.168.0.0 netmask 255.255.255.0 gw 172.16.113.163

3. GW2设置

(1)开启路由转发功能

# echo 1 > /proc/sys/net/ipv4/ip_forward

或

#vim /etc/sysctl.conf

net.ipv4.ip_forward = 0 --> net.ipv4.ip_forward = 1

(2)添加到192.168.1.0/24网段的路由

# route add -net 192.168.1.0 netmask 255.255.255.0 gw 172.16.113.173

三、测试网关

若A，B能相互ping通，则两个网关也配置成功了.