转载请注明出处： http://blog.csdn.net/zhangyang0402/archive/2010/06/25/5695050.aspx

 

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.