linux双网卡双网关

本文参考了以下文章 http://longwind.blog.51cto.com/419072/806302

1.环境

eth0:192.168.6.2   网关192.168.6.1

eth1:192.168.7.2   网关192.168.7.1

centos5.7

2.配置网卡

vi /etc/sysconfig/network-scripts/ifcfg-eth0

IPADDR=192.168.6.2

NETMASK=255.255.255.0

GATEWAY=192.168.6.1

vi /etc/sysconfig/network-scripts/ifcfg-eth1

IPADDR=192.168.7.2

NETMASK=255.255.255.0

3.配置路由

vi /etc/iproute2/rt_tables 添加

252 tel

251 cnc

4.配置路由

ip route flush table tel

ip route add default via 192.168.6.1 dev eth0 src 192.168.6.2 table tel

ip rule add from 192.168.6.2 table tel

ip route flush table cnc

ip route add default via 192.168.7.1 dev eth1 src 192.168.7.2 table cnc

ip rule add from 192.168.7.2 table cnc

OK~可用将以上命令添加到/etc/rc.local里，这样重启后就不用重新添加了...