进入 vi /etc/sysconfig/network/routes
172.20.0.0 172.20.2.254 255.255.0.0 eth2
80.80.0.0 172.20.2.254 255.255.0.0 eth2
10.229.131.0 172.20.2.254 255.255.255.0 eth2
10.229.130.0 172.20.2.254 255.255.255.0 eth2
default 10.47.202.1 - -
原文：http://www.cnblogs.com/m317/p/6163924.html