linux系统：
#netstat -r //查看路由表 （route也可以做到）
#route add -net 192.168.0.0 netmask 255.255.255.0 gateway 192.168.0.1 dev eth0
#route del -net 192.168.0.0 netmask 255.255.255.0 gateway 192.168.0.1 dev eth0
#traceroute *.*.*.* //追踪路由Linux
windows系统：
#route print //查看路由表
#route add 192.168.0.0 mask 255.255.255.0 gateway 192.168.0.1 metric 1
#route chang 192.168.0.0 mask 255.255.255.0 gateway *.*.*.* metric * //只能修改GW和metric
#route delete 192.168.0.0
#tracert *.*.*.* //追踪路由windows
