# route add -net IP netmask 掩码 dev eth0
# route add -net IP netmask 掩码 gw 网关IP
# route add -net IP/24 dev eth1
# route add default gw IP
1、配置eth0的IP，同时激活设备:
# ifconfig eth0 192.168.4.1 netmask 255.255.255.0 up
2、激活（禁用）设备
# ifconfig eth0 up(down)
3、route命令指定路由
添加到主机路由
# route add –host 192.168.4.2 dev eth0:1
# route add –host 192.168.4.1 gw 192.168.4.250
删除到主机路由
# route del –host 192.168.4.2 dev eth0:1
# route del –host 192.168.4.1 gw 192.168.4.250
添加默认网关
# route add default gw 192.168.1.1
添加网络路由
route add -net 192.168.20.0 netmask 255.255.255.0 gw 192.168.10.1
查看路由状态
route -n
删除网络路由
route del -net 192.168.20.0 netmask 255.255.255.0
