How to add routing in linux

How to add routing in Linux?

Methods to add routes under Linux:

1: Use the route command to add routes

Use the route command to add routes, restart the machine or The routing will become invalid after the network card is restarted. Method:

//添加到主机的路由 # route add –host 192.168.168.110 dev eth0 # route add –host 192.168.168.119 gw 192.168.168.1 //添加到网络的路由 # route add –net IP netmask MASK eth0 # route add –net IP netmask MASK gw IP # route add –net IP/24 eth1 //添加默认网关 # route add default gw IP //删除路由 # route del –host 192.168.168.110 dev eth0

2: Method to set up permanent routing under Linux:

1. Add

## in /etc/rc.local #Method:

route add -net 192.168.3.0/24 dev eth0 route add -net 192.168.2.0/24 gw 192.168.3.254

2. Add to the end of /etc/sysconfig/network

Method: GATEWAY=gw-ip or GATEWAY=gw-dev

3. /etc/sysconfig/static-router:

any net x.x.x.x/24 gw y.y.y.y

linux Add permanent static routing

Linux routing function:

# The route added by the route command will be lost after the machine is restarted or the network card is restarted. How to set a permanent route under Linux:

1. Add

in /etc/rc.local 2. Add

to the end of /etc/sysconfig/network 3./etc/sysconfig/static-router:

any net x.x.x.x/24 gw y.y.y.y

Enable IP forwarding:

# echo "1" >/proc/sys/net/ipv4/ip_forward (临时) # vi /etc/sysctl.conf --> net.ipv4.ip_forward=1 (永久开启)

Related recommendations: "

linux tutorial"

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