Permanently add static routes under Linux

There are two ways to permanently add static routes under Linux:

To add a route command:

1,route add

Route add-net 192.56.76.0 netmask 255.255.255.0 dev eth0# Add a static route route add default GW 192.168.0.1# add route del-net 19 2.168.1.0/24 GW 192.168.0.1# Delete a route route-n# view the routing table

2,ip ro Add

IP ro add 192.56.76.0/24 dev 192.168.0.1# add a static route IP ro add default via 192.168.0.1 Dev eth0# add a route IP ro del 192.168.1.0/24 #删除一条路由ip Route show# View the routing table

Common parameters:

Add Add route

Del Delete route

Via Gateway egress IP Address

Dev Gateway Export Physical device name

The way to make way is still valid after restarting the server:

1, add inside the/etc/rc.local:

The Add route command is: Copy the command directly from the command line to the file and save the exit.

2, write inside the/etc/sysconfig/static-routes file:

If the file does not exist, it is created manually and the Add content format is:

Refer to the shell statement inside the/etc/init.d/network file:

                 # Add non interface-specific static-routes.                 if [ -f /etc/ sysconfig/static-routes ]; then                    grep  "^any"  /etc/sysconfig/static-routes |  while read ignore args ; do                    /sbin/route add -$args                  done                 fi 

If you want to add a static route, the command is:

Route add-net 192.56.76.0 netmask 255.255.255.0 Dev eth0

Then, in the/etc/sysconfig/static-routes file, add the format:

Any-net 192.56.76.0 netmask 255.255.255.0 Dev eth0

There are two ways to add a static route comparison:

1,rc.local:

Restart the server to take effect;

If the network service is restarted, the static route fails;

Rc.local is the last script that runs after the system starts, so this is not appropriate if the service Requirements for NFS require a network to be mounted;

2,static-routes:

Restart the server to take effect;

Restart the network service to take effect:

Suitable for services that require network requirements;

The way the script adds static routes and rc.local is pretty much the same:

This method is actually written in the script itself, placed at the beginning of/etc/rc3.d/set to S.

s means start, number is Order, K means stop.

Generally, startup is the boot order of a daemon in a pattern.

The smaller the number, the more forward the order of the boot;

/ETC/RC3.D is a text multi-user environment, the general production environment is this environment.

The downside is that it fails after restarting the network.

Summarize:

If you need to add static routes, add static routes to the/etc/sysconfig/static-routes file as much as possible. Avoid failure by restarting the network service, which prevents the routing from failing.

Permanently add static routes under Linux