Linux route Add Command Examples

by on February 7, 2008 · 23 comments· LAST UPDATED November 9, 2013

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I am a new Linux user. How do I add a new or default gateway using route command on Linux operating systems? How can I use route command to show or set a new route on Linux based server or desktop system?

You can use any one of the following tool to add, display, delete Linux kernel routing table:
Tutorial details
DifficultyEasy (rss)
Root privilegesYes
Estimated completion time5m

(a) route command : show / manipulate the IP routing table on Linux.

(b) ip command : show / manipulate routing, devices, policy routing and tunnels on Linux.

Display your current routing table

Open the Terminal or login to server using ssh/console. Type the following command to display routing table:
# route
# route -n
Sample outputs:

Fig.01: Display routing table using route command

Fig.01: Display routing table using route command

# ip route show
# ip route list
Sample outputs:
Fig.02: ip command in action

Fig.02: ip command in action

Linux add a default route using route command

Route all traffic via gateway connected via eth0 network interface:
# route add default gw eth0

Linux add a default gateway (route) using ip command

Route all traffic via gateway connected via eth0 network interface:
# ip route add dev eth0

Verify newly added route ip in the Linux kernel routing table

To verify new routing table, enter:
# ip route list
# route -n

Verify new route

Use the ping command to verify connectivity to your router or external network:
# ping your-router-ip-here
# ping your-ISPs-Gateway-ip-here
# ping
# ping

How do I make routing changes persistent across reboots?

To make route entry persistent in the Linux kernel routing table, you need to modify config file as per your Linux distributions.

RHEL/CentOS/Fedora/Scientific Linux persistent routing configuration

Edit /etc/sysconfig/network and set default gateway IP address:
# vi /etc/sysconfig/network
Sample outputs:


You can add additional static route for eth0 by editing /etc/sysconfig/network-scripts/route-eth0 file as follows: via

The above config sets static routing for network via router.

Debian / Ubuntu Linux persistence static routing configuration

Edit /etc/network/interfaces file, enter:
# vi /etc/network/interfaces
Append the following in eth0 section:

up route add -net netmask gw
down route del -net netmask gw

Save and close the file.

Generic method to add persistent static routing on Linux

The following method works with almost all Linux distributions.

Edit /etc/rc.d/rc.local or /etc/rc.local, enter
# vi /etc/rc.local
Append the following line:

/sbin/ip route add dev eth0

Save and close the file.

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{ 23 comments… read them below or add one }

1 Chris Jackson October 29, 2008 at 2:14 pm

Changes to survive a reboot can be set in

Other profiles for switching between different configurations can be found in


2 Momo February 14, 2009 at 6:23 am

Dear All,

I have a problem , my default route will go away when i reboot my system, regarding to this matter that all info was issued under interface network-script.

Please advice,


3 rajesh p February 25, 2015 at 4:44 am

add configuration file

vi /etc/sysconfig/network


4 sandheep February 23, 2009 at 9:15 am

Hi ,

Can you please let me know how to add the route command in Linux.



5 sunil sharma August 6, 2010 at 4:42 am

add the route command in linux

# route add -net ethx
Alternate is by ip command
# ip route add ethx
after that configure gateway,netmask and ip in route-ethx file located in /etc/sysconfig/network-scripts dir.



6 rajesh p February 25, 2015 at 4:45 am
route add -net NETMASK gw


7 amit kumar February 26, 2015 at 9:08 pm

it worked ..thanks


8 Prosper Mbabazi May 15, 2009 at 10:22 am

Adding the route command in Linux

Route traffic via gateway destined to :

route add -net netmask gw

This will handle all the traffice from your client systems destined to the subnet.
The resources that will be accessed are in the range –

I have tried it on Suse Linux, and i belive other flavors are similar or close to this .




9 Amal Withanage August 24, 2011 at 11:10 am

Thank you very much this works


10 Mr-lol July 30, 2009 at 9:28 am

To add default route for a host:
#route add gw
“where is destination host, gw commad to specify gateway and is the gateway to destination host. (Test on Feroda 11)”


11 Alex December 14, 2010 at 9:22 am

Another way to add route at startup (testing on CentOS)

edit file /etc/rc.d/rc.local (add to end of file your route):
/sbin/route add -net netmask gw

After reboot check your route table:


12 khamees April 30, 2012 at 8:27 am

Thanks Alex. You saved my day. On CentOS this was needed


13 Pankaj March 16, 2011 at 6:52 am

i want to add below command in Linux server.but here it is showing error

[root@plnotxsmsc01 rc.d]# route add -net gw
bash: route: command not found
[root@plnotxsmsc01 rc.d]#


[root@plnotxsmsc01 rc.d]# uname -a
Linux plnotxsmsc01 2.6.18-128.el5xen #1 SMP Wed Dec 17 12:01:40 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
[root@plnotxsmsc01 rc.d]#


14 Ranjith June 7, 2011 at 9:58 am

Dear Pankaj,

please try /sbin/route or locate where the route is


15 soroush May 2, 2012 at 4:17 am

route add -net netmask gw


16 soroush May 2, 2012 at 4:18 am

The routing information above is not persistent across reboots. After a reboot, the routing information will be lost and you need to add them in again.

To make the routing information persistent, add the “route add” line as seen above into the /etc/rc.local file.

Sample /etc/rc.local file.

# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don’t
# want to do the full Sys V style init stuff.
touch /var/lock/subsys/local
route add -net netmask gw


17 PauloCritchi June 27, 2012 at 2:23 pm

Yes Alex, your comment was also what I needed.

Thank you so much for that!



18 srinivas June 25, 2013 at 12:40 pm

how to find remote systems gateway with out login


19 sonali June 28, 2013 at 4:14 pm

i want to add below command in Linux server.but here it is showing error

[root@zmocmp1 sbin]# route add -net netmask gw
SIOCADDRT: Invalid argument
[root@zmocmp1 sbin]#

and how to make routing information persistent,


20 Bijay April 25, 2014 at 11:20 am

please assign valid gateway it will work….!!!


21 Rajashree April 22, 2014 at 5:54 am

I want to do ping6 to another linux machine..I added inet6 address in both the linux machine in the main LAN ping6 is not wrking. “Destination Unreachable is coming”. So,For that when i tried to add route to ipv6 thorough a gateway,using the command ” /sbin/route -A inet6 add 2000::/64 gw 2000:db8:0:bbbb::1 ” is is telling invalid command..pls help me with this and how can i rectify it.


22 Victor Juarez Cabrera April 28, 2014 at 4:22 pm

Muchas gracias me ayudo bastante, saludos desde México…


23 kamalkakkar June 6, 2014 at 6:48 am

awsome explanation!! love it


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