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How to check default router ip address?

Posted on 2011-03-10
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Last Modified: 2012-06-27
Hello, I am using linux and I would like to get the router's ip address my computer is connected with. I am using Ubuntu. I see that default gateway is 0.0.0.0.. I know my box's ip address and subnet mask.. How can I get the router address? Thanks!
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Question by:beer9
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6 Comments
 
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Merlinsmaster earned 100 total points
ID: 35105797
Beer9,

Have a look in these to file paths

Network Interfaces   (Ip address, subnet mask, gateway

cat /etc/network/interfaces

Other network information outside your interfaces

/etc/resolv.conf


See if what you are looking for is found there!

Let us know how you make out?

Michael

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by:upanwar
upanwar earned 100 total points
ID: 35105941
route -n is the command to get all the routes configured in your system. Here you will got your systems default route as well.


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by:omarfarid
omarfarid earned 100 total points
ID: 35106273
netstat -rn should show you your routing table which should show the default router ip
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by:Saikapian_4739
Saikapian_4739 earned 100 total points
ID: 35106541
Well you have your answer in your question only. Default router is nothing but the Default gateway only. What is default gateway, its the fisrt gateway that your system passes through to go on a network and default router is the router that is the router that acts as Primary for your system or infact for all systems in your network.

In most cases Default Router and Default Gateway are configured on the same device how ever in some cases it is possible that they are different devices.

Looking at your query, 0..0.0.0 is not a valid Gateway address also.
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by:Alberto Cortes
Alberto Cortes earned 100 total points
ID: 35113996
Answer:

There are two ways:
1. type the command netstat -rn, and look for the line with the flag UG. Column gateway should be your router.
2. Display the file /etc/sysconfig/network ,and look for the line GATEWAY=.
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Author Closing Comment

by:beer9
ID: 35154365
Thank you! :-)
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