Multiple networks connected.Which is considered?

Question

Suppose i am connected to two networks-

2.Mobile broadband.

Which one will be considered as the base one and will be used??

Because both do get connected at the same time..!!

Shah · Accepted Answer · 2012-05-19 16:44:46Z

The one with a 'better' gateway metric will be chosen. To find out which one it is, open terminal and type this:

route -n

I see that I have a gateway with metric 0.0.0.0:

0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0

So eth0 is my preferred adapter.

Another (probably easier) way to find out is to look at the route to Google's DNS server (8.8.8.8)

ip route get 8.8.8.8

This is my output:

8.8.8.8 via 192.168.0.1 dev eth0  src 192.168.0.2 
    cache

You can see that it is going via eth0. Try this on your machine and have a look at the results.

Thanx a lot..!! This Question was storming my brains from long...!! Also,is there absolutely no way that the connection is shared by both connections?? So that bandwidth increases?? i read a post already here...but just asking that is there absolutely no way to do it??
There is a way to do it, it's referred to as NIC Bonding (I think it has many other synonyms). I've never done it but there's a help page on the Ubuntu Help Wiki: help.ubuntu.com/community/UbuntuBonding

1 Answer