Re: [mpls-linux-general] Routing Table Changes

[Abhijit G. <gab...@ee...>]

Well,

If you want to check how routing updates are done to the kernel, look
through the sources of iproute2 package, which i think you must have done
already. The mechanism is based on netlink sockets. Look at

http://qos.ittc.ukans.edu/netlink/html/

for internals of Netlink sockets.

If you want to add some information to the kernel routing table. Please
ensure that whether it does not exist? As far as I know the kernel routing
implementation is quite exaustive. So a job of modifying it is certainly
non-trivial (and in most cases unnecessary.). There is a file in the
Documentation directory called networking/routing.txt . You can read that
to see what exactly is supported.

-abhijit

kanwardeep singh wrote :

>Hi All,
> We are doing a project which reqiures us to make a
>small network of PCs (linux 7.1), where each is
>behaving as a router.
> We then 've to implement MPLS network over this. What
>we want is..
> When network turns up all the router ard able to
>share their routing information (Dynamically)
> with each other. We've read that Linux uses "routed"
>deamon for this process, which in turn follows RIP,
>for
> dynamic routing. Till here its Ok... The problem is
>that we want to change the way routing
> informatio is stored in Linux kernel (i.e. we want to
>make some changes in routing tabel, by adding
> some more information to it, which is passed on by
>us)
> Can anyone tell us how is it possible, to modify
>existing routing table at runtime.
> Or can anyone tell which .c or .h files are
>responsible for calculation of routing table so that
> we can incorporate our changes in those files.
> Thanks in advance,
> Regards,
> Kanwar.
>
>
>
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