Re: [mpls-linux-general] Does MPLS have some limitations?

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

>Hi,All
>  I have read several documents about MPLS,and I have
>worked some implementation about it.But I still have
>some questions to be clarified.
>
>  1. Does MPLS have some shortcomings?Almost in all of
>the documents about MPLS,what we can see is the
>advantages of MPLS.Is the MPLS so perfect?

Well, nothing in the world is free. So the advantages of MPLS do come at
some cost, viz. Control overhead etc.

>  2. If MPLS is excellent,why it has not been
>popularized? Why it has not replace the IP and ATM
>technology?
>
I am afraid MPLS is not supposed to replace IP and ATM, It is intended at
a healthy marriage between these two network layer technologies. But its
still in very early stages (shd I say so?) of deployment.

Please read Rekhtar's or Eric Gray's book on MPLS to give u a better idea
of how MPLS evolved.

-abhijit