[arin-ppml] Q1 - ARIN address transfer policy

John Curran jcurran at istaff.org
Mon Jun 23 06:57:07 EDT 2008

At 11:14 AM +0100 6/23/08, <michael.dillon at bt.com> wrote:
> > The problem is that the mapping of EID to its locators is a
>> wide open research problem, with several alternatives being
>> explored but no definite answers.
>Sorry, but you're wrong on this point. This problem was solved years
>ago. The solution is called MPLS.

On a single network, or small set of loosely coordinated networks, sure.
The problem statement above is for a mechanism which scales to Internet-
wide scope (i.e. global dynamic LSP tunnels without any prior one-on-one
coordination), whereas work in the IETF MPLS wg is presently addressing
scaling issues just with within a single network of multiple IGP areas
(i.e. <draft-ietf-mpls-ldp-interarea-04.txt>).  MPLS is an answer to some
questions, but using it as global EID layer for the Internet would require
addressing some very tricky questions about large-scale, real-time dynamic
LSP establishment.  Whether such is more or less difficult to accomplish
than the current RRG work is a matter of perspective; feel free to write
it up if you think it is a viable solution.


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