Subject: [lisp] Query regarding draft-ietf-lisp-ms-10

From: Subinoy Das <[email-masked]>
Date: Wed, 14 Sep 2011 15:33:21 +0530 (IST)

Hi,

I am little bit confused about functionality of Map Resolver.

In section 2. Definition of Terms it says "the Map Resolver finds the
appropriate EID-to-RLOC mapping by consulting the distributed
mapping database system".

In section 4.4. Map Resolver Processing it says "A non-caching Map Resolver simply forwards the unencapsulated
Map-Request". Cashing Map Resolver also forwards Map-Request after changing RLOC and nounce.

So, what actually a Map Resolver does? It finds EID-to-RLOC mapping in database of just forward the request?

Also, in draft it says about distributed mapping database. Does that mean all Map Servers will update to a single distributed database system so that any Map Server can reply to Map Request?

Also, from the drafts it is not clear that if any single ETR can send Map Resister to multiple Map Server or not. And what happens if any Map Servers goes down? Is there any backup Map Server?

Regards,
Subinoy