Re: [Sipping] P2P why not multicast DNS for discovery?

["Samuel Osorio Calvo" <samuel.osorio at nl.thalesgroup.com>]

As far as I know there are two drafts which covers the multicast
approach for name resolution:
*draft-cheshire-dnsext-multicastdns-04.txt
*draft-ietf-dnsext-mdns-33.txt

I read them quite a long ago so correct me if they have been updated or
deprecated. They would need to be adapted to a large network, such as a
complete VoIP world-wide network, but they could be used as an
alternative for the "classical" DNS if a central resolver is not
reachable or even for small communities as the use cases proposed here
(ad-hoc chat, firemen without external connectivity).

Moreover mDNS can be easily interoperable with existing DNS UAs so the
adaptation of mDNS would solve some use cases with "little" changes in
the UAs since they must be aware of their identity and react if somebody
ask for it. It is therefore not required a full implementation of an
underlying DHT mechanism.

Corrections? Thoughts??






Samuel Osorio Calvo
Phone: (+31) 35 5248126

THALES Communications
P.O. Box 88, 1270 AB  Huizen, The Netherlands
Bestevaer 46, 1271 ZA  Huizen, The Netherlands

Unclassified

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