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

[Marshall Eubanks <marshall.eubanks at gmail.com>]

The Cheshire draft is available from 
http://www.multicastdns.org/
it is a by-product of ZeroConf work. As such, it requires ASM.

Is the " complete VoIP world-wide network" multicast enabled ? What
should be done if pieces
are not ? I can see real problems here is making this available
everywhere (i.e.,
multi-domain), with the current protocols.

Regards
Marshall Eubanks

On Mon, 07 Feb 2005 16:10:06 +0100, Samuel Osorio Calvo
<samuel.osorio at nl.thalesgroup.com> wrote:
> 
> 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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