Zeroconfig and Multicast DNS
Ian Smith
smithi at nimnet.asn.au
Thu Aug 24 06:38:32 UTC 2006
I've been watching this thread with great interest, having recently been
introduced to the possibilities of OLSR (net/olsrd) for local (and
beyond) P2P wi-mesh networks, and wondering if/how zeroconf fits in.
Some refs: My discovery point, a great (online) book found from a review
by Geoff Huston in the Internet Protocol Journal Vol 9 No 2, p44:
Wireless Networking in the Developing World: http://wndw.net/
OLSR.ORG: http://www.olsr.org/
RFC: http://ietf.org/rfc/rfc3626.txt (basis, though olsrd extends this)
Host addresses in such a MANET appear to require manual allocation so
far, usually in RFC1918 ranges, but the notion of zeroconfig-joining
such a network seems perhaps worthy of exploration?
Am I way off base here, thinking some matchmaking might be useful?
Cheers, Ian
On Wed, 23 Aug 2006, Pat Lashley wrote:
[..]
> Hmmm. Interesting routing problem. Basically, we need to prefer a route that
> doesn't use the LLA (unless the destination is in an LLA); but still handle the
> edge cases like having the default route be through an LLA-only-connected
> router. (Which MUST do NAT...)
> We also need to keep an eye towards dynamic roaming. One scenario is a campus
> composed of multiple Link Local zones and WiFi. As you move around the campus
> with your (running) laptop, it will have to re-negotiate/defend its LLA; and
> may need to obtain a different one. The address of the default router is also
> likely to change as it moves from one zone to another.
> Of course, in that scenario it doesn't matter whether you have any non-LLA IP
> addresses; since you won't be using them. BUT if you add in a mix of non-LLA
> addresses advertised as servers; the routing adjustments could become quite
> interesting...
>
> Some of the problems raised by roaming scenaria need not be addressed
> immediately; but we do need to keep them in mind during the design phase to
> ensure that our solution to the basic LLA/mDNS issues doesn't make the roaming
> issues even harder to handle.
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