Re: [DNA] Re: RS/RA Exchange

[Brian Haberman <brian@innovationslab.net>]

Erik Nordmark wrote:

>>I'd guess that the ordering and selection issue is a generic one.
>>It would be good if we didn't re-invent solutions.
> 
> 
> There are protocols, like MLD and routing protocols, which elect some
> form of designated node (querier for MLD) but those protocols don't produce
> a full sorted list of all the routers on the link.
> I wonder if there is something here which could be reused.

So, I can dust off some "historic" code for this.  DVMRP has a HELLO
message like many other routing protocols.  But, DVMRP uses them to
announce reachability and discovery.  That is, peer routers on a link
look in the other routers' HELLO messages for their own addresses.
This allows them to determine when they have been "discovered" by
their peers.

Could we mimic this and have some type of announcement message that
a router would send out with all the other routers' addresses that
it has heard from?

Regards,
Brian