RE: [DNA] Re: RS/RA Exchange

[Soliman Hesham <H.Soliman@flarion.com>]

 > You're right.
 > 
 > The link can be a physically distinct, or logically
 > distinct.
 > 
 > I think it would assume a preconfigured interface arrangement
 > between the access network's routers.
 > 
 > It's interesting, but not universally applicable to
 > access network scenarios.

=> ok, but also consider Bernard's comment on the fact
that APs are not necessarily pure bridges and that
they forward traffic selectively over the air to
associated nodes only. I thought that's how it worked
but I wasn't sure about existing products. 
Bernard's description also fits well with having IAPP.
So I don't think forwarding over the air is a major issue.



 > > => Ok, but even if that can happen, what harm is there
 > > in snooping? As long as the device cannot impersonate
 > > the router I don't see any harm in that. 
 > 
 > I don't mind this, in the case that there's not too
 > much traffic on the wireless link.
 > 
 > Alternatively, multicast snooping can be used to
 > help prevent the traffic going onto a wireless segment.
 > I'm not sure this is 'kosher' though.

=> Sure, but I think it's implemented in bridges. In 
fact the MLD spec is specifically designed to allow
bridges to snoop MLD and not treat multicast as broadcast.

Hesham