Re: RE: [DNA] L2 link and L3 link

[Gregory Daley <Greg.Daley@eng.monash.edu.au>]

Hi Alper, 

----- Original Message -----
From: Alper Yegin <alper.yegin@samsung.com>
Date: Friday, February 27, 2004 3:20 pm
Subject: RE: [DNA] L2 link and L3 link

> Greg,
> 
> > As an aside, It's interesting that Bernard mentioned PPPoE.
> > 
> > PPPoE is inherently an L2 mechanism but defined by IETF.
> > 
> > Do L3 DNA procedures apply here?
> > 
> > It may be that there's no L3 router advertised on the 'Ethernet'
> > link. So existing router discovery procedures don't necessarily
> > apply.
> > 
> > Should we rely on PADI messages to determine reachability,
> > and then provide (authoritative) link hints when IP6CP
> > has gone to open state?
> 
> When PPP is used, usually the IP address is configured as part of the
> link establishment. In that case, as soon as link is up, there isn't
> really much left for DNA to worry about. Please see the dna-l2-hints
> draft. We covered this with the 3gpp2 architecture.

I agree that this is most of what we need to do.

Checking upper layer connectivity may be 
valuable though, but not on the critical path.

Greg