Speaking as a WG member, I really don't see this hybrid interface optimization 
as conflicting with the problem space covered by the MANET draft. 
Thanks,
Acee 
On Feb 10, 2011, at 6:29 PM, Nischal Sheth wrote:

> On 1/6/2011 2:26 PM, Alvaro Retana (aretana) wrote:
> 
>> You don't need to implement everything in the rfc to support the
>> interface functionality.  Most of the work in the rfc is oriented at
>> reducing the overhead on the wire (Incremental Hellos, Smart Peering) or
>> at addressing the cases where not all the nodes are visible (Overlapping
>> Relays).
>> 
>> If you don't care about reducing the overhead and can guarantee that all
>> the nodes are visible, then the interface definition is enough. ;-)
>> That reduces to taking advantage of the broadcast characteristics for
>> flooding, but using p2p adjacencies -- which would be a lot easier to
>> operate because it is clearer what the relationship between the peers
>> w/the different metrics is.
>> 
>> In my mind the problem in your document is already solved.
>> 
> 
> Hi Alvaro,
> 
> If one were to use just the interface definition, we would end up with a 
> full mesh of adjacencies between all routers on the broadcast network.
> This is less desirable compared to the hybrid interface which requires 
> adjacencies only to the DR/BDR.
> 
> One would need to implement Smart Peering in order to reduce the number 
> of adjacencies on the MANET interface.  However, doing so would result 
> in suboptimal routing unless you implement Unsynchronized Adjacencies.
> Finally, Unsynchronized Adjacencies requires a protocol extension which 
> is defined only for OSPFv3.
> 
> Based on the points above, I don't consider the MANET Interface to be a 
> true superset of the hybrid interface to solve the problem at hand.
> 
> -Nischal
> 

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