RE: [P2PSIP] HIP: optional, mandatory?

Interestingly, I was thinking p2psip is supposed to replace the
centralised systems in conventional SIP with an overlay network. So,
what role does HIP precisely play in achieving this goal? NAT
transversal? What then happens if the firewall decides block these
packets? Am I missing something here? Or is there going to be a future
proposal for conventional SIP to also support HIP?
IMHO, I will suggest that p2psip should be designed in such a way that
it can be easily extended to support any future plugins. At least
conventional SIP has the advantage of being highly extendable. Who ever
though SIP would be used to manage optical networks.

Regards,

Tola

-----Original Message-----
From: JiangXingFeng [mailto:jiang.x.f@huawei.com] 
Sent: 17 January 2008 07:20
To: 'David A. Bryan'; 'Cullen Jennings'
Cc: 'P2PSIP Mailing List'
Subject: RE: [P2PSIP] HIP: optional, mandatory?

> I want to be clear that I don't think this means we rule out having a
> HIP transport, but I think that if we say that we are going to wait
> for HIP to provide the complete underlying P2P fabric (peer protocol
> and all) that we use, we have things backwards -- that is what we are
> chartered here to provide. I also think it will be a long wait, since
> that particular work isn't chartered for P2P standards at the moment.
> I think deployment is critical here and sooner, rather than later. We
> need to be picking a direction and going with it very soon, not
> waiting for another group to deliver.

David, I fully agree with you. HIP has not been widely deployed and NAT
traversal, mobility and multihome are still developing. All in all, HIP
is
not mature enough to provide stable service for upper applications. 

On the other hand, the requirements from HIP-BONE as pointed out by
Gonzalo
should be considered while designing peer protocol. Fortunately, it is
not
hard to be met. Most of the existing proposals have taken modular
approach. 

Regards!
JiangXingFeng

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