Re: [pcp] WG Call for Adoption: draft-tsou-pcp-natcoord-09

[Qiong <[e-mail]>]

Dear Dan,


Another question:  what is the relationship between draft-tsou-pcp-natcoord
> and draft-sun-dhc-port-set-option and draft-wu-dhc-port-set-option?  I
> saw there was a request to adopt draft-sun-dhc-port-set-option in DHC,
> and lots of discussion.
>
> I have not seen a discussion of using DHCP versus PCP for this
> functionality, which concluded that PCP was the better choice.  Did
> that discussion occur?  If so, can we get a pointer to that
> discussion?
>
[Qiong] For the relationship between draft-tsou-pcp-natcoord,
draft-sun-dhc-port-set-option and draft-wu-dhc-port-set-option,
draft-tsou-pcp-natcoord is a port-set extension for pcp-base and
draft-sun-dhc-port-set-option(updated version of
draft-wu-dhc-port-set-option ) is a port-set extension on dhcpv4. Both
draft-tsou-pcp-natcoord and draft-sun-dhc-port-set-option can work with
lightweight 4over6, but draft-tsou-pcp-natcoord is not only designed for
lw4over6 use case. It can also be used for other cases like Reinaldo's
firewall, SLNAT44, application-based port-set reservation, etc.

For lw4over6 use case, we do have a discussion of using DHCP or PCP among
lw4over6 co-authors (no much discussion in the mailing-list). But it's
truely hard to say which one is better. Different operators will have
different situations. For example, for operators with existing DHCP server
and is not planning to deploy CGN, they may prefer dhcp solution; while for
operators with no existing DHCP server and will deploy CGN in the early
stage, they may prefer pcp solution. So it is really a deployment choice
for them.

Hope it clarifies.

Best wishes
Qiong



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-- 
==============================================
Qiong Sun
China Telecom Beijing Research Institude


Open source code:
lightweight 4over6: *http://sourceforge.net/projects/laft6/*
PCP-natcoord:* http://sourceforge.net/projects/pcpportsetdemo/ *
===============================================