[Dime] Fw: Diameter Prefix Delegation Application

forwarding to dime list.

----- Forwarded Message ----
From: Behcet Sarikaya <behcetsarikaya@yahoo.com>
To: Glen Zorn <glenzorn@comcast.net>
Sent: Monday, June 16, 2008 10:36:49 AM
Subject: Re: [Dime] Diameter Prefix Delegation Application

Hi Glen,
  Prefixes are used to subnet a given network. The address assignment comes next based on the prefix. Subneting a network is done by the network administration/management. 
  draft-sarikaya-dime-prefix-delegation-ps suggests that AAA can be used in prefix delegation (from a delegating server to a requesting server) just like AAA is currently being used for address assignment.
  More details like per-MN prefix use in cellular links are in the draft.
Regards,

Behcet

----- Original Message ----
From: Glen Zorn <glenzorn@comcast.net>
To: Frank Xia <xiayangsong@huawei.com>
Cc: SpawnRR@gmx.de; dime@ietf.org; Jouni.korhonen@teliasonera.com
Sent: Sunday, June 15, 2008 2:48:15 AM
Subject: Re: [Dime] Diameter Prefix Delegation Application

Frank Xia [mailto:xiayangsong@huawei.com] writes:

> > Hi Frank,
> >
> > see inline,
> >
> > On Fri, Jun 13, 2008 at 5:58 PM, Frank Xia <xiayangsong@huawei.com>
> wrote:
> >> Hi Julien
> >>
> >> Thank for your comments!
> >>
> >> Just as IPv4 address management needs not only
> >> DHCPv4 solution but also AAA mechanisms,
> >> IPv6 prefix management as an extension of
> >> address mangement also needs  corresponding
> >> facilitis.
> >
> > we already have some facilities. That was the point of my mail.
> 
> Frank=>Diameter Prefix Delegation application  is a
> complementary not exclusive solution to
> the current existing facilitis.  It is useful for a variety of
> deployment
> scenarios which are possible beyond our reasoning imagination.
> 
> Here is my argument,  why do we need AAA solution for IPv4
> address management while there is a DHCP method?

What do you mean by "IPv4 address management"?  It is possible for both
RADIUS & Diameter to assign IPv4 addresses to user machines but that is
hardly "management" as I understand the term.  Are there other capabilities
of which I am unaware?

...

> A operator  wants to renumber it networks( although
> this is not a frequent practice). All the subscribers should
> replace their old prefixes by new advertised prefixes.

Just my point: Diameter is _not_ a general purpose network management
protocol & shouldn't become one.

> During renumbering time(a couple of hours or days),
> old application sessions continue using old IP addresses
> while new application sessions begin to use new IP addresses
> 
> The following are some references on renumbering.

The question isn't whether renumbering is a problem, it's if Diameter is the
right solution to that problem.  Just because you have a hammer doesn't mean
that everything is a nail :-)...

...

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