RE: [Fwd: [Saad] Some initiating thoughts...]

"Harrington, David" <dbh@enterasys.com> Wed, 29 October 2003 14:33 UTC

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Subject: RE: [Fwd: [Saad] Some initiating thoughts...]
Date: Wed, 29 Oct 2003 09:31:47 -0500
Message-ID: <6D745637A7E0F94DA070743C55CDA9BA0113950D@NHROCMBX1.ets.enterasys.com>
Thread-Topic: [Fwd: [Saad] Some initiating thoughts...]
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From: "Harrington, David" <dbh@enterasys.com>
To: "Brian E Carpenter" <brc@zurich.ibm.com>, <saad@ietf.org>
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Hi Brian,

I'm having difficulty understanding the use-case scenario. Can you
expand on a scenario when this would be needed so I can better grasp
your point?

Thanks,
dbh

> -----Original Message-----
> From: Brian E Carpenter [mailto:brc@zurich.ibm.com] 
> Sent: Wednesday, October 29, 2003 6:00 AM
> To: saad@ietf.org
> Subject: Re: [Fwd: [Saad] Some initiating thoughts...]
> 
> 
> Leslie Daigle wrote:
> > 
> > I posted this a few days ago -- before, I think, people had
> > a chance to get subscribed.  So, let me re-post it for
> > further discussion...
> 
> And I've been carrying the attached minor comment around for 
> two weeks...
> ...
> > 
> > 3.2.  Addressing Requirements of Enterprises
> ...
> > Some enterprises have addressing requirements caused by the 
> need to set
> > up inter-enterprise Virtual Private Networks (VPNs).  Also, at some
> > point in their existence most enterprises undergo some form 
> of merger or
> > acquisition, and discover that they need to merge internal 
> networks.  In
> > both these circumstances there is a requirement to avoid the need to
> > renumber or to suffer from ambiguous addressing resulting from the
> > merger of two private address spaces.
> 
> I think this misses another related requirement that may become very
> significant, in a future consisting of virtual organizations 
> and on-demand
> computing environments. It may often be required for a set of 
> enterprises
> to create a short-term "closed user group" of hosts that need 
> transparent
> (firewall-free) interconnection for a period of time; this is 
> like a dynamic
> merger followed some time later by a demerger. This is more 
> demanding on the
> addressing (and routing) architecture than relatively static 
> VPNs or one-time
> events like mergers.
> 
>    Brian
> 
> _______________________________________________
> Saad mailing list
> Saad@ietf.org
> https://www1.ietf.org/mailman/listinfo/saad
> 

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