Re: [Fwd: [Saad] Some initiating thoughts...]
Brian E Carpenter <brc@zurich.ibm.com> Wed, 29 October 2003 16:36 UTC
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Date: Wed, 29 Oct 2003 17:33:45 +0100
From: Brian E Carpenter <brc@zurich.ibm.com>
Organization: IBM
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To: "Harrington, David" <dbh@enterasys.com>
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Subject: Re: [Fwd: [Saad] Some initiating thoughts...]
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David, Virtual organizations are a fundamental feature of grid computing. A group of users scattered around a selection of sites come together to tackle a particular problem during a particular period of time. (In existing grids it would typically be a particular computational scientific problem.) During that time they pool their resources across organizations and these resources (servers, storage, etc) need to communicate transparently among themselves as if they were a single physical site, separate from their normal organizational affiliation (i.e. NATs and firewalls are a big barrier, so today's addressing and security model is a problem). You could conceive this as a set of VPN connnections but that is a clumsy way to actually implement it. There is some discussion of virtual organizations at https://forge.gridforum.org/docman2/ViewProperties.php?group_id=42&document_content_id=919 Brian "Harrington, David" wrote: > > 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
- [Saad] Some initiating thoughts... Leslie Daigle
- [Fwd: [Saad] Some initiating thoughts...] Leslie Daigle
- RE: [Fwd: [Saad] Some initiating thoughts...] Michel Py
- Re: [Fwd: [Saad] Some initiating thoughts...] J. Noel Chiappa
- Re: [Fwd: [Saad] Some initiating thoughts...] Erik Nordmark
- Re: [Fwd: [Saad] Some initiating thoughts...] Melinda Shore
- Re: [Fwd: [Saad] Some initiating thoughts...] James Kempf
- Re: [Fwd: [Saad] Some initiating thoughts...] Erik Nordmark
- RE: [Fwd: [Saad] Some initiating thoughts...] Harrington, David
- Re: [Fwd: [Saad] Some initiating thoughts...] Melinda Shore
- RE: [Fwd: [Saad] Some initiating thoughts...] Erik Nordmark
- Re: [Fwd: [Saad] Some initiating thoughts...] Pekka Savola
- Re: [Fwd: [Saad] Some initiating thoughts...] Brian E Carpenter
- RE: [Fwd: [Saad] Some initiating thoughts...] Harrington, David
- Re: [Fwd: [Saad] Some initiating thoughts...] Brian E Carpenter