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RE: GSE IDs [Re: IETF multihoming powder: just add IPv6 and stir]
I would prefer that we avoided having a stateful mapping mechanism.
It's unnecessary and certainly more complication than we need.
I would also prefer that we not proclaim something to be GSE that
isn't, regardless of congruence or continuation of ideas. GSE
is a specific idea and while it can certainly evolve, I think it's
a disservice to mo to re-use his name for something else
without his permission.
| -----Original Message-----
| From: Iljitsch van Beijnum [mailto:email@example.com]
| Sent: Thursday, May 08, 2003 3:33 AM
| To: Brian E Carpenter
| Cc: firstname.lastname@example.org
| Subject: Re: GSE IDs [Re: IETF multihoming powder: just
| add IPv6 and stir]
| On donderdag, mei 8, 2003, at 11:50 Europe/Amsterdam,
| Brian E Carpenter
| >>> and it involves stateful distribution of mapping
| information. A very
| >>> different beast from GSE, and it sets off my
| stateful=bad alarm.
| >> Actually this wouldn't be a problem at all since we
| have to keep this
| >> exact same state anyway in order to map the other way around for
| >> sending packets back.
| > Again, not in GSE as I understand it.
| I don't think it's a coincidence that there hasn't been
| any progress
| with GSE for five years or so. In theory, GSE can work without a
| mapping mechanism, but this opens the door to security
| problems. So in
| practice we need to keep state to know whether there is a
| valid locator
| <-> identifier mapping to avoid trivial identity theft. And if we
| accept that, we may as well remove the whole globally
| unique lower 64
| bit thing as it just breaks too much stuff without any
| real benefits at
| this point.
| Aside from that, not having a mapping mechanism makes
| failover very
| difficult: the only way that still works is if the border
| router at the
| source sees the problem. This works for last mile
| problems, but not for
| routing problems further upstream. I know others have different
| experiences, but for me routing problems are the number
| one cause of
| Is there anyone who wants to stick with GSE without a
| mapping mechanism?