RE: [saad] About saad
"Michel Py" <michel@arneill-py.sacramento.ca.us> Thu, 16 October 2003 01:06 UTC
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Subject: RE: [saad] About saad
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From: Michel Py <michel@arneill-py.sacramento.ca.us>
To: Geoff Huston <gih@telstra.net>, saad@ietf.org
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Marcelo / Geoff, > marcelo bagnulo wrote: > I don't think that the discussion should be focused on IPv6 > only a priori. > Geoff Huston wrote: > For me this area of consideration is somewhat orthogonal to > the V4 / V6 considerations. That's fine by me, but then we do have some work with the about text: > We have specified an Internet that works, at the network > layer, using relatively stable but not permanent identifiers > for connection endpoints, which are allocated and > administered using a topology dependent model, implying a > service provider dependent model For IPv4 this is untrue, as PI addresses are not allocated using a topology dependent model and do not imply a server provider dependant model. > But we run into problems (the architecture doesn't quite > fit when we try to address some scenarios encountered in > real life: multihoming Untrue for IPv4. The issue with IPv4 multihoming is a scalability issue: the growth of the routing table (resulting in part from the announcement of multihomed blocks) induces instability, which is not good. Possibly, a protocol other than BGP4+ would have a lot less of a scalability issue, so I don't consider this an architecture issue. > assembling a local network without necessarily having to contact > an ISP to obtain address space(e.g.,home net) Not a problem with IPv4: we have RFC1918. > Some proposed solutions are challenged in terms of: > providing referential integrity - how is referential > integrity maintained when identifiers are not globally > unique or are overloaded? The answer to this is simple: either make the identifiers globally unique, or manage that ambiguous identifiers never collide (or make the collision risk extremely slow). > choosing between different identifiers for an object ^^^^^^^^^^^ > which has different "reachability" and the reachability > is context-dependent Shouldn't "identifiers" above be "locators"? I vaguely assume that an object can have multiple locators but should have only one identifier. Michel. _______________________________________________ Saad mailing list Saad@ietf.org https://www1.ietf.org/mailman/listinfo/saad
- Re: [saad] About saad Geoff Huston
- RE: [saad] About saad Michel Py
- Re: [saad] About saad James Kempf
- [saad] About saad Michel Py
- RE: [saad] About saad marcelo bagnulo
- RE: [saad] About saad Michel Py
- RE: [saad] About saad J. Noel Chiappa
- Re: [saad] About saad James Kempf
- RE: [saad] About saad Michel Py
- Re: [saad] About saad Fred Baker
- Re: [saad] About saad Brian E Carpenter
- Re: [saad] About saad James Kempf
- RE: [saad] About saad Michel Py
- Why Scopes? (was: Re: [saad] About saad) James Kempf
- Re: [saad] About saad Fred Baker
- Re: Why Scopes? (was: Re: [saad] About saad) Melinda Shore
- Re: [saad] About saad Dave Crocker
- Re: [saad] About saad James Kempf
- Re: [saad] About saad Dave Crocker
- Re: Why Scopes? (was: Re: [saad] About saad) James Kempf
- RE: [saad] About saad Michel Py
- Re: Why Scopes? (was: Re: [saad] About saad) Melinda Shore
- Re: [saad] About saad Stephane Bortzmeyer
- Re: [saad] About saad Erik Nordmark
- Re: [saad] About saad Brian E Carpenter