Vladimir,
-----Original Message----- From: Vladimir A. Jakovenko [mailto:vovik@lucky.net] Sent: Wednesday, November 07, 2001 2:34 PM To: Koepp, Karsten Cc: 'nurani@ripe.net'; 'lir-wg@ripe.net' Subject: Re: FW: more specific routes in today reality
Nurani,
I was missing a RIPE NCC hostmaster statement to this e-mail. Sascha quoted a hostmaster. [..skipped..] <SNIP>
"- If PI is requested for multi-homing please explain why the second provider cannot route PA space as a more specific route (with the PA block holder adding a more specific route too)."
This was suggested from a RIPE NCC Hostmaster when sending a PI-space req. This looks a little contrary to your opinion doesn't it?
Sascha
Has this been a mistake, or is this the default answer to PI requests sent to the NCC nowadays? Is the NCC seriously going to recommend this to the members? I don't recommend the use of PI to customers either, and I don't want to roll up the multi-homing discussion. But PI should remain
On Wed, Nov 07, 2001 at 01:55:01PM +0100, Koepp, Karsten wrote: provider-
independent and PA should remain provider-aggregatable.
Quote from RFC1930, "Guidelines for creation, selection, and registration of an Autonomous System (AS)", page 7:
"With the introduction of aggregation it should be noted that a prefix may be represented as residing in more than one AS, however, this is very much the exception rather than the rule".
RFC1930 does not know PA or PI address categories, just routes.
Quote from RFC2725, "Routing Policy System Security", page 9:
"Route objects may exist for the same prefix with multiple origin AS values due to common multihoming practice that does not require a unique origin AS". RFC2725 does mention PI, but not the case where PA addresses are being multi-homed.
All I am saying is, regardless of whether we want this type of multi-homing or not, networks originating from different AS should use PI space. It does neither save a route nor address space to make pieces of a PA block multi-homed. It only binds the network to the provider assigning the PAs. That's why I was up-set. Still waiting for the NCC to answer... Karsten