RADB is largely meaningless, in terms of authorization or authority to advertise. However, if you have a properly delegated SWIP entry for the block, few providers will request LOA. Those who do, should probably be avoided. I still like the idea of using the DNS system for this, since there are already authoritative reverse delegations. (i.e. AS to IP block mapping) - Daniel Golding
On Thu, 18 Jul 2002, Ralph Doncaster wrote:
And your suggestion has technical deficiencies as well. I have a leased line between Toronto and Ottawa, so I want to announce my Ottawa IPs to my Toronto transit provider as well as an Ottawa transit provider. And the reverse for the Toronto IPs. My understand is trying to punch holes in PA space is much more difficult than de-aggregating ARIN PI space.
I can't really see why, as long as the provider has punched the appropriate hole for your aggregate in their filters. More specific routes always win out. Or am I missing your point?
If the block isn't assigned to you by ARIN, I've encountered cases where network operators request an LOA before accepting the announcement, even if there is an RADB entry for it. As well, if you have PA space and your upstream allocates you a 66.x for example, then you're back to square one.
-Ralph