Re: BGP Question - how do work around pigheaded ISPs

[Roy <garlic () garlic com>]

Never mind corporate changes, why should an allocatee not subdivide their space
among their operating units or sites?

To answer your specific question, all of the ones I have seen, the space has been
divided on ARIN allocation boundaries.

Roy Engehausen


Bill Nickless wrote:

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> The question seems (in my opinion) to be whether registries are delegating
> netblocks that can be further subdivided, or not.
>
> That is, some ISPs hold that if a registry has allocated /16s in some
> space, those allocations should not be subdivided by the allocatees.  If a
> registry is allocating /19s minimum in some other space, then the
> allocatees cannot and should not split that space and advertise longer
> prefixes.
>
> In practice, how have corporate divestitures been handled by the
> registries?  Have organizations with portable netblocks been able to split
> them up and get new allocations from the registries, following the
> corporate reorganizations?
>
> Surely someone on this list has worked through such an event.  How did it go?
> ===
> Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252 7390
> PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74 F7     nickless () mcs anl gov
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