Forcible reclamation?

What has this got to do with the issue of increasing the
address space, which was the topic at hand?

There's no disagreement that the two options below are
tenable.

- paul

At 11:43 AM 07/08/97 -0500, Stephen Sprunk wrote:

>Please explain how you can effectively aggregate at a level above the AS
>(assuming all ASes are multihomed).
>
>If an AS (either ISP or business) wishes to have BGP4 sessions with two
>distinct providers, they have two options:
>
>1. Get PI space and advertise it.  No special changes need to be made to
>   either provider.
>
>   Upside: Easy, Stable, Keeps aggregates whole
>   Downside: Burns PI space quickly, Requires intelligent registry policy
>
>2. Get PA space(s) from one provider and advertise it.  That provider must
>   also make special changes to not filter the more-specifics.
>
>   Upside: Lets registries coast with bad policies
>   Downside: Painful, Unstable, Punches holes in aggregates, Burns PA space
>
>Both options use the same number of routing table entries per allocation,
>and both will have the same number of IPs per allocation, so the issue is
>neither routers falling over nor running out of addresses.
>