Forcible reclamation?

[Paul Ferguson]

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.
>