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Re: PI vs PA Address Space
- From: Michael F. Nittmann
- Date: Fri May 19 20:25:47 1995
the proposal comes from a provider that cannot route around a cable cut
for now more than 24h.
Mike
On Fri, 19 May 1995 peter@swan.lanl.gov wrote:
>
> >>> As an aside, is anyone else besides Sprint behind this /18
> >>> model?
>
> The hard core /18 model ("we won't accept prefixes greater than length
> 18") is untenable and throws out one of CIDR's features. It does not
> allow for a time period where a customer is migrating from provider A
> to provider B and will have end systems living within both provider
> based prefixes at any instant during the migration.
>
> The user community should not be forced into flash cuts, and the
> providers can make the needed overlap period of time work for bounded
> time frames.
>
> At a minimum, the model needs to be /18+E (E==entropy due to customer
> migrations).
>
> peter
>
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Michael F. Nittmann nittmann@wis.com
Network Architect nittmann@b3.com
B3 Corporation, Marshfield, WI (CIX Member) (715) 387 1700 xt. 158
US Cyber (SM), Washington DC (715) 573 2448
(715) 831 7922
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