Re: Delete all and replace is practical

On Jan 29, 2004, at 3:45 PM, Hallam-Baker, Phillip wrote:
> One of the things that has consistently failed in the traditional 
> legacy
> infrastructure has been upgrading old protocols.

I look to the BITNET model here. The two protocols don't cleanly 
interoperate, but work via gateways.

The incentive to upgrade comes from, among other things, gateways 
increasingly adding artificial delays into gateway transfers, reducing 
the immediacy of delivery, and eventually decomissioning, forcing the 
issue. You allow for the transition, but you don't allow it to carry 
forward forever.

Of course, it's unlikely we'd be able to finish the migration until 
after IPV6 is complete.