Re: [apops] Re: The Mandatory One Reply To This Weeks: The Cidr Report

[Joe Abley <jabley@automagic.org>]

On Thu, Mar 22, 2001 at 10:04:40AM -0800, Christian Nielsen wrote:
> On Thu, 22 Mar 2001, Joe Abley wrote:
> 
> > What we need is a consistent mechanism that can be implemented once
> > across ASes, and which will scale as external connectivity changes
> > without config truck-roll.
> 
> why should i allow other networks, peers, to have control of routing
> policy inside my network?

Most networks already give control of their routing policy to remote
networks, by virtue of longest-prefix wins.

> if you build a network that cant handle the amount of traffic you sell,
> dont expect me to carry your traffic.

Right; nobody is imposing a requirement on you to add complexity to
your network for people who are not your customers.

One way to take control of your network is to enforce Verio-style
allocation boundary filters. There is always the risk, though, that the
reduction in state in your network is not only going to strip the
edge policy that you don't want to see, but also connectivity
information that is going to wind up hurting your customers.

Any consistent approach to this would at least allow the long prefixes
which only convey edge policy to be handled according to the policy
you think is appropriate, without introducing blind spots.


Joe
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