Re: Route optimization using GPUs?

[Ryan Hamel <ryan () rkhtech org>]

Bill,

While that sounds plausible on paper, keep in mind it will also include IX route servers and MPLS route reflectors.

Noction can append communities to its announcements, meaning one can very easily set NO_EXPORT (65535:65281) and/or a 
community applicable to the AS. The latter going back to what I said about matching a community on export policies to 
carriers/IX/PNIs, to drop them if the network vendor has a bug in NO_EXPORT, like 
https://quickview.cloudapps.cisco.com/quickview/bug/CSCuv94859.

Ryan Hamel


________________________________
From: William Herrin <bill () herrin us>
Sent: Thursday, December 5, 2024 3:58 PM
To: Ryan Hamel <ryan () rkhtech org>
Cc: nanog () nanog org <nanog () nanog org>
Subject: Re: Route optimization using GPUs?

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On Thu, Dec 5, 2024 at 2:34 PM Ryan Hamel <ryan () rkhtech org> wrote:
> This same thing also applies to operators of route optimizers. They
> are responsible for writing the correct import/export policies for their
> network, just like the carriers for writing sane policies for customer circuits

Hi Ryan,

Is there room or use for standards work here? Just spitballing, but
something along the lines of:

A synthetic BGP route is a BGP route produced by an AS other than the
original origin of the IP addresses contained. Examples include
default routes, black-hole routes and routes produced by a route
optimizer in a middle network.

The producer of a synthetic BGP route MUST mark the route with community XXX.
Routers MUST NOT remove the synthetic community XXX from a route.
Synthetic routes learned from EBGP sessions MUST be rejected by
default. Routers MAY accept synthetic routes learned from EBGP
sessions if explicitly configured to do so.


Regards,
Bill Herrin


--
William Herrin
bill () herrin us
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