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? Caution: This is an external email and may be malicious. Please take care when clicking links or opening attachments. 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 https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbill.herrin.us%2F&data=05%7C02%7Cryan%40rkhtech.org%7C1ecddd454c53487dd9f008dd1588b6c7%7C81c24bb4f9ec4739ba4d25c42594d996%7C0%7C0%7C638690399122795868%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=oIMMlb2brNWyqSZCspO3CoRsBJfuBmzYcjGUki62xO0%3D&reserved=0<https://bill.herrin.us/>