Thank you all for the helpful comments. We will update the draft over the next few weeks and send to you for further review. If anyone cares to join us as an author please let us know.
And yes Robert, perhaps we can eventually conclude that if you do prepending then do X but that we discourage prepending by instead doing Y. mike -----Original Message----- From: Nick Hilliard <[email protected]> Sent: Sunday, July 26, 2020 1:59 PM To: Michael McBride <[email protected]> Cc: [email protected] Subject: Re: [GROW] AS_Path prepend BCP Michael McBride wrote on 26/07/2020 19:42: > We have submitted > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdata > tracker.ietf.org%2Fdoc%2Fdraft-mcbride-grow-as-path-prepend%2F&dat > a=02%7C01%7Cmichael.mcbride%40futurewei.com%7C23a5d643a0804b71ff1908d8 > 31a6c523%7C0fee8ff2a3b240189c753a1d5591fedc%7C1%7C0%7C6373139396290344 > 10&sdata=IpTVh2AVylhnMb94MROGNtVMxuguov16bpXBHwdvT%2Fs%3D&rese > rved=0 which is intended to be a bcp in the use of AS_Path prepend > based on work of Doug Madory. As we state in the intro: AS_Path > prepending is discussed in Use of BGP Large Communities [RFC8195] and > this document provides additional, and specific, guidance to operators > on how to be a good internet citizen with the proper use of AS_Path > prepend. > > We would encourage feedback on this document. Good start - but needs work! some suggestions: - it would be useful to have a histogram or table of the frequency of unique-aspath lengths (i.e. with all prepending flattened). This would help contextualise the best practice recommendation. - +1 on randy's comments about de-nationalising and providing examples of why recommended good practice is good practice. - a BCP should be as relevant and fresh in 10 years time as it is today, so imagine it's 2030 and you're reading the draft: plenty of things in it need to be made insensitive to time context. E.g. 95.47.142.0/23 might be held by a Guatamalan company in 10 years time, AS174 might be assigned to NTTCogentCentury and AS6939 might be Hurricane Equinix. You never know. - it would be useful to give advice on how to measure the effectiveness of prepending in terms of remote global visibility. Nick _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
