Hi Robert, Thanks a lot for the comment!
Please find reply inlines with [Shunwan]. Best Regards, Shunwan From: GROW [mailto:[email protected]] On Behalf Of Robert Raszuk Sent: Tuesday, March 12, 2019 7:48 AM To: [email protected] Subject: Re: [GROW] I-D Action: draft-chen-grow-enhanced-as-loop-detection-00.txt Dear authors of draft-chen-grow-enhanced-as-loop-detection, The draft says: " At this point, AS 200 can lookup the local resource database and check whether there is a real AS relationship between the local AS and the left AS and the right AS" Can you please share a pointer to any database or accurate public oracle where anyone could check if peering relation found in the AS-PATH is valid or invalid ? [Shunwan] Sorry, I can't. But what we refer here to those ASs that have a connection with the local AS. From the perspective of the local AS, it can manage/hold the AS-relationship database between the local AS and each of those ASs (such as C2P, P2P, P2C, etc.). Just over the last few months I connected my AS to number of Tier1 ISPs in few of my experimental POPs, but never reported that peering establishment to anyone. Then I have a question - how any (public) database would accurately reflect any global BGP peering relation to be used anywhere for filtering of BGP updates ? [Shunwan] This is indeed a difficult problem to be solved, and we also want to know how to solve it. Thanks again! Kind regards, RR. On Tue, Mar 12, 2019 at 12:27 AM <[email protected]<mailto:[email protected]>> wrote: A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Enhanced AS-Loop Detection for BGP Authors : Huanan Chen Yunan Gu Shunwan Zhuang Haibo Wang Filename : draft-chen-grow-enhanced-as-loop-detection-00.txt Pages : 9 Date : 2019-03-11 Abstract: This document proposes to enhance AS-Loop Detection for BGP Inbound/ Outbound Route Processing. The IETF datatracker status page for this draft is: https://datatracker.ietf..org/doc/draft-chen-grow-enhanced-as-loop-detection/<https://datatracker.ietf.org/doc/draft-chen-grow-enhanced-as-loop-detection/> There are also htmlized versions available at: https://tools.ietf.org/html/draft-chen-grow-enhanced-as-loop-detection-00 https://datatracker.ietf.org/doc/html/draft-chen-grow-enhanced-as-loop-detection-00 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org<http://tools.ietf.org>. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ I-D-Announce mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
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