Hi John, ... I'm not sure yet if I'm following here.
I agree there are two perspectives, at least. One is to compare the growth (time difference) of a certain ISP's full-route routing table. Another is to compare routing tables from different ISPs at a certain time. However, I'm not sure what's the benefit of comparing routing tables from two ISPs of different times. The regexp is a great idea (I wonder why I couldn't think of it myself from the first place). Even though I'm not sure if I can implement all of them until the next IETF, I will work on it. Thanks. Best regards, Yasu From: John Kemp <[email protected]> Subject: Re: [GROW] A new bgpdump tool Date: Fri, 06 Mar 2015 10:29:12 -0800 Message-ID: <[email protected]> > > Yasuhiro, > > We are sort of at two ends of the spectrum here. > If we are just talking about a simple tool, I guess the > point I was making was that somehow you probably want to > consider that there is a time domain. > > For example, if your tool is parsing out ribs. If it > could also read those back in, and then do "comm" kinds > of comparisons, then you could compare two ribs from different > times. IE what is common, what is in both, what is only in > 1 vs. 2, or 2 vs. 1. > > Or a kind of regexp feature might be nice. You probably > want ASPATH regexp to add to the prefix matching, as well > as next-longest/next-shortest matching.... > > /jgk > > On 3/6/15 7:19 AM, Sriram, Kotikalapudi wrote: >>> Yes, I'm interested in route leaks. Now I'm wondering what kind of >>> functions are beneficial in a BGP dump tool to help people check or >>> find the route leaks. Please let me know if you have some idea. >> >> Some additional references related to determining AS relations, routing >> policies, >> and route leak detection/mitigation: >> >> "Valley-free violation in Internet routing - Analysis based on BGP Community >> data" >> http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6363987&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6363987 >> >> >> "AS Relationships, Customer Cones, and Validation" >> http://www.caida.org/~amogh/papers/asrank-IMC13.pdf >> >> "A Survey of Interdomain Routing Policies" >> https://www.cs.bu.edu/~goldbe/papers/survey.pdf >> >> "Methods for Detection and Mitigation of BGP Route Leaks" >> https://tools.ietf.org/html/draft-sriram-route-leak-detection-mitigation-00 >> (to be presented in the IDR WG meeting in Dallas) >> >> Sriram >> >> >> > _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
