On Wed, 2010-09-22 at 15:54 +0100, Heath Jones wrote: > I agree - it probably doesn't make much operational difference. > I've only come across is because I'm parsing mrt data from routeviews > and building an AS peering table from path information - which means > dealing with every strange AS path out there..
Do you have code available for this? This must be an oft-repeated task, and it would be good to share. I have some scripts which do similar: http://svn.sdstrowes.co.uk//bgp%20scripts/ Namely, bgpToUniqPaths.mrt.sh, and pathsToLinks.sh. The former takes an MRT table dump and strips out unique BGP paths, the latter takes those BGP paths and generates a list of pairs of ASes connected to each other. However, the latter script removes AS Sets: they appear in a very small proportion of paths, and I cannot say anything of the internal connectivity of that set. If you want to make the scripts fly, they rely on a couple of pieces of Scala code located in http://svn.sdstrowes.co.uk//util/ Cheers, -S. _______________________________________________ rrg mailing list [email protected] http://www.irtf.org/mailman/listinfo/rrg
