|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: BellSouth prefix deaggregation (was: as6198 aggregation event)
> Can anyone from BellSouth comment? What if a few other major ISPs were > to add a thousand or so deaggregated routes in a few weeks time? Would > there be a greater impact? one word - irresponsible Steve > > (Note: The above numbers are based on data from cidr-report.org. Some > other looking glasses were also checked to see if cidr-report.org's view > of these AS's is consistent with the Internet as a whole. This appears > to be the case, but corrections are welcome.) > > -Terry > > > -----Original Message----- > > From: [email protected] [mailto:[email protected]] On > > Behalf Of Terry Baranski > > Sent: Sunday, October 05, 2003 3:01 PM > > To: 'James Cowie'; [email protected] > > Subject: RE: as6198 aggregation event > > > > > > > > James Cowie wrote: > > > > > On Friday, we noted with some interest the appearance of more > > > than six hundred deaggregated /24s into the global routing > > > tables. More unusually, they're still in there this morning. > > > > > > AS6198 (BellSouth Miami) seems to have been patiently injecting > > > them over the course of several hours, between about 04:00 GMT > > > and 08:00 GMT on Friday morning (3 Oct 2003). > > > > If you look at the 09/19 and 09/26 CIDR Reports, BellSouth Atlanta > > (AS6197) did something similar during this time period -- they added > > about 350 deaggregated prefixes, most if not all /24's. > > > > > Usually when we see deaggregations, they hit quickly and they > > > disappear quickly; nice sharp vertical jumps in the table size. > > > This event lasted for hours and, more importantly, the prefixes > > > haven't come back out again, an unusual pattern for a single-origin > > > change that effectively expanded global tables by half a percent. > > > > That AS6197's additions are still present isn't encouraging. > > > > -Terry > > > >
|