> > IMHO, I think we should create a route-set obj like call > it... RS-DEAGGREGATES and list all the major irresponsible > providers's specific /24's in it...
CASE: Business has a /24 from X provider in order to multihome. That /24 is de-aggregated from a /19, with this policy that /24 may not be routed. possible exception: When 2002-3 get passed by ARIN, this could even take on new meaning. ARIN says they will use a single /8 for the handing out of /22-/24 for multihoming end users. will you then filter those /24's also? Also: What happens when that /24 for Business Y noted above is dual routed by ISP A and ISP B, and ISP A's upstream filters but ISP B's does not? Will there be asymmetric routing? Finally: Can anyone from BellSouth, explain the end goal of the de-aggregation? I suspect with 40 + ASs they may be rebuilding their network with a recently announced list of new IP services and DSL growth as asked for under the Federal government Rural DSL regulations... (I'm not trying to defend them, just giving some possibilities) > So some ASes who wish to not accept deaggregated specifics > using RPSL can update their AS import policy to not import > RS-DEAGGREGATES... > > Just my humble opinion.. Comments/critics welcome :) > > -hc > > -- > Haesu C. > TowardEX Technologies, Inc. > Consulting, colocation, web hosting, network design and implementation > http://www.towardex.com | [EMAIL PROTECTED] > Cell: (978)394-2867 | Office: (978)263-3399 Ext. 170 > Fax: (978)263-0033 | POC: HAESU-ARIN > > > On Sun, Oct 12, 2003 at 11:26:49AM -0400, Jared Mauch wrote: > > > > On Sun, Oct 12, 2003 at 01:02:57PM +0000, Stephen J. Wilcox wrote: > > > > > > > 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 > > > > This clearly stands out to me as a reason to keep and use > > prefix filtering on peers to reduce the amount of junk in > the routing > > tables. If bellsouth needs to leak more specifics for load > balancing > > purposes, fine, just make sure those routes don't leave > your upstreams > > networks and waste router memory for the rest of us that > don't need to > > see it. > > > > - Jared > > > > > > (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 > > > > > > > > > > > > > > > > > -- > > Jared Mauch | pgp key available via finger from > [EMAIL PROTECTED] > > clue++; | http://puck.nether.net/~jared/ My > statements are only mine. > >
