nanog mailing list archives
RE: /24s run amuck again
From: "Michelle T" <mtruman () mn mediaone net>
Date: Fri, 8 Jun 2001 08:27:46 -0500
Where did you get this list of prefixes? I just checked the routes you report for our AS (7018) and every one I've check so far is aggregated. Most are /19's and /18's. Michelle Truman AT&T Internet Services -----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On Behalf Of Richard A. Steenbergen Sent: Friday, June 08, 2001 2:51 AM To: nanog () merit edu Subject: /24s run amuck again We all know that /24s have run amuck. According to the APNIC bgp statistics (http://www.apnic.net/stats/bgp) view of the internet, the current prefix distribution looks: Routing Table Report June 08, 2001 BGP routing table entries examined: 106727 Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:20 /9:5 /10:6 /11:9 /12:32 /13:77 /14:207 /15:346 /16:6905 /17:1175 /18:2174 /19:6720 /20:5247 /21:4509 /22:6779 /23:8684 /24:61402 /25:278 /26:450 /27:463 /28:489 /29:374 /30:317 /31:1 /32:58 This mean over 57% of the routing table consists of /24s. So in order to facilitate getting this fixed, I have prepared a list of the worst offenders and their specific blocks which (most likely) have no reason for not being aggregated. If all of these entries could be aggregated (and I'm certain this simple script missed some), it would reduce the routing table by over 29,000 entries, to less the 78k. I think it's pretty obvious that a lot of these simply have no excuse. http://www.e-gerbil.net/ras/projects/ipaddr/24amuck.txt A list of ASNs with the largest sized offending blocks (not overall count, #1 is UU #2 is BBN #3 is Telstra nothing unexpected there) is: 2711 - Rock Hill Telephone Company 8112 - Bell Atlantic Internet Solutions 701 - UUNet Technologies, Inc. 11371 - Rhythms NetConnections 226 - Los Nettos 7029 - Alltel Information Services, Inc. 18687 - MGC Communications, Inc. 6595 - DoD Education Activity Network Assistance Center 1677 - ANS Communications 1785 - AppliedTheory Corporation 1326 - Advanced Networks & Services Inc. 6499 - Brooks Fiber Properties, Inc. I highly encourage anyone interested to yell at these people. -- Richard A Steenbergen <ras () e-gerbil net> http://www.e-gerbil.net/ras PGP Key ID: 0x138EA177 (67 29 D7 BC E8 18 3E DA B2 46 B3 D8 14 36 FE B6)
Current thread:
- /24s run amuck again Richard A. Steenbergen (Jun 08)
- Re: /24s run amuck again Simon Lyall (Jun 08)
- RE: /24s run amuck again Michelle T (Jun 08)
- <Possible follow-ups>
- RE: /24s run amuck again Karyn Ulriksen (Jun 08)
- RE: /24s run amuck again Richard A. Steenbergen (Jun 08)
- RE: /24s run amuck again Philip Smith (Jun 09)
- RE: /24s run amuck again Richard A. Steenbergen (Jun 09)
- RE: /24s run amuck again Randy Bush (Jun 09)
- RE: /24s run amuck again Richard A. Steenbergen (Jun 09)
- RE: /24s run amuck again Randy Bush (Jun 09)
- RE: /24s run amuck again Richard A. Steenbergen (Jun 09)
- RE: /24s run amuck again Randy Bush (Jun 09)
- RE: /24s run amuck again John Starta (Jun 09)
- RE: /24s run amuck again Richard A. Steenbergen (Jun 09)