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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: /24s run amuck again
At 14:10 09/06/01 -0400, Richard A. Steenbergen wrote: Email sent to gharmon@rhythms.net, cgreen@rhythms.net, doroberts@rhythms.net on Feb 8 - no response.> 11371 307 Rhythms NetConnections Email sent to: ipadmin@gblx.net, huberman@gblx.net, ip-eng@gblx.net, scarter@gblx.net, bgp@gblx.net, bp@gblx.net on June 4 - everyone responded that the problem was forwarded to Exodus and from there it disappeared into a black hole.> 3491 651 CAIS Internet DSL providers are becoming very bad about this. Someone pointed out to me off list that CAIS had carved up PSI's /8 into over 500 /24s. > 690 502 Merit Network Well at least we don't have to go too far to find the guilty party. :P > 18994 468 Global Crossing > 15870 436 Global Center Frankfurt > 18993 325 Global Crossing Those are the GlobalCenter datacenters being converted into the Exodus network. It looks like they are leaking a sizable number of /32s /30s etc, and since its GBLX space I'm assuming its stuff that used to be aggregated into a single announcement. Basically, after having sent out dozens of emails over the past 6 months I have come to the conclusion that there are a few out there that will fix things when presented with the problem. But the vast majority either don't have a clue, don't want to have a clue or couldn't give a damn that the routing tables are increasing in size. -Hank > There is no attempt to measure aggregation - that's the job of the > CIDR Report. This simply looks at the prefix announced and if it is > outside the above limits, it is counted. Makes very interesting > reading... The one interesting pattern I noticed in the rampant /24 abuse was non- contiguous announcements. It's likely that this kept them off the CIDR Report and any other scans which only looked for contiguous announcements. For example: 1.2.3.0/24 1.2.5.0/24 1.2.7/0.24 -- 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)
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