AS path weirdness

Jason Lewis jlewis at packetnexus.com
Fri Mar 20 21:48:44 CDT 2009


I'm seeing the following in the MRT data from RRC04 at ripe.
http://www.ripe.net/projects/ris/rawdata.html

http://data.ris.ripe.net/rrc04/2009.03/bview.20090320.2359.gz for reference.

I'm not entirely sure what I'm looking at. The reserved AS, 65490
appears in parentheses and I've never seen that in MRT formatted data
and not sure why it's happening.

I'm also not clear on why I see 23456 *and* a 32 bit AS in the path.  Is
 anyone else seeing this or is it something wacky at RRC04?

91.201.176.0/22|29222 6830 (65490) 3356 21219 3.30
91.207.218.0/23|29222 6830 (65490) 3356 35320 3.21 23456
195.88.52.0/23|29222 6830 (65490) 3356 13249 28761 3.57
95.128.230.0/24|29222 6830 (65490) 2914 35320 3.21 23456 35748
195.128.231.0/24|29222 6830 (65490) 2914 35320 3.21 23456 35748


jas




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