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Re: Deaggregation factor jump (Re: Weekly Routing Table Report)

  • From: Geoff Huston
  • Date: Sat Feb 23 20:41:41 2008


David Conrad wrote:

[cc's drastically reduced]

On Feb 22, 2008, at 10:06 AM, Routing Analysis Role Account wrote: 
Analysis Summary
----------------
BGP routing table entries examined:                              246872
   Prefixes after maximum aggregation:                          124953
   Deaggregation factor:                                          1.98

Yow. Last week it was 1.96 and this constitutes a significant increase. Anybody have an idea of what happened?

Cox has jumped about 2k in the past month for me. If I could ever figure out what the OIDs are for BGP peers I would graph it.



Something is happening since the 21st of this month.

Check out the plot of BGP entries and ASes on the first page of http://www.cidr.report.org. Both the number of BGP advertisements and the number of ASes have increased noticeably in the past couple of days.


Geoff



Justin Shore wrote: