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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 Both the number of BGP advertisements and the number of ASes have increased noticeably in the past couple of days.


Justin Shore wrote: