Excessive 6bone BGP route flap?

[Robert J. Rockell]

There is nothing expressly written in rfc2772 prohibiting dampening. I would
encourage all to dampen where you can (should only affect on EBGP, but you
never know with some of the implementations) with at the very least,
looser-than-default parameters.  Sprint is dampening with default parameters
for IPv6, and it appears to be lessening these issues.

P.S. we are not seeing flaps directly from 8002 at this time.

Thanks
Rob Rockell
Principal Engineer
SprintLink Europe/Asia
703-689-6322
Sprint E|Solutions: Thinking outside the 435 box
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On Tue, 21 Aug 2001, Paul Aitken wrote:

->Folks,
->
->I'm looking at my 6bone routers, and seeing excessive bgp flap for
->2001::/16 and 3FFE:8080::/28 :
->
->   Network          From            Flaps Duration Reuse    Path
->
->*d 2001:2E8::/35    3FFE:C00:E:18:: 726   1d12h    00:57:10 8954 8002
->2042 4691 
-> h                  3FFE:80A0:0:F00 1050  4d04h             3320 8002
->4691 
->*d                  3FFE:C00:E:B::2 2678  5d05h    00:57:10 237 3748
->4725 4691 
->*d                  3FFE:80C0:200:5 3608  1w0d     00:57:10 8002 2042
->4691 
->
->*d 3FFE:8080::/28   3FFE:C00:E:18:: 723   1d11h    00:58:10 8954 8002
->4691 
-> h                  3FFE:80A0:0:F00 877   4d04h             3320 8002
->4691 
->*d                  3FFE:C00:E:B::2 1335  5d05h    00:56:10 237 8002
->4691 
->*d                  3FFE:80C0:200:5 3605  1w0d     00:58:10 8002 4691 
->
->*d 3FFE:8080::/28   3FFE:C00:8023:1 1768  1w0d     00:49:20 33 8002 4691 
->
->If I'm reading this right, it flapped 3600 times in the last week - over
->500 times per day, or every 3 minutes :(
->
->I feel that's just a tad excessive :(
->-- 
->Paul Aitken
->IPv6 Development, Cisco Systems Ltd, Edinburgh, Scotland. EH6 6LX
->