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Re: Experiences on dampening

daemon@ATHENA.MIT.EDU (Fergie)
Mon Oct 9 17:33:12 2006

From: "Fergie" <fergdawg@netzero.net>
Date: Mon, 9 Oct 2006 21:29:44 GMT
To: sil@infiltrated.net
Cc: nanog@merit.edu
Errors-To: owner-nanog@merit.edu


No idea w.r.t. SIP, but I assume that you have seen this?

"BGP Route Flap Dampening Considered Harmful"
http://www.ripe.net/docs/ripe-378.html

- ferg

-- "J. Oquendo" <sil@infiltrated.net> wrote:

Hey all, attempting to assess something related to networking but its on=
 =

the SIP/telephony side of things. I'd like to know how many have had =

success and failures with route dampening. Purpose of this question is, =
=

I'm wondering about a method a VoIP PBX could take similar to BGP's =

dampening where the following would occur:

SIPUSER REGISTER (SEND SIPINFO + IP_INFO) --> Server

If SIPUSER decides to either REGISTER, INVITE, SUBSCRIBE, etc., in an =

insane amount of time, VoIP PBX would take action on it. Give SIPUSER an=
 =

initial penalty and increment it justly however, it *cannot* be address =
=

based. It would likely be two predefined variables.  Overall I just =

would like to know experiences, pros and cons, with dampening.

Thanks in advanced.


--
"Fergie", a.k.a. Paul Ferguson
 Engineering Architecture for the Internet
 fergdawg(at)netzero.net
 ferg's tech blog: http://fergdawg.blogspot.com/


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