[asterisk-bugs] [Asterisk 0015768]: SIP qualify goes out of control and kills links

[Asterisk Bug Tracker]

The following issue has been CLOSED 
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https://issues.asterisk.org/view.php?id=15768 
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Reported By:                bluefox
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15768
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     closed
Asterisk Version:           1.4.26.1 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 open
Fixed in Version:           
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Date Submitted:             2009-08-24 09:50 CDT
Last Modified:              2009-09-17 14:46 CDT
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Summary:                    SIP qualify goes out of control and kills links
Description: 
Situation: 
- about 1200 SIP peers in realtime (onloy 5 in sip.conf)
- Most of those 1200 are configured with qualify=yes
- Servers, which is normal at 2.5Mpbs usage, suddently spikes to 6-10Mpbs
outgoing.
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 (0110887) lmadsen (administrator) - 2009-09-17 14:46
 https://issues.asterisk.org/view.php?id=15768#c110887 
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This isn't really a bug, but is rather a side effect of you having 1200
peers that have the qualify function enabled.

In 1.6, there is the qualifyfreq and other options which lets you spread
out the number of peers you're qualifying at any one time. On 1.4, if you
have qualify enabled for all of those peers, all qualifies go out at the
same time, and thus you end up with this network flood that can't be
handled. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-09-17 14:46 lmadsen        Note Added: 0110887                          
2009-09-17 14:46 lmadsen        Status                   new => closed       
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