[asterisk-users] server unresponsive

[Edwin Lam]

Paul Scott wrote:
> How is your network structured?

we have a central location where the * server is located. and 4 remote
locations connected via point to point lines.

> Can you show me a sample entry from your sip.conf?

we use realtime sip w/ mysql tables. a typical entry would looks
like this:

[1234]
context=default10
type=friend
secret=xyz
qualify=yes
host=dynamic
canreinvite=no
dtmfmode=rfc2833
disallow=all
allow=g729
allow=alaw
allow=ulaw

> I was having this problem.  But as far as I could tell there wasn't  
> one.   From a network stand point all phones were reachable asterisk  
> was just reporting that it was Unreachable and it wasn't sending the  
> calls. I switched to qualify=no and wrote a small agi to catch  $ 
> {HANGUPCAUSE} and log it to a file.  If it records a bunch of  
> chanunavail messages you still have a problem.
> 
> If you don't want to turn qualify off you could play with the qualify  
> times.  I did a bunch of this before I just gave up.
> 
> I'm sure there is a better or proper way of handling this.  I'm  
> interested to hear it.
> 
> Paul
> 
> 
> 
> On Nov 20, 2009, at 3:41 PM, Edwin Lam wrote:
> 
>> hi folks.
>>
>> we've experienced some weird problems lately. we have about 600
>> SIP phone on a single system running *1.4.26.2 for about a month.
>> recently there was massive UNREACHABLE messages like this one
>> showed up:
>>
>> chan_sip.c: Peer '2699' is now UNREACHABLE!  Last qualify: 1252
>>
>> then they all became reachable again in a few seconds. sometimes
>> it last for couple minutes. but sometimes it last for hours, when
>> that happens. the system will get very slow and eventually error
>> like this will start showing:
>>
>> channel.c: Exceptionally long voice queue length queuing to IAX2/ 
>> hostpbx2-12619
>>
>> after a while the whole system will become unresponsive
>> until i kill the asterisk process.
>>
>> i've checked our network switches/routers and connections.
>> they all work fine without any packet lost.
>>
>> any suggestions?


-- 
Edwin Lam <edwin.lam at officegeneral.com>
Systems Engineer, Office General, Inc.
Ph: +1 415 439 4988 Fax: +1 415 283 3370
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0xD6506D20