[asterisk-users] Recurring SIP problem with asterisk 11.6 & 11.7

[Duncan Turnbull]

Any chance DNS is dying about the same time the problem occurs

I get this occasionally every 6-12 months and usually because DNS got messed up and then something didn’t fall back into place when it recovered - networking looks okay on the machine but asterisk is stuck.

I have been meaning to follow it up, but usually just set domain names to IPs to avoid it

Cheers Duncan

On 13/11/2013, at 1:37 pm, Jeremy Kister <asterisk-03 at jeremykister.com> wrote:

> I have regularly (once a week, once per few hundred calls?) been having problems with Asterisk's SIP stack not responding to packets from any of my registered devices.  In the past, I could not tolerate the outage, so i would restart asterisk to make things happy.
> 
> My Asterisk server is currently in this broken state and I can leave it this way for a short while.  Devices are registered to it and I can 'sip qualify peer xxx'.  'sip show peer xxx' all show Status OK.
> 
> but whenever one of the devices tries to make a new call, Asterisk just doesnt respond.  'sip set debug on' shows no packets.
> 
> from the asterisk server (10.1.0.3), i can see one of my phones (10.1.0.111) trying to make a call:
> # tcpdump -i eth0 -s 0 -t -n host 10.1.0.111
> ARP, Request who-has 10.1.0.3 tell 10.1.0.111, length 46
> ARP, Reply 10.1.0.3 is-at 00:0c:29:07:39:8e, length 28
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.123 > 10.1.0.3.123: NTPv3, Client, length 48
> IP 10.1.0.3.123 > 10.1.0.111.123: NTPv3, Server, length 48
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.123 > 10.1.0.3.123: NTPv3, Client, length 48
> IP 10.1.0.3.123 > 10.1.0.111.123: NTPv3, Server, length 48
> ARP, Request who-has 10.1.0.111 tell 10.1.0.3, length 28
> ARP, Reply 10.1.0.111 is-at 00:13:c4:01:da:4a, length 46
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> IP 10.1.0.111.5060 > 10.1.0.3.5060: SIP, length: 926
> 
> any ideas how we can find out what's upset ?
> 
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