asterisk users - Dec 2006 - Asterisk freezes when DNS not working: a BUG??

Hi,
I'm using Asterisk 1.2.9.1. I have big problem with SIP VoIP providers 
registrations: Asterisk freezes when it cannot (re-)register with VoIP 
provider (registration timeout). The problem is related to DNS names 
resolution: if DNS server is very slow to respond Asterisk stops every 
activity (no zap or restart commands on CLI). The bad news is VoIP 
providers usually do not give their IP so I cannot use it.

Is there anybody who had a problem like this?

TIA

Giorgio Incantalupo

Am Mittwoch, den 06.12.2006, 10:43 +0100 schrieb Giorgio
Incantalupo:
> Hi,
> I'm using Asterisk 1.2.9.1. I have big problem with SIP VoIP providers 
> registrations: Asterisk freezes when it cannot (re-)register with VoIP 
> provider (registration timeout). The problem is related to DNS names 
> resolution: if DNS server is very slow to respond Asterisk stops every 
> activity (no zap or restart commands on CLI). The bad news is VoIP 
> providers usually do not give their IP so I cannot use it.
They usually do not give their IP adresses with reason. You could of
course look those IPs up and enter the address instead of the name, but
the nice thing about DNS is that the provider can hook a second machine,
with another address, and change the DNS to move the SIP target for all
their users. They could also use round-robbing for multiple machines or
whatever - features you will not get if you set an ip in your
configuration.

If you do not see a way to get around it, try setting the IP in
the /etc/hosts file. That is ugly, for the reasons mentioned, but it
would keep DNS from timing out.

BR
Anselm

Just do a lookup for the domain name and resolve it to the IP address

Best regards,

Al Bochter
Bochter Services
http://www.BochterServices.com/?t=Email

(VOIP PBX) 1-866-638-1254

(Voip PBX) Free World DialUp: 780-217
WebSite: http://www.freeworlddialup.com/

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Giorgio Incantalupo wrote:
> Hi,
> I'm using Asterisk 1.2.9.1. I have big problem with SIP VoIP providers 
> registrations: Asterisk freezes when it cannot (re-)register with VoIP 
> provider (registration timeout). The problem is related to DNS names 
> resolution: if DNS server is very slow to respond Asterisk stops every 
> activity (no zap or restart commands on CLI). The bad news is VoIP 
> providers usually do not give their IP so I cannot use it.
>
> Is there anybody who had a problem like this?
>
> TIA
>
> Giorgio Incantalupo
>
>
>
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Giorgio,

You could set up a caching name server in your local network, use it as
your primary DNS server and your ISP's as a secondary.  This would cache
your ITSP's address(es) locally limiting your reliance on your ISP.

Bob...

On Wed, 2006-12-06 at 10:43 +0100, Giorgio Incantalupo
wrote:
> Hi,
> I'm using Asterisk 1.2.9.1. I have big problem with SIP VoIP providers 
> registrations: Asterisk freezes when it cannot (re-)register with VoIP 
> provider (registration timeout). The problem is related to DNS names 
> resolution: if DNS server is very slow to respond Asterisk stops every 
> activity (no zap or restart commands on CLI). The bad news is VoIP 
> providers usually do not give their IP so I cannot use it.
> 
> Is there anybody who had a problem like this?
> 
> TIA
> 
> Giorgio Incantalupo
> 
> 
> 
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
> 
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users