[Developers] DNS Caching in Elastix

jose velez jmvelez at velezcomputer.com
Sat Dec 12 10:47:39 ECT 2009


Yes but I use it in load balancing.  Also I have SMEserver in the
gateway which does the dns caching since elastix is pointing to it.
 


On Dec 12, 2009 10:04 AM, Ing. Fernando M. Villares Terán - InteliX
Ingeniería & Telecomunicaciones wrote:


> 
> I have a similar solution, a firewall with fail over and dns caching
> in it
>  
> 
>  
> Saludos Cordiales,
>  
> Ing. Fernando M. Villares Terán
> Mat. CIE. 2-2517-7
> 
> Ingeniería & Telecomunicaciones
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> 
> De: developers-bounces at lists.elastix.org
> [mailto:developers-bounces at lists.elastix.org] En nombre de jose velez
> Enviado el: sábado, 12 de diciembre de 2009 10:14 a.m.
> Para: Mailing list for Developers
> Asunto: Re: [Developers] DNS Caching in Elastix
>  
> What four packages?  I have try the Elastixconnection fix and did not
> work.  Internet fails all SIP do not register.  I have fix it hardware
> wise with two internet providers with a dual port router.
> 
> 
> On Dec 12, 2009 05:05 AM, Mark Brooker wrote:
> 
> Hi Team
>  
> Most of you will know of this bug in Asterisk. When you add a SIP
> trunk and asterisk cant access DNS, the whole SIP protocol falls over.
> None of the IP phones will register and no calls can be made out.
> Basically Digium should fix the issue in asterisk however we should
> try out best to do all the work arounds we can to stop the issue. The
> best work around I have seen is setting up BIND as a local DNS cache.
> It is not a perfect solution because the cache is lost after every
> reboot however if the internet goes down, Elastix will still be able
> to make and take calls through the PSTN.
>  
> At the moment the Elastix GUI writes into /etc/resolv.conf for its
> DNS.
>  
> The best way forward would be to setup bind as a caching server. This
> is very easy and can be done by simply installing 4 packages. In
> resolv.conf we should be setting the nameserver to 127.0.0.1.
>  
> When people enter in their ISPs DNS server it should be entered into
> BINDs configuration as a forwarding server.
>  
> This will make Elastix far more stable and if the internet goes down
> then Elastix should still work as per normal.
>  
>  
> 
> 
> 
> Ing. José M. Vélez PE
> Vélez Computer System
> 1353 Estrella St.
> San Juan, Puerto Rico 00907
> 787 723-5145 fax 721-0062
> 888-402-6665
> email jmvelez at velezcomputer.com
> 
> 
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Ing. José M. Vélez PE
Vélez Computer System
1353 Estrella St.
San Juan, Puerto Rico 00907
787 723-5145 fax 721-0062
888-402-6665
email jmvelez at velezcomputer.com
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