<div dir="ltr">Miha, <div><br></div><div style>Phones try the second DNS server automatically, so DNS refresh is not usually a problem. The problem is with some PBXs that don't support RFC3263. In this case, the client can implement automatic failover via scripting, but you don't have control over it. </div>
<div style><br></div><div style>B.R. </div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">Flavio E. Goncalves<br><div><br></div></div></div>
<br><br><div class="gmail_quote">2013/5/29 Miha <span dir="ltr"><<a href="mailto:miha@softnet.si" target="_blank">miha@softnet.si</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Flavio,<br>
<br>
thanks for your replay.<br>
<br>
What would you suggest? we are ISP, subnet migration should<br>
not be a problem but this will resolve down time as this<br>
would need time to network admin re-route subnet.<br>
<br>
What about DNS srv. This would not be a problem with zones<br>
as need time to refresh (i just did I quick look to RFC<br>
that you posted in previous post.).<br>
<br>
tnx!<br>
<br>
Miha<br>
<div><div class="h5"><br>
On Wed, 29 May 2013 11:19:59 -0300<br>
Flavio Goncalves <<a href="mailto:flavio@voffice.com.br">flavio@voffice.com.br</a>> wrote:<br>
> Hi Miha,<br>
><br>
> I would suggest two ways. The first is to use the RFC3263<br>
> and implement DNS<br>
> redundancy using DNS SRV and NAPTR. The only other way<br>
> that I know is using<br>
> BGP and migrating the IP address to another server. You<br>
> will need to have<br>
> an AS to do this. It can be implemented by a good (if he<br>
> is willing to do<br>
> that) Internet Provider.<br>
><br>
> B.R.<br>
><br>
> Flavio E. Goncalves<br>
><br>
><br>
> 2013/5/29 Miha <<a href="mailto:miha@softnet.si">miha@softnet.si</a>><br>
><br>
> > Hi,<br>
> ><br>
> > i need a little help or information about geographic<br>
> redundancy.<br>
> ><br>
> > What would be the best way to achive that? If use<br>
> opensips for<br>
> > registration and all users are registered with domain I<br>
> can change record<br>
> > in DNS server but this will need time.<br>
> ><br>
> > What would be the best way to achive this with minimun<br>
> down time?<br>
> ><br>
> ><br>
> > Thanks!<br>
> > Miha<br>
> ><br>
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<br>
</blockquote></div><br></div></div>