[Serusers] DNS SRV problem

[Jiri Kuthan]

At 04:34 PM 7/13/2004, Mark Cerrajetto wrote:
>Hello:
>
>I have a SER proxy server, and 2 SIP-to-pstn gateways (GW1, GW2). I would 
>like to provide redundancy with SER using DNS SRV entries.
>
>The scenario is: every call must be directed to GW1, and **only** if GW1 
>fails, these calls must be directed to GW2.
>
>I've created these dns entries in Bind:
>
>   _sip._udp.my.service.com.  IN  SRV  10  0  5060  gw1.service.com.
>   _sip._udp.my.service.com.  IN  SRV  20  0  5060  gw2.service.com.
>
>   gw1.service.com.  IN  A  192.168.1.1
>   gw2.service.com.  IN  A  192.168.1.2
>   service.com.  IN  A  192.168.1.10
>
>
>SER receives calls to "user1 at service.com", and after a dns srv lookup it 
>sends the call to gw1.service.com correcly. SER configuration is:
>
>   if (uri=~"user1"){
>     rewritehost("my.service.com");
>     forward(uri:host, uri:port);
>     break;
>   };
>
>But, if gw1.service.com is down, SER never tries to send the calls to 
>gw2.service.com.
>
>SER never send INVITEs to the server with priority 20.
>
>Is it a SER limitation, or is it a configuration problem?
>
>Thank you,
>Mark
>
>
>
>
>
>I would like to provide failover redundancy with SER

SER does not provide downstream failover capability based on SRV -- use
failure_route to handle such cases.

-jiri