[SR-Users] Use dmq module with private and public IP addresses

[Markus Bönke]

Hello Henning,

I was hoping that there would be a way with dmq, but anyway I’ll solve this on network level. Thanks for the hint.

Best regards

Markus

> Am 04.06.2019 um 16:46 schrieb Henning Westerholt <hw at skalatan.de>:
> 
> Hi Markus,
> 
> This is a bit an IP routing question, as Kamailio more or less just send the message out to the network stack.
> 
> Some ideas with iproute2:
> 
> - setup a default route to the public internet
> - setup a more specific route for the dmq endpoint 
> - configure a timeout to detect if one gateway is down to deactivate the route
> 
> Another idea would be to enter a DNS record as dmq endpoint and then change it with a monitoring trigger event. Not 100% sure how dmq refresh this, will need some testing.
> 
> Cheers, 
> 
> Henning
> 
> 
> -- 
> Henning Westerholt - https://skalatan.de/blog/ <https://skalatan.de/blog/>
> Kamailio services - https://skalatan.de/services <https://skalatan.de/services>
> 
> 
> Von: Markus Bönke
> Gesendet: Dienstag, 4. Juni, 15:27
> Betreff: [SR-Users] Use dmq module with private and public IP addresses
> An: sr-users at lists.kamailio.org
> 
> 
> Hello NG,
> 
> I have a question regarding the dmq / dmq_userloc module.
> 
> In my test setup have 2 Kamailio servers in 2 different data centers. 
> The data centers are interconnected by a crosslink.
> Each Kamailio server has configured an internal (private) and an external (public) IP address.
> The internal IPs are routed to use the crosslink.
> The external IPs are routed through the public internet by different ISPs.
> 
> The requirement is that the replication should primarily be routed via the crosslink, only if the crosslink is down it should be routed via public internet. 
> 
> As I understand the „server_address“ parameter can have only one IP address. 
> If I configure the public IPs on both sides and one ISP connection gets disconnected, packets will NOT be routed automatically via the crosslink. 
> And the other way around, if I configure the private IPs on both sides and the crosslink gets disconnected, packets will NOT be routed automatically via public internet.
> 
> Is there any way to setup and use dmq for such a scenario ?  
> 
> Thanks and regards
> 
> Markus
> 
> 

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