[OpenSIPS-Users] Using two Opensips Proxy in Redundant mode

Ali Pey alipey at gmail.com
Sat Jun 16 15:43:19 CEST 2012

Hi Jayesh,

Are you looking for an active/active solution or active/standby? Why do you
need an active/active solution? You can use virtual IP to implement a
active/standby solution and both servers would share the same database.

Ali Pey

On Mon, Jun 11, 2012 at 12:33 PM, Jayesh Nambiar <jayesh.voip at gmail.com>wrote:

> Hi,
> I am trying to setup two opensips proxies with identical configuration so
> that the endpoints can REGISTER on either of the proxy. Wat is the best way
> to handle REGISTER in such scenarios. I read a lot of posts but all
> explaining about a proxy P1 which relays to multiple Registrars with Path
> headers in it. I just need to have two proxies and both having USRLOC with
> DB Mode 1 preferably. Since there are NATed clients in the picture, the
> calls can to the endpoints only from the proxy where they registered to as
> keep-alives are being called from that IP. Also the database that these
> proxies are looking at is in circular-replication. I had a few approaches:
> 1) If REGISTER arrives on P1, P1 should ideally authorize and save into
> location and  replicate this information to P2 using t_replicate. On P2, I
> do not authorize REGISTER coming from P1 and just do save("location"). But
> on P2, the socket shows P2_Public_IP only. Theoretically the socket
> information should not change right !!
> 2) While doing lookup("location") is it possible to fetch the socket
> information and send the INVITE to P1 appropriately, so that P1 can relay
> that call ahead to the NATed endpoint?
> I have seen a few examples of handling NATed clients in the NAT_Traversal
> module, but all are cases where there is one Proxy responsible of accepting
> calls and relaying call to endpoints while there can be multiple proxies
> handling the requests for load balancing.
> My requirement was that the endpoints can either Register on P1 or P2,
> when the call arrives in for any endpoint on P1; P1 checks if the endpoint
> had sent REGISTER to P1 (Basically identifying the socket); if yes relay
> the call; Or else if the endpoint is registered with P2 then relay the call
> to P2 and let P2 relay it to the endpoint. Same is applicable if the call
> arrives on P2 for any endpoint.
> Any help regarding this setup is appreciated!!
> Thanks in advance.
> --- Jayesh
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