[OpenSIPS-Users] Load balancer setup

[Matt Broad]

Hi,

just seeing if anyone had any ideas?

thanks
Matt

On 22 October 2014 08:42, matt <matt at supportedbusiness.com> wrote:

> Hi,
>
>
> I was looking for some guidance on using the load balancer in a NAT
> environment.
>
> I have the following setup (the IP addresses are made up but should give
> an indication):
>
> 1 x opensips server with load balancer module - IP 192.168.0.1
> 2 x freeswitch servers - IP 192.168.0.2 & 192.168.0.3
>
> All 3 servers have seperate external IP address routing to their internal
> IP via our firewall:
> 217.0.0.1 routed to 192.168.0.1 (Opensips)
> 217.0.0.2 routed to 192.168.0.2 (FS1)
> 217.0.0.3 routed to 192.168.0.3 (FS2)
>
> I have the load_balancer table with the following details:
>
> id,  | group_id, |                  dst_uri,            | resources,  |
> probe_mode, | description
> '1',  |      '1',     |  'sip:192.168.0.2:5080',  |   'pstn=10', |
>    '2',       |          'FS1'
> '2',  |      '1',     |  'sip:192.168.0.3:5080',  |   'vm=1',     |
>   '2',       |          'FS2'
>
>
> The call flow is:
>
> SIP Provider --> 217.0.0.1 Opensips --> 192.168.0.2/3
>
> The issue is, that when the 200 ok response is sent to the SIP provider,
> the Freeswitch server's internal IP is being sent in the SDP connection
> information (c).  This causes the ACK response from the SIP Provider to
> fail to be sent correctly.
>
> With the calls routed directly to the FS servers (removing opensips from
> the flow), the calls work fine.
>
> Any help would be much appreciated :)
>
>
> thanks
> Matt
>
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