[OpenSIPS-Users] Load Balancer

[Matt Broad]

Hi Bogdan,

thanks for the reply.
The issue was that the Opensips box could not contact the FS box using the
FS external IP address. I have solved the issue by making some changes to
the firewall.  I have added a loop back (?) so that the Opensips box can
contact the FS box using it's external IP address, and all works fine now.
I didn't post an update just incase someone had an alternative/better
solution.

thanks
Matt

On 29 June 2015 at 10:34, Bogdan-Andrei Iancu <bogdan at opensips.org> wrote:

>  Hi Matt,
>
> There is something bogus in your setup. If FS is advertising the public
> IP, why is it not able to receive traffic on that IP (the ACK from
> OpenSIPS). You need to make a consistent setup in there in terms of used
> and routable IPs.
>
> Now, the 200 OK (to INVITE) is sent by FS via the external or internal IP ?
>
> Regards,
>
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>
> On 24.06.2015 17:40, Matt Broad wrote:
>
> Hi,
>
>   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'
>
>
>  Now the initial invite goes through the usual steps, as shown below, but
> the issue arises when the ACK comes back from the SIP provider.  Opensips
> is trying to forward the packet to the Freeswitch external IP address
> rather than the internal IP.  This is due, I think, to the Contact details
> in the 200 response from Freeswitch containing the Freeswitch external IP.
> Is there a way of having Opensips take the external IP and route to the
> internal IP instead?  Any help/suggestions would be much appreciated.
>
>
>
>    No. Time
>  Source Destination Protocol Length Info  42 5.827674
>  SIP Provider OpenSips Internal SIP/SDP 873 Request: INVITE
> sip:test at Opensips External |   43 5.828043
>  OpenSips Internal SIP Provider SIP 397 Status: 100 Giving a try |   44
> 5.828159
>  OpenSips Internal Freeswitch Internal SIP/SDP 1039 Request: INVITE
> sip:test at Opensips External |   45 5.828605
>  Freeswitch Internal OpenSips Internal SIP 588 Status: 100 Trying |   46
> 5.832171
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   54
> 5.833451
>  OpenSips Internal SIP Provider SIP/SDP 1132 Status: 200 OK |   55
> 5.836739
>  SIP Provider OpenSips Internal SIP 522 Request: ACK sip:test at Freeswitch
> External:5080;transport=udp |   61 5.838075
>  OpenSips Internal Freeswitch External SIP 545 Request: ACK
> sip:test at Freeswitch External:5080;transport=udp |   70 6.33254
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   71
> 6.33265
>  OpenSips Internal SIP Provider SIP/SDP 1132 Status: 200 OK |   80
> 7.332536
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   81
> 7.332666
>  OpenSips Internal SIP Provider SIP/SDP 1132 Status: 200 OK |   86
> 9.332576
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   87
> 9.332712
>  OpenSips Internal SIP Provider SIP/SDP 1132 Status: 200 OK |   136
> 13.331858
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   152
> 16.938621
>  SIP Provider OpenSips Internal SIP 553 Request: BYE sip:test at Freeswitch
> External:5080;transport=udp |   158 16.939786
>  OpenSips Internal Freeswitch External SIP 577 Request: BYE
> sip:test at Freeswitch External:5080;transport=udp |   160 17.33247
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   161
> 17.37482
>  OpenSips Internal Freeswitch External SIP 577 Request: BYE
> sip:test at Freeswitch External:5080;transport=udp |   163 17.937941
>  SIP Provider OpenSips Internal SIP 553 Request: BYE sip:test at Freeswitch
> External:5080;transport=udp |   166 18.375894
>  OpenSips Internal Freeswitch External SIP 577 Request: BYE
> sip:test at Freeswitch External:5080;transport=udp |   170 18.776373
>  OpenSips Internal SIP Provider SIP 415 Status: 408 Request Timeout |
> 178 21.332616
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   222
> 25.333161
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   257
> 29.333884
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   283
> 33.334482
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |   306
> 37.335049
>  Freeswitch Internal OpenSips Internal SIP/SDP 1221 Status: 200 OK |
>
>
>
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