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Mediation server DNS load balancing with Avaya IP-PBX RRS feed

  • Question

  • Dear team,

    There's a customer having a total Avaya Solution as their PABX solution. Also, the client does have Lync Server 2010 Enterprise environment with 2x FE servers (Mediation Service collocated) and is looking for the option of integrating the Lync with their Avaya using 'Avaya CM SIP Enablement Services' which is mentioned in the 'Supported lP-PBX' list.

    In terms of load balancing, currently, I have the 2 FE servers in the pool collocated with mediation role under DNS load balancing. I would like to know whether it is possible to have the integration in such a load balancing way from Lync's point, without having to use a standalone or HLB device?

    *Want to know if one FE goes down, the mediation services will be used the second FE server by the Avaya system?*

    Thank you,
    Cheers..

     


    Tuesday, April 1, 2014 5:19 AM

Answers


  • HI

    Multiple mediation servers connecting to the same PSTN gateway or SIP trunk required redundant DNS A records pointing to the same IP to fool the Topology Builder. Lync 2013 supports M-N trunk routing. This allows for multiple trunks pointing to different gateways as well as for gateways with multiple trunks for different Mediation Servers.

    After First Server will went down it might take some to go Second Server.

    Regards

    Zahoor hakeem | U C Solution Architect|

    • Proposed as answer by Lisa.zheng Tuesday, April 8, 2014 6:10 AM
    • Marked as answer by Lisa.zheng Monday, April 14, 2014 1:46 AM
    Tuesday, April 1, 2014 9:00 AM
  • Hi,

    Avaya doesnt have this understanding when defining SIP trunk, if one FE goes down Avaya will not know if the server is down and keep sending requests to that server

    Thanks

    • Proposed as answer by Lisa.zheng Tuesday, April 8, 2014 6:10 AM
    • Marked as answer by Lisa.zheng Monday, April 14, 2014 1:46 AM
    Tuesday, April 1, 2014 7:18 AM

All replies

  • Hi,

    Avaya doesnt have this understanding when defining SIP trunk, if one FE goes down Avaya will not know if the server is down and keep sending requests to that server

    Thanks

    • Proposed as answer by Lisa.zheng Tuesday, April 8, 2014 6:10 AM
    • Marked as answer by Lisa.zheng Monday, April 14, 2014 1:46 AM
    Tuesday, April 1, 2014 7:18 AM

  • HI

    Multiple mediation servers connecting to the same PSTN gateway or SIP trunk required redundant DNS A records pointing to the same IP to fool the Topology Builder. Lync 2013 supports M-N trunk routing. This allows for multiple trunks pointing to different gateways as well as for gateways with multiple trunks for different Mediation Servers.

    After First Server will went down it might take some to go Second Server.

    Regards

    Zahoor hakeem | U C Solution Architect|

    • Proposed as answer by Lisa.zheng Tuesday, April 8, 2014 6:10 AM
    • Marked as answer by Lisa.zheng Monday, April 14, 2014 1:46 AM
    Tuesday, April 1, 2014 9:00 AM