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Master IAP failover

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  • 1.  Master IAP failover

    Posted Mar 01, 2015 06:45 AM

    Hello,

     

    I have a question regarding Instant AP deployment. Let's assume that Master IAP has already broken. What will happen? How the other IAP select new Master? I am very interesting what type of message the IAP sending during Master selection. Is it possible that broadcast storm occure on my network?

    Thank you very much for quick response!

     

    Regards,

    Mathew



  • 2.  RE: Master IAP failover

    EMPLOYEE
    Posted Mar 01, 2015 06:50 AM
    Control messages occur using PAPI, the same protocol used in a campus environment. The election process is dynamic but certain IAPs can be marked as preferred master. 


    Thanks, 
    Tim


  • 3.  RE: Master IAP failover

    Posted Mar 01, 2015 07:14 AM

    Thank you very much for response. Could you tell me more about new Master selection? Is it possible that during master selection quality of user traffic e.g voice or video will be worse?

     

    Regards,

    Mathew



  • 4.  RE: Master IAP failover
    Best Answer

    EMPLOYEE
    Posted Mar 01, 2015 07:17 AM
    Traffic will only be affected if: 

    - guest user traffic is being NAT'd
    - traffic is destined for a tunnel
    - the client is connected to the AP that dies. 

    Most Instant traffic is locally bridged at the AP. 


    Thanks, 
    Tim