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Preventing IAP from electing a new master

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  • 1.  Preventing IAP from electing a new master

    Posted Jan 16, 2018 11:39 AM

    Hello, we have encountered a situation where replacing an IAP with a spare unit that is on older firmware and is in a default state can cause the existing IAP cluster to reassociate with this "new" AP and thus cause them to downgrade and wipe their config. We have had this happen in different scenarios, but it has happened during a refresh or scenario when the normal VC is offline.

     

    Is there a way to configure the cluser to not re-home to another VC that is not part of the existing cluster and same firmware level? I am not sure if setting the preferred master option would accompish this or not. All of our IAP are managed by Airware as well.

     

    IAP are on 6.5.1 code and Airwave is on 8.2.3.1.



  • 2.  RE: Preventing IAP from electing a new master

    EMPLOYEE
    Posted Jan 16, 2018 11:43 AM

    If the older unit has "Preferred Master" enabled, that will happen:  http://www.arubanetworks.com/techdocs/Instant_423_WebHelp/InstantWebHelp.htm#UG_files/CustomizeIAPParams/Master_Election_Protocol.htm

     

    If you don't want that to happen, you need to enable Preferred master on one IAP on your existing cluster.



  • 3.  RE: Preventing IAP from electing a new master

    Posted Jan 16, 2018 11:46 AM

    Thanks Colin, 

     

    Since these are managed by Airwave would I need to do that via CLI or is there an option in the Instant Config for that?



  • 4.  RE: Preventing IAP from electing a new master

    EMPLOYEE
    Posted Jan 16, 2018 11:53 AM

    There should be an option in IGC for that.