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ArubaOS 8 HA without MM/conductor

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  • 1.  ArubaOS 8 HA without MM/conductor

    Posted Aug 30, 2023 05:44 AM

    Dear Experts, 

    I am confused in HA Fast Failover setup in two standalone 7210 controllers. I have seen VRRP based redundancy option, but can we achieve HA FF (<60 msec or something like that) using 2x7210 as active active without MM/conductor?

    I read that FF like 6.x is not possible and it depends on VRRP. Is it correct in the latest version like 8.10/8.11 also? we cannot achieve subsecond failover without MM?

    If yes, will it also sync configuration and database?



  • 2.  RE: ArubaOS 8 HA without MM/conductor

    Posted Aug 31, 2023 02:43 AM

    You already looked into documentation where Fast Failover is described. Answer is no, it's still the same limitations as before if you are not using MM.

    The sessions are not synchronized in FF, but client state can be synchronized.

    From documentation:

    High Availability: Fast Failover provides redundancy for APs, but not for controllers. Deployments that require conductor controller redundancy should continue to use an existing VRRP redundancy solution. 

    In FF scenario with separated controllers you need to manage configurations for each controller manually. You can also go with Master-Local configuration and sync will be done by Master. Many options here and a lot of confusion can be added to the network configuration. MM is more elegant solution (but it has it's own caveats).

    MM add a lot of benefits to the WiFi network. It is also worth to look into AOS10 with Aruba Central.

    Best, Gorazd



    ------------------------------
    Gorazd Kikelj
    MVP Expert 2023
    ------------------------------



  • 3.  RE: ArubaOS 8 HA without MM/conductor

    Posted 19 days ago

    Dear Gorazd,

    can you give more details for Master-Local configuration and sync will be done by Master or any other way to sync the configuration?

    same situation of having two separate controller and want to have FF as it make failover less other than the VRRP (I think but not really know the exact time)

    Best Regards,

    elashiam




  • 4.  RE: ArubaOS 8 HA without MM/conductor

    Posted 19 days ago

    Elashiam,

    Did you read further down this discussion? In the post at the bottom (moment of writing), there are links to documentation and even a video.

    As mentioned, Mobility Conductor (MCR or MM), is the recommended solution for quick recovery in failover scenarios. If your looking in Conductor-Standby, that will probably not result in an optimal solution.



    ------------------------------
    Herman Robers
    ------------------------
    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
    ------------------------------



  • 5.  RE: ArubaOS 8 HA without MM/conductor

    Posted 19 days ago

    Hi Elashiam.

    As Herman is already pointed out, MM is preferred solution to provide fastest possible failover.

    If you can go with AOS10 and Central using 7220 as WiFi Gateways and Central as management platform, then this would be the second possible solution, 

    It depend on your available budget (cost of MM + licenses + support vs cost of Central subscriptions vs current configuration). and required failover time. If VRRP is not good enough, then you need to budget properly for one of the proposed solutions.

    Best, Gorazd



    ------------------------------
    Gorazd Kikelj
    MVP Guru 2024
    ------------------------------



  • 6.  RE: ArubaOS 8 HA without MM/conductor

    Posted Sep 01, 2023 01:57 PM

    "The High Availability feature is not supported on Standalone Conductor-Standby deployments."

    https://www.arubanetworks.com/techdocs/ArubaOS_8.11.1_Web_Help/Content/arubaos-solutions/vrrp/conf-high-avai.htm




  • 7.  RE: ArubaOS 8 HA without MM/conductor

    Posted Sep 02, 2023 08:45 AM
    It is referring to standalone conductor? and then showing configuration for standalone controller? 

    little confused







  • 8.  RE: ArubaOS 8 HA without MM/conductor

    EMPLOYEE
    Posted Sep 07, 2023 01:26 PM

    Change in wording from what was previously used (inclusive language initiative) but still refers to a pair of standalone controllers running in a VRRP pair with database synchronization.



    ------------------------------
    Carson Hulcher, ACEX#110
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  • 9.  RE: ArubaOS 8 HA without MM/conductor

    MVP
    Posted Sep 04, 2023 03:55 AM

    This is the link for Aruba OS 8.5 https://www.arubanetworks.com/techdocs/ArubaOS_85_Web_Help/Content/arubaos-solutions/vrrp/conf-high-avai.htm

    Another video (without the MM) which can be helpful can be found under this link: Aruba Wireless controller Master and Standby | Controller Redundancy without MM | AOS 8.6

    Not sure if this is of any help :) 



    ------------------------------
    Shpat | ACEP | ACMP | ACCP | ACDP |
    -Just an Aruba enthusiast and contributor by cases-
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