Wireless Access

last person joined: 20 hours ago 

Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.
Back to discussions
Expand all | Collapse all

IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

This thread has been viewed 0 times

  • 1.  IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    Posted Jun 19, 2014 03:45 PM

    What is the diffrence between High Availability Inter-Controller Heartbeats and normal VRRP model MASTER-Standby Master?



  • 2.  RE: IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    EMPLOYEE
    Posted Jun 19, 2014 03:47 PM
    With HA, the AP creates a standby tunnel to the other controller allowing for sub-second stateful failover.


  • 3.  RE: IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    Posted Jun 19, 2014 03:51 PM

    Ok thats like a Back-up LMS ?



  • 4.  RE: IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    EMPLOYEE
    Posted Jun 19, 2014 03:52 PM
    Similar, but HA is subsecond and client state is synched between controllers in an HA group.


  • 5.  RE: IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    Posted Jun 19, 2014 10:34 PM

    Tim is correct.   For some more details, have a look at the section in the 6.4 user guide that covers HA heartbeats:

     

    http://www.arubanetworks.com/techdocs/ArubaOS_64_Web_Help/Web_Help_Index.htm#ArubaFrameStyles/VRRP/HighAvHeartbeats.htm

     

    The inter-controller heartbeats only apply when using the new high availability models of 6.4; not traditional primary/backup LMS or VRRP primary LMS based deployments.

     

     



  • 6.  RE: IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    Posted Apr 07, 2016 10:59 AM

    Is it subsecond in total or only for the AP's?

    Example: a controller, with 1000AP and around 3000users, fails and this HA feature is used, would all these be on the backup controller within 1 second?

     

    Are there any test beds performed on this feature?



  • 7.  RE: IN OS 6.4 what is High Availability Inter-Controller Heartbeats?

    EMPLOYEE
    Posted Apr 07, 2016 11:22 AM

    - The intercontroller heartbeat between the standby and the active controller occurs every 100 miliseconds

    - After 5 missed heartbeats the standby controller will ask the APs to fail over to the standby controller

    - How long it takes for the AP to failover  is usually a second or less.

    - Users get disassociated from the AP when this happens and they have to reassociate after the AP comes up on the standby.

    - How long it takes depends on the client, more than anything.