HP Aruba JL253A Management And Configuration Manual page 317

5. Switch tries to establish the IPsec tunnel with the same controller when the following events occur:
• Switch IP change
• Vlan ID change
• Redundancy switch over
6. If aruba-vpn type is amp, after five consecutive AirWave check-in failures, the existing tunnel is destroyed
and an IPsec tunnel is established with the other controller.
NOTE: ZTP continues to support existing DHCP options for AirWave or Controller IP discovery. You
can configure both the primary and backup controllers IP in DHCP.
Chapter 10 Zero Touch Provisioning with AirWave and Central 317