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ManualsBrandsARUBA NETWORKS ManualsComputers & LaptopsAruba Instant IAP-325 IEEE 802.11ac 1.69 Gbit/s Wireless Access Point - 2.40 GHz, 5 GHz - 8 x Antenna(s) - 8 x Internal Antenna(
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214 | VPN Configuration Aruba Instant 6.4.0.2-4.1 | User Guide
a. To allow the VPN tunnel to switch back to the primary host when it becomes available again, select Enabled
from the Preemption drop-down list. This step is optional.
b. If Preemption is enabled, specify a value in seconds for Hold time. When preemption is enabled and the
primary host comes up, the VPNtunnel switches to the primary host after the specified hold time. The default
value for Hold time is 600 seconds.
c. To allow the IAP to create a backup VPN tunnel to the controller along with the primary tunnel, and maintain
both the primary and backup tunnels separately, select Enabled or Disabled from the Fast failover drop-
down list. If the primary tunnel fails, the IAP can switch the data stream to the backup tunnel. This reduces
the total failover time to less than one minute.
d. To disconnect all wired and wireless users when the system switches during VPNtunnel transition from
primary to backup and backup to primary, set Reconnect user on failover to Enabled.
e. To configure an interval for which wired and wireless users are disconnected during a VPN tunnel switch,
specify a value in seconds for Reconnect time on failover within the range of 30—900 seconds. By default,
the reconnection duration is set to 60 seconds.
f. Specify a value in seconds for Secs between test packets. Based on the configured frequency, the IAP can
verify if an active VPN connection is available. The default value is 5 seconds, which means that the IAP
sends one packet to the controller every 5 seconds.
g. Enter a value for Max allowed test packet loss, to define a number for lost packets, after which the IAP can
determine that the VPNconnection is unavailable. The default value is 2.
h. Select Enabled or Disabled from the Per-AP tunnel drop-down list. The administrator can enable this option
to create a GRE tunnel from each IAP to the VPN/GRE Endpoint rather than the tunnels created just from the
master IAP. When enabled, the traffic to the corporate network is sent through a Layer-2 GRE tunnel from the
IAP itself and need not be forwarded through the master IAP.
Figure 65 Aruba GRE Configuration
6. Click Next to continue.