Siemens SCALANCE W1750D UI User Manual

VPN Configuration
19.2 Configuring a Tunnel from an AP to a Mobility Controller
SCALANCE W1750D UI
Configuration Manual, 02/2018, C79000-G8976-C451-02
311
5. Specify the following parameters. A sample configuration is shown in Figure ArubaGRE
Configuration
.
–
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.
–
If
Preemption
is enabled, specify a value in seconds for
Hold time
. When preemption
is enabled and the primary host comes up, the VPN tunnel switches to the primary
host after the specified hold time.
The default value for
Hold time
is 600 seconds.
– To allow the AP 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
from the
Fast failover
drop- down list. If this option is enabled, when the primary tunnel
fails, the AP can switch the data stream to the backup tunnel. This reduces the total
failover time to less than one minute.
– To disconnect all wired and wireless users when the system switches during VPN
tunnel transition from primary to backup and backup to primary, set
Reconnect user
on failover
to
Enabled
.
– 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.
–
Specify a value in seconds for
Secs between test packets
. Based on the configured
frequency, the AP can verify if an active VPN connection is available. The default
value is 5 seconds, which means that the AP sends one packet to the controller every
5 seconds.
– Enter a value for
Max allowed test packet loss
to define a number for lost packets,
exceeding which the AP can determine that the VPN connection is unavailable.
The
default value is 2.
–
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 AP to the VPN/GRE endpoint
rather than the tunnels created just from the master AP. When enabled, the traffic to
the corporate network is sent through a Layer-2 GRE tunnel from the AP itself and
need not be forwarded through the master AP.

Siemens SCALANCE W1750D UI Specifications

General

Brand	Siemens
Model	SCALANCE W1750D UI
Category	Wireless Access Point
Language	English