Dell W-Series 334 Instant 6.4.3.1-4.2 User Guide - Page 230

Configuring Dell GRE Parameters, In the Instant UI, Primary host

Page 230 highlights

(host)(config-tunnel)# tunnel destination (host)(config-tunnel)# trusted (host)(config-tunnel)# tunnel vlan Configuring Dell GRE Parameters The automatic GRE feature uses the IPSec connection between the W-IAP and controller to send the control information for setting up a GRE tunnel. When automatic GRE configuration is enabled, a single IPSec tunnel between the W-IAP cluster and the controller, and one or several GRE tunnels are created based on the Per-AP tunnel configuration on the W-IAP. For Dell GRE, no manual configuration is required on the controller to create the GRE tunnel. DellGRE is supported only on Dellcontrollers running ArubaOS 6.4.x.x or later versions. In the Instant UI To configure Dell GRE in the UI: 1. Click the More > VPN link at the top right corner of the Instant UI. The Tunneling window is displayed. 2. Select Aruba GRE from the Protocol drop-down list. 3. Enter the IP address or FQDN for the main VPN/IPSec endpoint in the Primary host field. 4. Enter the IP address or FQDN for the backup VPN/IPSec endpoint in the Backup host field. This entry is optional. When you enter the primary host IP address and backup host IP address, other fields are displayed. 5. Specify the following parameters. A sample configuration is shown in Figure 53. 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 VPN tunnel switches to the primary host after the specified hold time. The default value for Hold time is 600 seconds. c. To allow the W-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 W-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 VPN tunnel 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 WIAP can verify if an active VPN connection is available. The default value is 5 seconds, which means that the W-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 W-IAP can determine that the VPN connection 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 W-IAP to the VPN/GRE Endpoint rather than the tunnels created just from the master W-IAP. When enabled, the traffic to the corporate network is sent through a Layer-2 GRE tunnel from the W-IAP itself and need not be forwarded through the master W-IAP. 230 | VPN Configuration Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide

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230
| VPN Configuration
Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide
(host)(config-tunnel)# tunnel destination <AP-IP>
(host)(config-tunnel)# trusted
(host)(config-tunnel)# tunnel vlan <allowed-VLAN>
Configuring Dell GRE Parameters
The automatic GRE feature uses the IPSec connection between the W-IAP and controller to send the control
information for setting up a GRE tunnel. When automatic GRE configuration is enabled, a single IPSec tunnel
between the W-IAP cluster and the controller, and one or several GRE tunnels are created based on the Per-AP
tunnel configuration on the W-IAP. For Dell GRE, no manual configuration is required on the controller to
create the GRE tunnel.
DellGRE is supported only on Dellcontrollers running ArubaOS 6.4.x.x or later versions.
In the Instant UI
To configure Dell GRE in the UI:
1. Click the
More
>
VPN
link at the top right corner of the Instant UI. The
Tunneling
window is displayed.
2. Select
Aruba GRE
from the
Protocol
drop-down list.
3. Enter the IP address or FQDN for the main VPN/IPSec endpoint in the
Primary host
field.
4. Enter the IP address or FQDN for the backup VPN/IPSec endpoint in the
Backup host
field. This entry is
optional. When you enter the primary host IP address and backup host IP address, other fields are
displayed.
5. Specify the following parameters. A sample configuration is shown in
Figure 53
.
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 VPN tunnel switches to the primary host after the specified hold time.
The default value for
Hold time
is 600 seconds.
c.
To allow the W-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 W-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 VPN tunnel 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 W-
IAP can verify if an active VPN connection is available. The default value is 5 seconds, which means that
the W-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
W-IAP can determine that the VPN connection 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 W-IAP to the VPN/GRE Endpoint rather than the tunnels
created just from the master W-IAP. When enabled, the traffic to the corporate network is sent through
a Layer-2 GRE tunnel from the W-IAP itself and need not be forwarded through the master W-IAP.