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Virtual Private Networks (VPN)
Depending on your device configuration, you may be presented with an Access selection
menu. Type admin to access the Admin CLI.
2. At the command line, type config to enter configuration mode:
> config
(config)>
3. Create a new PPP-over-L2TP access concatenator , or edit an existing one:
To create a new PPP-over-L2TP access concatenator , see
n
tunnel.
To edit an existing PPP-over-L2TP access concatenator , change to the PPP-over-L2TP
n
access concatenator node in the configuration schema. For example, for an PPP-over-
L2TP access concatenator named lac_tunnel, change to the lac_tunnel node in the
configuration schema:
(config)> vpn l2tp lac lac_tunnel
(config vpn l2tp lac lac_tunnel)>
4. Enable active recovery:
(config vpn l2tp lac lac_tunnel)> surelink enable true
(config vpn l2tp lac lac_tunnel)>
5. To configure the device to restart the interface when its connection is considered to have
failed:
(config vpn l2tp lac lac_tunnel)> surelink restart true
(config vpn l2tp lac lac_tunnel)>
This is useful for interfaces that may regain connectivity after restarting, such as a cellular
modem.
6. To configure the device to reboot when the interface is considered to have failed:
(config vpn l2tp lac lac_tunnel)> surelink reboot enable
(config vpn l2tp lac lac_tunnel)>
7. Set the Interval between connectivity tests:
(config vpn l2tp lac lac_tunnel)> surelink interval value
(config vpn l2tp lac lac_tunnel)>
where value is any number of weeks, days, hours, minutes, or seconds, and takes the format
number{w|d|h|m|s}.
For example, to set interval to ten minutes, enter either 10m or 600s:
(config vpn l2tp lac lac_tunnel)> surelink interval 600s
(config vpn l2tp lac lac_tunnel)>
The default is 15 minutes.
8. Determine whether the interface should fail over based on the failure of one of the test targets,
or all of the test targets:
IX30 User Guide
L2TP
Configure a PPP-over-L2TP
461
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