Digi TX54 User Manual page 523

Virtual Private Networks (VPN)
8. Determine whether the interface should fail over based on the failure of one of the test targets,
or all of the test targets:
(config vpn l2tp lac lac_tunnel)> surelink success_condition value
(config vpn l2tp lac lac_tunnel)>
Where value is either one or all.
9. Set the number of probe attempts before the WAN is considered to have failed:
(config vpn l2tp lac lac_tunnel)> surelink
(config vpn l2tp lac lac_tunnel)>
The default is 3.
10. Set the amount of time that the device should wait for a response to a probe attempt before
considering it to have failed:
(config vpn l2tp lac lac_tunnel)> surelink timeout 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 timeout 600s
(config vpn l2tp lac lac_tunnel)>
The default is 15 seconds.
11. Configure test targets:
a. Add a test target:
(config vpn l2tp lac lac_tunnel)> add surelink target end
(config vpn l2tp lac lac_tunnel surelink target 0)>
b. Set the test type:
(config vpn l2tp lac lac_tunnel surelink target 0)> test value
(config vpn l2tp lac lac_tunnel surelink target 0)>
where value is one of:
n
TX54 User Guide
ping: Tests connectivity by sending an ICMP echo request to a specified hostname
or IP address.
Specify the hostname or IP address:
l
(config vpn l2tp lac lac_tunnel surelink target 0)> ping_host
host
(config vpn l2tp lac lac_tunnel surelink target 0)>
(Optional) Set the size, in bytes, of the ping packet:
l
attempts num
L2TP
523