Wide Area Networks (WANs)
TransPort LR User Guide
57
Example WAN failover: DSL to cellular
In this example, WAN, the
dsl
interface is the primary WAN.
cellular1
and
cellular2
interfaces serve
as backups to
dsl
.
IP probing is configured over the DSL interface. A probe packet of size
256
bytes is sent every
10
seconds to the IP host
43.66.93.111
. If no responses are received for
60
seconds, the TransPort LR
device brings the DSL interface down and starts using the
wan2
(
cellular1
) interface.
If the TransPort LR device cannot get a connection on the
cellular2
interface, it attempts to use the
wan3
(
cellular2
) interface. It attempts to switch back to the
wan2
(
cellular1
) interface after
30
minutes (
1800
seconds).
The TransPort LR device continues to send probes out of the DSL interface. If it receives probe
responses for
120
seconds, it reactivates the
wan1
interface and starts using it again as the WAN
interface.
To achieve this WAN interface failover from DSL to the cellular interface, the WAN failover
configuration commands are:
wan 1 interface dsl
wan 1 probe-host 43.66.93.111
wan 1 probe-interval 10
wan 1 probe-size 256
wan 1 timeout 60
wan 1 activate-after 120
wan 2 interface cellular1
wan 2 try-after 1800
wan 3 interface cellular2
Related topics
Wide Area Networks (WANs) on page 52
