Policy Routing - Sierra Wireless AirLink RV50 Series User Manual

Rev 1 Dec. 17
7. Set the Tracking Object (Tracking Object 1 or No Tracking Object). Normally,
you would select Tracking Object 1 from the drop-down menu.
8. Under Tracking Object, leave the Enable/Disable Tracking Object set at
Disable until you finish configuring the other Tracking Object fields.
9. Enter the Test IP address (normally an IP address within the Traffic Selection
Criteria Network/Subnet).
10. From the drop-down menu, select the desired Test Interface (normally the
same interface as the primary route). Options are:
· Ethernet 1
· USB
· Cellular
11. Enter the Test Interval in seconds. This is the interval between Tracking
Object Tests.
For most applications, the default values for the Test Interval, Test Timeout,
and Maximum number of retries should be fine.
If you want to change these values, be aware of the following:
· Selecting a short test interval increases network traffic and may lead to
false failures if the network is busy.
· Selecting a long test interval may mean that traffic does not switch to the
secondary route quickly enough when the primary route fails.
· The test interval must be greater than the product of Test Timeout x
Maximum number of Test Retries.
[Test Interval] > [Test Timeout] x [Maximum number of Retries]
12. Enter the Test Timeout in seconds. This is the time to wait for a response. If
this time expires before a response is received, the test attempt fails.
13. Enter the Maximum number of Test Retries. If the first Tracking Object Test
fails, this is the number of times the gateway sends additional test messages
(without receiving a response) before it declares the test as failed and
switches the specified traffic to the backup network.
14. In the Tracking Object field, select Enable.
15. In the RSR field, select Enable.
Note: Alway click Apply after enabling or disabling this feature.
Go to Status > WAN/Cellular to check the RSR Test Result and confirm that
traffic is being sent through the primary route. If the RSR Test Result field
indicates that the Tracking Object Test has failed, validate the connectivity of the
primary path. (A test result of Unknown indicates that the test has not yet run.)

Policy Routing

You can use Policy Routing to configure up to 5 policy routing rules used to
determine the WAN interface over which outbound traffic is sent. When policy
routing is configured, all traffic from the gateway is compared to the rules, in order
of priority. If a match is found the traffic flows over the WAN interface specified by
the rule. If no match is found or the selected interface is not available, the active
WAN interface is used.
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WAN/Cellular Configuration
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