Overview

An off-net AlertSC MAP message is being picked up by the RTR, which is relaying it back to the network. In turn, this signal is picked up again by the RTR, which triggers a loop.

Solution

In order to prevent this, the enablealertscrelaying property must be set to false; this property is enabled by default. You can check the current value with the command tp_walk smsPropEnableAlertScRelaying.

Steps:

1. In the common_config.txt file, add the following line (or change the value of the property, if already present):
   enablealertscrelaying="false"
2. Restart all Traffic Elements for the changes to apply.

Testing

After performing the changes, AlertSC messages should no longer be relayed by the RTR, preventing the loop from further occurring.