If the MRA device gets an MPE-initiated message and the MRA device has a DSR configured, the MRA device will forward the message to the Primary DSR. If the connection to the primary DSR is not available, the MRA device forwards the message to another DSR (if configured). Note that the primary DSR Network Element (NE) should be configured in the Associated NEs list first.
If your system is using DSR for your Diameter routing, use this procedure to associate a DSR network element with an MRA device.
To associate a DSR network element with an MRA: