Origins are creation time parameters in the Diameter node CLI configuration. Multiple unique diameter nodes can be instantiated within the same SR node.
config>aaa>diam#
node <origin-host-string> [origin-realm <origin-realm-string>]
Applications (NASREQ, Gx, and Gy) are associated with the Diameter node (and the origins) through the diameter-application-policy:
config>subscr-mgmt>diam-appl-plcy#
diameter-node <origin-host-string> destination-realm <destination-realm-string>
The destination-realm referenced in the Diameter node above is used to populate the destination-realm AVP in the application level request messages. This destination realm can be optionally learned from the incoming application level messages and any newly learned value overwrites the previous one. This learning is performed on a per-message basis.