## (area: "diameter")

The _diameter_ area includes all of the MMI APIs required to configure a DSR to be a Diameter Relay Agent (DRA). Diameter routing entities like Local Nodes, Peer Nodes, Connections, Route Groups, and Route Lists are all part of the diameter area. Also included is IPFE configuration, which is used to load balance Diameter Connections across a set of DA-MPs.

The discussion of the various patterns (create, update, delete) given in the [*Introduction & Overview*](#Introduction---Overview) section is highly relevant to the diameter area. Individual Managed Objects and collections of MOs are accessed by the client using the APIs defined for each core Diameter resource. Any operation that completes successfully returns a 2XX HTTP code, while unsuccessful operations return a 4XX HTTP code.
