Diameter User-Name and Realm Based Request Routing Clarifications

Document Type Replaced Internet-Draft (individual)
Last updated 2010-04-12 (latest revision 2008-10-27)
Replaced by draft-ietf-dime-nai-routing
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This specification clarifies the Diameter realm based request routing. We focus on the case where a Network Access Identifier in the User-Name AVP is used to populate the Destination-Realm AVP and the Network Access Identifier contains more than one realm. This particular case is possible when the Network Access Identifier decoration is used to force a routing of request messages through a predefined list of realms. However, this functionality is not unambiguously specified in the Diameter Base Protocol specification.


Jouni Korhonen (jouni.nospam@gmail.com)
Mark Jones (mark.jones@bridgewatersystems.com)
Lionel Morand (lionel.morand@orange.com)
Tina Tsou (tena@huawei.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)