Diameter Maintenance and Extensions

Document Charter Diameter Maintenance and Extensions WG (dime)
Title Diameter Maintenance and Extensions
Last updated 2012-08-21
State Approved
WG State Active
IESG Responsible AD Ben Campbell
Charter Edit AD (None)
Send notices to (None)


The Diameter Maintenance and Extensions WG will focus on maintenance and
extensions to the Diameter protocol required to enable its use for
authentication, authorization, accounting, charging in network access,
provisioning of configuration information within the network, and for
new AAA session management uses within the extensibility rules of the
Diameter base protocol.

The DIME working group plans to address the following items:

- Maintaining and/or progressing, along the standards track, the
  Diameter Base protocol and Diameter Applications. This includes
  extensions to Diameter Base protocol that can be considered as
  enhanced features or bug fixes.

- Diameter application design guideline. This document will provide
  guidelines for design of Diameter extensions. It will detail when to
  consider reusing an existing application and when to develop a new

- Protocol extensions for bulk and grouped AAA session management. The
  aim of this work is to study and standardize a solution for handling
  groups of AAA sessions within the Diameter base protocol context. The
  solution would define how to identify and handle grouped AAA sessions
  in commands and operations.

- Diameter overload control. The aim of this work is to identify the
  limitations of the Diameter protocol level overload control provided
  by the current Diameter Base protocol. A set of requirements will be
  provided to define a new Diameter level overload control mechanism.

Additionally, Diameter-based systems require interoperability in order
to work. The working group, along with the AD, will need to evaluate any
potential extensions and require verification that the proposed
extension is needed, and is within the extensibility rules of Diameter
and AAA scope. Coordination with other IETF working groups and other
SDOs (e.g. 3GPP) will be used to ensure this.