Jan 22, 2010

Diameter on going work

Diameter is rapidly gaining momentum, breaking the mobile network implementations boundaries.
But still Diameter is young and misses some important capabilities and applications needed in order to “fulfill its destiny” and become the signaling protocol for telecommunications – taking full responsibility over control, policy, QoS and AAA and replacing over a dozen legacy protocols that are used today in both wireless and wireline networks and of course the Internet (don’t forget the IETF is the main sponsor of Diameter)

I wanted to share with you some of the important work that is being done by the good people at IETF DIME to add those missing capabilities.
Here are some examples of work that is being standardized:

Defines the Management Information Base (MIB) module needed to manage an implementation of the Diameter protocol.

Some AAA applications require the transport of cryptographic keying material; this work specifies a set of AVP’s providing native Diameter support of cryptographic key delivery.

The Diameter NAT Control Application allows external devices to configure and manage a Large Scale NAT (LSN) device - expanding the existing Diameter-based AAA and policy control capabilities with a NAT control component

The Capabilities Update application is intended to allow the dynamic update of Diameter peer capabilities while the peer-to-peer connection is in the open state.

Specifies the interaction between the Access Gateway and Diameter server for the IKEv2 based on pre-shared secrets.

Describes an extended format for the NAPTR service fields used in dynamic Diameter agent discovery.

RFC 3588 allows a Diameter redirect agent to specify one or more individual hosts to which a Diameter message may be redirected. However, in some circumstances an operator may wish to redirect messages to an alternate domain without specifying individual hosts. This work defines an application by which this can be achieved.

Support for Proxy Mobile IPv6 Mobile Access Gateway (MAG) and Local Mobility Anchor (LMA) routing.

Defines a number of Diameter AVP’s for traffic classification with actions for filtering and Quality of Service (QoS) treatment.

Defines the Management Information Base (MIB) module needed to manage an implementation of the Diameter Credit Control application.


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