RFC 6733 (formerly known as 3588 bis) documents the latest Diameter protocol specifications and was released at the end of 2012 by the Internet Engineering Task Force (IETF). The release of this new standard makes the previous RFC 3588 (Diameter base protocol) and 5719 obsolete. Diameter is the base protocol for authentication, authorization, and accounting (AAA), enabling network access and IP mobility in both home and roaming mobile LTE networks.
This latest version of the Diameter base protocol defined in RFC 6733 is a positive step in developing Diameter signaling protocol, the central nervous system for LTE and next-generation networks. The upgrades were based on specific needs and requirements of telco operators.
Some of the improvements in this new version include:
There will be other releases, as the standardization process is not yet complete.