Technical Summary
The document sets normative requirements for Diameter overload control
solutions. The existing Diameter mechanisms for an overload control are
not sufficient for a practical solution. The document also goes into
lengths explaining why Diameter overload control functionality is needed
and describes the limitations of the existing mechanisms in the Diameter
Base Protocol.
Working Group Summary
The working group reached a consensus on the document. The discussion
was extensive. Since this document is a requirements document, possible
technical solution space issues are left for future documents and
discussions.
There is an obvious decision point ahead that got quite a bit of attention,
which relates to the dissemination of the overload control information:
whether an explicit overload application is needed for proper end-to-end
signaling semantics or whether everything is piggybacked on top of existing
signaling between adjacent peers in hop-by-hop fashion. However, this is
for the solution space and the requirements document currently allows both
approaches.
Document Quality
The document has greater industry interest behind, specifically from the
cellular industry. Since the document is a requirement document there are
no standardised solutions available yet due to the absence of the protocol
specification. There is definitive interest from both operators and vendors
to have a standard solution for Diameter overload control.
The requirements document has been extensively reviewed by the 3GPP CT4
working group, which is the main AAA protocol group in 3GPP.
Personnel
Jouni Korhonen is the document shepherd.
The responsible area director is Benoit Claise.
No IANA experts required.