2.9.1 Audit Event Bus

Satisfies Req. D1.2-9.5-Trail.

Tentative protocol choice (in order of preference):

1. AMQP [AMQP06]

2. Liberty Accounting Service [AcctSvc] with subscriptions and notifications [SUBS2] and [DesignPat].

3. Diameter [RFC3588]

4. RADIUS [RFC2138]

5. Apache Muse

Whichever transport is chosen, the actual audit records are packaged as OpenXDAS messages (see: openxdas.sourceforge.net).