Subscriber Information Collector Overview
The subscriber information collector (SIC) is used to manage the dynamic services on RADIUS-enabled devices. To manage dynamic services on RADIUS-enabled devices, the SIC converts the RADIUS request to Diameter request and vice versa. For information about the SIC dynamic authorization support and managing the dynamic services, see SIC Dynamic Authorization Support Overview and Managing Dynamic Services on RADIUS-Enabled Devices. The SIC listens for RADIUS accounting and authentication messages from IP edge devices (clients), either directly or indirectly through an authentication, authorization, and accounting (AAA) proxy server, allowing the SRC software to gain increased subscriber awareness.
The role of the SIC is to listen for RADIUS accounting and authentication messages and filter undesired events based on attachment session attributes. The SIC is also responsible for sending RADIUS requests to the correct SRC that is managing the MX Series router.
The major components of the SIC are:
RADIUS accounting and authentication listeners, which are configured with port numbers and parameters controlling receipt of UDP packets.
A collection of RADIUS dictionaries.
A collection of network access server (NAS) accounting and authentication clients.
A collection of RADIUS accounting, authentication, and dynamic authorization targets.
A collection of accounting and authentication routing rules.
A collection of editing rules.
A collection of RADIUS network elements. A RADIUS network element contains an ordered list of RADIUS accounting and authentication clients, RADIUS accounting, authentication, and dynamic authorization targets, along with a failover policy for targets.
A proxy accounting method that forwards accounting events to a downstream AAA server (network element).
A collection of authentication and dynamic authorization routing targets. Authentication requests are routed to a downstream AAA RADIUS server for authentication. Dynamic authorization requests are routed to the NAS device in the upstream network element.
A SIC Diameter server that translates dynamic authorization requests (Change of Authorization [COA] and Disconnect Message [DM] requests) into vendor-specific attributes so that they can be understood by the NAS. The SIC Diameter server communicates with the SRC Diameter server for NAS routing information.
Components supporting SNMP, statistics, and event logging.