Session Subsystem - Cisco ASR 5500 Administration Manual

Session Subsystem

Session Subsystem
Table 47: Session Subsystem Tasks
Task
sessctrl
sessmgr
ASR 5500 System Administration Guide, StarOS Release 19
328
Description Function
Session Controller Created at StarOS start-up. Only one Session Controller
instantiated in the system at any time.
Acts as the primary point of contact for the Session
Subsystem. Since it is aware of the other subsystems running
within the system, the Session Controller acts as a proxy for
the other components, or tasks, that make up the subsystem.
Starts, configures, and coordinates the efforts of the Session
Processing Subsystem sub-managers.
Works with Resource Manager to start new Session Managers
when all existing Session Managers exceed their capacity.
Receives context information from VPN Managers.
Distributes IP interface address information to other Session
Processing Subsystem sub-managers.
Manages Enhanced Charging Service (ECS), Content
Filtering and URL Blacklisting services.
Session Manager Created by the Session Controller.
Provides a subscriber processing system that supports
multiple session types.
Multiple Session Managers can run on a single CPU and/or
can be distributed throughout any CPU present in the system.
A single Session Manager can service sessions from multiple
A11 Managers, and from multiple contexts.
Processes protocols for A10/A11, GRE, R3, R4, R6,
GTPU/GTPC, PPP, and Mobile IP.
Manages Enhanced Charging Service, Content Filtering and
URL Blacklisting services.
Session Managers are paired with AAA Managers.
StarOS Tasks