Aaa Servers - Cisco ASR 5000 Series Administration Manual

System Operation and Configuration
• Serving GPRS Support Node (SGSN) Services
• Packet Data Serving Node (PDSN) services
• Home Agent (HA) services
• Layer 2 Tunneling Protocol Access Concentrator (LAC) services
• Dynamic Host Control Protocol (DHCP) services
• Mobility Management Entity (MME) Services
• PDN Gateway (P-GW) Services
• Serving Gateway (S-GW) Services
• Intelligent Policy Control Function (IPCF) Services (PCC-Service, PCC-Policy, PCC-AF)

AAA Servers

Authentication, Authorization and Accounting (AAA) servers store profiles, perform authentication, and
maintain accounting records for each mobile data subscriber. The AAA servers communicate with the system
over an AAA interface. The system supports the configuration of up to 128 interfaces to AAA servers.
It is important to note that for Mobile IP, there can be Foreign AAA (FAAA) and Home AAA (HAAA)
servers. FAAA servers typically reside in the carrier's network. HAAA servers could be owned and controlled
by either the carrier or the home network. If the HAAA server is owned and controlled by the home network,
accounting data is transferred to the carrier via an AAA proxy server.
Important
Subscribers
Subscribers are the end-users of the service; they gain access to the Internet, their home network, or a public
network through the system.
There are three primary types of subscribers:
• RADIUS-based Subscribers: The most common type of subscriber, these users are identified by their
Mobile IP support depends on the availability and purchase of a license bundle that includes Home Agent
(HA).
International Mobile Subscriber Identity (IMSI) number, an Electronic Serial Number (ESN), or by their
domain name or user name. They are configured on and authenticated by a RADIUS AAA server.
Upon successful authentication, various attributes that are contained in the subscriber profile are returned.
The attributes dictate such things as session parameter settings (for example, protocol settings and IP
address assignment method), and what privileges the subscriber has.
Attribute settings received by the system from a RADIUS AAA server take precedence
Important
over local-subscriber attributes and parameters configured on the system.
ASR 5500 System Administration Guide, StarOS Release 21.4
Subscribers
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