Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
Understanding System Operation and Configuration
▀ Terminology
▄ Cisco ASR 5000 Series System Administration Guide
OL-22970-01
AAA Servers
For most configurations, AAA servers are used to store profiles, perform authentication, and maintain accounting
records for each mobile data subscriber. The AAA servers communicate with the system over the AAA interface. The
system supports the configuration of up to 128 AAA servers.
records for each mobile data subscriber. The AAA servers communicate with the system over the AAA interface. The
system supports the configuration of up to 128 AAA servers.
It is important to note that for Mobile IP, there can be foreign AAA (FAAA) and home AAA (HAAA) servers. The
FAAA server(s) typically resides in the carrier‘s network. The HAAA server(s) 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 a AAA proxy server.
FAAA server(s) typically resides in the carrier‘s network. The HAAA server(s) 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 a AAA proxy server.
I
MPORTANT
:
Mobile IP support depends on the availability and purchase of a standalone HA license or a license
bundle that includes HA.
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:
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
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.
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.
attributes dictate such things as session parameter settings (for example, protocol settings and IP address
assignment method), and what privileges the subscriber has.
I
MPORTANT
:
Attribute settings received by the system from a RADIUS AAA server take
precedence over local-subscriber attributes and parameters configured on the system.
Local Subscribers: These are subscribers, primarily used for testing purposes, that are configured and
authenticated within a specific context. Unlike RADIUS-based subscribers, the local subscriber‘s user profile
(containing attributes like those used by RADIUS-based subscribers) is configured within the context where
they are created.
(containing attributes like those used by RADIUS-based subscribers) is configured within the context where
they are created.
When local subscriber profiles are first created, attributes for that subscriber are set to the system‘s default
settings. The same default settings are applied to all subscriber profiles, including the subscriber named default
which is created automatically by the system for each system context. When configuring local profile
attributes, the changes are made on a subscriber-by-subscriber basis.
settings. The same default settings are applied to all subscriber profiles, including the subscriber named default
which is created automatically by the system for each system context. When configuring local profile
attributes, the changes are made on a subscriber-by-subscriber basis.
I
MPORTANT
:
Attributes configured for local subscribers take precedence over context-level
parameters. However, they could be over-ridden by attributes returned from a RADIUS AAA server.
Management Subscribers: A management user is an authorized user who can monitor, control, and configure
the system through the command-line interface (CLI) or Web Element Manager application. Management is
performed either locally, through the system console port, or remotely through the use of the Telnet or secure
performed either locally, through the system console port, or remotely through the use of the Telnet or secure