Cisco ASR 5000 Series Administration Manual page 65

HSGW Configuration
UE
Context (Ctx.)
Interface
Service or
Configuration (Cfg.)
Step 1
A subscriber session from the eAN/PCF is received by the HSGW service over the A10/A11 interface.
Step 2
The HSGW service determines which context to use to provide AAA functionality for the session. This process is
described in the How the System Selects Contexts section located in the Understanding the System Operation and
Configuration chapter of the System Administration Guide.
Step 3
The AAA group is configured with the Diameter endpoint for the STa interface to the AAA server which is used to
authenticate and authorize the subscriber and session.
Step 4
The system completes the Diameter EAP interactions with the AAA server and receives the subscriber profile on
successful authentication. The subscriber profile contains Access Point Name (APN) profiles that include APNs the
subscriber is authorized to connect to and the P-GW identity/FQDN that serves the APN.
Step 5
Upon successful authentication, the UE begins establishment of PDN connection by sending a Vendor Specific Network
Control Protocol (VSNCP) configuration request including the APN and the IP version capability of the UE.
Step 6
The HSGW uses the configured Gxa Diameter endpoint under the IMS Auth service to establish the gateway control
session for this PDN.
OL-22984-01
3GPP AAA
4
1 5
11
eAN/PCF HSGW
A
HSGW
10
A
Service
11
HSGW
2
Ctx.
G Diameter
x Cfg.
a
AAA Ctx.
6
Local Ctx.
Configuring the System to Perform as a Standalone HSGW ▀
PCRF
7
P-GW
9
10
S
MAG
2
Service
a
MAG
8
Ctx.
Diameter S
Cfg. T
a
3
Cisco ASR 5000 Series HRPD Serving Gateway Administration Guide ▄
Packet Data
Network