Configuring ISG as a RADIUS Proxy
How to Configure ISG as a RADIUS Proxy
4
3GPP Attribute Support
In GGSN environments ISG RADIUS proxy must understand and parse the Third Generation
Partnership Project (3GPP) attributes described in Table 1. These attributes form part of the accounting
requests.
Benefits of ISG RADIUS Proxy
Use of ISG RADIUS Proxy has the following benefits:
• Allows the complete set of ISG functionality to be applied to EAP subscriber sessions.
• Allows an ISG device to be introduced into a network with minimum disruption to the existing
network access server (NAS) and AAA servers.
• Simplifies RADIUS server configuration because only the ISG, not every access point, must be
configured as a client.
How to Configure ISG as a RADIUS Proxy
This section contains the following procedures:
• Initiating ISG RADIUS Proxy IP Sessions, page 5 (required)
• Configuring ISG RADIUS Proxy Global Parameters, page 6 (required)
• Configuring ISG RADIUS Proxy Client-Specific Parameters, page 8 (optional)
• Defining an ISG Policy for RADIUS Proxy Events, page 10 (required)
• Verifying ISG RADIUS Proxy Configuration, page 11 (optional)
• Clearing ISG RADIUS Proxy Sessions, page 12 (optional)
Table 1 3GPP Attributes Supported by ISG RADIUS Proxy
Attribute Description Vendor ID/type
3GPP-IMSI The International Mobile Subscriber Identity
(IMSI) for the user.
10415/1
3GPP-Charging-Id The charging ID for this Packet Data Protocol
(PDP) context (this together with the GGSN
address constitutes a unique identifier for PDP
context).
10415/2
3GPP-SGSN-Address The Serving GPRS Support Node (SGSN) address
that us used by the GPRS Tunneling Protocol
(GTP) control plane for handling of control
messages. It may be used to identify the Public
Line Mobile Network (PLMN) to which the user
is attached.
10415/6
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