Mobile Ip Home And Foreign Agents - Cisco ASR 5000 Series Administration Manual

GGSN Support in GPRS/UMTS Wireless Data Services
The following standards were referenced for the system's LI implementation:
TR-45 Lawfully Authorized Electronic Surveillance TIA/EIA J-STD-025 PN4465 RV 1.7
3GPP TS 33.106 V6.1.0 (2004-06): 3rd Generation Partnership Project; Technical Specification Group Services
and System Aspects; 3G security; Lawful Interception requirements (Release 6)
3GPP TS 33.107 V6.2.0 (2004-06): 3rd Generation Partnership Project; Technical Specification Group Services
and System Aspects; 3G security; Lawful interception architecture and functions (Release 6)
3GPP TS 33.108 V9.0.0 (2009-09): 3rd Generation Partnership Project; Technical Specification Group Services
and System Aspects; 3G security; Handover interface for Lawful Interception (LI) (Release 9)
Technical Directive: Requirements for implementing statutory telecommunications interception measures (TR
TKÜ), Version 4.0
LEAs provide one or more TSPs with court orders or warrants requesting the monitoring of a particular target. The
target is identified by information such as their mobile station Integrated Services Digital Network (MSISDN) number,
or their International Mobile Subscriber Identification (IMSI) number.
Once the target has been identified, the system, functioning as either a GGSN or HA, serves as an Access Function (AF)
and performs monitoring for both new PDP contexts or PDP contexts that are already in progress. While monitoring, the
system intercepts and duplicates Content of Communication (CC) and/or Intercept Related Information (IRI) and
forwards it to a Delivery Function (DF) over an extensible, proprietary interface. Note that when a target establishes
multiple, simultaneous PDP contexts, the system intercepts CC and IRI for each of them. The DF, in turn, delivers the
intercepted content to one or more Collection Functions (CFs).
Lawful intercept supports TCP transport on node interfaces along with support for IPv6 address link between chassis
and LI server.
On ASR 5000 or higher platforms with StarOS version 9.0 or later, this feature enhanced to allow 20,000 LI targets to
be provisioned as well as monitored.
Caution:
the full target of 20000 LI targets, it is required that the used platform have at least 12 active packet processing cards
installed.
Important:

Mobile IP Home and Foreign Agents

Consolidation of GGSN, HA and/or FA services on the same platform eliminates CapEx and OpEx requirements for
separate network elements and devices under management. Service integration also enables seamless mobility and inter-
technology roaming between 1xEV-DO and UMTS/W-CDMA/GPRS/EDGE radio access networks. This shared
configuration also enables common address pools to be applied across all service types. In addition, this combination of
collapsed services does not create dependencies for Mobile IP client software on the user access device and
consequently does not introduce additional requirements for Mobile IP signaling in the 3GPP radio access network.
This functionality provides the following benefits:
Timely release of Mobile IP resources at the FA and/or HA
OL-22944-02
This capacity improvement impacts performance over various network scenario and in order to reach
For more information on this feature support, refer Lawful Intercept Configuration Guide.
Features and Functionality - Optional Enhanced Feature Software ▀
Cisco ASR 5000 Series Gateway GPRS Support Node Administration Guide ▄