Cisco ASR 5000 Series - How the SGSN Works

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Serving GPRS Support Node (SGSN) Overview

▀ How the SGSN Works

▄ Cisco ASR 5000 Series Product Overview

OL-22938-02

How the SGSN Works

This section illustrates some of the GPRS mobility management (GMM) and session management (SM) procedures the

SGSN implements as part of the call handling process. All SGSN call flows are compliant with those defined by 3GPP

TS 23.060.

First-Time GPRS Attach

The following outlines the setup procedure for a UE that is making an initial attach.

Main Page

Default Chapter4
- Table of Contents4
- About this Guide27
- Conventions Used28
- Contacting Customer Support30
- Common Features32
- License Keys33
- Features and Benefits54
ASR 5000 Hardware Platform Overview69
- Chassis Configurations70
  - Slot Numbering73
    - Rear Slot Numbering for Half-Height Line Cards74
  - Mounting Options75
- Power Filter Units80
- ASR 5000 Application Cards85
- ASR 5000 Line Cards96
- General Application and Line Card Information120
Software Architecture121
- Understanding the Distributed Software Architecture123
  - Subsystems124
Redundancy and Availability Features127
- Service Availability Features128
- Mean Time between Failure and System Availability135
  - System Availability136
- Spare Component Recommendations137
- Management System Overview139
Management System Overview141
- Out-Of-Band Management141
- Command Line Interface142
  - Cli Overview142
- Web Element Manager Application144
ASN Gateway Overview147
- ASN Mobility Management148
- ASN Gateway in a Wimax Network163
- Wimax Network Deployment Configurations169
- ASN Call Procedure Flows171
- CSN Procedure Flows206
  - PMIP4 Session Release208
- Wimax Deployment with Legacy Core Networks210
- Data Tunnel Endpoint Support214
  - Inter-ASNGW Handoff215
    - Supported Standards216
    - Object Management Group (OMG) Standards217
ASN Paging Controller and Location Registry Overview219
- Introduction220
- Description of PC/LR Support222
- Paging Agent (PA)223
- Location Update with Paging Controller Relocation225
- Paging Operation227
- MS Initiated Idle Mode Entry229
- MS Initiated Idle Mode Exit232
- Supported Platforms and Software235
CDMA2000 Wireless Data Services237
- Product Description238
- Product Specifications239
- Features and Functionality—Base Software241
- RADIUS Support242
- Features and Functionality - Optional Enhanced Software Features252
- CDMA2000 Data Network Deployment Configurations260
  - Co-Located Deployments261
- Understanding Simple IP and Mobile IP263
GGSN Support in GPRS/UMTS Wireless Data Services283
- Product Description284
- Product Specification285
- Operating System Requirements286
- Network Deployment and Interfaces287
- Supported Interfaces288
- Features and Functionality - Base Software291
- SGSN Support292
  - ANSI T1.276 Compliance293
  - Bulk Statistics Support294
- Direct Tunnel Support295
- Dhcp Support296
- DSCP Marking297
- Host Route Advertisement298
  - IP Policy Forwarding299
  - Ipv6 Support300
  - Management System Overview301
  - Overlapping IP Address Pool Support303
- Per APN Configuration to Swap out Gn to Gi APN in Cdrs304
- Quality of Service Support305
- RADIUS VLAN Support306
- Routing Protocol Support307
- Support of Charging Characteristics Provided by AAA Server308
- Support of All GGSN Generated Causes for Partial G-CDR Closure309
- Features and Functionality - Optional Enhanced Feature Software311
- Converged DSL Support on the GGSN312
- GRE Protocol Interface Support313
  - Gx Interface Support314
  - Inter-Chassis Session Recovery315
  - IP Security (Ipsec)317
    - Ipv6 Support318
    - L2TP LAC Support319
  - L2TP LNS Support320
  - Mobile IP Home and Foreign Agents321
  - Mobile IP NAT Traversal322
  - Multimedia Broadcast Multicast Services Support323
  - Session Persistence324
  - Session Recovery Support325
  - Traffic Policing and Rate Limiting326
  - Web Element Management System327
- How GGSN Works329
  - Dynamic IP Address Assignment330
  - Subscriber Session Call Flows331
HA Overview357
- Product Specifications358
- Operating System Requirements359
- Supported Standards360
- Network Deployment Configurations364
- Understanding Mobile IP373
HRPD Serving Gateway Overview375
- Ehrpd Network Summary376
- Ehrpd Network Components377
- E-UTRAN EPC Network Components378
- Serving Gateway (S-GW)379
- Product Description381
- Basic Features382
- Call/Session Procedure Flows411
IP Services Gateway Overview423
- Introduction424
- Service Modes425
  - RADIUS Proxy426
- In-Line Services428
- Enhanced Feature Support429
  - Content Service Steering430
Packet Data Interworking Function Overview431
- Product Description432
- Product Specifications433
- Licenses434
- Interfaces435
- Sample Deployments437
PDG/TTG Overview473
- Product Description474
- Product Specifications475
- Operating System Requirements476
- Network Deployment(S) and Interfaces477
- PDG/TTG Logical Network Interfaces (Reference Points)478
- Features and Functionality479
- Features Not Supported in this Release489
- How the PDG/TTG Works490
  - Supported Standards494
  - IETF References495
PDN Gateway Overview497
- Ehrpd Network Summary498
- Ehrpd Network Components499
- Evolved Packet Control Function (Epcf)500
- SAE Network Summary501
- E-UTRAN EPC Network Components502
- Enodeb503
- Serving Gateway (S-GW)504
- Product Description505
- Product Specifications508
- Operating System Requirements509
- Network Deployment(S)510
  - Supported Logical Network Interfaces (Reference Points)511
  - PDN Gateway in the E-UTRAN/EPC Network517
    - Supported Logical Network Interfaces (Reference Points)518
- Features and Functionality - Base Software523
- Features and Functionality - Inline Service Support547
- How the PDN Gateway Works556
Session Control Manager Overview573
- Product Description574
- IMS Architecture575
- Features and Functionality - Licensed Enhanced Feature Support596
- How the SCM Works603
Serving Gateway Overview611
- Ehrpd Network Summary612
  - Ehrpd Network Components613
    - Evolved Packet Control Function (Epcf)614
- SAE Network Summary615
  - E-UTRAN EPC Network Components616
  - Operating System Requirements623
- Network Deployment(S)624
  - Supported Logical Network Interfaces (Reference Points)625
  - Network Access and Charging Management Features633
- Features and Functionality - External Application Support642
- Features and Functionality - Optional Enhanced Feature Software644
  - Layer 2 Traffic Management (Vlans)645
- How the Serving Gateway Works646
  - Subscriber-Initiated Detach649
- Supported Standards651
  - GPP2 References652
  - Object Management Group (OMG) Standards653
Serving GPRS Support Node (SGSN) Overview655
- Product Description656
- Product Specifications657
  - Operating System Requirements658
    - Benefits of Co-Located Gsns659
- Network Deployments and Interfaces660
  - SGSN/GGSN Deployments661
  - SGSN Logical Network Interfaces662
- Features and Functionality - Basic666
  - SS7 Support667
Mobility Management668
- Paging669
- Features and Functionality - Enhanced and Licensed683
- How the SGSN Works690
- Supported Standards697
  - ITU Standards699
    - Content Filtering Support Overview701
    - Introduction702
- Supported Platforms and Products703
- Licenses704
- URL Blacklisting Support705
  - URL Blacklisting Solution Components706
  - Web Element Manager (WEM)707
    - URL Blacklisting Action708
- Category-Based Content Filtering Support709
- How URL Blacklisting and Category-Based Content Filtering Work Concurrently720
- Content Filtering Server Group Support721
- External Storage System723
- Minimum System Requirements and Recommendations724
  - Additional Requirements on Chassis725
Enhanced Charging Service Overview727
- Introduction728
  - Supported Accounting and Charging Interfaces730
- Licensing732
- ECS Architecture733
- How ECS Works734
- Enhanced Services in ECS742
- ECS Deployment751
  - Accounting Interfaces752
  - Diameter Accounting and Credit Control753
- Charging Record Generation760
- Charging Methods and Interfaces762
- Prepaid Billing in ECS764
- Credit Control Application (CCA) in ECS765
- Postpaid Billing in ECS767
  - Postpaid Billing in CDMA-2000 Networks769
  - External Storage System771
- System Resource Allocation772
- Redundancy Support in ECS773
  - Inter-Chassis Session Recovery Interoperability774
  - Impact on Xdr File Content775
External Storage System Overview777
- Overview778
- Local, Short-Term External Storage System779
- System Requirements781
  - Minimum System Recommendations for Cluster Deployment of L-ESS782
GTPP Storage Server Overview785
- Product Description786
- System Requirements and Recommendations787
  - Default Ports for GSS788
  - GSS Hardware Sizing and Provisioning Guidelines789
- IP Multipathing (IPMP) on GSS Server (Optional)790
- Features of the GSS791
- How the GSS Works802
MUR Overview803
- Introduction804
- Exporting Reports to Other File Formats807
- MUR Architecture808
- Distributed Architecture of MUR811
  - How RDP Works with MUR812
- MUR Deployment814
- System Requirements815
Network Address Translation Overview817
- Supported Platforms and Products818
- Licenses819
- Supported Standards820
- NAT Feature Overview821
- How Nat Works836
- Product Specification853
- Operating System Requirements854
- Network Deployment and Interfaces855
- Features and Functionality - Licensed Enhanced Feature Software873
- How MME Works880
Peer-To-Peer Overview891
- Supported Platforms and Products892
- Licenses893
- P2P Overview894
  - P2P Voice Call Duration898
    - P2P Protocol Detection Software Versions899
    - Loading and Unloading P2P Signature File900
- How P2P Works901
  - P2P Session Recovery902
    - Skype903
    - Jabber904
Personal Stateful Firewall Overview907
- Supported Platforms and Products908
- Licenses909
- Overview910
- Supported Features911
- How Personal Stateful Firewall Works917
  - MID-Session Firewall Policy Update918
- Understanding Rules with Stateful Inspection922
  - Transport and Network Protocols and States923
  - Application-Level Traffic and States924
Web Element Manager Overview927
- Supported Features928
- Accounting Management929
- Performance Management930
- Additional Features932
- Web Element Manager System Requirements933
  - Client Access934
- WEM Architecture935
Technical Specifications943
- Physical Dimensions944
- Power Specifications947
- Mounting Requirements948
- Interface Specifications950
Safety, Electrical, and Environmental Certifications967
- Federal Communications Commission Warning968
- Safety Certifications969
- Electrical Certifications970
- Environmental Certifications971
Environmental Specifications973
- Environmental Information974
  - Chassis Air Flow975
Glossary977

Cisco ASR 5000 Series - How the SGSN Works

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