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Cisco GGSN Release 9.0 Configuration GuideCisco IOS Release 12.4(22)YE1 Cisco Service and Application Module for IP, Cisco 7600 Series Internet Router Platform First published July 2010 Last updated June 2011

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OL-19936-02

C O N T E N T S

About This Book 15

C H A P T E R 1 Overview of GPRS and UMTS 1

Overview 1

Benefits 5

Features Introduced in Cisco IOS Release 12.4(22)YE1 5

Layer 3 Geographical Redundancy 6

Passive Route Suppression 6

Features Introduced in Cisco IOS Release 12.4(22)YE 6

Granular Charging and Storage 7

GRX Traffic Segregation 7

Gx Interface 8

Gy Interface 8

Lawful Intercept 9

Proxy-CSCF Load Balancing 9

Standalone GGSN Prepaid Quota Enforcement 10

Enhancements 10

Debugging 10

DFP Weight 11

HSPA QoS Extensions 11

MIBs 12

Multiple Subnets Behind the Mobile Station 12

Statistics 12

Features Introduced in Prior Releases 13

C H A P T E R 2 Planning to Configure the GGSN 1

Prerequisites 1

Before You Begin 1

Platform Prerequisites 2

Required Hardware and Software 2

Required Base Configuration 3

Restrictions 9

Additional References 11

3Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1

Contents

Balancing

Related Documents 11

Standards 11

MIBS 12

RFCs 12

Technical Assistance 12

C H A P T E R 3 Configuring GTP Services on the GGSN 1

GTP Overview 1

Configuring GGSN Services 2

GGSN Services Configuration Task List 2

Enabling GGSN Services 2

Creating a Loopback Interface 3

Creating a Default GTP Virtual Template Interface for the GGSN 3

Enabling CEF Switching 4

Configuring Echo Timing on a GGSN 4

Overview of the Echo Timing on the GGSN 5

Overview of the Default Echo Timer 5

Overview of the Dynamic Echo Timer 7

Echo Timing Configuration Task List 10

Customizing the Default Echo Timer 10

Configuring the Dynamic Echo Timer 11

Disabling the Echo Timer 12

Verifying the Echo Timing Configuration 12

Verifying Echo Timing Parameters 12

Verifying the Dynamic Echo Timer by GTP Path 13

Customizing the GGSN Configuration 14

Configuring GTP Signaling Options 15

Configuring Other GTP Signaling Options 15

Configuring the Maximum Number of PDP Contexts on the GGSN 16

Configuring the Maximum Number of PDP Contexts When Using DFP with Load 17

Controlling Sessions on the GGSN 17

Configuring Session Timers 18

Deleting Sessions on the GGSN 23

Configuring Flow Control for GTP Error Messages 24

Configuring the GGSN to Maintain a History for Deleted SGSN Paths 25

Suppressing Echo Requests per SGSN 25

Configuring Support for GGSN-Initiated Update PDP Context Requests 26


Contents

Using the Service-Mode Function 27

Configuring Global Maintenance Mode 27

Configuring APN Maintenance Mode 28

Configuring Charging Maintenance Mode 30

Monitoring and Maintaining GTP on the GGSN 31

Configuration Examples 32

GGSN Configuration Example 32

Dynamic Echo Timer Configuration Example 34

C H A P T E R 4 Configuring IPv6 PDP Support on the GGSN 35

IPv6 PDPs on the GGSN Overview 35

Supported Features 38

Restrictions 38

Implementing IPv6 PDP Support on the GGSN 39

Enabling the Forwarding of IPv6 Traffic on the GGSN 39

Configuring an IPv6 Base Virtual Template Interface 40

Enabling IPv6 Support on an APN 42

Configuring a Local IPv6 Prefix Pool 44

Configuring an IPv6 Access Control List 45

Configuring Additional IPv6 Support Options 47

Monitoring and Maintaining IPv6 PDPs 47

Configuration Example 48

C H A P T E R 5 Configuring GGSN GTP Session Redundancy 1

GTP-SR Overview 1

Prerequisites 5

Limitations and Restrictions 5

Enabling GTP Session Redundancy 6

Configuring the GTP Session Redundancy Interdevice Infrastructure 7

Configuring HSRP 7

Enabling Interdevice Redundancy 12

Configuring the Interdevice Communication Transport 12

Configuring Passive Route Suppression on an Interface 14

Enabling GTP-SR on the GGSN 15

Disabling GTP Session Redundancy 15

Configuring Charging-Related Synchronization Parameters 16

Monitoring and Maintaining GTP-SR 18

Upgrading GGSN Images in a GTP-SR Environment 18


Contents


Local GTP-SR Examples 19

Primary Supervisor Configuration Example 19

Primary GGSN Configuration Example 21

Secondary GGSN Configuration Example 23

Geographical GTP-SR Examples 24

GGSN Interface Configuration Examples 25

Supervisor Routing Configuration Examples 26

GGSN Routing Configuration Examples 26

C H A P T E R 6 Configuring Charging on the GGSN 1

Configuring an Interface to the Charging Gateway 2

Verifying Interface Configuration to the Charging Gateway 2

Configuring the Default Charging Gateway 4

Configuring the GGSN to Switchover to the Highest Priority Charging Gateway 4

Changing the Default Charging Gateway 5

Configuring a Charging Source Interface 5

Configuring the GGSN Memory Threshold 6

Configuring the Transport Protocol for the Charging Gateway 7

Configuring TCP as the Charging Gateway Path Protocol 7

Configuring UDP as the Charging Gateway Path Protocol 7

Configuring the Charging Release 8

Configuring Charging for Roamers 8

Configuring PLMN IP Address Ranges 9

Enabling Charging for Roamers 10

Customizing the Charging Options 10

Disabling Charging Processing 14

Using Charging Profiles 14

Configuring a Charging Profile 15

Defining the Charging Characteristics and Triggers of the Charging Profile 16

Applying a Default Charging Profile to an APN 18

Applying a Global Default Charging Profile 19

Configuring How the GGSN Handles PDPs with Unmatched Charging Profiles 19


Contents

ting

Configuring G-CDR Backup and Retrieval using iSCSI 19

iSCSI Overview 20

Configuring iSCSI Backup and Storage on the GGSN 20

Configuring an iSCSI Target Profile 22

Associating an iSCSI Target Profile 23

Verifying the iSCSI Session 23

Monitoring and Maintaining iSCSI G-CDR Backup and Storage 23

Configuring Granular Charging and Storage 24

Configuring a Charging Group 25

Associating a Charging Group with an Access Point 26

Modifying a Charging Group 28

Monitoring and Maintaining Granular Charging 28

Monitoring and Maintaining the Charging Function on the GGSN 29


Global Charging Configuration 29

Charging Profile Configuration 30

Granular Charging and Storage Configuration 31

C H A P T E R 7 Configuring Enhanced Service-Aware Billing 1

Service-Aware GGSN Overview 1

Service-Aware GGSN Data Flows 4

Configuring a Service-Aware GGSN 5

Limitations and Restrictions 5

Enabling Service-Aware Billing Support 6

Enabling Enhanced G-CDRs 6

Configuring the Quota Server Interface 7

Configuring a Cisco CSG2 Server Group 8

Configuring the Quota Server Process on the GGSN 9

Advertising the Next Hop Address For Downlink Traffic 10

Configuring the GGSN to use the Cisco CSG2 as an Authentication and Accoun Proxy 10

Monitoring and Maintaining 12

Configuring Diameter/DCCA Interface Support 12

Configuring the Diameter Base 13

Configuring the DCCA Client Process on the GGSN 18

Enabling Support for Vendor-Specific AVPs in DCCA Messages 22

Configuring the Enhanced Billing Parameters in Charging Profiles 23

Specifying a Default Rulebase ID 23

Specifying a DCCA Client Profile to Use for Online Billing 24


Contents

Suppressing CDRs for Prepaid Users 24

Configuring Trigger Conditions for Postpaid Users 24

GTP-Session Redundancy for Service-Aware PDPs Overview 26

Configuring OCS Address Selection Support 27

Configuring Standalone GGSN Prepaid Quota Enforcement 28

Enabling PPC on an APN 29

Configuration Example 30

C H A P T E R 8 Configuring Network Access to the GGSN 1

Configuring an Interface to the SGSN 1

Verifying the Interface Configuration to the SGSN 2

Configuring a Route to the SGSN 4

Configuring a Static Route to the SGSN 4

Configuring OSPF 5

Verifying the Route to the SGSN 5

Configuring Access Points on the GGSN 7

Overview of Access Points 8

Description of Access Points in a GPRS/UMTS Network 8

Access Point Implementation on the Cisco GGSN 9

Basic Access Point Configuration Task List 10

Configuring the GPRS Access Point List on the GGSN 10

Creating an Access Point and Specifying Its Type on the GGSN 10

Configuring Real Access Points on the GGSN 11

PDN Access Configuration Task List 12

VPN Access Using VRF Configuration Task Lists 13

Configuring Additional Real Access Point Options 20

Verifying the Real Access Point Configuration 26

Configuring Virtual Access Points on the GGSN 31

Overview of the Virtual Access Point Feature 31

Virtual Access Point Configuration Task List 34

Verifying the Virtual Access Point Configuration 36

Configuring Access to External Support Servers 40

Blocking Access to the GGSN by Foreign Mobile Stations 40

Overview of Blocking Foreign Mobile Stations 40

Blocking Foreign Mobile Stations Configuration Task List 41

Configuring the MCC and MNC Values 41

Enabling Blocking of Foreign Mobile Stations on the GGSN 42

Verifying the Blocking of Foreign Mobile Stations Configuration 42

Controlling Access to the GGSN by MSs with Duplicate IP Addresses 43


Contents

Configuring Routing Behind the Mobile Station on an APN 44

Enabling Routing Behind the Mobile Station 44

Verifying the Routing Behind the Mobile Station Configuration 45

Configuring Proxy-CSCF Discovery Support on an APN 47

Creating P-CSCF Server Groups on the GGSN 47

Associating a P-CSCF Server Group with an APN 48

Verifying the P-CSCF Discovery Configuration 48

Monitoring and Maintaining Access Points on the GGSN 49


Static Route to SGSN Example 50

Access Point List Configuration Example 51

VRF Tunnel Configuration Example 52

Virtual APN Configuration Example 53

Blocking Access by Foreign Mobile Stations Configuration Example 56

Duplicate IP Address Protection Configuration Example 57

P-CSCF Discovery Configuration Example 57

C H A P T E R 9 Configuring PPP Support on the GGSN 1

Overview of PPP Support on the GGSN 1

Configuring GTP-PPP Termination on the GGSN 3

Overview of GTP-PPP Termination on the GGSN 3

Benefits 3

Preparing to Configure PPP over GTP on the GGSN 4

GTP-PPP Termination Configuration Task List 4

Configuring a Loopback Interface 5

Configuring a PPP Virtual Template Interface 5

Associating the Virtual Template Interface for PPP on the GGSN 7

Configuring GTP-PPP with L2TP on the GGSN 7

Overview of GTP-PPP with L2TP on the GGSN 7

Benefits 8

Restrictions 8

GTP-PPP With L2TP Configuration Task List 8

Configuring the GGSN as a LAC 9


Contents

PN

Configuring AAA Services for L2TP Support 10

Configuring a Loopback Interface 11


Associating the Virtual Template Interface for PPP on the GGSN 13

Configuring GTP-PPP Regeneration on the GGSN 14

Overview of GTP-PPP Regeneration on the GGSN 14

Restrictions 14

GTP-PPP Regeneration Configuration Task List 15

Configuring the GGSN as a LAC 15

Configuring AAA Services for L2TP Support 17


Associating the Virtual Template Interface for PPP Regeneration on the GGSN 20

Configuring PPP Regeneration at an Access Point 20

Monitoring and Maintaining PPP on the GGSN 21


GTP-PPP Termination on the GGSN Configuration Examples 22

GTP-PPPOverL2TP Configuration Example 24

GTP-PPP Regeneration Configuration Example 25

AAA Services for L2TP Configuration Example 26

C H A P T E R 10 Configuring QoS on the GGSN 1

Overview of QoS Support on the GGSN 1

Configuring UMTS QoS on the GGSN 2

Overview of UMTS QoS 2

Configuring UMTS QoS Task Lists 3

Enabling UMTS QoS Mapping on the GGSN 3

Mapping UMTS QoS Traffic Classes to a DiffServ PHB Group 3

Assigning a DSCP to a DiffServ PHB Group 4

Configuring the DSCP in the Subscriber Datagram 6

Configuring the Cisco 7600 Platform GGSN UMTS QoS Requirements 7

Verifying the UMTS QoS Configuration 10

Configuring the GGSN Default QoS as Requested QoS 12

Configuring Call Admission Control on the GGSN 12

Configuring Maximum QoS Authorization 12

Configuring a CAC Maximum QoS Policy 13

Enabling the CAC Maximum QoS Policy Function and Attaching a Policy to an A 14

Configuring Bandwidth Management 15

Configuring a CAC Bandwidth Pool 15

Enabling the CAC Bandwidth Management Function and Applying a Bandwidth Pool to an APN 15

Cisco GGSN Release 9.0 Configuration GuideContentsAbout This Book