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Cisco GGSN Configuration Guide
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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
Americas HeadquartersCisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706 USAhttp://www.cisco.comTel: 408 526-4000
800 553-NETS (6387)Fax: 408 527-0883
Customer Order Number: OL-19936-02
http://www.cisco.com,
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All other trademarks mentioned in this document or website are the property of their respective owners. The use of the word partner does not imply a partnership relationshipbetween Cisco and any other company. (0903R))
Copyright ' 2009, Cisco Systems, Inc. All rights reserved
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
4Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
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
5Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
Contents
Configuration Examples 18
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
6Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
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
Configuration Examples 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
7Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
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
8Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
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
Configuration Examples 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
9Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
Contents
PN
Configuring AAA Services for L2TP Support 10
Configuring a Loopback Interface 11
Configuring a PPP Virtual Template Interface 12
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
Configuring a PPP Virtual Template Interface 18
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
Configuration Examples 22
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
10Cisco GGSN Release 9.0 Configuration Guide, Cisco IOS Release 12.4(22)YE1
Cisco GGSN Release 9.0 Configuration GuideContentsAbout This Book