Cisco GGSN Release 4.0 Configuration Guide, Cisco IOS Software Release 12.3(2)XB1 - Planning to Configure the GGSN [Cisco IOS Software Releases 12.3 Special and Early Deployments]

Table Of Contents

Planning to Configure the GGSN

Supported Platforms

Prerequisites

Before You Begin

Cisco 7200 Series Platform Prerequisites

Catalyst 6500 / Cisco 7600 Series Platform Prerequisites

Hardware and Software

Required Base Configuration

Restrictions

Supported Standards, MIBs, and RFCs

Related Documents

Planning to Configure the GGSN

This chapter describes information that you should know before configuring a GGSN.

This chapter includes the following sections:

•Prerequisites

•Restrictions

•Supported Standards, MIBs, and RFCs

•Supported Standards, MIBs, and RFCs

•Related Documents

Supported Platforms

Cisco IOS Release 12.3(2)XB and later is supported on the following platforms:

•Cisco 7200 VXR series router

•Catalyst 6500 series switch / Cisco 7600 series Internet router

Prerequisites

Depending on the platform on which you are implementing a GGSN, the prerequisites vary. The sections below list general guidelines to follow before configuring a GGSN in your network:

•Before You Begin

•Cisco 7200 Series Platform Prerequisites

•Catalyst 6500 / Cisco 7600 Series Platform Prerequisites

Before You Begin

Before you begin to configure a GGSN, you should know which networks your mobile users will be allowed to access using the GGSN. Once you identify the networks, you can plan the interfaces to configure for those networks and plan the associated access points to those networks and configure them on the GGSN. For example, you might want to provide user access to the World Wide Web through a PDN, plus access to two private corporate intranets. In this case, you need to set up three access points—one to enable user access to the PDN, and one for each private intranet.

Cisco 7200 Series Platform Prerequisites

In addition to following the general guidelines documented in the "Before You Begin" section, ensure that the following hardware and software requirements are met before implementing a GGSN in a GPRS/UMTS network on the Cisco 7200 series router platform:

•Cisco 7200 VXR router with network processing engine (NPE) models NPE-300 or NPE-400 running Cisco IOS Release 12.2(8)YW and later—(Required)

•Integrated Services Adapter (ISA)—(Optional) Provides IP security protocol (IPSec) support.

Catalyst 6500 / Cisco 7600 Series Platform Prerequisites

In addition to following the general guidelines documented in the "Before You Begin" section, when configuring GGSNs on the Catalyst 6500 series switch / Cisco 7600 series Internet router platform, ensure that requirements outlined in the following sections are met:

•Hardware and Software

•Required Base Configuration

Hardware and Software

Implementing GGSNs in a GPRS/UMTS network on the Catalyst 6500 series switch / Cisco 7600 series Internet router platform requires the following hardware and software:

•Catalyst 6500 series switch / Cisco 7600 series internet router in which a Supervisor Engine 2 (Sup2) with the 512 MB Multilayer Switch Feature Card 2 (MSFC2) is installed and running Cisco IOS Release 12.2(14)ZA1 and later—(Required) Performs routing and/or switching and Cisco IOS GTP SLB functions.

•Additional Supervisor Engine 2 (Sup2) with 512 MB MSFC2—(Optional) Functions as a redundant Supervisor.

•Catalyst 6500 / Cisco 7600 FastEthernet / Gigabit Ethernet port adapter (such as the Catalyst 6500 48-port 10/100)—(Required) Provides physical connectivity to the GPRS/UMTS network elements such as the SGSN, AAA, and charging gateway (CG).

•Cisco MWAM running the Cisco IOS Release X GGSN feature—(Required) Enables up to 5 instances of a Cisco IOS mobile wireless application, such as a GGSN, to be configured and running on one module. Up to two MWAMs can be installed and configured in a Catalyst 6500 / Cisco 7600 chassis; enabling the configuration of up to 10 GGSNs in one chassis. The interfaces to the IOS instances are Gigabit Ethernet 802.1Q trunk ports which carry VLAN-encapsulated traffic to and from the network through the switched fabric.

•VPN IPSec Module—(Optional) Performs IPSec.

Required Base Configuration

After connectivity has been established from the switch to the different elements in your network, ensure that you complete the following base configuration before implementing and customizing GGSNs on the Cisco MWAM:

1. On the Supervisor / MSFC2, ensure that:

a. A layer-3 routed VLAN for each of the GPRS/UTMS interfaces has been created. Specifically, create a VLAN for the following interfaces:

— Gn VLAN—Interconnects the Gn interfaces.

— Ga VLAN—Interconnects the Ga interfaces.

— AAA/OAM/DHCP VLAN—Interconnects the GGSN interfaces used for AAA, OAM, and DHCP functions.

— One VLAN per APN Gi interface

You can configure the VLANs from VLAN database mode or global configuration mode.

Note You cannot configure extended-range VLANs in VLAN database mode. You can configure extended-range VLANs only in global configuration mode.

Note RPR+ redundancy does not support configurations entered in VLAN database mode. If you have a high-availability configuration with redundant Supervisor modules using RPR(+), configure the VLANs in global configuration mode and not through the VLAN database mode; otherwise, the VLAN information will not be synchronized to the redundant Supervisor module.

To configure a VLAN from global configuration mode:
Sup# configure terminal
Sup(vlan)# vlan222
VLAN222 added:
    Name: VLAN222
Sup(config-vlan)# end
In the examples above, VLAN 222 is a Layer 2-switched VLAN and the subnet associated with it is not known by the MSFC2 routing table. To configure the VLAN222 as a Layer 3 switched VLAN (or routed VLAN), specify a VLAN222 interface on the MSFC2 and assign an IP address to the interface:
Sup# configure terminal
Sup(config)# interface vlan222
Sup(config-if)# ip address n.n.n.n mask
Sup(config-if)# no ip redirects
The following is an example of the VLAN configuration on the MSFC2:
Sup# show running-config
!
. . .
vlan 103,110,160,200,300-301,310 
!
!
interface Vlan103
 description Gn VLAN
 ip address 10.20.21.1 255.255.255.0
 no ip redirects
!
interface Vlan110
 description OAM/AAA/DHCP VLAN
 ip address 10.20.50.1 255.255.255.0
 no ip redirects
!
interface Vlan200
 description Ga Charging VLAN
 no ip address
 no ip redirects
!
interface Vlan310
 description VLAN for APN Internet
 ip address 10.20.51.1 255.255.255.0
For detailed information on configuring VLANs, see the Catalyst 6500 Series Software Configuration Guide.

b. The Cisco IOS software Server Load Balancing (SLB) feature is installed and configured for GTP load balancing. For more information, see the IOS Server Load Balancing feature module and "Configuring Load Balancing on the GGSN" chapter.

c. The Cisco MWAM has been added to each of the VLANs you have created using the mwam module allowed-vlan command. For more information, see the Cisco Multiprocessor WAN Application Module Installation and Configuration Note.

Note VLAN IDs must be consistent be the same in the MSFC2 and Cisco MWAM configurations.

The following is an example of the mwam module allowed-vlan configuration:
!
...
!
mwam module 7 port 1 allowed-vlan 71,95,100,101
mwam module 7 port 2 allowed-vlan 71,95,100,101
mwam module 7 port 3 allowed-vlan 71,95,100,101
!
...
!
d. A static route is configured to each IOS instance configured as a GGSN on the Cisco MWAM:
!
...
!
ip route 10.20.30.1 255.255.255.255 10.20.21.20
ip route 10.20.30.2 255.255.255.255 10.20.21.21
ip route 10.20.30.3 255.255.255.255 10.20.21.22
ip route 10.20.30.4 255.255.255.255 10.20.21.23
ip route 10.20.30.5 255.255.255.255 10.20.21.24
!
...
!
2. On each GGSN instance configured on the Cisco MWAM, ensure that:

a. A static route is configured to the Supervisor/MSFC2.
!
...
!
ip route 0.0.0.0.0 0.0.0.0 10.20.21.1
...
!
b. A subinterface on which 802.1Q encapsulation is enable to each of the VLANs you created on the MSFC2 is configured.

The following is an example of a Ga/Gn subinterface configuration on the GGSN to VLAN103 configured on the MSFC2:
!
...
interface GigabitEthernet0/0.2
 description Ga/Gn Interface
 encapsulation dot1Q 101
 ip address 10.1.1.72 255.255.255.0
 no cdp enable
...
!
For detailed information on configuring:

— Ga subinterfaces, see "Configuring an Interface to the Charging Gateway" section.

— Gn subinterfaces, see "Configuring an Interface to the SGSN" section.

— Gi subinterfaces, see "Configuring an Interface to a PDN" section.

Configuration Example

The following are base configuration examples as the apply to the Supervisor/MSFC2 and the GGSN instance running on the Cisco MWAM.

Supervisor / MSFC2
hostname Cat6500-a
!
boot system flash 
boot device module 7 cf:4
mwam module 7 port 1 allowed-vlan 71,95,100,101
mwam module 7 port 2 allowed-vlan 71,95,100,101
mwam module 7 port 3 allowed-vlan 71,95,100,101
vtp mode transparent
redundancy
 mode rpr-plus
 main-cpu
  auto-sync running-config
  auto-sync standard
!
power redundancy-mode combined
!
!
vlan 1
 vlan1 1002
 vlan2 1003
!
vlan 2
 name SNIFFER
!
vlan 71,95 
!
vlan 100
 name Internal_Gi_for_GGSN-MWAM
!
vlan 101
 name Internal_Gn/Ga
!
vlan 165
!
vlan 302
 name Gn_1
!
vlan 303
 name Ga_1
!
vlan 1002
 vlan1 1
 vlan2 1003
!
vlan 1003
 vlan1 1
 vlan2 1002
 parent 1005
 backupcrf enable
!
vlan 1004
 bridge 1
 stp type ibm
!
vlan 1005
 bridge 1
!
interface FastEthernet8/22
 description To SGSN
 no ip address
 switchport
 switchport access vlan 302
!
interface FastEthernet8/23
 description To CGF
 no ip address
 switchport
 switchport access vlan 302
!
interface FastEthernet8/26
 description To DHCP/RADIUS Servers
 no ip address
 switchport
 switchport access vlan 95
!
interface FastEthernet8/31
 description To BackBone
 no ip address
 switchport
 switchport access vlan 71
!
interface FastEthernet9/32
 description To CORPA
 no ip address
 switchport
 switchport access vlan 165
 no cdp enable
!
!interface Vlan1
 no ip address
 shutdown
!
interface Vlan71
 description VLAN to tftpserver
 ip address 1.7.46.65 255.255.0.0
!
interface Vlan95
 description VLAN for RADIUS and DHCP
 ip address 10.2.25.1 255.255.255.0
!
interface Vlan100
 description Internal VLAN SUP-to-MWAM Gi
 ip address 10.1.2.1 255.255.255.0
!
interface Vlan101
 description VLAN to GGSN for GA/GN
 ip address 10.1.1.1 255.255.255.0
!
interface Vlan165
 description VLAN to CORPA
 ip address 165.1.1.1 255.255.0.0
!
interface Vlan302
 ip address 40.0.2.1 255.255.255.0
!
interface Vlan303
 ip address 40.0.3.1 255.255.255.0
!
router ospf 300
 log-adjacency-changes
 summary-address 9.9.9.0 255.255.255.0
 redistribute static subnets route-map GGSN-routes
 network 40.0.2.0 0.0.0.255 area 300
 network 40.0.3.0 0.0.0.255 area 300
!
ip classless
ip route 9.9.9.72 255.255.255.255 10.1.1.72
ip route 9.9.9.73 255.255.255.255 10.1.1.73
ip route 9.9.9.74 255.255.255.255 10.1.1.74
ip route 9.9.9.75 255.255.255.255 10.1.1.75
ip route 9.9.9.76 255.255.255.255 10.1.1.76
ip route 110.72.0.0 255.255.0.0 10.1.1.72
ip route 110.73.0.0 255.255.0.0 10.1.1.73
ip route 110.74.0.0 255.255.0.0 10.1.1.74
ip route 110.75.0.0 255.255.0.0 10.1.1.75
ip route 110.76.0.0 255.255.0.0 10.1.1.76
!
access-list 1 permit 9.9.9.0 0.0.0.255
!
route-map GGSN-routes permit 10
 match ip address 1
!
GGSN Instance on the Cisco MWAM
service gprs ggsn
!
hostname 6500-7-2
!
ip cef
!
interface Loopback0
 description USED FOR DHCP gateway
 ip address 110.72.0.2 255.255.255.255
!
interface Loopback100
 description GPRS GTP V-TEMPLATE IP ADDRESS
 ip address 9.9.9.72 255.255.255.0
!
interface GigabitEthernet0/0
 no ip address
!
interface GigabitEthernet0/0.1
 description Gi
 encapsulation dot1Q 100
 ip address 10.1.2.72 255.255.255.0
!
interface GigabitEthernet0/0.2
 description Ga/Gn Interface
 encapsulation dot1Q 101
 ip address 10.1.1.72 255.255.255.0
 no cdp enable
!
interface GigabitEthernet0/0.71
 description TFTP or Backbone
 encapsulation dot1Q 71
 ip address 1.7.46.72 255.255.0.0
!
interface GigabitEthernet0/0.95
 description CNR and CAR
 encapsulation dot1Q 95
 ip address 10.2.25.72 255.255.255.0
!
interface Virtual-Template1
 description GTP v-access
 ip unnumbered Loopback100
 encapsulation gtp
 gprs access-point-list gprs
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.1.2.1
ip route 40.1.2.1 255.255.255.255 10.1.1.1
ip route 40.1.3.10 255.255.255.255 10.1.1.1
ip route 40.2.2.1 255.255.255.255 10.1.1.1
ip route 40.2.3.10 255.255.255.255 10.1.1.1
ip route 40.3.2.3 255.255.255.255 10.1.1.1
ip route 40.4.2.3 255.255.255.255 10.1.1.1
!
gprs access-point-list gprs
  access-point 1
   access-point-name CORPA.com
   ip-address-pool dhcp-proxy-client  
   aggregate auto
   dhcp-server 10.2.25.90
   dhcp-gateway-address 110.72.0.2     
!
Restrictions

The number of PDP contexts supported on a GGSN is dependent on the memory and platform in use and the GGSN configuration (for example, whether or not a method of Point to Point Protocol [PPP] has been configured to forward packets beyond the terminal equipment and mobile termination, whether Dynamic Feedback Protocol [DFP] is being used or the memory protection feature is enabled, and the rate of PDP context creation to be supported).

Note DFP weighs PPP PDPs against IP PDPs with one PPP PDP being equals to 8 IP PDPs.

Cisco 7200 Series Router

The following list shows the maximum number of PDP contexts supported on the GGSN according to the memory and Cisco 7206 router series in use when a method of PPP has not been configured:

•Cisco 7206 VXR NPE-300 with 256 Mb RAM—80,000 IP PDP contexts.

•Cisco 7206 VXR NPE-400 router with 512 Mb RAM—135,000 IP PDP contexts.

Catalyst 6500 Series Switch / Cisco 7600 Series Router

The Cisco MWAM can support up to 60,000 IP PDP contexts per GGSN instance with a maximum number of 300,000 IP PDP contexts per MWAM on which five GGSNs are configured.

Supported Standards, MIBs, and RFCs

Standards

Cisco IOS GGSN software release 4.0 supports the following 3GPP standards:

•Release 97/98

–3G TS 03.03

–3G TS 03.60

–3G TS 04.08

–3G TS 09.02

–3G TS 09.60

–3G TS 09.61

–3G TS 12.15

•Release 99

–3G TS 22.107

–3G TS 23.003

–3G TS 23.060

–3G TS 24.008

–3G TS 29.002

–3G TS 29.060

–3G TS 29.061

–3G TS 32.015

The GGSN interfaces comply with the following SMG (Special Mobile Group) standards:

•Ga interface—SMG#28 R99

•Gn interface—SMG#31 R98

MIBs

•CISCO-GGSN-MIB

•CISCO-GGSN-QOS-MIB

•CISCO-GPRS-ACC-PT-MIB

•CISCO-GPRS-CHARGING-MIB

•CISCO-GPRS-GTP-CAPABILITY

•CISCO-GPRS-GTP-MIB

•CISCO-GTP-CAPABILITY

•CISCO-GTP-MIB

•CISCO-GTP-DIRECTOR_MIB

Note The CISCO-GPRS-GTP-CAPABILITY MIB describes the scope of objects supported in the CISCO-GPRS-GTP-MIB. The CISCO-GTP-CAPABILITY MIB describes the scope of objects supported in the CISCO-GTP-MIB.

To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL:

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

RFCs

•RFC 1518, An Architecture for IP Address Allocation with CIDR

•RFC 1519, Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy

•RFC 1661, The Point-to-Point Protocol (PPP)

•RFC 2475, An Architecture for Differentiated Services

Related Documents

Cisco IOS Software Documentation

•Cisco IOS Dial Technologies Configuration Guide, Release 12.2

•Cisco IOS Dial Technologies Command Reference, Release 12.2

•Cisco IOS Interface Configuration Guide, Release 12.2

•Cisco IOS Interface Command Reference, Release 12.2

•Cisco IOS IP Configuration Guide, Release 12.2

•Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services, Release 12.2

•Cisco IOS IP Command Reference, Volume 2 of 3: Routing Protocols, Release 12.2

•Cisco IOS IP Command Reference, Volume 3 of 3: Multicast, Release 12.2

•Cisco IOS Quality of Service Solutions Configuration Guide, Release 12.2

•Cisco IOS Quality of Service Solutions Command Reference, Release 12.2

•Cisco IOS Security Configuration Guide, Release 12.2

•Cisco IOS Security Command Reference, Release 12.2

•Cisco IOS Switching Services Configuration Guide, Release 12.2

•Cisco IOS Switching Services Command Reference, Release 12.2

•Cisco Multi-processor WAN Application Module Installation and Configuration Note

	Cisco GGSN Release 4.0 Configuration Guide, Cisco IOS Software Release 12.3(2)XB1
	Planning to Configure the GGSN
Cisco GGSN Release 4.0 Configuration Guide, Cisco IOS Software Release 12.3(2)XB1 Configuring Network Access to the GGSN Configuring GGSN GTP Services \r\n Configuring Charging on the GGSN \r\n Configuring Dynamic Addressing on the GGSN \r\n Optimizing GGSN Performance on the Cisco 7200 Series Router Platform Overview of GPRS and UMTS \r\n Planning to Configure the GGSN Configuring PPP Support on the GGSN \r\n Configuring QoS on the GGSN Configuring Security on the GGSN Configuring GTP Load Balancing	Download this chapter Planning to Configure the GGSN Download the complete book GGSN 4.0 Configuration Information for Cisco IOS Release 12.3(2)XB1 (PDF - 3 MB) Table Of Contents Planning to Configure the GGSN Supported Platforms Prerequisites Before You Begin Cisco 7200 Series Platform Prerequisites Catalyst 6500 / Cisco 7600 Series Platform Prerequisites Hardware and Software Required Base Configuration Restrictions Supported Standards, MIBs, and RFCs Related Documents Planning to Configure the GGSN This chapter describes information that you should know before configuring a GGSN. This chapter includes the following sections: •Prerequisites •Restrictions •Supported Standards, MIBs, and RFCs •Supported Standards, MIBs, and RFCs •Related Documents Supported Platforms Cisco IOS Release 12.3(2)XB and later is supported on the following platforms: •Cisco 7200 VXR series router •Catalyst 6500 series switch / Cisco 7600 series Internet router Prerequisites Depending on the platform on which you are implementing a GGSN, the prerequisites vary. The sections below list general guidelines to follow before configuring a GGSN in your network: •Before You Begin •Cisco 7200 Series Platform Prerequisites •Catalyst 6500 / Cisco 7600 Series Platform Prerequisites Before You Begin Before you begin to configure a GGSN, you should know which networks your mobile users will be allowed to access using the GGSN. Once you identify the networks, you can plan the interfaces to configure for those networks and plan the associated access points to those networks and configure them on the GGSN. For example, you might want to provide user access to the World Wide Web through a PDN, plus access to two private corporate intranets. In this case, you need to set up three access points—one to enable user access to the PDN, and one for each private intranet. Cisco 7200 Series Platform Prerequisites In addition to following the general guidelines documented in the "Before You Begin" section, ensure that the following hardware and software requirements are met before implementing a GGSN in a GPRS/UMTS network on the Cisco 7200 series router platform: •Cisco 7200 VXR router with network processing engine (NPE) models NPE-300 or NPE-400 running Cisco IOS Release 12.2(8)YW and later—(Required) •Integrated Services Adapter (ISA)—(Optional) Provides IP security protocol (IPSec) support. Catalyst 6500 / Cisco 7600 Series Platform Prerequisites In addition to following the general guidelines documented in the "Before You Begin" section, when configuring GGSNs on the Catalyst 6500 series switch / Cisco 7600 series Internet router platform, ensure that requirements outlined in the following sections are met: •Hardware and Software •Required Base Configuration Hardware and Software Implementing GGSNs in a GPRS/UMTS network on the Catalyst 6500 series switch / Cisco 7600 series Internet router platform requires the following hardware and software: •Catalyst 6500 series switch / Cisco 7600 series internet router in which a Supervisor Engine 2 (Sup2) with the 512 MB Multilayer Switch Feature Card 2 (MSFC2) is installed and running Cisco IOS Release 12.2(14)ZA1 and later—(Required) Performs routing and/or switching and Cisco IOS GTP SLB functions. •Additional Supervisor Engine 2 (Sup2) with 512 MB MSFC2—(Optional) Functions as a redundant Supervisor. •Catalyst 6500 / Cisco 7600 FastEthernet / Gigabit Ethernet port adapter (such as the Catalyst 6500 48-port 10/100)—(Required) Provides physical connectivity to the GPRS/UMTS network elements such as the SGSN, AAA, and charging gateway (CG). •Cisco MWAM running the Cisco IOS Release X GGSN feature—(Required) Enables up to 5 instances of a Cisco IOS mobile wireless application, such as a GGSN, to be configured and running on one module. Up to two MWAMs can be installed and configured in a Catalyst 6500 / Cisco 7600 chassis; enabling the configuration of up to 10 GGSNs in one chassis. The interfaces to the IOS instances are Gigabit Ethernet 802.1Q trunk ports which carry VLAN-encapsulated traffic to and from the network through the switched fabric. •VPN IPSec Module—(Optional) Performs IPSec. Required Base Configuration After connectivity has been established from the switch to the different elements in your network, ensure that you complete the following base configuration before implementing and customizing GGSNs on the Cisco MWAM: 1. On the Supervisor / MSFC2, ensure that: a. A layer-3 routed VLAN for each of the GPRS/UTMS interfaces has been created. Specifically, create a VLAN for the following interfaces: — Gn VLAN—Interconnects the Gn interfaces. — Ga VLAN—Interconnects the Ga interfaces. — AAA/OAM/DHCP VLAN—Interconnects the GGSN interfaces used for AAA, OAM, and DHCP functions. — One VLAN per APN Gi interface You can configure the VLANs from VLAN database mode or global configuration mode. Note You cannot configure extended-range VLANs in VLAN database mode. You can configure extended-range VLANs only in global configuration mode. Note RPR+ redundancy does not support configurations entered in VLAN database mode. If you have a high-availability configuration with redundant Supervisor modules using RPR(+), configure the VLANs in global configuration mode and not through the VLAN database mode; otherwise, the VLAN information will not be synchronized to the redundant Supervisor module. To configure a VLAN from global configuration mode: Sup# configure terminal Sup(vlan)# vlan222 VLAN222 added: Name: VLAN222 Sup(config-vlan)# end In the examples above, VLAN 222 is a Layer 2-switched VLAN and the subnet associated with it is not known by the MSFC2 routing table. To configure the VLAN222 as a Layer 3 switched VLAN (or routed VLAN), specify a VLAN222 interface on the MSFC2 and assign an IP address to the interface: Sup# configure terminal Sup(config)# interface vlan222 Sup(config-if)# ip address n.n.n.n mask Sup(config-if)# no ip redirects The following is an example of the VLAN configuration on the MSFC2: Sup# show running-config ! . . . vlan 103,110,160,200,300-301,310 ! ! interface Vlan103 description Gn VLAN ip address 10.20.21.1 255.255.255.0 no ip redirects ! interface Vlan110 description OAM/AAA/DHCP VLAN ip address 10.20.50.1 255.255.255.0 no ip redirects ! interface Vlan200 description Ga Charging VLAN no ip address no ip redirects ! interface Vlan310 description VLAN for APN Internet ip address 10.20.51.1 255.255.255.0 For detailed information on configuring VLANs, see the Catalyst 6500 Series Software Configuration Guide. b. The Cisco IOS software Server Load Balancing (SLB) feature is installed and configured for GTP load balancing. For more information, see the IOS Server Load Balancing feature module and "Configuring Load Balancing on the GGSN" chapter. c. The Cisco MWAM has been added to each of the VLANs you have created using the mwam module allowed-vlan command. For more information, see the Cisco Multiprocessor WAN Application Module Installation and Configuration Note. Note VLAN IDs must be consistent be the same in the MSFC2 and Cisco MWAM configurations. The following is an example of the mwam module allowed-vlan configuration: ! ... ! mwam module 7 port 1 allowed-vlan 71,95,100,101 mwam module 7 port 2 allowed-vlan 71,95,100,101 mwam module 7 port 3 allowed-vlan 71,95,100,101 ! ... ! d. A static route is configured to each IOS instance configured as a GGSN on the Cisco MWAM: ! ... ! ip route 10.20.30.1 255.255.255.255 10.20.21.20 ip route 10.20.30.2 255.255.255.255 10.20.21.21 ip route 10.20.30.3 255.255.255.255 10.20.21.22 ip route 10.20.30.4 255.255.255.255 10.20.21.23 ip route 10.20.30.5 255.255.255.255 10.20.21.24 ! ... ! 2. On each GGSN instance configured on the Cisco MWAM, ensure that: a. A static route is configured to the Supervisor/MSFC2. ! ... ! ip route 0.0.0.0.0 0.0.0.0 10.20.21.1 ... ! b. A subinterface on which 802.1Q encapsulation is enable to each of the VLANs you created on the MSFC2 is configured. The following is an example of a Ga/Gn subinterface configuration on the GGSN to VLAN103 configured on the MSFC2: ! ... interface GigabitEthernet0/0.2 description Ga/Gn Interface encapsulation dot1Q 101 ip address 10.1.1.72 255.255.255.0 no cdp enable ... ! For detailed information on configuring: — Ga subinterfaces, see "Configuring an Interface to the Charging Gateway" section. — Gn subinterfaces, see "Configuring an Interface to the SGSN" section. — Gi subinterfaces, see "Configuring an Interface to a PDN" section. Configuration Example The following are base configuration examples as the apply to the Supervisor/MSFC2 and the GGSN instance running on the Cisco MWAM. Supervisor / MSFC2 hostname Cat6500-a ! boot system flash boot device module 7 cf:4 mwam module 7 port 1 allowed-vlan 71,95,100,101 mwam module 7 port 2 allowed-vlan 71,95,100,101 mwam module 7 port 3 allowed-vlan 71,95,100,101 vtp mode transparent redundancy mode rpr-plus main-cpu auto-sync running-config auto-sync standard ! power redundancy-mode combined ! ! vlan 1 vlan1 1002 vlan2 1003 ! vlan 2 name SNIFFER ! vlan 71,95 ! vlan 100 name Internal_Gi_for_GGSN-MWAM ! vlan 101 name Internal_Gn/Ga ! vlan 165 ! vlan 302 name Gn_1 ! vlan 303 name Ga_1 ! vlan 1002 vlan1 1 vlan2 1003 ! vlan 1003 vlan1 1 vlan2 1002 parent 1005 backupcrf enable ! vlan 1004 bridge 1 stp type ibm ! vlan 1005 bridge 1 ! interface FastEthernet8/22 description To SGSN no ip address switchport switchport access vlan 302 ! interface FastEthernet8/23 description To CGF no ip address switchport switchport access vlan 302 ! interface FastEthernet8/26 description To DHCP/RADIUS Servers no ip address switchport switchport access vlan 95 ! interface FastEthernet8/31 description To BackBone no ip address switchport switchport access vlan 71 ! interface FastEthernet9/32 description To CORPA no ip address switchport switchport access vlan 165 no cdp enable ! !interface Vlan1 no ip address shutdown ! interface Vlan71 description VLAN to tftpserver ip address 1.7.46.65 255.255.0.0 ! interface Vlan95 description VLAN for RADIUS and DHCP ip address 10.2.25.1 255.255.255.0 ! interface Vlan100 description Internal VLAN SUP-to-MWAM Gi ip address 10.1.2.1 255.255.255.0 ! interface Vlan101 description VLAN to GGSN for GA/GN ip address 10.1.1.1 255.255.255.0 ! interface Vlan165 description VLAN to CORPA ip address 165.1.1.1 255.255.0.0 ! interface Vlan302 ip address 40.0.2.1 255.255.255.0 ! interface Vlan303 ip address 40.0.3.1 255.255.255.0 ! router ospf 300 log-adjacency-changes summary-address 9.9.9.0 255.255.255.0 redistribute static subnets route-map GGSN-routes network 40.0.2.0 0.0.0.255 area 300 network 40.0.3.0 0.0.0.255 area 300 ! ip classless ip route 9.9.9.72 255.255.255.255 10.1.1.72 ip route 9.9.9.73 255.255.255.255 10.1.1.73 ip route 9.9.9.74 255.255.255.255 10.1.1.74 ip route 9.9.9.75 255.255.255.255 10.1.1.75 ip route 9.9.9.76 255.255.255.255 10.1.1.76 ip route 110.72.0.0 255.255.0.0 10.1.1.72 ip route 110.73.0.0 255.255.0.0 10.1.1.73 ip route 110.74.0.0 255.255.0.0 10.1.1.74 ip route 110.75.0.0 255.255.0.0 10.1.1.75 ip route 110.76.0.0 255.255.0.0 10.1.1.76 ! access-list 1 permit 9.9.9.0 0.0.0.255 ! route-map GGSN-routes permit 10 match ip address 1 ! GGSN Instance on the Cisco MWAM service gprs ggsn ! hostname 6500-7-2 ! ip cef ! interface Loopback0 description USED FOR DHCP gateway ip address 110.72.0.2 255.255.255.255 ! interface Loopback100 description GPRS GTP V-TEMPLATE IP ADDRESS ip address 9.9.9.72 255.255.255.0 ! interface GigabitEthernet0/0 no ip address ! interface GigabitEthernet0/0.1 description Gi encapsulation dot1Q 100 ip address 10.1.2.72 255.255.255.0 ! interface GigabitEthernet0/0.2 description Ga/Gn Interface encapsulation dot1Q 101 ip address 10.1.1.72 255.255.255.0 no cdp enable ! interface GigabitEthernet0/0.71 description TFTP or Backbone encapsulation dot1Q 71 ip address 1.7.46.72 255.255.0.0 ! interface GigabitEthernet0/0.95 description CNR and CAR encapsulation dot1Q 95 ip address 10.2.25.72 255.255.255.0 ! interface Virtual-Template1 description GTP v-access ip unnumbered Loopback100 encapsulation gtp gprs access-point-list gprs ! ip classless ip route 0.0.0.0 0.0.0.0 10.1.2.1 ip route 40.1.2.1 255.255.255.255 10.1.1.1 ip route 40.1.3.10 255.255.255.255 10.1.1.1 ip route 40.2.2.1 255.255.255.255 10.1.1.1 ip route 40.2.3.10 255.255.255.255 10.1.1.1 ip route 40.3.2.3 255.255.255.255 10.1.1.1 ip route 40.4.2.3 255.255.255.255 10.1.1.1 ! gprs access-point-list gprs access-point 1 access-point-name CORPA.com ip-address-pool dhcp-proxy-client aggregate auto dhcp-server 10.2.25.90 dhcp-gateway-address 110.72.0.2 ! Restrictions The number of PDP contexts supported on a GGSN is dependent on the memory and platform in use and the GGSN configuration (for example, whether or not a method of Point to Point Protocol [PPP] has been configured to forward packets beyond the terminal equipment and mobile termination, whether Dynamic Feedback Protocol [DFP] is being used or the memory protection feature is enabled, and the rate of PDP context creation to be supported). Note DFP weighs PPP PDPs against IP PDPs with one PPP PDP being equals to 8 IP PDPs. Cisco 7200 Series Router The following list shows the maximum number of PDP contexts supported on the GGSN according to the memory and Cisco 7206 router series in use when a method of PPP has not been configured: •Cisco 7206 VXR NPE-300 with 256 Mb RAM—80,000 IP PDP contexts. •Cisco 7206 VXR NPE-400 router with 512 Mb RAM—135,000 IP PDP contexts. Catalyst 6500 Series Switch / Cisco 7600 Series Router The Cisco MWAM can support up to 60,000 IP PDP contexts per GGSN instance with a maximum number of 300,000 IP PDP contexts per MWAM on which five GGSNs are configured. Supported Standards, MIBs, and RFCs Standards Cisco IOS GGSN software release 4.0 supports the following 3GPP standards: •Release 97/98 –3G TS 03.03 –3G TS 03.60 –3G TS 04.08 –3G TS 09.02 –3G TS 09.60 –3G TS 09.61 –3G TS 12.15 •Release 99 –3G TS 22.107 –3G TS 23.003 –3G TS 23.060 –3G TS 24.008 –3G TS 29.002 –3G TS 29.060 –3G TS 29.061 –3G TS 32.015 The GGSN interfaces comply with the following SMG (Special Mobile Group) standards: •Ga interface—SMG#28 R99 •Gn interface—SMG#31 R98 MIBs •CISCO-GGSN-MIB •CISCO-GGSN-QOS-MIB •CISCO-GPRS-ACC-PT-MIB •CISCO-GPRS-CHARGING-MIB •CISCO-GPRS-GTP-CAPABILITY •CISCO-GPRS-GTP-MIB •CISCO-GTP-CAPABILITY •CISCO-GTP-MIB •CISCO-GTP-DIRECTOR_MIB Note The CISCO-GPRS-GTP-CAPABILITY MIB describes the scope of objects supported in the CISCO-GPRS-GTP-MIB. The CISCO-GTP-CAPABILITY MIB describes the scope of objects supported in the CISCO-GTP-MIB. To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL: http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml RFCs •RFC 1518, An Architecture for IP Address Allocation with CIDR •RFC 1519, Classless Inter-Domain Routing (CIDR): an Address Assignment and Aggregation Strategy •RFC 1661, The Point-to-Point Protocol (PPP) •RFC 2475, An Architecture for Differentiated Services Related Documents Cisco IOS Software Documentation •Cisco IOS Dial Technologies Configuration Guide, Release 12.2 •Cisco IOS Dial Technologies Command Reference, Release 12.2 •Cisco IOS Interface Configuration Guide, Release 12.2 •Cisco IOS Interface Command Reference, Release 12.2 •Cisco IOS IP Configuration Guide, Release 12.2 •Cisco IOS IP Command Reference, Volume 1 of 3: Addressing and Services, Release 12.2 •Cisco IOS IP Command Reference, Volume 2 of 3: Routing Protocols, Release 12.2 •Cisco IOS IP Command Reference, Volume 3 of 3: Multicast, Release 12.2 •Cisco IOS Quality of Service Solutions Configuration Guide, Release 12.2 •Cisco IOS Quality of Service Solutions Command Reference, Release 12.2 •Cisco IOS Security Configuration Guide, Release 12.2 •Cisco IOS Security Command Reference, Release 12.2 •Cisco IOS Switching Services Configuration Guide, Release 12.2 •Cisco IOS Switching Services Command Reference, Release 12.2 •Cisco Multi-processor WAN Application Module Installation and Configuration Note
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