Table Of Contents
Introduction to Cisco GGSN on the Cisco MWAM
Hardware and Software Requirements
Determining the Software Version
Upgrading to a New Software Release
Limitations, Restrictions, and Important Notes
New Implementations and Behavior Changes in Cisco IOS Release 12.3(11)YJ
Caveats with Cisco IOS Release 12.3(11)YJ
Cisco MWAM Caveats with Cisco IOS Release 12.3(11)YJ
Cisco IOS Software Documentation Set
Release 12.3 Documentation Set
Documentation Roadmap for Implementing GGSN Release 5.1 on the Cisco MWAM
Obtaining Technical Assistance
Cisco Technical Support Website
Definitions of Service Request Severity
Obtaining Additional Publications and Information
Release Notes for GGSN 5.1 on the
Catalyst 6000 / Cisco 7600 MWAM for
Cisco IOS Software Release 12.3(11)YJ
January 20, 2005
Cisco IOS Release 12.3(11)YJ
OL-5266-08
These release notes for the Cisco GGSN Release 5.1 on the Cisco Multi-processor WAN Application Module (MWAM) describe the enhancements provided in Cisco IOS Release 12.3(11)YJ. These release notes are updated as needed.
For a list of the software caveats that apply to Cisco IOS Release 12.3(11)YJ, see the "Caveats with Cisco IOS Release 12.3(11)YJ" section and Caveats for Cisco IOS Release 12.3 T. The caveats document is updated for every maintenance release and is located on Cisco.com and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.3 located on Cisco.com and the Documentation CD-ROM.
Documentation Survey
Is Cisco documentation helpful? Click here to give us your feedback or go to the following URL to give us your feedback:
http://www.cisco.com/warp/public/732/docsurvey/rtg/ to give us your feedback .Contents
These release notes describe the following topics:
•
Introduction to Cisco GGSN on the Cisco MWAM
•
•
•
•
•
•
Introduction to Cisco GGSN on the Cisco MWAM
The following sections describe Cisco GGSN and the Catalyst 6500 / Cisco 7600 Multi-processor WAN Application Module (MWAM).
Cisco GGSN Overview
Gateway GPRS support node (GGSN) is a service designed for Global System for Mobile Communications (GSM) networks. GSM is a digital cellular technology that is used worldwide, predominantly in Europe and Asia. GSM is the world's leading standard in digital wireless communications.
GPRS is standardized by the European Telecommunications Standards Institute (ETSI). The most common application of GPRS is expected to be Internet/intranet access. Cisco Systems' GPRS solution enables mobile wireless service providers to supply their mobile subscribers with packet-based data services in GSM networks.
GPRS introduces the following two new major network elements:
•
•
Combined 2.5G and 3G packet gateway support and interworking capability on the same node was introduced in Cisco GGSN Release 4.0.
Cisco MWAM Overview
With Cisco IOS Software Release 12.3(2)XB and later, Cisco GGSN software can run on the Cisco MWAM installed in a Catalyst 6500 series switch or Cisco 7600 series router.
The MWAM provides three processor complexes with dual processors used in two of the complexes and a single processor used in the remaining processor complex. This architecture provides five mobile wireless applications on one module.
The MWAM does not provide external ports but is connected to the switch fabric in the Catalyst 6500/Cisco 7600 chassis. An internal Gigabit Ethernet port provides an interface between each processor complex and the Supervisor module. Virtual Local Area Networks (VLANs) direct traffic from external ports via the Supervisor module to each mobile wireless application instance.
The MWAM provides an interface to the IOS image on the Supervisor module. The Supervisor module software enables a single session to be established to each application on the MWAM(s) in the chassis. Each session is used for configuring, monitoring, and troubleshooting application. For information on establishing sessions to mobile wireless application instances on the MWAM, refer to the Cisco Multi-Processor WAN Application Module Installation and Configuration Notes:
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/cfgnotes/mwam_icn.htm
Note
The software image that provides the mobile wireless application feature is downloaded through the Supervisor module and distributed to each processor complex on the MWAM(s). The same image is installed on all the processors in the MWAM.
System Requirements
This section describes the system requirements for Cisco IOS Release 12.3(11)YJ and includes the following sections:
•
•
•
Memory Recommendations
Hardware and Software Requirements
Proper implementation of the Cisco GGSN features in the Cisco IOS Release 12.3(11)YJ software requires the following hardware and software:
•
•
Note
For information about Cisco IOS Release 12.2(18)SXD2, refer to the documentation on Cisco IOS Release 12.2 SX New Features available at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122sx/index.htm
Note
http://www.cisco.com/cgi-bin/front.x/Support/HWSWmatrix/hwswmatrix.cgi
Determining the Software Version
To determine the version of Cisco IOS software running on your Cisco MWAM, log in to the router on one of the MWAM processors and enter the show version EXEC command:
Router# show versionCisco Internetwork Operating System SoftwareIOS (tm) MWAM Software (MWAM-G4JS-M), Version 12.3(11)YJ, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)TAC Support: http://www.cisco.com/tacCopyright (c) 1986-2002 by cisco Systems, Inc.Upgrading to a New Software Release
For information on upgrading to a new software release, see the product bulletin Cisco IOS Software Upgrade Ordering Instructions located at:
http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm
Upgrading IOS Image on MWAM
For information on upgrading IOS images on the MWAM, refer to the Cisco Multi-Processor WAN Application Module Installation and Configuration Notes:
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/cfgnotes/mwam_icn.htm
Note
Upgrading ROMMON Software
To perform an ROMMON software upgrade, use the procedure provided in the Cisco Multi-Processor WAN Application Module Installation and Configuration Notes.
MIBs
Current MIBs
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 http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
Limitations, Restrictions, and Important Notes
When using Cisco IOS Release 12.3(11)YJ, observe the following:
•
•
•
•
•
•
•
–
–
–
!interface Virtual-Template1description GGSN-VTip unnumbered Loopback0encapsulation gtpno logging event link-statusgprs access-point-list gprsendFor implementation of the GGSN Release 5.1 GTP Session Redundancy (GTP-SR) feature, the following additional important notes, limitations, and restrictions apply:
•
•
•
•
•
•
New and Changed Information
The following section lists the new implementations and behavior changes in the Cisco IOS Release 12.3 YJ releases:
•
New Implementations and Behavior Changes in Cisco IOS Release 12.3(11)YJ
Cisco GGSN Release 5.1, Cisco IOS Release 12.3(11)YJ and later support Active/Standby, 1-to-1 inter-device GTP session redundancy (GTP-SR). GTP-SR enables two GGSNs located on separate Cisco Multi-Processor WAN Application Modules (MWAMs) installed in separate Cisco 7600 series chassis to appear as one network entity and ensures that continuous service is provided to mobile subscribers in the event one of the GGSNs fails.
The Cisco GGSN software uses the Cisco IOS Hot Standby Routing Protocol (HSRP), the Cisco IOS Check-point Facility (CF) and Redundancy Framework (CF), and Stream Control Transmission Protocol (SCTP) to provide inter-device redundancy and high availability.
In a GTP-SR implementation, the Active GGSN establishes and terminates PDP sessions and sends required stateful data to the Standby GGSN. To stay current on the states of active PDP sessions, the Standby GGSN receives the stateful data sent by the Active GGSN. As soon as the Standby GGSN detects that the Active GGSN has failed, it becomes active and assumes the responsibilities of the Active GGSN.
For information on each of this feature see the Cisco IOS Release 12.3(11)YJ Cisco GGSN Release 5.1 configuration guide and command reference:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123limit/123y/123yj/index.htm
Caveats with Cisco IOS Release 12.3(11)YJ
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only select severity 3 caveats are included in the caveats document.
This section contains only open and resolved caveats for the current Cisco IOS maintenance release.
All caveats in Cisco IOS Release 12.3 and Cisco IOS Release 12.3 T are also in Cisco IOS Release 12.3(11)YJ.
For information on caveats in Cisco IOS Release 12.3, see Caveats for Cisco IOS Release 12.3.
For information on caveats in Cisco IOS Release 12.3 T, see Caveats for Cisco IOS Release 12.3T, which lists severity 1 and 2 caveats and select severity 3 caveats and is located on Cisco.com and the Documentation CD-ROM.
Using the Bug Navigator II
If you have an account with Cisco.com, you can use Bug Navigator II to find caveats the most current list of caveats of any severity for any software release. To reach Bug Navigator II, Login to Cisco.com and click Software Center: Cisco IOS Software: Cisco Bugtool Navigator II. Another option is to go directly to http://www.cisco.com/support/bugtools.
Open Caveats
This section documents possible unexpected behavior by Cisco IOS Release 12.3(11)YJ and describes only severity 1 and 2 caveats and select severity 3 caveats.
•
Description: On a Cisco router running Cisco GGSN software with GTP-SR configured, the Active GGSN drops PDP contexts due to low memory warning even though the free memory is significantly above the memory threshold.
This condition occurs when the memory threshold and GTP-SR are configured on the GGSN.
Workaround: There is currently no known workaround.
•
Description: When 500 APN and 500 HRSP groups are configured with sub-interfaces to support 500 VRFs, and Network Address Translation (NAT) is also configured, when 60,000 PDP contexts are opened at 10 calls per second (cps), CPU usage is at 99% all the time.
Workaround: There is currently no known workaround.
•
Description: When a large number of GTPv1 IP PDP contexts (RADIUS, local pool) are open and closed with continuous downstream traffic, when the traffic is stopped and the PDP contexts are deleted on the active GGSN, the available bandwidth displayed on the Active GGSN is incorrect.
Workaround: There is currently no known workaround.
•
Description: After an SSO failover occurs, the execute-on slot cpu_number command fails to execute on Processor 6.
Workaround: There is currently no known workaround.
•
Description: When a Cisco GGSN with a large amount of NAT entries, CPU utilization will be very high even with light traffic. This condition occurs as a result of a large NAT configuration on a standalone.
Workaround: There is currently no known workaround.
•
Description: When running a very high rate of signaling on a Cisco GGSN with the charging gateway is disabled for a number of hours, when the signaling traffic is stopped and the charging gateway is active once again, there are CDR containers open but with all PDP contexts are closed.
Workaround: There is currently no known workaround but the Cisco IOS SLB feature will help to reduce the rate for each GGSN.
•
Description: A Cisco router running Cisco GGSN software does not send tunnel end-point identifier (TEID) control in the update response if TEID-C is previously confirmed by the SGSN. While this is not a problem, to help inter-operate with SGSNs communicating with one another in GTPv0, but capable of communicating with a GGSN in GTPv1, the new SGSN needs to know the TEID-C of the PDP context.
Workaround: There is currently no known workaround.
Resolved Caveat
The caveat listed in this section is resolved in Cisco IOS Release 12.3(11)YJ. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
•
Cisco Internetwork Operating System (IOS) software is vulnerable to a Denial of Service (DoS) and potentially an arbitrary code execution attack from a specifically crafted IPv6 packet. The packet must be sent from a local network segment. Only devices that have been explicitly configured to process IPv6 traffic are affected. Upon successful exploitation, the device may reload or be open to further exploitation.
Cisco has made free software available to address this vulnerability for all affected customers.
More details can be found in the security advisory that is posted at http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml.
•
Description: At bootup or after a GGSN switchover, the HRSP virtual IP address on a MWAM processor is not reachable.
Cisco MWAM Caveats with Cisco IOS Release 12.3(11)YJ
This section lists the Cisco MWAM caveats that are open and resolved with Cisco IOS Release 12.3(11)YJ.
Open Caveat
The following Cisco MWAM caveat is open with Cisco IOS Release 12.3(11)YJ:
•
Description: When the exit command is executed from the privileged EXEC mode of an MWAM processor, you are not always returned to the Supervisor privileged EXEC prompt. Returning to the Supervisor privileged EXEC prompt might take additional exits.
For example, the following procedure places you in MWAM console mode instead of returning to the Supervisor prompt:
–
Sup-7600> enableSup-7606# session slot slot_number processor processor_number–
mwam-4-2> enable–
mwam-4-2# show ip interface brief–
Workaround: There is currently no known workaround.
Resolved Caveat
There are no newly resolved Cisco MWAM caveats for Cisco IOS Release 12.3(11)YJ.
Documentation Updates
This section contains information that was not included or was documented incorrectly in the Cisco GGSN Release 5.1 Configuration Guide or the GGSN Release 5.1 Command Reference.
Creating a Virtual Template Interface
To create a virtual template interface, use the following commands, beginning in global configuration mode:
Related Documentation
Except for feature modules, documentation is available as printed manuals or electronic documents. Feature modules are available online on CCO and the Documentation CD-ROM.
Use these release notes with these documents:
•
Release-Specific Documents
The following documents are specific to Release 12.3 and are located on CCO and the Documentation CD-ROM:
•
•
On CCO at:
Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.3: Release Notes: Cross-Platform Release Notes
•
See Caveats for Cisco IOS Release 12.3 and Caveats for Cisco IOS Release 12.3T, which contain caveats applicable to all platforms for all maintenance releases of Release 12.3 and Release 12.3 T.
On CCO at:
Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.3: Caveats
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.3: Caveats
Note
•
Technical Documents
Platform-Specific Documents
These documents are available for the Catalyst 6500/Cisco 7600 series platforms on Cisco.com and the Documentation CD-ROM:
•
•
–
–
–
•
–
–
–
Catalyst 6500 Series Switch Documentation is available at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/index.htm
Cisco 7600 Series Routers Documentation is available at the following URL:
http://www.cisco.com/en/US/products/hw/routers/ps368/products_installation_guides_books_list.html
Cisco IOS Software Documentation Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents that are shipped with your order in electronic form on the Documentation CD-ROM, unless you specifically ordered the printed versions.
Documentation Modules
Each module in the Cisco IOS documentation set consists of two books: a configuration guide and a corresponding command reference. Chapters in a configuration guide describe protocols, configuration tasks, Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.
On CCO and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.
On CCO at:
Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.3: Configuration Guides and Command References
Release 12.3 Documentation Set
You can find the most current Cisco IOS documentation on CCO and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed.
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.3
Note
Documentation Roadmap for Implementing GGSN Release 5.1 on the Cisco MWAM
The following sections list related documentation (by category and then by task) that will be useful when implementing a Cisco GGSN on the Cisco MWAM platform.
General Overview Documents
Core Cisco 7609 Documents:
http://www.cisco.com/en/US/products/hw/routers/ps368/prod_technical_documentation.html
Navigating from Cisco.com: Products & Services / Routers / Cisco 7600 Series Router / Technical Documentation
Cisco 7609 Product Literature (white papers, data sheets, brochures):
http://www.cisco.com/en/US/products/hw/routers/ps368/prod_literature.html
Navigating from Cisco.com: Products & Services / Routers / Cisco 7600 Series Router / Product Literature
Cisco IOS Software Mainline Documentation:
http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/prod_technical_documentation.html
Navigating from Cisco.com: Products & Services / IOS Software / Cisco IOS Software Releases / Cisco IOS 12.3 Mainline / Technical Documentation
Miscellaneous Cisco IOS Software Documentation:
http://www.cisco.com/en/US/products/sw/iosswrel/products_ios_cisco_ios_software_category_home.html
Documentation List by Task
Getting Started
•
http://www.cisco.com/en/US/products/hw/routers/ps368/products_quick_start09186a0080092248.html
•
http://www.cisco.com/en/US/products/hw/routers/ps368/products_regulatory_approvals_and_compliance_list.html
Unpack and install the Cisco 7609 router:
•
http://www.cisco.com/en/US/products/hw/routers/ps368/products_installation_guide_book09186a008007e036.html
Install the Supervisor module and configure the router (basic configuration—VLANs, IP, etc.) using the following documentation:
•
http://www.cisco.com/en/US/products/hw/routers/ps368/products_module_installation_guide_book09186a008007cd9d.html
•
http://www.cisco.com/en/US/products/hw/routers/ps368/prod_configuration_guides_list.html
Install and complete the basic Cisco MWAM configuration:
•
http://www.cisco.com/en/US/products/hw/routers/ps368/products_module_installation_guide_book09186a008007cd9d.html
•
http://www.cisco.com/en/US/products/hw/routers/ps368/prod_module_install_config_guide_list.html
Download the Cisco IOS software image containing the GGSN 5.1 feature and configure the GGSNs on the MWAM:
•
http://www.cisco.com/en/US/products/sw/iosswrel/ps5413/prod_ios_releases_home.html
Obtaining Documentation
Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.
Cisco.com
You can access the most current Cisco documentation at this URL:
http://www.cisco.com/univercd/home/home.htm
You can access the Cisco website at this URL:
You can access international Cisco websites at this URL:
http://www.cisco.com/public/countries_languages.shtml
Ordering Documentation
You can find instructions for ordering documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm
You can order Cisco documentation in these ways:
•
http://www.cisco.com/en/US/partner/ordering/index.shtml
•
Documentation Feedback
You can send comments about technical documentation to bug-doc@cisco.com.
You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.
Cisco Technical Support Website
The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year at this URL:
http://www.cisco.com/techsupport
Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:
http://tools.cisco.com/RPF/register/register.do
Submitting a Service Request
Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool automatically provides recommended solutions. If your issue is not resolved using the recommended resources, your service request will be assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:
http://www.cisco.com/techsupport/servicerequest
For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.
To open a service request by telephone, use one of the following numbers:
Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553 2447For a complete list of Cisco TAC contacts, go to this URL:
http://www.cisco.com/techsupport/contacts
Definitions of Service Request Severity
To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.
Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.
Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.
Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.
Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.
Obtaining Additional Publications and Information
Information about Cisco products, technologies, and network solutions is available from various online and printed sources.
•
http://www.cisco.com/go/marketplace/
•
http://cisco.com/univercd/cc/td/doc/pcat/
•
•
•
http://www.cisco.com/go/iqmagazine
•
•
http://www.cisco.com/en/US/learning/index.html
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
CCSP, the Cisco Square Bridge logo, Follow Me Browsing, and StackWise are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, and iQuick Study are service marks of Cisco Systems, Inc.; and Access Registrar, Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherFast, EtherSwitch, Fast Step, FormShare, GigaDrive, GigaStack, HomeLink, Internet Quotient, IOS, IP/TV, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, LightStream, Linksys, MeetingPlace, MGX, the Networkers logo, Networking Academy, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, ProConnect, RateMUX, ScriptShare, SlideCast, SMARTnet, StrataView Plus, SwitchProbe, TeleRouter, The Fastest Way to Increase Your Internet Quotient, TransPath, and VCO are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
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 relationship between Cisco and any other company. (0411R)
Copyright © 2003-2005, Cisco Systems, Inc.
All rights reserved.
Guest
