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Cisco IOS Software Releases 12.2 Special and Early Deployments

Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)BY1

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Table Of Contents

Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)BY1

Contents

Introduction

System Requirements

Memory Requirements

Hardware Supported

Software Compatibility

Determining the Software Version

Upgrading to a New Software Release

MIBs

Cisco IOS Feature Sets

Packet Data Serving Node Software Features in Release 12.2(8)BY1

Caveats

Open Caveats

Resolved Caveats

Related Documentation

Release-Specific Documents

Platform-Specific Documents

Feature Modules

Cisco IOS Software Documentation Set

Documentation Modules

Release 12.2 Documentation Set

Obtaining Documentation and Submitting a Service Request


Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)BY1


October 2002

Cisco IOS Release 12.2(8)BY1 is a special release that is based on Cisco IOS Release12.2, with the addition of enhancements to the Cisco Packet Data Serving Node (Cisco PDSN) feature. The Cisco IOS Release 12.2(8)BY1 is a release optimized for the Cisco PDSN Release 1.2 feature on the Cisco 7206VXR router platform.

Contents

These release notes include important information and caveats for the Cisco PDSN software feature provided in Cisco IOS 12.2(8)BY1 for the Cisco 7206 series router platform.

Caveats for Cisco IOS Releases 12.2 can be found on CCO at:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cavs/122mcavs.htm

Release notes for Cisco 7000 Family for Release 12.2T can be found on CCO at:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/7000/rn7000t.htm

This release note includes the following topics:

System Requirements

Packet Data Serving Node Software Features in Release 12.2(8)BY1

Caveats

Related Documentation

Obtaining Documentation and Submitting a Service Request

Introduction

Cisco PDSN is an IOS software feature that enables a Cisco 7206 router to function as a gateway between the wireless Radio Access Network (RAN) and the Internet. With Cisco PDSN enabled on a router, a stationary or roaming mobile user can access the Internet, a corporate network intranet, or Wireless Application Protocol (WAP) services. Cisco PDSN supports both Simple IP operation and Mobile IP operation.

System Requirements

This section describes the system requirements for Cisco IOS Release 12.2(8)BY1:

Memory Requirements

Hardware Supported

Software Compatibility

Determining the Software Version

Upgrading to a New Software Release

MIBs

Memory Requirements

Table 1 shows the memory requirements for the PDSN Software Feature Set that supports the Cisco 7206 router. The table also lists the memory requirements for the IP Standard Feature Set (for the Home Agent [HA]).

Table 1 Memory Requirements for the Cisco 7206 Router

Platform
Software
Feature Set
Image Name
Flash
Memory
Required
DRAM
Memory
Required
Runs
From
Cisco 7206 Router

PDSN Software Feature Set

c7200-c5is-mz.122-8-BY1 c7200-c5ik9s-mz.122-8-BY1 c7200-c6is-mz.122-8-BY1 c7200-c6ik9s-mz.122-8-BY1

20 MB

512 MB

RAM


Hardware Supported

Cisco IOS Release 12.2(8)BY1 is optimized for PDSN Release 1.2 on the Cisco 7206VXR router platform.

The recommended hardware configuration for a R1.2 PDSN is a 7206VXR with NPE400-512MB and PA-FE-TX1 port adapters. This is the only configuration tested in the Cisco lab. Cisco does not support or test any other variations of this configuration. If you require a different configuration you should consult with your Cisco representative before you order.

Software Compatibility

Cisco IOS Release 12.2(8)BY1 is a special release that is developed on Cisco IOS Release 12.2.

Cisco IOS Release 12.2(8)BY1 supports the same features that are in Cisco IOS Release 12.2, with the addition of the PDSN Release 1.2 feature.

Determining the Software Version

To determine the version of Cisco IOS software running on your router, log in to the router and enter the show version EXEC command:

Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-C5IS), Version 12.2(8)BY, RELEASE SOFTWARE

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

MIBs

Old Cisco Management Information Bases (MIBs) will be replaced in a future release. Currently, OLD-CISCO-* MIBs are being converted into more scalable MIBs—without affecting existing Cisco IOS products or NMS applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 2.

Table 2 Deprecated and Replacement MIBs 

Deprecated MIB
Replacement

OLD-CISCO-APPLETALK-MIB

RFC1243-MIB

OLD-CISCO-CHASSIS-MIB

ENTITY-MIB

OLD-CISCO-CPUK-MIB

To be decided

OLD-CISCO-DECNET-MIB

To be decided

OLD-CISCO-ENV-MIB

CISCO-ENVMON-MIB

OLD-CISCO-FLASH-MIB

CISCO-FLASH-MIB

OLD-CISCO-INTERFACES-MIB

IF-MIB CISCO-QUEUE-MIB

OLD-CISCO-IP-MIB

To be decided

OLD-CISCO-MEMORY-MIB

CISCO-MEMORY-POOL-MIB

OLD-CISCO-NOVELL-MIB

NOVELL-IPX-MIB

OLD-CISCO-SYS-MIB

(Compilation of other OLD* MIBs)

OLD-CISCO-SYSTEM-MIB

CISCO-CONFIG-COPY-MIB

OLD-CISCO-TCP-MIB

CISCO-TCP-MIB

OLD-CISCO-TS-MIB

To be decided

OLD-CISCO-VINES-MIB

CISCO-VINES-MIB

OLD-CISCO-XNS-MIB

To be decided


Cisco IOS Feature Sets

The Cisco IOS software is packaged in feature sets consisting of software images—depending on the platform. Each feature set contains a specific set of Cisco IOS features.

Cisco IOS Release 12.2(8)BY1 supports the same feature sets as Cisco Release 12.2, with the exception that Cisco Release 12.2(8)BY1 includes the PDSN feature. The PDSN feature is optimized for the Cisco 7206 router.


Caution Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to United States government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay due to United States government regulations. When applicable, purchaser/user must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com.

Packet Data Serving Node Software Features in Release 12.2(8)BY1

The Cisco IOS Release 12.2(8)BY1 supports the same feature sets as Cisco Release 12.2, with the exceptions that Cisco Release 12.2(8)BY1 includes the PDSN feature. The PDSN 1.2 feature is optimized for the Cisco 7206 router, and includes the following features:

PDSN Cluster Controller / Member Architecture

Prepaid Billing

Conditional Debugging

PPP Optimization

Electronic Serial Number (ESN) in Billing

3 DES Encryption

1xEV-DO Support

Mobile IP IPSec

All other software features in Cisco IOS Release 12.2 are described in the documentation for Cisco  IOS Release 12.2, which can be found at:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/index.htm

Caveats

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious.

Caveats for Cisco IOS Releases 12.2 can be found on CCO at /en/US/docs/ios/12_2/release/notes/122mcavs.html

The "Open Caveats" section lists open caveats that apply to the current release and might also apply to previous releases.

The "Resolved Caveats" section lists caveats resolved in a particular release, which may have been open in previous releases.


Note If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. You can reach Bug Navigator II on CCO at Software Center: Cisco IOS Software: Cisco Bug Toolkit: Cisco Bugtool Navigator II, or at http://www.cisco.com/support/bugtools.


Open Caveats

This section describes possible unexpected behavior in Cisco IOS Release 12.2(8)BY1.

CSCdv75504

When a Mobile IP session is opened, and packets are sent through the tunnel, the show interface tunnel X accounting command (on the Mobile IP tunnel) does not show any protocol based accounting information.

There is no workaround.

CSCdv75045

Occasional packet drops occur when a downstream sweep ping is executed, and when there are more than 8000 Mobile IP sessions hosted on the PDSN.

There is no workaround.

CSCdx03945

Adding hex strings that are exactly 31 bytes in length to the following directive will incorrectly set the key value:

ip mobile secure host 10.0.0.1 spi 100 key hex 1234567890123456789012345678901

A workaround is to make sure the value is exactly 32 bytes in length.

CSCdx55143

On the Cisco PDSN, a quota request is sent for a non-prepaid user if it is opened on a prepaid session. A quota request should not be sent for a non-prepaid user if the user registers over an already existing session that has an active prepaid flow.

A workaround is to register the non-prepaid user over a new session.

CSCdx60192

If IP fragmentation is enabled on the PCF, and AHDLC fragment size is greater than this value, then packets from the MN with an AHDLC fragment size that is less than the MTU configured on the PCF will be processed in the fastpath in the PDSN. This will cause AHDLC FCS errors.

A workaround is to remove any IP fragmentation on the PCF unless it is absolutely necessary.

CSCdx74938

After opening 10,000 Simple IP sessions, and PPP renegotiation is initiated, those sessions will go down.

There is no workaround.

CSCdx80222

On the Cisco PDSN, a MobileIP flow will not come up if IPCP renegotiation is initiated by a MN after the session is up.

There is no workaround.

CSCdy14130

PDSN reloads when you simultaneously close compression sessions and issue the show compress detail-ccp command.

As a workaround, do not issue show compress detail-ccp command while closing compression sessions.

CSCdy19930

On the Cisco PDSN, malloc failures are observed (with periodic accounting update 1), while mobiles connect and disconnect simultaneously.

A workaround is to disable periodic accounting update 1, or enter much higher values of periodic accounting intervals.

CSCdy75288

PPP data packets received at the PDSN from the mobile get switched to the Pi interface, even if the flow for the corresponding mobile is not yet created. This causes them to remain unaccounted for.

This problem happens only when the RP session has been established between the PCF and the PDSN, and an ahdlc channel has been allocated to the mobile. Thus, it occurs only for a short period of time before the flow gets created, or the flow fails to get established.

There is no workaround.

CSCdy85867

When 20000 sessions are open and PPP is renegotiated over them at a high rate—and you then close down of the sessions—a few sessions on the PDSN do not get closed successfully. Apparently, IPCP is continuously trying to send out Config Request packets, and these packets never go out of the box.

There is no workaround.

CSCdy88090

On the PDSN, the clear cdma pdsn statistics command may not clear the AHDLC related statistics.

There is no workaround.

CSCdz00743

On the PDSN, the following MIB objects may return NULL values, even though the corresponding service type flow actually fails to come up when underlying PPP session is UP.

cCdmaFlowSimpleIpFailures

cCdmaFlowMobilIpFailures

cCdmaFlowProxyIpFailures

cCdmaFlowVpdnFailures

There is no workaround.

CSCdz03252

On the PDSN, the following MIB objects may not increment even though I/O memory is locked up, and malloc failures appear.

cCdmaAhdlcMemDropPktsDec

cCdmaAhdlcMemDropPktsEnc

There is no workaround.

CSCdz12036

Running a Cisco PDSN at stress conditions causes sessions flapping; additionally, the PPP renegotiation success and failure counters do not tally with the total renegotiation counter.

There is no work around; however, this condition only occurs during stress conditions.

CSCin10386

While opening 8000 sessions with one Mobile IP flow each, the MobileIp flows count occasionally becomes greater than the session count.

There is no workaround.

CSCin19975

On the PDSN, PPP renegotiation may not be intiated by the PDSN during the second PDSN-to-PDSN handoff when the mobile moves between the same PDSNs.

There is no workaround.

CSCin22446

After disabling the ip route-cache (no ip route-cache), and enabling it again

with the ip route-cache cef command on the PDSN vitrual-template, the CEF is not enabled on the vaccess.

There is no workaround.

Resolved Caveats

The following DDTS were resolved in the 12.2(8)BY1 release.

CSCdw60630

When a dormant handoff takes place on the PDSN, the PDSN does not send Release Indicator (F13 Accounting Attribute) to the radius server. This problem only occurs when the cdma pdsn accounting send start-stop command is configured on the PDSN.

As a workaround, for dormant handoffs, do not configure the cdma pdsn accounting send start-stop command.

CSCdx90388

Opening Mobile IP sessions at a high rate (>50cps) can cause a session to become stuck in opening state.

The workaround is to use a lower call setup rate when opening Mobile IP sessions (~20cps).

CSCdy08833

After opening of Mobile IP sessions, BADSHARE Tracebacks were observed while reloading the PDSN.

There is no workaround.

CSCdy11322

When precloning is configured, and the PDSN generates a proxy MIP request, that request fails if compression attributes are returned from AAA.

A workaround is to disable the configuration for precloning.

CSCdy24978

On the Cisco PDSN, at high call setup rates (greater than 150 cps), the cluster may drop new calls. Adding more members to the cluster does not improve the call setup rates linearly.

There is no workaround

CSCdy35759

When opening and closing PDSN sessions, the PPP CHAP attempts and success counters may not match in the output of the show cdma pdsn statistics command.

There is no workaround.

CSCdy37069

On a router equipped with a hardware compression component, the PDSN reloads when "compress stac" is configured (instead of "compress stac software") on a PDSN virtual template interface, and there is no user session utilizing that virtual template.

As a workaround, do not configure PPP hardware payload compression on a virtual template interface when the virtual template is to be used for PDSN CDMA. If compression is needed on a virtual interface, use any of the following.

a. specify software compression in the configuration command, or

b. establish a user session before configuring compression, or

c. remove the compression hardware from the router.

CSCdy40189

The Cluster Controller sends two cCdmaClusterMemberStatusChange traps when the PDSN member status changes.

There is no workaround because the problem could not be reproduced.

CSCdy43978

Malloc failures are observed while sending UP stream fragmented traffic through 20,000 Mobile IP Sessions. These failures are due to high packet rate; memory is recovered once the traffic is stopped.

A workaround is to set the maximum sessions on the PDSN to 8000.

CSCdz00198

A Cisco 7200 router that is running 12.2.1a.XC version of the PDSN solution, frequently reloads. This bug is a duplicate of CSCdw50718.

There is no workaround.

CSCdz05272

While displaying show aaa sessions, the PDSN crashed and auto-reloaded.

This bug is a duplicate of CSCdu58983.

There is no workaround.

CSCin15071

The SNMP query on the cCdmaAffectedAddress object on the PDSN cluster member returns a null string.

There is no workaround because the problem could not be reproduced.

CSCin15149

During mobile poweroff, before IPCP is up, the proxy registation entry is not getting deleted. At this point the user cannot perform proxy registration again.

A workaround is to delete the proxy registration, allowing the proxy flow to be opened.

CSCin16292

In a Cisco PDSN, the following MIB variables will return incorrect values:

cmiSecAlgorithmType and cmiSecAlgorithmMode will not support HMAC configurations, and will only return a value of "Other" (1).

faVisitorRegIDHigh variable may show negative values.

maAdvConfigTable will not return all the Vaccess details.

The following two variables are not supported, and will always return a "FALSE" value.

faIsBusy

faRegistrationRequired

There is no workaround.

CSCin18138

Some of the PPP Setup, RP Registration, Session failure and Clustering-related MIB counters may not return correct values on snmp query.

There is no workaround.

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

Platform-Specific Documents

Feature Modules

Cisco IOS Software Documentation Set

Release-Specific Documents

The following documents are specific to Cisco IOS Release 12.2(8)BY1:

Packet Data Serving Node (PDSN) Release 1.2 at the following url:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122y/ 122by8/index.htm

The following documents are specific to Release 12.2 and are located on CCO and the Documentation CD-ROM:

Cross-Platform Release Notes for Cisco IOS Release 12.2

On CCO at:

Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Release Notes: Cross-Platform Release Notes

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes

Caveats for Cisco IOS Release 12.1 T

See Caveats for Cisco IOS Release 12.2 and Caveats for Cisco IOS Release 12.2T, which contain caveats applicable to all platforms for all maintenance releases of Release 12.2 and Release 12.2 T.

On CCO at:

Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Caveats

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Caveats


Note If you have an account with CCO, you can use Bug Navigator II to find caveats of any severity for any release. You can reach Bug Navigator II on CCO at Software Center: Cisco IOS Software: Cisco Bug Toolkit: Cisco Bugtool Navigator II, or at http://www.cisco.com/support/bugtools.


Product bulletins, field notices, and other release-specific documents on CCO at:

Technical Documents

Platform-Specific Documents

Documentation specific to the Cisco 7206 Router is located at the following locations:

On CCO at: Cisco Product Documentation: Core/High-End Routers: Cisco 7206

On the Documentation CD-ROM at: Cisco Product Documentation: Core/High-End Routers: Cisco 7206

Feature Modules

Feature modules describe new features supported by Release 12.2 and are updates to the Cisco IOS documentation set. A feature module consists of a brief overview of the feature, benefits, configuration tasks, and a command reference. As updates, the feature modules are available online only. Feature module information is incorporated in the next printing of the Cisco IOS documentation set.

On CCO at:

Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.2: New Feature Documentation

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: New Feature Documentation

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 12.2: Configuration Guides and Command References

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Configuration Guides and Command References

Release 12.2 Documentation Set

Table 3 describes the contents of the Cisco IOS Release 12.2 software documentation set, which is available in electronic form and in printed form when ordered.


Note 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 12.2

On the Documentation CD-ROM at:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2

Table 3 Cisco IOS Software Release 12.2 Documentation Set 

Books
Major Topics

Cisco IOS Configuration Fundamentals Configuration Guide

Cisco IOS Configuration Fundamentals Command Reference

Cisco IOS User Interfaces
Cisco IOS File Management
Cisco IOS System Management

Cisco IOS Bridging and IBM Networking Configuration Guide

Cisco IOS Bridging and IBM Networking Command Reference, Volume I

Cisco IOS Bridging and IBM Networking Command Reference, Volume II

Using Cisco IOS Software
Overview of SNA Internetworking
Bridging
IBM Networking

Cisco IOS Dial Services Configuration Guide: Terminal Services

Cisco IOS Dial Services Configuration Guide: Network Services

Cisco IOS Dial Services Command Reference

Preparing for Dial Access
Modem Configuration and Management
ISDN and Signalling Configuration
PPP Configuration
Dial-on-Demand Routing Configuration
Dial-Backup Configuration
Terminal Service Configuration
Large-Scale Dial Solutions
Cost-Control Solutions
Virtual Private Networks
X.25 on ISDN Solutions
Telco Solutions
Dial-Related Addressing Services
Interworking Dial Access Scenarios

Cisco IOS Interface Configuration Guide

Cisco IOS Interface Command Reference

Interface Configuration Overview
Configuring LAN Interfaces
Configuring Serial Interfaces
Configuring Logical Interfaces

Cisco IOS IP and IP Routing Configuration Guide

Cisco IOS IP and IP Routing Command Reference

IP Addressing and Services
IP Routing Protocols
IP Multicast

Cisco IOS AppleTalk and Novell IPX Configuration Guide

Cisco IOS AppleTalk and Novell IPX Command Reference

AppleTalk and Novell IPX Overview
Configuring AppleTalk
Configuring Novell IPX

Cisco IOS Apollo Domain, Banyan VINES, DECnet, ISO CLNS, and XNS Configuration Guide

Cisco IOS Apollo Domain, Banyan VINES, DECnet, ISO CLNS, and XNS Command Reference

Apollo Domain, Banyan VINES, DECnet, ISO CLNS, and XNS Overview
Configuring Apollo Domain
Configuring Banyan VINES
Configuring DECnet
Configuring ISO CLNS
Configuring XNS

Cisco IOS Multiservice Applications Configuration Guide

Cisco IOS Multiservice Applications Command Reference

Multiservice Applications Overview
Voice
Video
Broadband

Cisco IOS Quality of Service Solutions Configuration Guide

Cisco IOS Quality of Service Solutions Command Reference

Quality of Service Overview
Classification
Congestion Management
Congestion Avoidance
Policing and Shaping
Signalling
Link Efficiency Mechanisms
Quality of Service Solutions

Cisco IOS Security Configuration Guide

Cisco IOS Security Command Reference

Security Overview
Authentication, Authorization, and Accounting (AAA)
Security Server Protocols
Traffic Filtering and Firewalls
IP Security and Encryption
Other Security Features

Cisco IOS Switching Services Configuration Guide

Cisco IOS Switching Services Command Reference

Cisco IOS Switching Services Overview
Cisco IOS Switching Paths
Cisco Express Forwarding
NetFlow Switching
MPLS Switching
Multilayer Switching
Multicast Distributed Switching
Virtual LANs
LAN Emulation

Cisco IOS Wide-Area Networking Configuration Guide

Cisco IOS Wide-Area Networking Command Reference

Wide-Area Networking Overview
Configuring ATM
Configuring Frame Relay
Configuring Frame Relay-ATM Interworking
Configuring SMDS
Configuring X.25 and LAPB

New Features in 12.1-Based Limited Lifetime Releases

New Features in Release 12.1 T

Release Notes (Release note and caveat documentation for 12.1-based releases and various platforms)

Cisco IOS Debug Command Reference

Cisco IOS Dial Services Quick Configuration Guide

 



Note Cisco Management Information Base (MIB) User Quick Reference is no longer published. If you have an account with CCO, you can find the current list of MIBs supported by Cisco. To reach the Cisco Network Management Toolkit, go to CCO, press Login: Technical Support: Software Center: Network Mgmt Software: Cisco Network Management Toolkit: Cisco MIBs.


Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.


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