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Table Of Contents
Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)BY1
Determining the Software Version
Upgrading to a New Software Release
Packet Data Serving Node Software Features in Release 12.2(8)BY1
Cisco IOS Software Documentation Set
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:
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Packet Data Serving Node Software Features in Release 12.2(8)BY1
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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:
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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]).
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 versionCisco Internetwork Operating System SoftwareIOS (tm) 7200 Software (C7200-C5IS), Version 12.2(8)BY, RELEASE SOFTWAREUpgrading 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.
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
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:
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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
Open Caveats
This section describes possible unexpected behavior in Cisco IOS Release 12.2(8)BY1.
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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.
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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.
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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 1234567890123456789012345678901A workaround is to make sure the value is exactly 32 bytes in length.
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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.
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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.
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After opening 10,000 Simple IP sessions, and PPP renegotiation is initiated, those sessions will go down.
There is no workaround.
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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.
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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.
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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.
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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.
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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.
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On the PDSN, the clear cdma pdsn statistics command may not clear the AHDLC related statistics.
There is no workaround.
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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.
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There is no workaround.
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On the PDSN, the following MIB objects may not increment even though I/O memory is locked up, and malloc failures appear.
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There is no workaround.
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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.
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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.
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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.
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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.
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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.
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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).
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After opening of Mobile IP sessions, BADSHARE Tracebacks were observed while reloading the PDSN.
There is no workaround.
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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.
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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
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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.
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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.
b.
c.
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The Cluster Controller sends two cCdmaClusterMemberStatusChange traps when the PDSN member status changes.
There is no workaround because the problem could not be reproduced.
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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.
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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.
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While displaying show aaa sessions, the PDSN crashed and auto-reloaded.
This bug is a duplicate of CSCdu58983.
There is no workaround.
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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.
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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.
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In a Cisco PDSN, the following MIB variables will return incorrect values:
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The following two variables are not supported, and will always return a "FALSE" value.
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There is no workaround.
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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:
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Release-Specific Documents
The following documents are specific to Cisco IOS Release 12.2(8)BY1:
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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:
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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
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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
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Technical Documents
Platform-Specific Documents
Documentation specific to the Cisco 7206 Router is located at the following locations:
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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.
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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
Note
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.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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