Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)ZB
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Table Of Contents
Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)ZB
Determining the Software Version
Upgrading to a New Software Release
Packet Data Serving Node Software Features in Release 12.2(8)ZB
Cisco IOS Software Documentation Set
Release 12.2 Documentation Set
Obtaining Technical Assistance
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Release Notes for the Cisco PDSN 1.2 Feature in Cisco IOS Release 12.2(8)ZB
December 2002
Cisco IOS Release 12.2(8)ZB 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)ZB is a release optimized for the Cisco PDSN Release 1.2 feature on the Cisco 7206VXR router, and Cisco 6500 Catalyst Switch platform. 7206VXR images will be available starting with first maintenance release, 12.2(8)ZB1. The current image for the 7206VXR routers is 12.2(8)BY2.
Contents
These release notes include important information and caveats for the Cisco PDSN software feature provided in Cisco IOS 12.2(8)ZB for the Cisco 7206VXR series router and Cisco 6500 Catalyst Switch platforms.
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
Release notes for the Cisco 6000 Family for 12.2T can be found on CCO at:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/cat6000/index.htm
This release note includes the following topics:
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Packet Data Serving Node Software Features in Release 12.2(8)ZB
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Introduction
Cisco PDSN is an IOS software feature that enables a Cisco 7206VXR router or a Multi-Processor WAN Application Module (MWAM) on a Catalyst 6500 Switch 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)ZB:
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Memory Requirements
Table 1 shows the memory requirements for the PDSN Software Feature Set that supports the Cisco 7206VXR 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)ZB is optimized for PDSN Release 1.2 on the Cisco 7206VXR router, and the MWAM card on the Cisco 6500 Catalyst Switch platform.
A Hardware-Software Compatibility Matrix is available on CCO for users with CCO login accounts. This matrix allows users to search for supported hardware components by entering a Cisco platform and IOS Release. The Hardware-Software Compatibility Matrix tool is available at the following URL:
http://www.cisco.com/cgi-bin/front.x/Support/HWSWmatrix/hwswmatrix.cgi
Software Compatibility
Cisco IOS Release 12.2(8)ZB is a special release that is developed on Cisco IOS Release 12.2.
Cisco IOS Release 12.2(8)ZB 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) MWAM Software (MWAM-C6IS-M), Version 12.2(8)ZB, 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
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)ZB supports the same feature sets as Cisco Release 12.2, with the exception that Cisco Release 12.2(8)ZB includes the PDSN feature. The PDSN feature is optimized for the Cisco 7206VXR router, and the Cisco MWAM card on the 6500 Catalyst Switch.
Caution
Packet Data Serving Node Software Features in Release 12.2(8)ZB
The Cisco IOS Release 12.2(8)ZB supports the same feature sets as Cisco Release 12.2, with the exceptions that Cisco Release 12.2(8)ZB includes the PDSN feature. The PDSN 1.2 feature is optimized for the Cisco 7206VXR router, and the Cisco MWAM card on the 6500 Catalyst Switch, 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 http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cavs/122mcavs.htm
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.
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Open Caveats
The following section describes possible unexpected behavior in Cisco IOS Release 12.2(8)ZB:
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The PDSN drops packets during moderate traffic conditions, thus NDR throughput is very low when compared with the maximum throughput. This degradation is observed when AHDLC fragmentation is configured on the PCF.
There is no workaround.
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Quota requests should not be sent for a non-prepaid user if the user registers over an already existing session which has a prepaid flow active.
As a workaround, register the non-prepaid user over a new session.
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MobileIP flow will not come up, if IPCP renegotiation is initiated by the MN after the session is up.
There is no workaround.
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On a Cisco router running a PDSN R1.2 image, NDR drops down to a lower value after the box is stressed for some amount of time.
There is no work around.
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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. Therefore, they do not get accounted for. This problem happens only when the RP session has been established between PCF and 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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Tracebacks occur when PDSN is reloaded with the following is configured "aaa accounting system default start-stop broadcast group radius" and the interface towards radius server is shut.
As a workaround, ensure that the interface towards the radius server is up on reload, and not configured as shut.
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On a Cisco router running the PDSN IOS image, out Access-list does not work blocking traffic over Mobile IP flows with cef switching.
There is no workaround.
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The PDSN reloads due to a software forced crash with MALLOCFAIL. This occurs when the AAA server name is misconfigured using the following commands:
aaa group server radius XXXX
aaa accounting network pdsn start-stop group YYYY
This causes memory leaks on the PDSN, and eventually the PDSN runs out of memory and reloads.
As a workaround, configure the correct aaa accounting server's name and address.
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The PDSN occasionally sends LCP-CONFREQ before sending the A11 RRP under high call setup rates.
There is no workaround.
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The SNMP query to cCdmaPdsnSystemInfo object-group does not returns anything. If the PDSN is configured to be a Controller, the query to this OBJECT-GROUP fails.
There is no workaround.
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In a PDSN Clustering environment, if a member is configured with maximum session of less than 20, A11 RRQ's will be rejected by the controller with insufficient resources for that member.
As a workaround, configure the maximum session on the member at least 20, and in it's multiples.
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Airlink attributes E1 (cdma-user-id) and I4 (cdma-airlink-qos), sent by the new PCF during a PCF-PCF handoff, are not stored correctly in the UDR. The old values for the attributes, stored earlier, are sent in the Accoutning Start Record to the RADIUS/AAA.
There is no workaround.
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Sessions opened on the PDSN will fail when the Mobile Node applies ACFC on packets during the authentication phase of PPP. This problem occurs when a "ppp acfc local request" is configured on the PDSN virtual template and applied by Mobile Node at the authentication phase of PPP.
As a workaround, do not configure "ppp acfc local request" on the PDSN virtual template.
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If payload compression is enabled, and if CCP negotiation fails, the cCdmaPppPdsnReleases and cCdmaPppTotalReleases counters get incremented.
There is no workaround.
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When the PPP session for the mobile is terminated, the PDSN sends IRDP Agent Advertisement messages to the mobile with IRDP lifetime = 0. These packets get dropped in the PDSN, due to the link going down, but get accounted for in G16 counter at the PDSN.
There is no workaround.
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If the packet from the Mobile Node needs to be fragmented, and the DF bit is set, the PDSN will reload while forwarding the packet on the tunnel (if reverse Tunneling is enabled) if fast switching is disabled on the Tunnel (and "no ip mobile tunnel route-cache" is configured).
As a workaround, do not disable the fast switching on the IP mobile tunnel.
Resolved Caveats
The following DDTS were resolved in the 12.2(8)ZB release.
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The following error message appears when performing any nv operation (write, dir, etc.), and indicates that the nvram is being corrupted
"Bad configuration memory structure -- try rewriting."
This problem occurs when a CPU is reloaded from both the direct and sup console at almost the same time (within a difference of a few seconds).
As a workaround, save the configuration again by doing a "write memory."
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Under avarage and high traffic conditions, the 6500, MWAM-based PDSN drops lot of packets.
There is no workaround.
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When a ping is made over MIP flow with reverse tunnel and compression, the downstream packets to the MN are dropped at the PDSN.
As a workaround, disable CEF, and the ping goes through over the flow.
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A new CLI [no] cdma pdsn a11 dormant ppp-idle-timeout send-termreq is implemented that allows during dormant sessions (on ppp idle timeout) a ppp termreq to be sent.
Disabling this behaviour will avoid traffic channel allocation use for cleaning up ppp sessions at the mobile.
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A PDSN member, configured under the Controller-Member architecture might reload while opening sessions.
As a workaround, do not configure the PDSN as a member under Controller-Member clustering.
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For MIP with header compression and CEF enabled, the compression counters are incorrect when TCP packets are sent over the MIP flow.
As a workaround, disable CEF, and the header compression counters work properly.
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Point-to-Point Tunneling Protocol (PPTP) tunneling may not function, and data sent by a PPTP network server (PNS) may have invalid PPTP headers. This symptom is observed after a virtual private dial-up network (VPDN) session comes up.
There is no workaround.
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Spurious memory access may be observed at the VPDN SSS process. This symptom is observed on a Cisco 7200 series when the Point-to-Point Tunnel Protocol (PPTP) is tested with Subscriber Service Switching (SSS).
There is no workaround.
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When router mobile is disabled and the re-enabled, Tunnel Fast-switching is not enabled by default.
As a workaround, enable Tunnel Fast-switching before disabling MIP on the box.
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When using a Cisco IOS PDSN image, when a Mobile transitions from a active to dormant state, the corresponding Accounting-Stop record does not have a release indicator (F13) attribute.
There is no workaround.
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When using a Cisco IOS PDSN image, the first active-dormant-active transition of MobileNode after a handoff does not produce any radius accounting records.
There is no workaround.
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When using Cisco IOS as PDSN, the compulsory tunnel indicator attribute forVPDN flows is 0 instead of 1.
There is no workaround.
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Accounting for VPDN sessions is excluding the PPP STATION (FF03) bytes from packets to PDSN and packets from LNS to PDSN. The PDSN is not accounting the PPP STATION bytes (2 bytes) in packets received from Mobile, and Packets received from the LNS.
There is no workaround.
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Acct-Input-Packets appear twice, and Acct-Input-Octets do not appear in Radius Acct Stop messages. The Acct-Input-Octets are incorectly encoded as Acct-Input-Packets.
There is no workaround.
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On a c7200 running Cisco IOS 12.2B-based PDSN, when a PPP session (for Simple IP service) comes up without IP address, neither the cCdmaPppConnectionSuccesses nor thecCdmaPppConnectionFailures counter get incremented.
There is no workaround.
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On a c7200 running Cisco IOS 12.2B-based PDSN,when a PPP negotiation fails during IPCP phase because of IP address shortage, the cCdmaPppIpcpFailures counter doesn't get incremented.
There is no workaround.
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The accounting for VSA attributes Acct-Input-Octets, Acct-Output-Octets, Acct-Input-Packets and Acct-Output-Packets is incorrect between 2 accounting stops. The packets/bytes are counted only between the last accounting start and accounting stop. The packets/bytes between the last accounting stop and accounting start are not counted.
Ther e is no workaround.
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LNS will fail to process VPDN data packets with packets incorrectly encapsulated error, when ACFC is negotiated and applied by the Mobile Node. This problem occurs on a L2tp session when a "ppp acfc local request" is configured on the PDSN (Virtual template configuration), and ACFC is applied by a Mobile Node when sending a VPDN data pack.
As a workaround, do not configure a "ppp acfc local request" on the PDSN virtual-template.
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On a Cisco PDSN, in some scenarios a visitor is deleted without decrementing the visitor count of FA; therefore, the visitor count will be greater than the active visitors.
There is no workaround.
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PPTP tunneling is broken. After the VPDN control path comes up, data sent by the PNS has invalid PPTP headers. This happens when a user attempts a PPTP session from a PPTP client and PDSN as PNS.
There is no workaround.
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The service option-based RP statistics do get incremented for PPP failures, and do not tally with box level RP statistics.
There is no workaround.
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The PDSN reloads during handoff if there is no route to the new pcf on the PDSN. If the route to pcf is available, handoff is successful.
There is no workaround.
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After executing the cdma pdsn failure-history table-size command for resizing the failure-history table, the cCdmaFailHistInfo table becomes empty.
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)ZB:
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http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122z/ 122zb8/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
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Technical Documents
Platform-Specific Documents
Documentation specific to the Cisco 7206VXR 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
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Obtaining Documentation
World Wide Web
You can access the most current Cisco documentation on the World Wide Web (WWW) at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current than printed documentation. The CD-ROM package is available as a single unit or as part of an annual subscription.
Ordering Documentation
Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.
Nonregistered CCO users can order documentation through a local account representative by calling Cisco's corporate headquarters (California, USA) at 408 526-4000 or, in North America, call 800 553-NETS (6387).
Obtaining Technical Assistance
Cisco provides CCO as a starting point for all technical assistance. Warranty or maintenance contract customers can use the Technical Assistance Center (TAC). All customers can submit technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response card included in many Cisco printed documents, or by sending mail to Cisco.
Cisco Connection Online
CCO is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.
CCO's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through CCO, you will find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online support services, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.
Customers and partners can register on CCO to obtain additional personalized information and services. Registered users may order products, check on the status of an order and view benefits specific to their relationships with Cisco.
You can access CCO in the following ways:
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You can e-mail questions about using CCO to cco-team@cisco.com.
Technical Assistance Center
The Cisco TAC is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract.
To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use http://www.cisco.com/public/support/tac.
To contact by e-mail, use one of the following addresses:
In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers and TAC e-mail addresses worldwide, consult the following web site: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
If you have a CCO login account, you can access the following URL, which contains links and tips on configuring your Cisco products:
http://www.cisco.com/kobayashi/technotes/serv_tips.shtml
This URL is subject to change without notice. If it changes, point your Web browser to CCO and click on this path: Technical Assistance Center: Technical Tips.
The following sections are provided from the Technical Tips page:
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Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
You can e-mail your comments to bug-doc@cisco.com.
To submit your comments by mail, for your convenience many documents contain a response card behind the front cover. Otherwise, you can mail your comments to the following address:
Cisco Systems, Inc.
Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate and value your comments.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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