Table Of Contents
Release Notes for Cisco 6400 NRP for Cisco IOS Release 12.1(1) DC
Determining the Software Version
Upgrading to a New Software Release
New Hardware and Software Features Supported in Release 12.1(1) DC2
New Hardware Features Supported in Release 12.1(1) DC1
New Software Features in Release 12.1(1) DC1
New Hardware Features Supported in Release 12.1(1) DC
New Software Features in Release 12.1(1) DC
Dynamic Host Configuration Protocol Relay for Unnumbered Interfaces Using ATM RBE
Session Scalability Enhancements
L2TP Tunnel Management Enhancements
L2TP Tunnel Service Authorization Enhancements
Segmentation and Reassembly Buffer Management Enhancements
PPP over Ethernet Fast Switching for Multicast
VPI/VCI Identification in RADIUS Requests
Session and Tunnel Scalability
Open Caveats—Cisco IOS Release 12.1(1) DC2
Resolved Caveats—Cisco IOS Release 12.1(1) DC2
Open and Resolved Caveats - Release 12.1(1) DC1
Open Caveats - Release 12.1(1) DC
Resolved Caveats—Cisco IOS Release 12.1(1) DC
Preexisting NRP Hardware Caveats
Determining Your NRP Part Number
Cisco IOS Software Documentation Set
Cisco IOS Release 12.1 Documentation Set
Obtaining Technical Assistance
Software Configuration Tips on the Cisco Technical Assistance Center Home Page
Release Notes for Cisco 6400 NRP for Cisco IOS Release 12.1(1) DC
February 18, 2002
Cisco IOS Release 12.1(1) DC2
78-10959-01 Rev. G0
These release notes for the Cisco 6400 NRP describe the enhancements provided in Cisco IOS Release 12.1(1) DC2. These release notes are updated as needed.
For a list of the software caveats that apply to Release 12.1(1) DC2, see the "Software Caveats" section and Caveats for Cisco IOS Release 12.1 T . The caveats document is updated for every maintenance release and is located on Cisco Connection Online (CCO) and the Documentation CD-ROM.
Use these release notes in conjunction with the cross-platform Release Notes for Cisco IOS
Release 12.1 located on Cisco Connection Online (CCO) and the Documentation CD-ROM.Contents
These release notes describe the following topics:
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Preexisting NRP Hardware Caveats
System Requirements
This section describes the system requirements for Cisco IOS Release 12.1(1) DC2:
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Memory Recommendations
Hardware Supported
Cisco IOS Release 12.1(1) DC2 supports the Cisco 6400 NRP. For detailed descriptions of the new hardware features, see the "New and Changed Information" section.
Software Compatibility
Cisco recommends that Cisco IOS Release 12.1(1) DC2 is used concurrently with Cisco IOS Release 12.1(1) DB1 for the Cisco 6400 node switch processor (NSP). For information about Release 12.1(1) DB1 for the NSP, see the Release Notes for Cisco 6400 Node Switch Processor (NSP) for Cisco IOS Release 12.1(1) DB1 .
Determining the Software Version
To determine the version of Cisco IOS software currently running on the Cisco 6400 NRP, log in to the NRP and enter the show version EXEC command:
Router> show versionCisco Internetwork Operating System SoftwareIOS (tm) C6400R Software (C6400R-G4P5-M), Version 12.1(1) DC2, EARLY DEPLOYMENTRELEASE SOFTWARE (fc1)The output includes additional information including processor revision numbers, memory amounts, hardware IDs, and partition information.
Upgrading to a New Software Release
For information about upgrading software on the Cisco 6400 Universal Access Concentrator, including upgrading a single- or dual-NRP system to a new software release, see the software note Upgrading Software on the 6400 UAC located at:
http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/6400/softnote/upgradsw.htm
For general information about upgrading to a new software release, see the product bulletin Cisco IOS Upgrade Ordering Instructions located at:
http://www.cisco.com/warp/public/cc/cisco/mkt/ios/prodlit/957_pp.htm
If you do not have an account on CCO and want general information about upgrading to a new software release, see the product bulletin Cisco IOS Software Release 11.3 Upgrade Paths and Packaging Simplification (#703: 12/97) on CCO at:
Technical Documents: Product Bulletins: Software:Cisco IOS 11.3:
Cisco IOS Software Release 11.3 Upgrade Paths No. 703This product bulletin does not contain information specific to Cisco IOS Release 12.1 DC but provides generic upgrade information that may apply to Cisco IOS Release 12.1 DC.
Feature Table
The Cisco IOS software is packaged in software images. Each image contains a specific set of Cisco IOS features. Table 2 lists the features supported by the Cisco 6400 NRP image called c6400r-g4p5-mz in this release.
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New and Changed Information
The following sections list the new hardware and software features supported by the Cisco 6400 NRP for Release 12.1 DC2.
New Hardware and Software Features Supported in Release 12.1(1) DC2
There are no new hardware and software features for the Cisco 6400 UAC supported in 12.1(1) DC2.
New Hardware Features Supported in Release 12.1(1) DC1
There are no new hardware features for the Cisco 6400 UAC supported in 12.1(1) DC1.
New Software Features in Release 12.1(1) DC1
The following new software feature is supported by the Cisco 6400 UAC for Cisco IOS Release 12.1(1) DC1.
Local Forwarding
Local Forwarding enables the Node Route Processor—Service Selection Gateway (NRP-SSG) to forward packets locally. For more information, see the Node Route Processor—Service Selection Gateway Enhancements III feature module.
New Hardware Features Supported in Release 12.1(1) DC
There are no new hardware features for the Cisco 6400 UAC supported in 12.1(1) DC.
New Software Features in Release 12.1(1) DC
The following new software features are supported by the Cisco 6400 UAC for Cisco IOS Release 12.1(1) DC.
Cisco Express Forwarding
CEF switching is now supported for PPP over ATM (PPPoA), generic routing encapsulation (GRE), and Network Address Translation (NAT).
Dynamic Host Configuration Protocol Relay for Unnumbered Interfaces Using ATM RBE
Dynamic Host Configuration Protocol (DHCP) Relay now supports unnumbered interfaces using ATM Routed Bridge Encaps (RBE). DHCP Relay automatically adds a static host route specifying the unnumbered interface as the outbound interface.
DHCP Relay can also now use the ip dhcp database global configuration command. This optional command allows the DHCP Relay to save route information to a TFTP, FTP, or RCP server for recovery after reloads.
For more information on DHCP, see "Configuring DHCP" in the Cisco IOS IP and IP Routing Configuration Guide and "DHCP Commands" in the Cisco IOS IP and IP Routing Command Reference. For more information on the ATM RBE feature, see the ATM Routed Bridge Encaps feature module.
Session Scalability Enhancements
The following enhancements provide better session stability:
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For more information, see the Session Scalability Enhancements II feature module.
L2TP Tunnel Management Enhancements
The L2TP tunnel management enhancements include the following features:
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For more information, see the L2TP Tunnel Management Enhancements feature module.
L2TP Tunnel Service Authorization Enhancements
These enhancements enable the L2TP access concentrator (LAC) to conduct static or dynamic tunnel service authorization. A static domain name can be configured on the ATM PVC port to override the domain name supplied by the client. If a static domain name is not configured, the LAC conducts dynamic tunnel service authorization, which now includes two steps.
1.
2.
For more information, see the L2TP Tunnel Service Authorization Enhancements feature module.
L2TP Tunnel Switching
This feature enables the Cisco 6400 NRP to terminate tunnels from LACs and forward the sessions through new L2TP tunnels selected independently of the client-supplied domains. The NRP as a tunnel switch performs VPDN tunnel authorization based on the ingress tunnel names that are mapped to specified LNSes.
For more information, see the L2TP Tunnel Switching feature module.
Segmentation and Reassembly Buffer Management Enhancements
This feature includes the following enhancements to segmentation and reassembly (SAR) buffer management:
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For more information, see the Segmentation and Reassembly Buffer Management Enhancements feature module.
PPP Autosense
The PPP Autosense feature enables the network access server (NAS) to:
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For more information, see the PPP Autosense feature module.
PPP over Ethernet Fast Switching for Multicast
PPPoE now supports fast switching for multicast in addition to Cisco Express Forwarding (CEF).
VPI/VCI Identification in RADIUS Requests
This feature enables the RADIUS VC Logging (Cisco IOS Release 12.0(5) DC) feature to support PPPoE. With RADIUS VC Logging enabled, the RADIUS network access server (NAS) port field is extended and modified to carry VPI/VCI information. This information is logged in:
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For more information, see the RADIUS VC Logging feature module.
Important Notes
Session and Tunnel Scalability
Cisco IOS Release 12.1(1) DC2 supports the number of sessions and tunnels shown in Table 3. While using NRP-SSG Cisco IOS Release 12.1(1) DC2 supports the number of sessions and tunnels shown in Table 4.
Note
Software Caveats
Caveats describe unexpected behavior in the Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. This section contains open caveats for the current Cisco 6400 NRP IOS release only. Because Release 12.1(1) DC2 is the initial base release, there are no resolved caveats. For a list of the resolved caveats, see the next maintenance release.
Caveats in Cisco IOS Release 12.1(1) T also apply to Release 12.1(1) DC2. For information on caveats in Cisco IOS Release 12.1(1) T, see Caveats for Cisco IOS Release 12.1 T located on CCO and the Documentation CD-ROM.
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Open Caveats—Cisco IOS Release 12.1(1) DC2
There are no open caveats specific to Cisco IOS Release 12.1(1) DC2 that require documentation in the release notes.
Resolved Caveats—Cisco IOS Release 12.1(1) DC2
All the caveats listed in this section are resolved in Cisco IOS Release 12.1(1) DC2. This section describes only severity 1 and 2 caveats and select severity 3 caveats.
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An error can occur with management protocol processing. Please use the following URL for further information:
http://www.cisco.com/cgi-bin/bugtool/onebug.pl?bugid=CSCdw65903
Open and Resolved Caveats - Release 12.1(1) DC1
There are no open and resolvedcaveats specific to Cisco IOS Release 12.1(1) DC1 that require documentation in the release notes
Open Caveats - Release 12.1(1) DC
This section describes possibly unexpected behavior by Cisco IOS Release 12.1(1) DC. This section describes severity 1, 2, and selected severity 3 caveats.
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After all NRP-SSG users log off a specific service, the service object is cleared, but the subblock associated with the interface is not reset. As a result, all traffic from the interface is still treated by NRP-SSG as downstream traffic.
Workaround (do one of the following):
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Changing service binding while using the service might cause an inconsistency in the service binding table and break the NRP-SSG data path forwarding table.
Workaround: Avoid changing service binding while the service is in use.
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A node route processor (NRP) ATM interface stops sending when there are multiple particles with data-length 0 at the last particle. The only way to exit this situation is to use the shutdown interface configuration command followed by the no shut interface configuration command. There is no workaround.
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Traffic coming from a Fast Ethernet (FE) interface on a node route processor (NRP), with Inter-Switch Link (ISL) encapsulation, forwarded out of an ATM Route Bridge Encapsulation (RBE) interface, might not be fast-switched but process-switched when you use the bridge irb global configuration command on the NRP.
Workaround: Remove the bridge irb global configuration command from the configuration.
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If atm ilmi-pvc-discovery subinterface is configured on both the ATM 0/0/0 interface and an ATM subinterface, the ATM PVC will not come up after NRP reloads, unless you do a shut/no shut on the ATM 0/0/0 interface.
Workaround: Avoid using atm ilmi-pvc-discovery on ATM subinterfaces.
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The NRP should use "big" buffers to do IP Multicast packet replication instead of using "very big" buffers when the payload size is 1500 bytes. Since the NRP has a limited number of "very big" buffers, memory allocation failure may be seen if the payload size is 1500 bytes and IP Multicast is enabled.
Workaround: Increase the number of "very big" buffers.
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When an NRP-SSG subscriber exceeds the maximum number of services determined by the ssg maxservice global configuration command, the Cisco SSD incorrectly displays the following message: "The server returned an invalid or unrecognized response."
The correct message reads: "You have reached the maximum allowed number of concurrently logged in services for your system, host-ID. Please logoff of at least one service, and try your service logon request again."
Workaround: Simply click the "Ok" button to recognize the error, and select the service on the viewService frame again. The correct message will appear.
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The NRP-SSG connection traffic counter always reads zero for the input direction. There is no workaround.
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If you turn on traffic shaping on 400 or more PVCs, and heavy traffic causes the PVCs to become congested simultaneously, random PPP sessions might be dropped.
Workaround (do one of the following):
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The NRP runs out of memory with 2000 NRP-SSG PPPoE sessions using L2TP services. Current testing shows normal system behavior with 1000 NRP-SSG PPPoE sessions and 50 L2TP tunnels.
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The NRP-SSG DNS fault tolerance feature does not work while CEF is enabled. The secondary DNS sever becomes unreachable upon switchover.
Workaround: Disable CEF.
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Traffic shaping configuration using the "vbr-nrt <pcr> <scr> <input burst>" under VC-class command cannot be removed by entering "no vbr-nrt <pcr> <scr> <input burst>".
Workaround: Remove the entire VC-class, and re-enter the VC-class configuration without traffic shaping.
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The NRP crashes during reload when both of the following conditions are met:
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By default, IOMEM = 36MB.
Workaround (use one of the following):
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The execution of the Show ip nat translation verbose may cause the 6400 NRP to reload. Workaround: Set the terminal length to "term len 0" before executing the Show ip nat translation verbose.
Resolved Caveats—Cisco IOS Release 12.1(1) DC
There are no resolved caveats specific to Cisco IOS Release 12.1(1) DC that require documentation in the release notes.
Preexisting NRP Hardware Caveats
This section describes possible unexpected behavior by earlier hardware versions of the NRP. To determine your NRP part number (P/N), see the "Determining Your NRP Part Number" section.
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Affected Part Number: 800-03785-03
Symptom:
While the NSP is in Slot 0A of a single NSP system, the NRPs reset during NSP reloads or resets.Workaround:
In a non-redundant system using an NSP of P/N 800-03785-03, place the NSP in Slot 0B.•
Affected Part Numbers:
800-03655-01, 800-03655-02, 800-03655-03, 800-03655-04Symptoms:
Regardless of any boot system global configuration command entries in the startup configuration, the NRP boots the first image in Flash after a reset. This problem occurs after one of the following actions:–
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Workaround:
To avoid this problem, make sure that the desired image is the first file on the Flash device. Complete the following steps in EXEC mode:a.
b.
c.
d.
Recovery:
If you encounter the problem before implementing the workaround, reset the NRP once by using the hw-module slot number reset EXEC command on the NSP. As long as the NSP sends a single reset to the NRP, the NRP does not ignore the boot system global configuration command entries in the startup configuration.•
Affected Part Numbers:
800-03655-04, 800-03655-05, 800-03655-06Symptoms:
With or without redundancy configured, an NRP inserted into a live system might reset the NRP in the adjacent slot of the slot pair. NRP slot pairs are slots 1-2, 3-4, 5-6, and 7-8.Workaround (use one of the following):
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Affected Part Number: 800-03655-01
Symptoms:
When the terminal server is configured such that hardware flow control is enabled on the port attached to the NRP console, the NRP console port does not respond.Workaround:
Configure your terminal server to disable hardware flow control on the port attached to the NRP console.•
Affected Part Numbers:
800-03655-01, 800-03655-02, 800-03655-03, 800-03655-04, 800-03655-05, 800-03655-06, 800-03655-07, 800-03655-08Symptom:
NSP reports unknown cardtype when the chassis is populated primarily with NRPs.Workaround (use one of the following):
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When the Service Selection Gateway (SSG) is enabled after an upgrade from Cisco IOS Release 12.0(3) DC or Release 12.0(5) DC to Release 12.0(7) DC or higher, the SSG transparent passthrough feature is no longer supported.
Workaround: To enable non-SSG connections to pass through the NRP, disable the SSG with the no ssg enable command.
Determining Your NRP Part Number
To determine the NRP part number, use one of the following methods with the information in Table 5:
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The following example displays the show nrp command output for an NRP with part number 73-3082-06:
6400-nrp# show nrpRouter installed in slot 5Network IO Interrupt Throttling:throttle count=0, timer count=0active=0, configured=0netint usec=4000, netint mask usec=200NRP CPU ID EEPROM:Hardware revision 4.255 Board revision A0Serial number 12346818 Part number 73-3082-06
Test history 0x0 RMA number 00-00-00EEPROM format version 2EEPROM contents (hex):0x00: 02 E3 04 FF 00 BC 65 C2 49 0E 26 05 00 00 00 000x10: 50 00 00 00 07 CF 04 09 00 00 00 78 00 00 00 006400-nrp#
Related Documentation
The following sections describe the documentation available for the Cisco 6400 universal access concentrator. The most up-to-date documentation can be found on the web via Cisco Connection Online (CCO) and on the Documentation CD-ROM. These electronic documents might contain updates and modifications made after the hard copy documents were printed.
These release notes should be used in conjunction with the documents listed in the following sections:
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Release-Specific Documents
The following documents are specific to Cisco IOS Release 12.1 and are located on CCO and the Documentation CD-ROM:
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On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes
On the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes
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Technical Documents
Platform-Specific Documents
The documents listed in Table 6 are available for the Cisco 6400 UAC on CCO and the Documentation CD-ROM.
To access Cisco 6400 documentation on CCO, follow this path:
Technical Documents: Documentation Home Page: Aggregation Solutions:
Cisco 6400 Universal Access ConcentratorTo access Cisco 6400 documentation on the Documentation CD-ROM, follow this path:
Aggregation Solutions: Cisco 6400 Universal Access Concentrator
Feature Modules
Feature modules describe new features supported by Cisco IOS Release 12.1 DC 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: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation: New Features in 12.1-Based Limited Lifetime Releases: New Features in Release 12.1 DC
On the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1: New Feature Documentation:
New Features in 12.1-Based Limited Lifetime Releases: New Features in Release 12.1 DCCisco 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: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.1: Configuration Guides and Command ReferencesOn the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1:
Configuration Guides and Command ReferencesCisco IOS Release 12.1 Documentation Set
Table 7 describes the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form ordered.
Note
On CCO at:
Technical Documents: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.1On the Documentation CD-ROM at:
Cisco IOS Software Configuration: Cisco IOS Release 12.1
Note
Obtaining Documentation
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com. Translated documentation can be accessed at http://www.cisco.com/public/countries_languages.shtml.
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 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 Cisco Connection Online (CCO) as a starting point for all technical assistance. Warranty or maintenance contract customers can use the Technical Assistance Center. All customers can submit technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response card included in many printed docs, or by sending mail to Cisco.
Cisco Connection Online
Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online 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 self-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 Technical Assistance Center (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 www.cisco.com/techsupport.
To contact by e-mail, use one of the following:
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 log-in 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, press Login, 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 95134-9883
