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Cisco IOS Software Releases 12.1 Special and Early Deployments

Cisco 6400 NSP � Release Notes for Cisco IOS Release 12.1(4)DB1

Table Of Contents

Cisco 6400 NSP - Release Notes for Cisco IOS Release 12.1(4)DB2

Contents

System Requirements

Memory Recommendations

Supported Hardware

Software Compatibility

Determining the Software Version

Upgrading to a New Software Release

Feature Table

New and Changed Information

No New Features in Release 12.1(4)DB2

New Features in Release 12.1(4)DB1

NRP-2 Support

Input Translation Table Enhancements

No New Features in Release 12.1(3)DB

No New Features in Release 12.1(1)DB1

Important Notes

ATM Generic Flow Control Field

NSP Disk Backup

NSP Disk Mirroring Feature

Session Scalability Commands

Using Verbose Debug Options

Web Console Issues

Microsoft Internet Explorer 4.x

Netscape Navigator 4.x

Software Caveats

Open Caveats—Release 12.1(4)DB2

Closed and Resolved Caveats—Release 12.1(4)DB2

Open Caveats—Release 12.1(4)DB1

Closed and Resolved Caveats—Release 12.1(4)DB1

Closed and Resolved Caveats—Release 12.1(4)DB

Preexisting NSP Hardware Caveats

Determining Your NSP Part Number and Hardware Version

Related Documentation

Release-Specific Documents

Platform-Specific Documents

Feature Modules

Cisco IOS Software Documentation Set

Documentation Modules

Cisco IOS Release 12.1 Documentation Set Contents

Obtaining Documentation

World Wide Web

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Contacting TAC by Using the Cisco TAC Website

Contacting TAC by Telephone


Cisco 6400 NSP - Release Notes for Cisco IOS Release 12.1(4)DB2


February 16, 2002


Note You can find the most current Cisco IOS documentation on Cisco.com. This set of electronic documents might contain updates and modifications made after the hard-copy documents were printed.


These release notes for the Cisco 6400 node switch processor (NSP) describe the enhancements provided in Cisco IOS Release 12.1(4)DB2. These release notes are updated as needed.

For a list of the software caveats that apply to Release 12.1(4)DB2, see the "Preexisting NSP Hardware 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.com 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.com and the Documentation CD-ROM.

Contents

These release notes describe the following topics:

System Requirements

New and Changed Information

Important Notes

Software Caveats

Preexisting NSP Hardware Caveats

Related Documentation

Obtaining Documentation

Obtaining Technical Assistance

System Requirements

This section describes the system requirements for Cisco IOS Release 12.1(4)DB2 and includes the following sections:

Memory Recommendations

Supported Hardware

Software Compatibility

Determining the Software Version

Upgrading to a New Software Release

Feature Table

Memory Recommendations

Table 1 lists the memory recommendations for the NSP.

Table 1 Memory Recommendations for the Cisco 6400 NSP 

Product Name
Image Names
Recommended Main Memory
Recommended Flash Memory
Cisco 6400 Series
IOS FOR NSP

c6400s-wp-mz
c6400s-html.tar

The standard 64 MB DRAM memory configuration supports up to 12K virtual circuits (VCs).

128 MB DRAM is recommended for supporting up to 32K VCs, or for using ATM RMON or ATM Accounting.

128 MB DRAM is also recommended for an upgrade from an earlier release to Cisco IOS Release 12.1(4)DB2,

20 MB


Supported Hardware

Cisco IOS Release 12.1(4)DB2 supports the Cisco 6400 NSP and the NSP with Stratum 3/BITS (NSP-S3B). The NSP-S3B, otherwise identical to the NSP, is required to use the Building Integrated Timing Supply (BITS) Network Clocking software feature. For detailed descriptions of the new hardware features, see the "New and Changed Information" section and the "Related Documentation" section.

Software Compatibility

Cisco recommends that Cisco IOS Release 12.1(4)DB be used concurrently with Cisco IOS Release 12.1(4)DC2 for the Cisco 6400 node route processor (NRP). For information about Release 12.1(4)DC2 for the NRP, see the Release Notes for Cisco 6400 Node Route Processor (NRP) for Cisco IOS Release 12.1(4)DC2.

Determining the Software Version

To determine the version of Cisco IOS software currently running on the Cisco 6400 NSP, log in to the NSP and enter the show version EXEC command:

Router> show version
Cisco Internetwork Operating System Software 
IOS (tm) C6400 Software (C6400S-WP-M), Version 12.1(4)DB2, EARLY DEPLOYMENT
RELEASE 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 (UAC), including upgrading a single- or dual-NSP 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 Cisco.com 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 Cisco.com at:

Technical Documents: Product Bulletins: Software:Cisco IOS 11.3:
Cisco IOS Software Release 11.3 Upgrade Paths No. 703

This product bulletin does not contain information specific to Cisco IOS Release 12.1 DB but provides generic upgrade information that may apply to Cisco IOS Release 12.1 DB.

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 NSP image called c6400s-wp-mz in this release.


Note This table might not be cumulative or list all the features in each image. You can find the most current Cisco IOS documentation on Cisco.com. This set of electronic documents might contain updates and modifications made after the hard-copy documents were printed. If you have a Cisco.com login account, you can find image and release information regarding features prior to Cisco IOS Release 12.1(4)DB2 by using the Feature Navigator tool at: http://www.cisco.com/go/fn.


Table 2 Features Supported by the Cisco 6400 NSP in Cisco IOS Release 12.1(4)DB2 

Access lists on Interim Local Management Interface (ILMI) registration

Asynchronous Transfer Mode (ATM) access lists

ATM accounting

ATM accounting enhancements

ATM Address Resolution Protocol (ARP) client on NSP

ATM ARP server on NSP

ATM remote monitoring (RMON)

ATM soft restart

BITS External Network Clock Source

Closed user groups (CUGs)

Dual leaky bucket policing

Dynamic Host Configuration Protocol (DHCP) client support

E.164 address translation and autoconversion

Hardware redundancy

Interim-Interswitch Signaling Protocol (IISP)

ILMI version 4.0

Input Translation Table (ITT) enhancements

Internet Protocol (IP)

LANE1 client (LEC) and LANE Services (LES2 /BUS3 /LECS4 ) on NSP

Left-justified E.164 authority and format identifier (AFI) support

Logical multicast support (up to 254 leaves per output port, per point-to-multipoint virtual circuits [VCs])

Multiple, weighted, dynamic thresholds for selective packet marking and discard

Multipoint-to-point User-Network Interface (UNI) signaling

Multiprotocol Label Switching (MPLS) Label Switch Router (LSR)

Network clocking enhancements for smooth switchover

Network Time Protocol (NTP)

Operation, administration, and maintenance (OAM) F4 and F5

Per-VC or per-VP nondisruptive snooping

Private Network Node Interface (PNNI) hierarchy

Point-to-point and point-to-multipoint permanent virtual channel connections (VCCs) and virtual path connections (VPCs)

Point-to-point and point-to-multipoint switched VCCs and VPCs (UNI 3.0)

Point-to-point and point-to-multipoint switched VCCs and VPCs (UNI 3.1)

Point-to-point and point-to-multipoint switched VCCs and VPCs (UNI 4.0)

Port snooping

Scheduler/Service Class/permanent virtual circuit (PVC) configuration

Shaped virtual private tunnels for constant bit rate (CBR) traffic

Signaling diagnostics and Management Information Base (MIB)

Simple Network Management Protocol (SNMP)

Soft VCCs and VPCs

Stratum 3 Internal Clock Accuracy

Substitution of other service categories in shaped virtual private tunnels

Support for nonzero minimum cell rate (MCR) on available bit rate (ABR) connections

Synchronous Optical Network (SONET) automatic protection switching (APS) support

Telco alarm support

Telnet

Terminal Access Controller Access Control System Plus (TACACS+)

Token Ring LANE services

Virtual path identifier/virtual channel identifier (VPI/VCI) range support in ILMI 4.0

Virtual private tunneling

Web-based configuration

1 LANE = LAN emulation

2 LES = LAN Emulation Server

3 BUS = broadcast and unknown server

4 LECS = LAN Emulation Configuration Server


New and Changed Information

The following sections list the new hardware and software features supported by the Cisco 6400 NSP for Cisco IOS Release 12.1 DB1.

No New Features in Release 12.1(4)DB2

There are no new hardware and software features in Cisco IOS Release 12.1 DB2.

New Features in Release 12.1(4)DB1

NRP-2 Support

The NSP provides support for the second-generation node route processor (NRP-2) for the Cisco 6400 platform, which is introduced in Cisco IOS Release 12.1(4) DC.

The NSP performs the following functions for the NRP-2:

Switching of incoming virtual paths (VPs) to the appropriate NRP-2.

Controlling of configuration storage, console traffic, and network management. This provides a more manageable and integrated platform. You can use a single console port on the NSP to access the console lines of all NRP-2s in the Cisco 6400 chassis, and use a single management Ethernet interface on the NSP to monitor all NRP-2s in the system.

The NSP also supports the NRP-1, but does not perform the above-mentioned functions for the NRP-1. These functions are performed by the NRP-1 itself. Table 3 lists the functions that the NSP performs for the NRP-2 and shows how the NRP-1 performs these functions.

Table 3 NSP Support for the NRP-2 in Comparison to the NRP-1 

Characteristic
Supported by NSP for NRP-2
Supported by NRP-1

Location of software images, configurations, and crash information

PCMCIA1 disk on NSP

NRP-1 memory (built-in or internal Flash)

Message logging

NRP-2 messages are logged on both the NSP and NRP-2. NRP-2 messages on the NSP include the NRP-2 slot number.

Messages are logged on the NRP-1 as local messages.

Console line access

Indirect external connection via the NSP. NSP contains a virtual communication server to access the NRP-2 console.

Direct external connection to NRP-1 console port or auxiliary port

ROMMON2

NRP-2 ROM state information is stored on the NSP PCMCIA disk.

NRP-1 ROM state information stored locally on NRP-1

SNMP3

Standard SNMP services

Standard SNMP services, or can use the NSP as the proxy forwarder

1 PCMCIA = Personal Computer Memory Card International Association

2 ROMMON = ROM Monitor

3 SNMP = Simple Network Management Protocol


For more information about how the NSP supports the NRP-2, see the NRP-2 feature module.

Input Translation Table Enhancements

This software feature adds three enhancements that display and alter switch behavior in managing the input translation table (ITT) resource.

The ITT is a hardware data structure used in the NSP for handling the incoming cells. It consists of entries that, for virtual circuit (VC) switching, are allocated in contiguous blocks, while each block is dedicated to a virtual path identifier (VPI) on an interface. Each entry specifies whether a virtual channel identifier (VCI) is valid within a VPI. The allocated blocks must be a power of two in sizes such as 16, 32, 64, and so on. The ITT is used only when both interfaces that the VC transits through are up.

The NSP has a single ITT, organized in two banks of 32K entries each. When a VC is created, a block of entries is allocated in the ITT for that VPI. The block size should be a power of two that is greater than or equal to the VCI value. This limits the use of large VCI values and also the distribution of VCIs on VPIs as the number of VCs approaches 32K. When an additional VC is added to a VPI that requires a larger block size than the current block, the current block is copied to a new larger block, and the original block is freed. This leaves a series of small-sized blocks that are unused. ITT memory is fragmented due to this growing technique.

In Release 12.1(4)DB1, the NSP has the following three new functions:

Fragmentation minimization
New configuration commands to minimize fragmentation enable the NSP to automatically determine the minimum ITT block size needed to support the PVCs configured for each interface and VPI. When an interface comes up, the minblock command specifies the ITT block size requested for a VPI on that interface.

ITT block shrinking
By default, the ITT blocks grow as necessary to accommodate high VCI values for a given port VPI, but ITT space is not returned unless the entire ITT block is free. A new command is introduced that reduces the size of an ITT block when a VC with a high-numbered VCI is deleted.

Capability to view used/unused ITT blocks
A command to display details of the used and unused ITT blocks is also added. This gives a picture of the quantity and quality of ITT utilization at a given time. The output of the show command allows you to view details of the free blocks by size and bank, the aggregate free space left, and the location of blocks that are in use.


Note The new configuration commands for this feature require additional processing, which slightly reduces call setup rates and slightly increases memory usage when the modes are enabled.


For more information, see the Input Translation Table Management Enhancements feature module.

No New Features in Release 12.1(3)DB

There are no new features in Cisco IOS Release 12.1(3)DB

No New Features in Release 12.1(1)DB1

There are no new features in Cisco IOS Release 12.1(1)DB1

Important Notes

The following sections contain important information about the use of your Cisco 6400 UAC NSP.

ATM Generic Flow Control Field

When an ATM cell is received on the NSP, the generic flow control (GFC) field of the ATM cell is passed without modification to the outbound virtual circuit. This is not compliant with the ATM Forum UNI specification, version 3.1, which requires all bits of the GCF field to be reset to zero.

NSP Disk Backup

The Cisco IOS disk file system is based on the DOS ATA file system. As with DOS Windows systems, the contents of the disk might become corrupted with improper system shutdown. Make sure to back up the contents of your NSP disk to avoid data loss.

Backups can be made to a second flash disk in your primary NSP, to a flash disk in your secondary NSP, or to an off-system server (via FTP, TFTP, or RCP).

If the flash disk does become corrupted, there are two recovery options:

Remove the disk, install it in a laptop PC, and run chkdsk on the disk.

Reformat the disk in Cisco IOS and restore the data from your backup source.

NSP Disk Mirroring Feature

The NSP disk mirroring feature is not yet supported in Cisco IOS Release 12.1(4)DB2. However, a preliminary version of the feature is included in this release and you are free to experiment with the feature. If you do so, make sure to back up all disk data before doing any tests.

The following steps show you how to enable the disk mirroring feature:

Switch#
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#redundancy
Switch(config-r)#main-cpu
Switch(config-r-mc)#mirror
Switch(config-r-mc)#end
Switch#

After completing the above-mentioned steps, the primary and secondary disks will automatically be synchronized. To display the sync status, use the following CLI command:
Switch#sh redundancy sync-status

To write to disks in the mirrored fashion, use the "mirrored disk label", which is "mir-disk0:" and "mir-disk1:" respectively, as opposed to the original "disk0:" and "disk1:"—for example:
Switch#copy tftp:my_file mir-disk0:

Session Scalability Commands

Table 4 lists VP switching session scalability commands with recommended settings that apply to the NSP in Cisco IOS Release 12.1(4)DB2.

Table 4 VP Switching Session Scalability Commands with Recommended Settings for the NSP 

Configuration Task and Commands
Guidelines

Setting the EFCI and ABR Marking Threshold:

NSP(config)# atm threshold-group number marking-threshold pct

1. Purpose

Specifies the threshold at which the per-connection queue is considered full for EFCI1 marking and ABR2 relative-rate marking.

2. Symptoms

Use when the threshold group becomes congested (the cumulative number of cells on the queues of VCs in the threshold group approaches the configured max-cells value) and the maximum number of cells per queue shrinks from the threshold group max-queue-limit to the min-queue-limit. As the queue size changes, the marking threshold changes, and the installed threshold is made as close as possible to the percent of queue-full specified.

3. Recommended Settings

To achieve a large number of sessions, Cisco recommends a setting of 80% on the NSP.

Setting the Largest per-VC Queue Limit:

NSP(config)# atm threshold-group number max-queue-limit cells

1. Purpose

Specifies the largest per-VC queue limit for a specified threshold group.

2. Symptoms

Use when the threshold group becomes congested (the cumulative number of cells on the queues of the VCs in the threshold group approaches the configured max-cells value) and the maximum number of cells per queue shrinks from the threshold group max-queue-limit to the min-queue-limit.

3. Recommended Settings

To achieve a large number of sessions, Cisco recommends a setting of 16,383 (that is, the value for cells) on the NSP.

Setting the Smallest per-VC Queue Limit:

NSP(config)# atm threshold-group number min-queue-limit cells

1. Purpose

Specifies the smallest per-VC queue limit for a specified threshold group.

2. Symptoms

Use when the threshold group becomes congested (the cumulative number of cells on the queues of VCs in the threshold group approaches the configured max-cells value) and the maximum number of cells per-queue shrinks from the threshold group max-queue-limit to the min-queue-limit.

3. Recommended Settings

To achieve a large number of sessions, Cisco recommends a setting of 1023 (that is, the value for cells) on the NSP.

1 EFCI = explicit forward congestion indication

2 ABR = Available Bit Rate


Using Verbose Debug Options

On a dual-NSP system, switchovers can occur if verbose debugging commands, such as debug all or debug oir commands, are used. To avoid this situation when using verbose debug commands, execute the redundancy keepalive disable command at the EXEC prompt prior to turning on the debug command. After debugging is disabled, enter the redundancy keepalive enable command to restore normal system operation.

Web Console Issues

The Web Console application is designed to use JavaScript, which is available with both Netscape Navigator and Microsoft Internet Explorer. However, a number of issues are present when using either application. To date, using Netscape Navigator 4.x has resulted in fewer issues than Microsoft Internet Explorer 4.x.

Before using the Web Console application, verify that your browser is set to use at least 4 MB (4096 KB) of cache memory.

The following sections tell how to deal with some of the browser issues affecting each application.

Microsoft Internet Explorer 4.x

Web Console might not reflect the most current redundancy status and autosynchronization setting because the check box and option buttons are not displayed properly. Therefore, you must verify your configuration by viewing the configuration file.

An empty dialog box might display after you apply new settings in any of the Web Console pages. If an empty dialog box is displayed, click the Internet Explorer Refresh button to view your new settings.

The show interface command on the Status page fails with Internet Explorer. There is no workaround, so this function is not available.

Netscape Navigator 4.x

If a blank window is displayed after you resize your Navigator window, click the Reload button to redisplay the page. Frequent and rapid clicking on the Web Console Status page can cause syntax and LED errors. This problem is eliminated if the browser cache is set to 4096 KB.

Software Caveats

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only select severity 3 caveats are included in the caveats document.

All caveats in Cisco IOS Release 12.1 and Cisco IOS Release 12.1 T are also in Cisco IOS Release 12.1(4)DB2.

For information on caveats in Cisco IOS Release 12.1, see Caveats for Cisco IOS Release 12.1.

For information on caveats in Cisco IOS Release 12.1 T, see the Caveats for Cisco IOS Release 12.1 T, which lists severity 1 and 2 caveats and select severity 3 caveats and is located on Cisco.com and the Documentation CD-ROM.

This section contains open caveats for the current Cisco 6400 NSP Cisco IOS release only and includes severity 1, severity 2, and select severity 3 and severity 4 caveats (severity 4 caveats are minor caveats).


Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, log in to Cisco.com and click Software Center: Cisco IOS Software: Cisco Bugtool Navigator II. Another option is to go to http://www.cisco.com/support/bugtools.


Open Caveats—Release 12.1(4)DB2

There are no open caveats specific to Cisco IOS Release 12.1(4)DB2 that require documentation in the release notes.

Closed and Resolved Caveats—Release 12.1(4)DB2

This section describes caveats that have been closed and resolved in Cisco IOS Release 12.1(4)DB2. This section describes severity 1, 2, and select severity 3 and 4 caveats.

CSCdw65903

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 Caveats—Release 12.1(4)DB1

This section describes possibly unexpected behavior by Cisco IOS Release 12.1(4)DB1. This section describes severity 1, 2, and select severity 3 and 4 caveats.

CSCdr55905

The NRP-2 configuration is held on the NSP PCMCIA Disk. When you attempt to save the configuration on the NRP-2, the process on the NSP currently does not check for available disk space before trying to write the configuration to the disk. This might cause the file to be stored on the disk incompletely, or not at all. Generally this is not an issue, because a chassis alarm is generated when the disk space gets low.

Workaround: Check the disk space on the NSP and check any disk alarms before saving NRP-2 configurations.

CSCdr61244

Opening a console connection to a chassis slot that is empty or that does not contain an NRP-2 yields a traceback message such as the following:

%ALIGN-3-READEXCEPTION: Warning : read access failed at physical addr

As an example, the following situation would cause such a message to come up:

The NSP IP address is 10.1.5.4 and there is no NRP-2 in slot 4. If the user does a "telnet 10.1.5.4 2004", the traceback message above will appear on the NSP console and in the message log (if the message log is enabled). The traceback message is harmless.

Workaround: Do not attempt to open console connections to empty slots.

CSCdr76980

The NSP disk-format operations to the PCMCIA disk in slot 1 might affect concurrent disk operations to the disk in slot 0.

Workaround: As the disk in slot 0 is used for storing NRP-2 system configuration, the user should not perform formatting operations on disk 1 while the NRP-2 uses disk 0.

CSCdr83804

The NRP-2 booting and configuration operations depend on the presence of the PCMCIA disk in slot 0 of the NSP. Removal of that disk during NRP-2 disk operations, including booting and the saving of configurations, may result in an unexpected reload of the NRP-2.

Workaround: Assure that no NRP-2 disk operations are in progress before removing the PCMCIA disk from slot 0 of the NSP.

CSCdr88742

The NRP-2 running configuration is saved on the NSP PCMCIA disk. If that disk is not present, the configuration cannot be saved. The current NRP-2 software does not warn the user if the configuration has not been saved correctly.

Workaround: Make sure that the PCMCIA disk is present on the NSP before saving the NRP-2 running configuration.

CSCds02020

Resetting the NRP-2 with the hw-module slot x reset NSP command while the NRP-2 has pending console output, causes bus error warning messages to appear on the NSP console and in the NSP error log. Although there is no workaround, the messages are simply a warning and are harmless.

CSCds24164

After inserting an NRP-2 into the Cisco 6400 chassis, the NSP console will stall for 10 to 30 seconds. The NSP prevents user input and stalls preexisting user input in order to assure internal data consistency and to properly bring the NRP-2 card online. There is no workaround.

CSCds27879 and CSCds67665

If the NRP-2 is reset or loses power while the configuration is being saved to a storage medium, the configuration file might become corrupted. Attempting to restart the NRP-2 might cause the NRP-2 to reload unexpectedly.

Workaround: Do not reset the NRP-2 after issuing a command that saves the configuration file, but wait until the saving process has been completed.

If the problem occurs due to a power loss or accident, the storage medium needs to be formatted after the NRP-2 has been rebooted. Formatting the storage medium causes all data on the storage medium to be lost. If possible, before starting the formatting process, copy the data on the storage medium that needs to be formatted to another storage medium. When the formatting process has been completed, copy the data back to the storage medium that has been formatted and restore the corrupt configuration file from a backup copy.

CSCds51415

During a power-on condition, if an NRP-2 is in a lower-numbered slot than an NRP-1, the user might see the following message on the NRP-1 console and the NRP-1 might reboot:

platform_interface_init: PAM mailbox Config not valid yet, pausing before re-reading

The NRP-1 will then boot correctly. There is no workaround.

CSCds61145

When the atm snoop command is enabled on a Cisco 6400, issuing a shutdown command on the interface which has been configured with the atm snoop command might cause some cells to drop from the interface that is being snooped (that is, being monitored).

For example, if the command atm snoop is enabled on the "atm1/0/0" interface to monitor the "atm1/0/1" interface and the "atm1/0/0"interface is shutdown, some cells might be dropped from interface "atm1/0/1." There is no other workaround than to keep the snooping interface always active.

CSCds73398

When removing the disk from the secondary NSP, the alarm LEDs are activated on that secondary NSP. The LEDs should remain unlit. There is no workaround.

Closed and Resolved Caveats—Release 12.1(4)DB1

This section describes caveats that have been closed and resolved in Cisco IOS Release 12.1(4)DB. This section describes severity 1, 2, and select severity 3 and 4 caveats.

CSCds04747

Connection setup improvements.

This improvement has been included in Cisco IOS Release 12.1(4)DB1.

Closed and Resolved Caveats—Release 12.1(4)DB

This section describes caveats that have been closed and resolved in Cisco IOS Release 12.1(4)DB. This section describes severity 1, 2, and select severity 3 and 4 caveats.

CSCdr88996

During the NRP boot/initialization cycle, memory may be allocated to the Point-to-Point Protocol (PPP) process. This memory may be held onto for a long time, while subsequent system attempts to acquire additional memory fail resulting in messages that indicate that malloc failed.

This behavior occurs due to a lock in an internal communication path between the NRP and the NSP. Messages back up on the NRP and are never transmitted to the NSP. The response of these messages is required to free the memory held by the PPP process.

To detect the locked-up communication path, execute the show buffers command on the NRP. If the section "PAM Mbox Pak buffers" shows a value with more buffers than the maximum allowed and that value is growing, the lock condition has occurred. There is no workaround.

This caveat has been resolved in Cisco IOS Release 12.1(1)DB1.

CSCdr91706 and Cisco IOS HTTP Vulnerability

A defect in multiple releases of Cisco IOS software will cause a Cisco router or switch to halt and reload if the Cisco IOS HTTP service is enabled, browsing to http://router-ip/anytext?/ is attempted, and the enable password is supplied when requested. This defect can be exploited to produce a denial of service (DoS) attack.

The vulnerability, identified as Cisco caveat ID CSCdr91706, affects virtually all mainstream Cisco routers and switches running Cisco IOS software releases 12.0 through 12.1, inclusive. This is not the same defect as CSCdr36952.

The vulnerability has been corrected and Cisco is making fixed releases available for free to replace all affected Cisco IOS releases. Customers are urged to upgrade to releases that are not vulnerable to this defect, as shown in detail below.

This vulnerability can only be exploited if the enable password is known or not set.

You are strongly encouraged to read the complete advisory, which is available at http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml.

This caveat has been resolved in Cisco IOS Release 12.1(4)DB.

Preexisting NSP Hardware Caveats

This section describes possible unexpected behavior by earlier hardware versions of the NSP. To determine your NSP part number (P/N) and hardware version, see the "Determining Your NSP Part Number and Hardware Version" section.

CSCdk47837—NRPs reset when you reload or reset a nonredundant NSP in Slot 0A.

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 nonredundant system using an NSP of P/N 800-03785-03, place the NSP in Slot 0B.

CSCdk55268—After a bus error, the system does not reboot with autoboot enabled.

Affected Part Number:
800-03785-03

Symptom:
The system remains at the ROMMON prompt after a crash instead of rebooting automatically.

Workaround:
To prevent this problem, set the config register boot field to 0x2.

If the workaround does not work, replace the NSP with P/N 800-03785-04 or higher.

CSCdm55885—NSPs might experience dropped cells.

A small percentage of NSPs might experience dropped cells. To determine if your NSP is affected, use the show controllers atm 0/0/0 EXEC command and check the values in the TPE column.

This field counts the number of transmit parity errors and should display all zeros for a good system. If a non-zero value is displayed in the TPE column, replace the NSP with P/N 800-03785-05 or higher.

CSCdm78716—NME cable consolidation feature hardware requirement.

Affected Part Numbers:
800-03785-03 (without Deviation D99-3628), 800-03785-04, 800-03785-05

Symptoms:
The NSP's network management Ethernet (NME) interface might lock up and require a reset with a "shut" and "no shut" sequence or a complete board reset.

The NSP might crash with a "Write Exception," "Bus Exception," or "System Reserved Exception" error message.

Because these symptoms might be caused by other problems, use the following table to determine the likelihood of this particular problem:

NME Cable Consolidation
is Enabled?
System Uses
Redundant NSPs?
Likelihood that CSCdm78716 is the Cause of the Problems

No

No

Not possible—no backplane Ethernet traffic to the NSPs

No

Yes

Possible, but unlikely

Yes

Yes or No

Likely


Workaround:
If you experience this problem, replace your NSP with P/N 800-03785-06 or higher, or with P/N 800-03785-03 with deviation sticker D99-3628 applied.

CSCdr16154—NRP unrecognized card type.

Affected Part Numbers:
800-03785-01, 800-03785-02, 800-03785-03, 800-03785-04, 800-03785-05, 800-03785-06, 800-03785-07

Symptom:
NSP reports unknown cardtype when the chassis is populated primarily with NRPs.

Workaround (use one of the following):

Reduce the number of NRPs in the system

Make sure all the NRPs are P/N 800-03655-09 or higher

Make sure the NSP is P/N 800-03785-08 or higher.

Determining Your NSP Part Number and Hardware Version

To determine the part number and hardware version of the NSP, use one of the following methods with information from Table 5:

If you are holding the board, look at the 800- part number label on the back of the NSP.

If you can only view the faceplate of the NSP, look at the CLEI code label.

Enter the show hardware EXEC command to display the NSP-PC and NSP-SC part numbers and hardware versions.

The following example displays the show hardware command output for an NSP:

Switch# show hardware

6400 named Switch, Date:17:51:21 UTC Thu Mar 9 2000
Feature Card's FPGA Download Version:0

Slot  Ctrlr-Type    Part No.  Rev  Ser No  Mfg Date   RMA No. Hw Vrs  Tst EEP
----- ------------  ---------- -- -------- --------- -------- ------- --- ---
1/0   NRP           73-3082-08 F0 17827878 Feb 02 00 00-00-00   4.255   0   2
2/0   NRP           73-3082-08 F0 17828272 Feb 02 00 00-00-00   4.255   0   2
3/0   NRP           73-3082-08 F0 17800617 Feb 16 00 00-00-00   4.255   0   2
4/0   NRP           73-3082-08 F0 17801802 Feb 22 00 00-00-00   4.255   0   2
5/0   NRP           73-3082-08 F0 17828075 Feb 06 00 00-00-00   4.255   0   2
7/0   NRP           73-3082-08 F0 17800637 Feb 16 00 00-00-00   4.255   0   2
8/0   622SM NLC     73-3868-02 A0 14327690 Oct 15 99 00-00-00   1.0     0   2
0B/FC NSP-PC        73-2996-06 A0 15794042 Mar 05 00 00-00-00   1.1     0   2
0B/PC FC-PFQ        73-2281-04 B0 17803407 Mar 05 00 00-00-00   4.1     0   2
0B/PC NSP-SC        73-2997-06 A0 17826384 Mar 05 00 00-00-00   1.0     0   2

Primary NSP:Slot 0B

DS1201 Backplane EEPROM:
Model  Ver.  Serial  MAC-Address  MAC-Size  RMA  RMA-Number   MFG-Date
------- ---- -------- ------------ --------  ---  ----------  -----------
C6400    2   17900239 000142C04900   128     0    0           Mar 04 2000

Switch#

Note If your show hardware output shows the NSP-PC Part No. as 73-2996-03 and the NSP-SC Part No. as 73-2997-02, you have an NSP on which the part numbers were incorrectly programmed. Use the CLEI code to determine your NSP part number. If you cannot physically see the NSP, assume you have P/N 800-03785-03.


Table 5 NSP Part Numbers and Hardware Versions 

CLEI Code
800- Part Number
NSP-PC
NSP-SC
Part No.
Hw Vrs
Part No.
Hw Vrs

BAC7R2HCAA

800-03785-08

73-2996-06

any

73-2997-08

any

BAC5DD7DAA

800-03785-07

73-2996-06

any

73-2997-07

any

BAC5DDVDAA

800-03785-06

73-2996-06

any

73-2997-06

any

BAC5DDVDAA

800-03785-05

73-2996-05

any

73-2997-05

any

BAC5DD0DAB

800-03785-04

73-2996-05

any

73-2997-04

any

BAC5DD0DAA

800-03785-03
(Deviation D99-3628)
(Deviation D99-3178)

73-2996-04

1.1
(Dev. D99-3628 put
Hw Vrs to 1.1)

73-2997-03

any

800-03785-03
(Deviation D99-3628)

73-2996-04

1.1
(Dev. D99-3628 put
Hw Vrs to 1.1)

73-2997-03

any

800-03785-03
(Deviation D99-3178)

73-2996-04

any

73-2997-03

any

800-03785-03

73-2996-04

any

73-2997-03

any



Note Deviation labels might not be visible. If you cannot verify that your NSP has a particular deviation, assume it does not.


Related Documentation

The following sections describe the documentation available for the Cisco 6400 universal access concentrator. These documents consist of hardware and software installation guides, Cisco IOS configuration guides and command references, system error messages, feature modules, and other documents.

Documentation is available as printed manuals or electronic documents, except for feature modules, which are available online on Cisco.com 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 12.1 and are located on Cisco.com and the Documentation CD-ROM:

Cross-Platform Release Notes 

On Cisco.com at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Cross-Platform Release Notes

On the Documentation CD-ROM at:

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

Product bulletins, field notices, and other release-specific documents on Cisco.com at:

Technical Documents

Caveats for Cisco IOS Release 12.1  and Caveats for Cisco IOS Release 12.1 T

As a supplement to the caveats listed in the "Software Caveats" section in these release notes, see Caveats for Cisco IOS Release 12.1 and Caveats for Cisco IOS Release 12.1 T, which contain caveats applicable to all platforms for all maintenance releases of Release 12.1.

On Cisco.com:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration: Cisco IOS Release 12.1: Release Notes: Caveats

On the Documentation CD-ROM:

Cisco Product Documentation: Cisco IOS Software Configuration: Cisco  IOS Release 12.1: Caveats


Note If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for any release. To reach Bug Navigator II, log in to Cisco.com and click Software Center: Cisco IOS Software: Cisco Bugtool Navigator II. Another option is to go to http://www.cisco.com/support/bugtools.


Platform-Specific Documents

The documents listed in Table 6 are available for the Cisco 6400 UAC on Cisco.com and the Documentation CD-ROM.

To access Cisco 6400 documentation on Cisco.com, follow this path:

Technical Documents: Documentation Home Page: Aggregation Solutions:
Cisco 6400 Universal Access Concentrator

To access Cisco 6400 documentation on the Documentation CD-ROM, follow this path:

Aggregation Solutions: Cisco 6400 Universal Access Concentrator

Table 6 Platform Documents for the Cisco 6400 Universal Access Concentrator 

Document Title
Chapter Topics

Cisco 6400 UAC Hardware Installation Guide

About This Manual
Hardware Description
Preparing for Installation
Installing the Cisco 6400
Troubleshooting
Maintaining the Cisco 6400
System Specifications
Glossary
Configuration Worksheets
Installing the AC-Input Power Shelf and Power Supply

Cisco 6400 UAC Site Planning Guide

About This Guide
Cisco 6400 Overview
Site Planning Considerations
System Specifications
Cabling Specifications
Glossary

Regulatory Compliance and Safety Information for
the Cisco 6400

Overview of the Cisco 6400 Universal Access Concentrator
General Documentation Information
Agency Approvals
Translated Safety Warnings
Cisco.com

Cisco 6400 UAC Software Configuration Guide
and Command Reference

About This Guide
Product Overview and Configuration
Cisco IOS Software Fundamentals
Using the Web Console
Configuring the NSP
Configuring System Features
Configuring the NRP
Configuring Interfaces
Command Reference
MIB Information
Resolving Error Messages
Glossary

Cisco 6400 FRU Installation and Replacement

Tools and Equipment Required
General Safety Precautions and Maintenance Guidelines
Replacing the Front Cover
Powering Down the System
Backing Up the PCMCIA Card
Maintaining the Air Filter
Replacing an NSP Module
Replacing an NRP Module
Installing or Replacing a Half-Height NLC
Replacing a PEM
Replacing the Blower Module and Fans
Verifying Plug-In Module and Component Installation


Feature Modules

Feature modules describe new features supported by Cisco IOS Release 12.1 DB 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 Cisco.com 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 DB

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 DB

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. The Cisco IOS software documentation set is 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 one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and 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 Cisco.com and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.

On Cisco.com at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.1: Configuration Guides and Command References

On the Documentation CD-ROM at:

Cisco IOS Software Configuration: Cisco IOS Release 12.1:
Configuration Guides and Command References

Cisco IOS Release 12.1 Documentation Set Contents

Table 7 lists the contents of the Cisco IOS Release 12.1 software documentation set, which is available in electronic form and in printed form, if ordered.


Note You can find the most current Cisco IOS documentation on Cisco.com and the Documentation CD-ROM. These electronic documents may contain updates and modifications made after the hard-copy documents were printed.


On Cisco.com at:

Technical Documents: Documentation Home Page: Cisco IOS Software Configuration:
Cisco IOS Release 12.1

On the Documentation CD-ROM at:

Cisco IOS Software Configuration: Cisco IOS Release 12.1

Table 7 Cisco IOS Release 12.1 Documentation Set 

Books
Major Topics

Cisco IOS Configuration Fundamentals Configuration Guide

Cisco IOS Configuration Fundamentals Command Reference

Configuration Fundamentals Overview
Cisco IOS User Interfaces
Cisco IOS File Management
Cisco IOS System Management
Cisco IOS User Interfaces Commands
Cisco IOS File Management Commands
Cisco IOS System Management Commands

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

Transparent Bridging
Source-Route Bridging
Token Ring Inter-Switch Link
Remote Source-Route Bridging
DLSw+
Serial Tunnel and Block Serial Tunnel Commands
LLC2 and SDLC Commands
IBM Network Media Translation Commands
SNA Frame Relay Access Support Commands
NCIA Client/Server Commands
Airline Product Set Commands

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 Signaling 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
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 Overview
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

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
Signaling
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
Configuring Passwords and Privileges
Neighbor Router Authentication
Configuring IP Security Options

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
Multiprotocol Label Switching
Multilayer Switching
Multicast Distributed Switching
Virtual LANs
LAN Emulation

Cisco IOS Wide-Area Networking Configuration Guide

Cisco IOS Wide-Area Networking Command Reference

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

Cisco IOS Configuration Master Index

Cisco IOS Command Reference Master Index

Cisco IOS Debug Command Reference

Cisco IOS Dial Services Quick Configuration Guide

Cisco IOS Software System Error Messages

Cisco IOS Configuration Guide Master Index

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)

 



Note The Cisco Management Information Base (MIB) User Quick Reference publication is no longer published. For the latest list of MIBs supported by Cisco, see Cisco Network Management Toolkit on Cisco Connection Online. From Cisco.com, click on the following path: Service & Support: Software Center: Network Mgmt Products: Cisco Network Management Toolkit: Cisco MIB.


Obtaining Documentation

The following sections provide sources for obtaining documentation from Cisco Systems.

World Wide Web

The most current Cisco documentation is available 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 and may be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.

Ordering Documentation

Cisco documentation is available in the following ways:

Registered Cisco Direct Customers can order Cisco Product documentation from the Networking Products MarketPlace:

http://www.cisco.com/cgi-bin/order/order_root.pl

Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store:

http://www.cisco.com/go/subscription

Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, in North America, by calling 800 553-NETS(6387).

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

We appreciate your comments.

Obtaining Technical Assistance

Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain documentation, troubleshooting tips, and sample configurations from online tools. For Cisco.com registered users, additional troubleshooting tools are available from the TAC website.

Cisco.com

Cisco.com 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.

Cisco.com provides a broad range of features and services to help customers and partners streamline business processes and improve productivity. Through Cisco.com, you can find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online technical support, 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 Cisco.com to obtain additional personalized information and services. Registered users can order products, check on the status of an order, access technical support, and view benefits specific to their relationships with Cisco.

To access Cisco.com, go to the following website:

http://www.cisco.com

Technical Assistance Center

The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract.

Contacting TAC by Using the Cisco TAC Website

If you have a priority level 3 (P3) or priority level 4 (P4) problem, contact TAC by going to the TAC website:

http://www.cisco.com/tac

P3 and P4 level problems are defined as follows:

P3—Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue.

P4—You need information or assistance on Cisco product capabilities, product installation, or basic product configuration.

In each of the above cases, use the Cisco TAC website to quickly find answers to your questions.

To register for Cisco.com, go to the following website:

http://www.cisco.com/register/

If you cannot resolve your technical issue by using the TAC online resources, Cisco.com registered users can open a case online by using the TAC Case Open tool at the following website:

http://www.cisco.com/tac/caseopen

Contacting TAC by Telephone

If you have a priority level 1(P1) or priority level 2 (P2) problem, contact TAC by telephone and immediately open a case. To obtain a directory of toll-free numbers for your country, go to the following website:

http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml

P1 and P2 level problems are defined as follows:

P1—Your production network is down, causing a critical impact to business operations if service is not restored quickly. No workaround is available.

P2—Your production network is severely degraded, affecting significant aspects of your business operations. No workaround is available.