Table Of Contents
Release Notes for Cisco XR 12000 Series Router for Cisco IOS XR Software Release 4.0.3
Key Changes from Previous Releases in Cisco IOS XR Release 4.0.3
Determining Your Software Version
New Features in Cisco IOS XR Software Release 4.0.3
New Software Feature on the Cisco XR 12000 Series Router
New Hardware Features on the Cisco XR 12000 Series Router
Minimum Flash Disk Requirements When Upgrading to Release 4.0.3
Caveats Specific to the Cisco XR 12000 Series Router
Upgrading Cisco IOS XR Software
Obtaining Documentation and Submitting a Service Request
Release Notes for Cisco XR 12000 Series Router for Cisco IOS XR Software Release 4.0.3
May 6, 2011
Cisco IOS XR Software Release 4.0.3
Text Part Number OL-24345-01
These release notes describe the features provided in the Cisco IOS XR Software Release 4.0.3 for the Cisco XR 12000 Series Router and are updated as needed.
Note
For information on the Cisco XR 12000 Series Router running Cisco IOS XR Software Release 4.0.3, see the "Important Notes" section.
You can find the most current Cisco IOS XR software documentation at
http://www.cisco.com/en/US/products/ps6342/tsd_products_support_series_home.html
These electronic documents may contain updates and modifications. For more information on obtaining Cisco documentation, see the "Obtaining Documentation and Submitting a Service Request".
For a list of software caveats that apply to Cisco IOS XR Software Release 4.0.3, see the "Caveats" section. The caveats are updated for every release and are described at www.cisco.com.
We recommend that you view the field notices for this release located at the following URL to see if your software or hardware platforms are affected:
http://www.cisco.com/public/support/tac/fn_index.html
Key Changes from Previous Releases in Cisco IOS XR Release 4.0.3
Cisco IOS XR Software Release 4.0.3 requires a 2-GB Flash Disk as a minimum. Therefore, you must upgrade an existing PCMCIA 1-GB Flash Disk to 2 GB or 4 GB before upgrading to Cisco IOS XR Software Release 4.0.3. For more information, see the "Minimum Flash Disk Requirements When Upgrading to Release 4.0.3" section.
Contents
These release notes contain the following sections:
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Introduction
Cisco IOS XR software is a distributed operating system designed for continuous system operation combined with service flexibility and high performance.
Cisco IOS XR software running on the Cisco XR 12000 Series Router provides the following features and benefits:
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For more information about new features provided on the Cisco XR 12000 Series Router for Cisco IOS XR Software Release 4.0.3, see the "New Features in Cisco IOS XR Software Release 4.0.3" section in this document.
System Requirements
This section describes the system requirements for Cisco IOS XR Software Release 4.0.3 supported on the Cisco XR 12000 Series Router. The system requirements include the following information:
To determine the software versions or levels of your current system, see the "Determining Your Software Version" section.
Feature Set Table
Cisco IOS XR software is packaged in feature sets (also called software images). Each feature set contains a specific set of Cisco IOS XR Software Release 4.0.3 features.
Table 1 lists the Cisco IOS XR software feature set matrix (PIE files) and associated filenames available for Cisco IOS XR Software Release 4.0.3, supported on the Cisco XR 12000 Series Router.
Table 1 Cisco XR 12000 Series Router Supported Feature Set (Cisco IOS XR Software
Release 4.0.3 PIE Files)Cisco IOS XR IP Unicast Routing Core Bundle
c12k-mini.pie-4.0.3
Contains the required core packages, including OS, Admin, Base, Forwarding, Routing, SNMP Agent, and Alarm Correlation.
Cisco IOS XR IP Unicast Routing Core Bundle
c12k-mini.vm-4.0.3
Contains the required core packages including OS, Admin, Base, Forwarding, and Routing SNMP Agent, and Alarm Correlation.
Cisco IOS XR Manageability Package
c12k-mgbl.pie-4.0.3
CORBA2 agent, XML Parser, and HTTP server packages.
Cisco IOS XR MPLS Package
c12k-mpls.pie-4.0.3
MPLS-TE,3 LDP, 4 MPLS Forwarding, MPLS OAM,5 LMP,6 OUNI,7 and RSVP.8
Cisco IOS XR Multicast Package
c12k-mcast.pie-4.0.3
Multicast Routing Protocols (PIM,9 MSDP,10 IGMP,11 Auto-RP, BSR12 ), Tools (SAP, MTrace, MRINFO), and Infrastructure (MRIB,13 MURIB,14 MFWD)15 .
Cisco IOS XR Security Package
c12k-k9sec.pie-4.0.3
Support for Encryption, Decryption, IPSec16 , SSH,17 SSL,18 and PKI.19
Software based IPSec support: maximum of 500 tunnelsCisco IOS XR Standby RP Boot Image
mbiprp-rp.vm-4.0.3
Support for booting the Standby RP on a Cisco XR 12000 Series Router.
Cisco IOS XR FPD Package
c12k-fpd.pie-4.0.3
Firmware for shared port adapters (SPA) and for fixed port line cards supported in Cisco IOS XR.
Cisco IOS XR Diagnostic Package
c12k-diags.pie-4.0.3
Diagnostic utilities for Cisco IOS XR routers.
Cisco IOS XR Documentation Package
c12k-doc.pie-4.0.0
.man pages for Cisco IOS XR software on the Cisco XR 12000 Series Router chassis.
1 Packages are installed individually
2 Common Object Request Broker Architecture
3 MPLS Traffic Engineering
4 Label Distribution Protocol
5 Operations, Administration, and Maintenance
6 Link Manager Protocol
7 Optical User Network Interface
8 Resource Reservation Protocol
9 Protocol Independent Multicast
10 Multicast Source Discovery Protocol
11 Internet Group Management Protocol
12 Bootstrap router
13 Multicast Routing Information Base
14 Multicast-Unicast RIB
15 Multicast forwarding
16 IP Security
17 Secure Shell
18 Secure Socket Layer
19 Physical layer interface module
Table 2 lists the Cisco XR 12000 Series Router TAR files.
Memory Requirements
Caution
The minimum memory requirements for a Cisco XR 12000 Series Router running Cisco IOS XR Software Release 4.0.3 consist of the following:
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Hardware Supported
All hardware features are supported on Cisco IOS XR software, subject to the memory requirements specified in the "Memory Requirements" section.
Table 3 lists the supported hardware components on the Cisco XR 12000 Series Router and the minimum required software versions. For more information, see the "Determining Your Software Version" section.
Software Compatibility
Cisco IOS XR Software Release 4.0.3 is compatible with the following Cisco XR 12000 Series Router systems:
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The following chassis are supported for an existing installed base:
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Check the firmware needed by running the show fpd package command in admin mode.
RP/0/8/CPU0:router(admin)#show fpd packageMon May 2 00:39:26.726 PST=============================== ================================================Field Programmable Device Package================================================SW Min Req Min ReqCard Type FPD Description Type Subtype Version SW Ver HW Vers==================== ========================== ==== ======= =========== ======== ========E3-OC12-ATM-4 Mickey FPGA lc fpga2 40971.00 0.0 0.0IOB FPGA lc fpga3 41091.00 0.0 0.0SAF 0 FPGA lc fpga4 45586.00 0.0 0.0Mouse FPGA lc fpga1 40977.00 0.0 0.0------------------------------------------------------------------------------------------E3-OC3-ATM-4 Mickey FPGA lc fpga2 40971.00 0.0 0.0IOB FPGA lc fpga3 41091.00 0.0 0.0SAF 0 FPGA lc fpga4 45586.00 0.0 0.0Mouse FPGA lc fpga1 40977.00 0.0 0.0------------------------------------------------------------------------------------------12000-ServEngCard TREX FPGA lc fpga2 162.45 0.0 0.0TREX FPGA lc fpga1 0.41257 0.0 0.0------------------------------------------------------------------------------------------12000-SIP HABANERO FPGA lc fpga2 240.03 0.0 0.0JALAPENO FPGA lc fpga5 240.13 0.0 0.0JALAPENO FPGA lc fpga5 240.13 0.0 0.0JALAPENO FPGA lc fpga1 255.23 0.0 0.0------------------------------------------------------------------------------------------E3-OC12-CH-1 Shiver FPGA lc fpga1 1.02 0.0 0.0------------------------------------------------------------------------------------------SPA-IPSEC-2G Sequoia spa fpga2 1.01 0.0 1.0Lodi spa fpga1 1.22 0.0 1.0SPA PROM spa rommon 1.01 0.0 1.0------------------------------------------------------------------------------------------SPA-4XT3/E3 SPA E3 Subrate FPGA spa fpga2 1.04 0.0 0.0SPA T3 Subrate FPGA spa fpga3 1.04 0.0 0.0SPA I/O FPGA spa fpga1 1.01 0.0 0.0SPA ROMMON spa rommon 2.12 0.0 0.0------------------------------------------------------------------------------------------SPA-2XT3/E3 SPA E3 Subrate FPGA spa fpga2 1.04 0.0 0.0SPA T3 Subrate FPGA spa fpga3 1.04 0.0 0.0SPA I/O FPGA spa fpga1 1.01 0.0 0.0SPA ROMMON spa rommon 2.12 0.0 0.0------------------------------------------------------------------------------------------SPA-4XCT3/DS0 SPA T3 Subrate FPGA spa fpga2 0.11 0.0 0.100SPA T3 Subrate FPGA spa fpga2 1.04 0.0 0.200SPA I/O FPGA spa fpga1 2.08 0.0 0.100SPA ROMMON spa rommon 2.12 0.0 0.100------------------------------------------------------------------------------------------SPA-2XCT3/DS0 SPA T3 Subrate FPGA spa fpga2 0.11 0.0 0.100SPA T3 Subrate FPGA spa fpga2 1.04 0.0 0.200SPA I/O FPGA spa fpga1 2.08 0.0 0.100SPA ROMMON spa rommon 2.12 0.0 0.100------------------------------------------------------------------------------------------SPA-1XCHSTM1/OC3 SPA T3 Subrate FPGA spa fpga2 1.04 0.0 0.0SPA I/O FPGA spa fpga1 1.08 0.0 0.0SPA ROMMON spa rommon 2.12 0.0 0.0------------------------------------------------------------------------------------------SPA-24CHT1-CE-ATM SPA T3 Subrate FPGA spa fpga2 1.10 0.0 1.0SPA I/O FPGA spa fpga1 2.32 0.0 1.0SPA ROMMON spa rommon 1.03 0.0 1.0------------------------------------------------------------------------------------------SPA-2CHT3-CE-ATM SPA T3 Subrate FPGA spa fpga2 1.10 0.0 1.0SPA I/O FPGA spa fpga1 2.22 0.0 1.0SPA ROMMON spa rommon 1.04 0.0 1.0------------------------------------------------------------------------------------------SPA-IPSEC-2G-2 Sequoia spa fpga2 1.01 0.0 1.0Lodi spa fpga1 1.22 0.0 1.0SPA PROM spa rommon 1.01 0.0 1.0------------------------------------------------------------------------------------------SPA-1XCHOC48/DS3 SPA I/O FPGA spa fpga2 1.00 0.0 0.49SPA I/O FPGA spa fpga3 1.00 0.0 0.52SPA I/O FPGA spa fpga1 1.36 0.0 0.49SPA ROMMON spa rommon 2.02 0.0 0.49------------------------------------------------------------------------------------------SPA-1XCHOC12/DS0 SPA I/O FPGA spa fpga2 1.00 0.0 0.49SPA I/O FPGA spa fpga1 1.36 0.0 0.49SPA ROMMON spa rommon 2.02 0.0 0.49------------------------------------------------------------------------------------------SPA-OC192POS SPA FPGA swv1.2 spa fpga1 1.02 0.0 0.0------------------------------------------------------------------------------------------SPA-8XOC12-POS SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.5------------------------------------------------------------------------------------------SPA-8XCHT1/E1 SPA I/O FPGA spa fpga1 2.08 0.0 0.0SPA ROMMON spa rommon 2.12 0.0 0.140------------------------------------------------------------------------------------------SPA-OC192POS-XFP SPA FPGA swv1.2 spa fpga1 1.02 0.0 0.0SPA FPGA swv1.2 hwv2 spa fpga1 1.02 0.0 2.0------------------------------------------------------------------------------------------SPA-10X1GE SPA FPGA swv1.10 spa fpga1 1.10 0.0 0.0------------------------------------------------------------------------------------------SPA-5X1GE SPA FPGA swv1.10 spa fpga1 1.10 0.0 0.0------------------------------------------------------------------------------------------SPA-2XOC48POS/RPR SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.0------------------------------------------------------------------------------------------SPA-4XOC48POS/RPR SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.0------------------------------------------------------------------------------------------SPA-1XTENGE-XFP SPA FPGA swv1.9 spa fpga1 1.09 0.0 0.0------------------------------------------------------------------------------------------SPA-8X1FE SPA FPGA swv1.1 spa fpga1 1.01 0.0 0.0------------------------------------------------------------------------------------------SPA-1XOC48POS/RPR SPA FPGA swv1.2 spa fpga1 1.02 0.0 0.0------------------------------------------------------------------------------------------SPA-8XOC3-POS SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.5------------------------------------------------------------------------------------------SPA-2XOC12-POS SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.5------------------------------------------------------------------------------------------SPA-4XOC12-POS SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.5------------------------------------------------------------------------------------------SPA-10X1GE-V2 SPA FPGA swv1.10 spa fpga1 1.10 0.0 0.0------------------------------------------------------------------------------------------SPA-8X1GE-V2 SPA FPGA swv1.10 spa fpga1 1.10 0.0 0.0------------------------------------------------------------------------------------------SPA-5X1GE-V2 SPA FPGA swv1.10 spa fpga1 1.10 0.0 0.0------------------------------------------------------------------------------------------SPA-2X1GE-V2 SPA FPGA swv1.1 spa fpga1 1.01 0.0 0.0------------------------------------------------------------------------------------------SPA-1X10GE-L-V2 SPA FPGA swv1.11 spa fpga1 1.11 0.0 0.0------------------------------------------------------------------------------------------SPA-8X1FE-V2 SPA FPGA swv1.1 spa fpga1 1.01 0.0 0.0------------------------------------------------------------------------------------------SPA-4XOC3-POS-V2 SPA FPGA swv1.0 spa fpga1 1.00 0.0 0.5------------------------------------------------------------------------------------------SPA-1XOC3-ATM-V2 TATM SPA IOFPGA spa fpga1 2.02 0.0 0.0------------------------------------------------------------------------------------------SPA-2XOC3-ATM-V2 SPA TATM IOFPGA spa fpga1 2.02 0.0 0.0------------------------------------------------------------------------------------------SPA-3XOC3-ATM-V2 SPA TATM IOFPGA spa fpga1 2.02 0.0 0.0------------------------------------------------------------------------------------------SPA-1XOC12-ATM-V2 SPA TATM IOFPGA spa fpga1 2.02 0.0 0.0------------------------------------------------------------------------------------------Other Firmware Support
The Cisco XR 12000 Series Router supports the following firmware code:
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For Engine 3 line card:
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For Engine 5 line card:
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For Performance Route Processor 2 (PRP-2):
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For Performance Route Processor 3 (PRP-3):
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Minimum Firmware Requirement
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Depending on the type of firmware that needs upgrading the symptoms can vary as follows:
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RMA Card Firmware Upgrade Procedure:
To upgrade the fabric-downloader, ROMMON, Mbus, and current field-programmable device (FPD) image package on a single RMA linecard or on all modules installed in a router, use the upgrade all command in administration EXEC mode.
upgrade all location {node-id | all} [force]
Where location node-id specifies that all ROM images will be upgraded on the physical location of the line card received through RMA defined by the node-id argument. The node-id argument is entered in the rack/slot/module notation.
The upgrade all location all command upgrades all ROM images on all line cards (LCs) that are installed in the router.
For an RMA linecard firmware upgrade you'll want to use the upgrade all location {node-id} command.
The optional force parameter skips the version check and forces an upgrade.
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http://www.cisco.com/web/Cisco_IOS_XR_Software/pdf/XR12000SoftwareFirmwareCompatibilityMatrix.pdf
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http://www.cisco.com/web/Cisco_IOS_XR_Software/index.html
Here's the link to the Cisco Systems IOS XR Firmware Upgrade Guide For CRS-1 and XR12000:
http://www.cisco.com/web/Cisco_IOS_XR_Software/pdf/IOSXRFirmwareUpgradeGuide.pdf
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Requirement of Cisco IOS Image Level and Boot Helper Version for Migration
If you are migrating from Cisco IOS to Cisco IOS XR software on the Cisco XR 12000 Series Router, you must have the following minimum Cisco IOS image level and Boothelper version to support Release 4.0.3:
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If you have an earlier version of this system, you must upgrade to the minimum supported level before performing a migration. Otherwise, your migration fails. For more information, see the Migrating from Cisco IOS to Cisco IOS XR Software on the Cisco XR 12000 Series Router document.
Determining Your Software Version
To determine the version of Cisco IOS XR software running on your router, log into the router and enter the show version command:
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RP/0/4/CPU0:router#show versionThu May 5 20:23:40.522 PSTCisco IOS XR Software, Version 4.0.3[Default]Copyright (c) 2011 by Cisco Systems, Inc.ROM: System Bootstrap, Version 12.00(20071023:043238) [sunnaik-rommon_hang 1.20] RELEASE SOFTWARECopyright (c) 1994-2007 by cisco Systems, Inc.PE1 uptime is 1 day, 23 hours, 6 minutesSystem image file is "disk0:c12k-os-mbi-4.0.3/mbiprp-rp.vm"cisco 12416/PRP (7457) processor with 3670016K bytes of memory.7457 processor at 1266Mhz, Revision 1.1Cisco 12416 320 Gbps2 Cisco 12000 Series Performance Route Processors1 Cisco 12000 4-Port ISE ATM Over SONET OC3/STM-1 Controller (4 ATM)5 Cisco 12000 Series SPA Interface Processor-601/501/4012 Cisco 12000 Series - Multi-Service Blade Controllers1 1 Port ISE Packet Over SONET OC-48c/STM-16 Controller (1 POS)1 4 Port ISE Packet Over SONET OC-12c/STM-4 Controller (4 POS)2 Cisco 12000 4 Port Gigabit Ethernet Controllers (8 GigabitEthernet)1 1 port ISE OC48 channelized STS-12c/STM-4, STS-3c/STM-1 or DS3/E3 Controller (1 SONET)1 4 port ISE OC12 channelized STS-3c/STM-1 or DS3/E3 Controller (4 SONET)6 Management Ethernet22 PLIM_QOS13 GigabitEthernet/IEEE 802.3 interface(s)3 MgmtMultilink30 T315 Multilink network interface(s)392 T11604 Serial network interface(s)23 SONET/SDH9 Packet over SONET/SDH7 Asynchronous Transfer Mode8 FastEthernet1 Serial network interface(s)1018k bytes of non-volatile configuration memory.2053376k bytes of disk0: (Sector size 512 bytes).62708k bytes of disk1: (Sector size 512 bytes).65536k bytes of Flash internal SIMM (Sector size 256k).Configuration register on node 0/0/CPU0 is 0x102Boot device on node 0/0/CPU0 is disk0:Package active on node 0/0/CPU0:c12k-fwding, V 4.0.3[00], Cisco Systems, at disk0:c12k-fwding-4.0.3Built on Fri Apr 29 04:32:13 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mpls, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mpls-4.0.3Built on Fri Apr 29 04:25:07 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mgbl, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mgbl-4.0.3Built on Fri Apr 29 04:25:31 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mcast, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mcast-4.0.3Built on Fri Apr 29 04:25:15 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-routing, V 4.0.3[00], Cisco Systems, at disk0:iosxr-routing-4.0.3Built on Fri Apr 29 04:28:35 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-infra, V 4.0.3[00], Cisco Systems, at disk0:iosxr-infra-4.0.3Built on Fri Apr 29 04:25:50 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-fwding, V 4.0.3[00], Cisco Systems, at disk0:iosxr-fwding-4.0.3Built on Fri Apr 29 04:27:18 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-diags, V 4.0.3[00], Cisco Systems, at disk0:iosxr-diags-4.0.3Built on Fri Apr 29 04:28:46 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-fpd-supp, V 4.0.3[00], Cisco Systems, at disk0:c12k-fpd-supp-4.0.3Built on Fri Apr 29 05:03:43 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-diags, V 4.0.3[00], Cisco Systems, at disk0:c12k-diags-4.0.3Built on Fri Apr 29 04:47:58 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-mgbl-supp, V 4.0.3[00], Cisco Systems, at disk0:c12k-mgbl-supp-4.0.3Built on Fri Apr 29 04:25:36 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-mcast-supp, V 4.0.3[00], Cisco Systems, at disk0:c12k-mcast-supp-4.0.3Built on Fri Apr 29 04:25:26 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-base, V 4.0.3[00], Cisco Systems, at disk0:c12k-base-4.0.3Built on Fri Apr 29 04:32:01 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-os-mbi, V 4.0.3[00], Cisco Systems, at disk0:c12k-os-mbi-4.0.3Built on Fri Apr 29 04:31:53 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieBoot device on node 0/1/CPU0 is mem:Package active on node 0/1/CPU0:c12k-fwding, V 4.0.3[00], Cisco Systems, at disk0:c12k-fwding-4.0.3Built on Fri Apr 29 04:32:13 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mpls, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mpls-4.0.3Built on Fri Apr 29 04:25:07 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mcast, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mcast-4.0.3Built on Fri Apr 29 04:25:15 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-routing, V 4.0.3[00], Cisco Systems, at disk0:iosxr-routing-4.0.3iosxr-routing, V 4.0.3[00], Cisco Systems, at disk0:iosxr-routing-4.0.3Built on Fri Apr 29 04:28:35 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-infra, V 4.0.3[00], Cisco Systems, at disk0:iosxr-infra-4.0.3Built on Fri Apr 29 04:25:50 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-fwding, V 4.0.3[00], Cisco Systems, at disk0:iosxr-fwding-4.0.3Built on Fri Apr 29 04:27:18 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-diags, V 4.0.3[00], Cisco Systems, at disk0:iosxr-diags-4.0.3Built on Fri Apr 29 04:28:46 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-fpd-supp, V 4.0.3[00], Cisco Systems, at disk0:c12k-fpd-supp-4.0.3Built on Fri Apr 29 05:03:43 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-diags, V 4.0.3[00], Cisco Systems, at disk0:c12k-diags-4.0.3Built on Fri Apr 29 04:47:58 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-mcast-supp, V 4.0.3[00], Cisco Systems, at disk0:c12k-mcast-supp-4.0.3Built on Fri Apr 29 04:25:26 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-base, V 4.0.3[00], Cisco Systems, at disk0:c12k-base-4.0.3Built on Fri Apr 29 04:32:01 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for piec12k-os-mbi, V 4.0.3[00], Cisco Systems, at disk0:c12k-os-mbi-4.0.3Built on Fri Apr 29 04:31:53 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieBoot device on node 0/2/CPU0 is mem:Package active on node 0/2/CPU0:c12k-fwding, V 4.0.3[00], Cisco Systems, at disk0:c12k-fwding-4.0.3Built on Fri Apr 29 04:32:13 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mpls, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mpls-4.0.3Built on Fri Apr 29 04:25:07 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-mcast, V 4.0.3[00], Cisco Systems, at disk0:iosxr-mcast-4.0.3Built on Fri Apr 29 04:25:15 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pieiosxr-routing, V 4.0.3[00], Cisco Systems, at disk0:iosxr-routing-4.0.3Built on Fri Apr 29 04:28:35 PST 2011By sjc-lds-834 in /auto/srcarchive5/production/4.0.3/c12k/workspace for pie
New Features in Cisco IOS XR Software Release 4.0.3
The following sections contain information on new features and enhancements in Cisco IOS XR Software Release 4.0.3:
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New Software Feature on the Cisco XR 12000 Series Router
Cisco IOS XR Software Release 4.0.3 adds support for Traffic Engineering over ATM on the Cisco XR 12000 Series Router platform. This feature is supported on the ATM subinterfaces of the following line cards and SPAs:
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BFD is not supported for this feature.
For more information about MPLS-TE, refer to the Implementing MPLS Traffic Engineering section of the Cisco IOS XR MPLS Configuration Guide for the Cisco XR 12000 Series Router, Release 4.0.
New Hardware Features on the Cisco XR 12000 Series Router
No new hardware was introduced on the Cisco XR 12000 Series Router in Cisco IOS XR Software Release 4.0.3.
For detailed information on the shared port adapters (SPAs) and SPA interface processors (SIPs), see the following documents:
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Important Notes
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Configuration prior to Cisco IOS XR Software Release 3.6.0:
Policy-map wred_exampleClass class-defaultrandom-detect exp 0 384 packets 484 packetsrandom-detect exp 1 384 packets 484 packetsrandom-detect exp 2 384 packets 484 packetsrandom-detect exp 3 484 packets 584 packetsrandom-detect exp 4 484 packets 584 packetsrandom-detect discard-class 0 384 packets 484 packetsrandom-detect discard-class 1 384 packets 484 packetsrandom-detect discard-class 2 484 packets 584 packetsbandwidth remaining percent 20Cisco IOS XR Software Release 3.6.0 and later releases:
policy-map wred_exampleclass class-defaultrandom-detect exp 0,1,2 384 packets 484 packetsrandom-detect exp 3,4 484 packets 584 packetsrandom-detect discard-class 0,1 384 packets 484 packetsrandom-detect discard-class 2 484 packets 584 packetsbandwidth remaining percent 20!end-policy-map!endIn Cisco IOS XR Software Release 3.6.0 and later releases, the implicitly assigned QoS class class-default must have at least 1 percent bandwidth made available to it. This can be done either by assigning at least 1 percent explicitly (bandwidth remaining percent 1) or by ensuring that the total bandwidth assigned to all other classes in the policy is a maximum of 99 percent, leaving 1 percent available for the class-default. A QoS policy that does not have any bandwidth for class-default is rejected when upgrading to Cisco IOS XR Software Release 3.6.0 or later releases.
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RP/0/0/CPU0:router# adminRP/0/0/CPU0:router# show environment power-supply table48V CurrentR/S/I Module (V) (A)0/24/* PEM1 54 4PEM2 53 40/25/* PEM1 54 4PEM2 53 4Total Power Supplies: 3200WRedundant Power Supplies: 1600WWorst Case Power Used: 621WCurrent Power Used: 428WCurrent Redundant Power Available: 1172WCurrent Total Power Available: 2772WWorst Case Redundant Power Available: 979WWorst Case Total Power Available: 2579WPID Description Watts--- ----------- -----GRP-B Route Processor 38PRP-1 Cisco 12000 Series Performance Route Processor 60LC-4OC-3-POS-SM 4 Port Packet Over SONET OC-3c/STM-1 804OC3X/POS-MM-MJ-B 4 port ISE OC3 90If you plan to insert a new card, locate the entry for the card to be inserted and note the power consumed by it. If this power is less than the figure given in Worst Case Redundant Power Available (the figure is displayed in the show environment power-supply table command output), the card can be safely inserted. As long as the Worst Case Redundant Power Available is not zero, a PEM can be powered down for replacement without impact.
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There is no direct workaround for this issue as its a hardware limitation. Only way to recover from this issue is to reduce feature scale. You need to identify the features which use LUREG at PreCAM1 and remove one or more of the features depending on LUREG requirements of the feature being added.
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A CLI is provided to override this Cisco IOS XR Software Release 4.0.2 default behavior and go back to pre Cisco IOS XR Software Release 4.0.2 behavior such that RSVP neither computes/sets the RSVP checksum on outgoing RSVP messages, nor verifies the checksum on received RSVP messages. The command to execute to revert to the pre-Cisco IOS XR Software Release 4.0.2 behavior is:
Router(config)#rsvp signalling checksum disable
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Minimum Flash Disk Requirements When Upgrading to Release 4.0.3
Cisco IOS XR Software Release 4.0.3 requires a 2-GB Flash Disk as a minimum. If your Cisco XR 12000 Series Router currently uses a 1-GB Flash Disk, you must upgrade it to 2-GB before upgrading to Cisco IOS XR Software Release 4.0.3. The PCMCIA 1-GB Flash Disk was the default size for the Cisco XR 12000 Series Router running Cisco IOS XR Software Release 3.6 and earlier.
In Cisco IOS XR Software Release 3.6 and later releases, disk partitioning is supported. Partitioning of a 2-GB disk is possible but not required. Partitioning of a 4-GB disk is required.
A 4-GB Flash Disk can be installed instead of the 2-GB for greater disk storage.
To upgrade from a 1-GB flash disk to a 2-GB or greater flash disk, refer to the Flash Disk Upgrade Tasks link on the following Cisco XR 12000 Series Router Installation and Upgrade URL:
http://www.cisco.com/en/US/products/ps6342/prod_installation_guides_list.html
Caveats
Caveats describe unexpected behavior in Cisco IOS XR software releases. Severity-1 caveats are the most serious caveats; severity-2 caveats are less serious.
This section contains caveats that are generic to the Cisco IOS XR Release 4.0.3 software and those specific to the Cisco XR 12000 Series Router.
Cisco IOS XR Caveats
The following open caveats apply to Cisco IOS XR Software Release 4.0.2 and are not platform specific:
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Basic Description:
Show mrib route does not show proper "Flag" output for ExtranetV6
Symptom:
Flag field is incorrect in "show mrib route".
Conditions:
When you have IPv6 MVPN enabled.
Workaround:
There is no work around. It is a show command issue.
Further Problem Description:
None.
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Basic Description:
SONET_SDH XML does not bind to correct path for history stats
Symptom:
'PM get path data failed : Invalid argument ' message will be displayed on the console
Conditions:
This symptom is observed when querying the SONET_SDH XML schema.
Workaround:
None.
Recovery:
None.
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Basic Description:
Bundle Member MAC address should not be changed.
Symptom:
Connectivity Fault Management (CFM) symptoms: CFM peers detect a new peer maintenance endpoint (MEP) with a different MAC address when a member interface is added/removed to a bundle. The old peer using the previous MAC address remains in the database for a period of time before timing out (100 minutes by default).
Cisco Discovery Protocol (CDP) symptoms: If CDP is running on a physical interface that is added or removed from a Bundle-Ether interface, then a peer device reports two CDP neighbors on the same interface for a short period of time until the old entry times out (normally around three minutes).
Conditions:
This issue occurs when running CDP or CFM on a physical interface that is added to or removed from a Bundle-Ether interface.
Workaround:
No workaround is required for CDP. No workaround is available for CFM.
Recovery:
The stale CDP neighbor entry automatically timeouts after less than five minutes and is removed from the CDP neighbor database. This is accompanied by a syslog message like the following example:
cdp[120]: %L2-CDP-6-DELETED_NEIGHBOR : CDP Neighbour foobar on interface GigabitEthernet0/1/0/1 has been deleted, remote interface GigabitEthernet0/1/0/2The stale CFM entry normally timeouts after about 100 minutes. The CLI command clear ethernet cfm peer meps can also be used to clear the CFM MEP table.
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Further Problem Description:
This problem is caused because CDP and CFM are using the interface MAC address to identify the peer. When a physical interface is added to a bundle, the MAC address of the physical interface is changed to that of the bundle interface. When a physical interface is removed from a bundle, then the MAC address is reverted back to the BIA MAC address associated with the physical interface.
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Basic Description:
Slow CLI response during multiple VTY connections.
Symptom:
In Cisco IOS XR software if the telnet or ssh access frequency is very high, the CLI response performance may decrease significantly. The CPU load increases to more than 90% with the top consumer processes of sysdb_svr_local, sysdb_shared_nc, and sysdb_mc. Eventually telnet and ssh access is not possible any more.
Conditions:
This issue occurs with fast consecutive and lasting telnet or ssh login attempts and multiple logins per minute over a long period of time.
Workaround:
Do not use more than three telnet or ssh login attempts per minute continuously over a lasting period of time.
Recovery:
Reduce the frequency of telnet or ssh logins.
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Basic Description:
"snmpd[1101]: t11 Failed process trap" flooding the console.
Symptom:
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Conditions:
This was seen with "logging trap debug" and "snmp-server traps syslog" configured while a high rate debugs are enabled. This is likely with the above configuration when enabling of "debug snmp trap" as it creates a feedback loop resulting in exponential growth in the rate of syslog traps.
Workaround:
Change any "logging trap debug" configuration to have syslogs of higher severity generated as traps, for example 'logging trap informational' or 'logging trap warning'. It is not recommended to use the configuration 'logging trap debug' as that causes EVERY syslog, including debugs, to be generated as SNMP traps via the CISCO-SYSLOG-MIB. This causes a trap storm.
Recovery:
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Basic Description:
BGP IAS functionality now requires explicit next-hop-self config.
Symptom:
BGP IAS functionality has changed since Cisco IOS XR Release 3.9.x.
Conditions:
End-to-end connectivity for IAS failed due to the removal of implicit next-hop-self configuration.
Workaround:
Explicitly configure next-hop-self.
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Basic Description:
IPv6 BGP session flapping due to RX path issue.
Symptom:
Few IPv6 BGP sessions configured with <= (15/45) timer might flap during RP FO when configured with NSR.
Conditions:
This issue might occur if the following conditions are met:
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Workaround:
No workaround required. Those sessions come up.
Recovery:
Recovery occurs automatically.
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Basic Description:
cefcModuleOperStatus showing wrong value for SPA-5X1GE in Cisco XR 12000 Series Router XR Release 4.0.0.
Symptom:
On a Cisco router running IOS-XR the value of mib cefcModuleOperStatus changes to 5 during line card reload. A value of 5 is wrong. It should be 2. If a LC with a modular PLIM (SIP) is reloaded, the cefcModuleOperStatus MIB value for the SPAs remains 2. This complies to status "OK" and the card down alarm/ link down service alarms are not generated for the SPAs on the management station.
Conditions:
The problem is only seen during reload of line card.
Workaround:
No workaround is available.
Recovery:
It is a transient issue and recovers automatically when the line card reload is completed.
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Basic Description:
ARP is not resolved due to ARP not process FIB API return correctly.
Symptom:
ARP entries are not always getting resolved on the second link of parallel links when using proxy ARP, potentially leading to traffic loss.
Conditions:
This issue occurs in Cisco IOS XR releases between 4.0.1 and 4.0.3 using static directed routes and proxy ARP to resolve ARP entries on the second link of parallel links.
Workaround:
None.
Recovery:
None.
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Basic Description:
Not able to unconfigure LPTS configs.
Symptom:
In Cisco IOS-XR release, de-configuring a location-specific lpts pifib hardware policer fails. Committing the "no" form of the user mode config command, lpts pifib hardware police location <loc> flow <flow type> rate, fails.
The user may observe the following on the failure.
RP/0/RP0/CPU0:my-router(config)#no lpts pifib hardware police location 0/1/CPU0RP/0/RP0/CPU0:my-router(config)#commit% Failed to commit one or more configuration items during a pseudo-atomicoperation. All changes made have been reverted. Please issue 'showconfiguration failed' from this session to view the errorsRP/0/RP0/CPU0:my-router(config)#show config failed errors!! SEMANTIC ERRORS: This configuration was rejected by!! the system due to semantic errors. The individual!! errors with each failed configuration command can be!! found below.lpts pifib hardware police location 0/1/CPU0no flow bgp default rate 30000!!% 'sysdb' detected the 'warning' condition 'An invalid argument was passedto a SysDB function (maybe a NULL pointer?)'!endConditions:
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no lpts pifib hardware police location <loc> flow <flow type> rate
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(config)#lpts pifib hardware police location <loc> flow <flow type> rate <value>(config)#commit(config)#commit replaceDe-configuring a global "lpts pifib hardware police flow" does not lead to a failure.
The problem is not present in Cisco IOS-XR releases prior to Cisco IOS XR Release 4.0.2.
Workaround:
Not available.
Recovery:
Manually configure the location specific "lpts pifib hardware police flow rate" to its default. The default policer rate can be obtained with the following CLI command:
show lpts pifib hardware police location R/S/CPU0
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Basic Description:
Dumper not honoring "exception choice" config during process crash.
Symptom:
In Cisco IOS XR the core file of a process crash is not stored in the directory specified in the "exception choice" configuration.
Conditions:
A user configured "exception choice" like the following example to store core files in the non-default directory on harddisk in IOS-XR:
exception choice 1 compress on filepath harddisk:/foobarThe core file of a process crash might be written to harddisk:/dumper instead to harddisk:/foobar. The problem is not present in IOS-XR releases prior to Cisco IOS XR Release 4.0.2.
Workaround:
Use the default configuration for writing core files.
Recovery:
The core file is not getting lost after a process crash. It is written to the default directory "dumper" on harddisk.
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Basic Description:
Fabric plane mcast down after rack reload on Cisco CRS Multishelf.
Symptom:
On a Cisco CRS Multishelf system, the "Oper State" of a fabric plane might be "MCAST_DOWN" after a Line Card Chassis (LCC) reload.
Conditions:
An LCC is reloaded on a CRS Multishelf system. The problem is not consistently reproducible.
Workaround:
None available.
Recovery:
Shut/no shut down the affected fabric plane in admin config mode.
See the following example:
(admin-config)#controllers fabric plane 2 shutdown(admin-config)#commit(admin-config)#no controllers fabric plane 2 shutdown(admin-config)#commit•
Basic Description:
Harddisk Disk Mirroring failed after rack OIR.
Symptom:
On a Cisco CRS-1 or Cisco CRS-3, harddisk mirroring may fail sync with resource busy error after RP reload.
Conditions:
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The problem also applies to Cisco IOS XR Release 4.0.1.
Workaround:
None available.
Recovery:
Disable harddisk mirroring in admin config mode.
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Basic Description:
System running into low memory conditions.
Symptom:
Install activate/deactivate fails with wdsysmon messages on memory shortage.
Conditions:
This issue occurs when the system has many active pies/SMUs, and the system overall is slow on free memory.
Workaround:
Free up system memory by disabling or removing the feature or configuration such as BGP, etc.
Recovery:
Install should fail before PONR, and no manual recovery is needed.
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Basic Description:
S16: mibd_interfaces crash while polling cIpMRouteNextHopTabl.e
Symptom:
In Cisco IOS-XR a crash of process mibd_interface might be observed when the mroute mib is polled.
Conditions:
Multicast is configured. The OID cIpMRouteNextHopTable of mroute mib is polled.
Workaround:
Not available.
Recovery:
The process is restarted automatically.
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Basic Description:
GSP crashed when demote/promote message is in a node out-of-order queue.
Symptom:
GSP process crashes. The crash is accompanied by the following syslog message:
LC/0/1/CPU0:Mar 24 10:26:25.012 PST: gsp[186]: %OS-DISTRIB_LIB-3-GSP_TRACE_BACK : gs_mem_release_internal : first attempt to free non pool memory 0x501ffa20 : pkg/bin/gsp : (PID=151620) : -Traceback= 4c87a8e8 40014f58 4002ce38 4003b2a8 4003b9e0 4c2b23c4Conditions:
GSP control messages arrived at one node out of order. This could happen because of the GSP control traffic burst originating from multiple nodes in the system. This condition might occur during router boot up or simultaneous process restart.
Workaround:
Not available.
Recovery:
The GSP process is restarted automatically.
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Basic Description:
Stale entries seen in show pim ipv4 rpf output even after commit replace.
Symptom:
In Cisco IOS-XR, stale entries are seen in the output of the CLI command, show pim ipv4 rpf'.
Conditions:
This issue occurs under the following conditions:
One or more RP addresses are learned through Auto-RP.
The VRF's multicast configuration is removed.
Workaround:
Not applicable.
Recovery:
Restart the PIM process.
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Basic Description:
EDM request Timeouts from online_diag_lc for Cisco CRS-3 LCs in steady state.
Symptom:
In Cisco IOS-XR, SYSDB-SYSDB-6-TIMEOUT_EDM syslog messages might be displayed steadily.
Conditions:
A syslog message like the following example might be displayed steadily:
RP/0/RP0/CPU0:Mar 29 10:20:05.152 : sysdb_svr_admin[346]: %SYSDB-SYSDB-6-TIMEOUT_EDM : EDM request for 'admin/oper/fabric/rack/2/lport/s1tx/' from 'online_diag_lc' (jid 227, node 2/3/CPU0). No response from 'fsdb_server' (jid 211, node 2/RP1/CPU0) within the timeout period (100 seconds).It indicates that certain EDM requests are rejected by the sysdb. The reason is that the sysdb is not able to allocate memory for replies because of memory fragmentation. The probability of hitting this problem is low.
Workaround:
Not available.
Recovery:
Restart the sysdb_svr_admin process: process restart sysdb_svr_admin
Caveats Specific to the Cisco XR 12000 Series Router
The following open caveats are specific to the Cisco XR 12000 Series Router:
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Basic Description:
E3 ATM: atm interface stays down after config restore
Symptom:
On Cisco XR12K an Engine3 ATM interface remains down after config has been restored
Conditions:
The ATM interfaces of an Engine 3 ATM LC are shut down and the config is restored, few ATM interfaces might remain down.
Workaround:
no shut the ATM interfaces before the config is restored.
Recovery:
Perform shut/no shut on the affected ATM main interface.
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Basic Description:
XR fdiags TFIA To FFIA Fabric Pkt Test fails on 12404E chassis
Symptom:
XR fdiags TFIA To FFIA Fabric Pkt Test fails on 12404E chassis
Conditions:
No service impact.
Workaround:
None.
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Basic Description:
SPA crashing when both OAM and normal traffic sent over cell packing.
Symptom:
When cell packing is enabled on the ceop ATM subinterface and both normal as well as OAM traffic is sent, the SPA crashes with following errors:
RP/0/1/CPU0:TB2PE2#LC/0/6/CPU0:Dec 18 06:07:00.373 : g_spa_0[162]: %L2-SPA_PLIM_SB-3-SPA_FW_ERR : SPA-2CHT3-CE-ATM[0] (CEMA_INT-2-FATAL_INTERRUPT: Fatal Winpath Packet Bus Error interrupt: Bus Error: 8-byte read from 0x00000000 generated by WMM TRS: 3 pc:0x011e data: r108 address: r57)LC/0/6/CPU0:Dec 18 06:07:00.415 : g_spa_0[162]: %L2-SPA_PLIM_SB-3-SW_ERROR : SPA-2CHT3-CE-ATM[0]: Resetting the SPA due to a SPA fatal error : pkg/bin/g_spa_0 : (PID=163939) : -Traceback= 79c7d3ec 79b80f98 79ad52f4 7824b074 7824bdf4 78249e78 79ad2a88 782cf31cLC/0/6/CPU0:Dec 18 06:07:02.722 : g_spa_0[162]: %L2-CEMA-4-GEN_ERR : CEMA Internal Error: spa_cema_atm_get_ima_info: invalid atm_port info in CEMA Intfc for ifh: 0x7005100 : pkg/bin/g_spa_0 : (PID=163939) : -Traceback= 79cb8920 79cc1e8c 78039c24 7804c93c 7805d37c 7806d25c 780721f8 7824dbd4 7824e6a4 78249e9c 78054078 782cf31cLC/0/6/CPU0:Dec 18 06:07:02.724 : g_spa_0[162]: %L2-GATM-2-ERR : gatm_mainif_get_stg_state - 523: Could not find aggregation status forifhandleConditions:
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Workaround:
Use OAM config based on OAM traffic it can process.
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Basic Description:
VPLS multicasting is not happening if IPHC configured on core-facing LC.
Symptom:
VPLS multicast does not function appropriately.
Conditions:
This is observed on a Cisco XR 12000 Series Router with IPHC configured on the same line card slot on which a VPLS core facing interface is present.
Workaround:
None. Do not configure IPHC on the same slot with a core facing SPA.
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Basic Description:
set/match mpls exp not working on L2qos on CEOP with PBTS.
Symptom:
If PBTS is enabled on the core facing interface and there is an input service policy on the edge-facing interface to set the mpls exp value, then the exp does not get set.
Conditions:
The conditions under which this issue occurs are as follows:
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2.
Workaround:
None.
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Basic Description:
Enabling LFI on Multilink IPV6 traffic stops flowing and ping fails.
Symptom:
IPV6 traffic drops and ping stops working.
Conditions:
This condition was observed on CHOC12 SPA while enabling and disabling Interleave on Multilink interface with a T1 member interface.
Workaround:
Shut and no shut the interface.
Recovery:
Reload the SPA.
Upgrading Cisco IOS XR Software
Cisco IOS XR software is installed and activated from modular packages, allowing specific features or software patches to be installed, upgraded, or downgraded without affecting unrelated processes. Software packages can be upgraded or downgraded on all supported card types, or on a single card (node).
Software packages are installed from package installation envelope (PIE) files that contain one or more software components.
The following URL contains links to information about how to upgrade Cisco IOS XR software:
http://www.cisco.com/web/Cisco_IOS_XR_Software/index.html
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Troubleshooting
For information on troubleshooting Cisco IOS XR software, refer to the Cisco IOS XR Troubleshooting Guide for the Cisco XR 12000 Series Router and the Cisco IOS XR Getting Started Guide for the Cisco XR 12000 Series Router.
Related Documentation
The most current Cisco XR 12000 Series Router hardware documentation is located at the following URL:
http://www.cisco.com/en/US/products/ps6342/prod_installation_guides_list.html
The Cisco IOS XR software documentation set includes the Cisco IOS XR software configuration guides and command references, as well as a getting started guide.
The most current Cisco XR 12000 Series Router software documentation is located at the following URL:
http://www.cisco.com/en/US/products/ps6342/tsd_products_support_series_home.html
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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