Table Of Contents
Release Notes for Cisco IOS XR Software Release 3.6.1
Determining the Software Version
New Software Enhancement in Cisco IOS XR Release 3.6.1
New Software Features in Cisco IOS XR Software Release 3.6.1
New Hardware Features Supported in Cisco IOS XR
Cisco CRS-1 and Cisco XR 12000 Series Router Caveats
Caveats Specific to the Cisco CRS-1 Router
Caveats Specific to the Cisco XR 12000 Series Router
Upgrading Cisco IOS XR Software
Obtaining Documentation, Obtaining Support, and Security Guidelines
Release Notes for Cisco IOS XR Software Release 3.6.1
May 23, 2008
Cisco IOS XR Software Release 3.6.1
Text Part Number OL-16440-01
Note
For information about Cisco IOS XR Software Release 3.6.1, see "Important Notes" section.
Note
These release notes describe the features provided in the Cisco IOS XR Software Release 3.6.1 and are updated as needed.
For a list of software caveats that apply to Cisco IOS XR Software Release 3.6.1, see the "Caveats" section. The caveats are updated for every release and are located on the World Wide Web at www.cisco.com.
We recommend that you view the field notices for this release to see if your software or hardware platforms are affected at http://www.cisco.com/public/support/tac/fn_index.html.
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 provides the following features and benefits:
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For more information about new features provided on various platforms for Cisco IOS XR Software Release 3.6.1, see the "New Features and Enhancements" section in this document.
System Requirements
Cisco IOS XR Software Release 3.6.1 supports the following platforms:
To determine the software versions or levels of your current system, see the "Determining the Software Version" section.
Cisco CRS-1
This section describes the system requirements for Cisco IOS XR Software Release 3.6.1 supported on Cisco CRS-1 routers. The system requirements include the following information:
To determine the software versions or levels of your current system, see Determining the Software Version.
Feature Set Table
The 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 3.6.1 features. Table 1 lists the Cisco IOS XR software feature set matrix (PIE files) and associated filenames available for the Cisco IOS XR Software Release 3.6.1 supported on the Cisco CRS-1 router.
Table 1 Cisco CRS-1 Supported Feature Sets (Cisco IOS XR Software Release 3.6.1 PIE Files)
Cisco IOS XR IP Unicast Routing Core Bundle
comp-hfr-mini.pie-3.6.1
Contains the required core packages including OS, Admin, Base, Forwarding, and Routing SNMP Agent, and Alarm Correlation.
Cisco IOS XR IP Unicast Routing Core Bundle
comp-hfr-mini.vm-3.6.1
Contains the required core packages including OS, Admin, Base, Forwarding, and Routing SNMP Agent, and Alarm Correlation.
Cisco IOS XR Manageability Package
hfr-mgbl-p.pie-3.6.1
Cisco IOS XR MPLS Package
hfr-mpls-p.pie-3.6.1
MPLS-TE,4 LDP,5 MPLS Forwarding, MPLS OAM,6 LMP,7 OUNI,8 RSVP,9 and Layer-2 VPN and Layer-3 VPN.
Cisco IOS XR Multicast Package
hfr-mcast-p.pie-3.6.1
Multicast Routing Protocols (PIM, MSDP,10 IGMP,11 Auto-RP), Tools (SAP, MTrace), and Infrastructure (MRIB,12 MURIB13 , MFWD14 ), and BIDIR-PIM.15
Cisco IOS XR Security Package
hfr-k9sec-p.pie-3.6.1
Support for Encryption, Decryption, IPSec,16 SSH,17 SSL,18 and PKI19 (Software based IPSec support - maximum of 500 tunnels).
Cisco IOS XR Documentation Package
hfr-doc.pie-3.6.1
Man pages for Cisco IOS XR CLI commands
Cisco IOS XR FPD Package
hfr-fpd.pie-3.6.1
Firmware for Fixed PLIM20 and SPA21 modules as well as ROMMON22 images for CRS chassis.
Cisco IOS XR Diagnostic Package
hfr-diags-p.pie-3.6.1
Diagnostic utilities for Cisco IOS XR routers.
Cisco IOS XR Session Border Controller Package
hfr-sbc-p.pie-3.6.1
Session Border Controller package for Cisco CRS-1 routers.
1 Packages are installed individually
2 Common Object Request Broker Architecture
3 Extensible Markup Language
4 MPLS Traffic Engineering
5 Label Distribution Protocol
6 Operations, Administration, and Maintenance
7 Link Manager Protocol
8 Optical User Network Interface
9 Resource Reservation Protocol
10 Multicast Source Discovery Protocol
11 Internet Group Management Protocol
12 Multicast Routing Information Base
13 Multicast-Unicast RIB
14 Multicast forwarding
15 Bidirectional Protocol Independent Multicast
16 IP Security
17 Secure Shell
18 Secure Socket Layer
19 Public-key infrastructure
20 Physical layer interface module
21 Shared port adapters
22 ROM monitor
Table 2 lists Cisco CRS-1 TAR files.
Memory Requirements
Caution
The minimum memory requirements for Cisco CRS-1 routers running Cisco IOS XR Software Release 3.6.1 consist of the following:
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Hardware Supported
Cisco IOS XR Software Release 3.6.1 supports Cisco CRS-1 routers. 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 CRS-1 and the minimum required software versions. For more information, see the "Firmware Support" section.
Software Compatibility
Cisco IOS XR Software Release 3.6.1 is compatible with the following Cisco CRS-1 systems:
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Firmware Support
The Cisco CRS-1 router supports the following firmware code:
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Cisco XR 12000 Series Router
This section describes the system requirements for Cisco IOS XR Software Release 3.6.1 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 "Determining the 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 3.6.1 features. Table 4 lists the Cisco IOS XR software feature set matrix (PIE files) and associated filenames available for Cisco IOS XR Software Release 3.6.1, supported on the Cisco XR 12000 Series Router.
Table 4 Cisco XR 12000 Series Router Supported Feature Set (Cisco IOS XR Software
Release 3.6.1 PIE Files)Cisco IOS XR IP Unicast Routing Core Bundle
c12k-mini.pie-3.6.1
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-3.6.1
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-3.6.1
CORBA2 agent, XML Parser, and HTTP server packages.
Cisco IOS XR MPLS Package
c12k-mpls.pie-3.6.1
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-3.6.1
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-3.6.1
Support for Encryption, Decryption, IPSec16 , SSH,17 SSL,18 and PKI.19 (Software based IPSec support - maximum of 500 tunnels or Hardware based IPSec - maximum of 64K tunnels using the SPA-IPSEC-2G-2)
Cisco IOS XR Standby RP Boot Image
mbiprp-rp.vm-3.6.1
Support for booting the Standby RP on a Cisco XR 12000 Series Router.
Cisco IOS XR Session Border Controller Package
c12k-sbc.pie-3.6.1
Session Border Controller Package for a Cisco XR 12000 Series Router.
Cisco IOS XR Service IPSec controller Package
c12k-ipsec-service.pie-3.6.1
Support for service-ipsec and service-gre interfaces in Cisco IOS XR software.
Cisco IOS XR Firewall package
c12k-firewall.pie-3.6.1
Support for Virtual Firewall (vFW) on a Cisco XR 12000 Series Router.
Cisco IOS XR Documentation Package
c12k-doc.pie-3.6.1
Man pages for Cisco IOS XR CLI commands.
Cisco IOS XR FPD Package
c12k-fpd.pie-3.6.1
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-3.6.1
Diagnostic utilities for Cisco IOS XR routers.
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 5 lists the Cisco XR 12000 Series Router TAR files.
Memory Requirements
Caution
The minimum memory requirements for Cisco XR 12000 Series Routers running Cisco IOS XR Software Release 3.6.1 consist of the following:
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Hardware Supported
Cisco IOS XR Software Release 3.6.1 supports the Cisco XR 12000 Series Router. All hardware features are supported on Cisco IOS XR software, subject to the memory requirements specified in the "Memory Requirements" section.
Table 6 lists the supported hardware components on the Cisco XR 12000 Series Router and the minimum required software versions. For more information, see the "Determining the Software Version" section.
Software Compatibility
Cisco IOS XR Software Release 3.6.1 is compatible with the following Cisco XR 12000 Series Router systems:
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Following chassis are supported for an existing installed base:
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Firmware Support
The Cisco XR 12000 Series Router supports the following firmware:
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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 Boot Helper version to support Release 3.6.1:
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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 the Software Version
To determine the version of Cisco IOS XR software running on your router, log in to the router and enter the show version command:
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RP/0/RP0/CPU0:router# show versionCisco CRS-1
On the Cisco CRS-1, you should see a response similar to the following:
Cisco IOS XR Software, Version 3.6.1[00]Copyright (c) 2008 by Cisco Systems, Inc.ROM: System Bootstrap, Version 1.49(20080319:195807) [CRS-1 ROMMON],MPLS-MR-1 uptime is 1 hour, 23 minutesSystem image file is "disk0:hfr-os-mbi-3.6.1/mbihfr-rp.vm"cisco CRS-16/S (7457) processor with 4194304K bytes of memory.7457 processor at 1197Mhz, Revision 1.228 Packet over SONET/SDH network interface(s)28 SONET/SDH Port controller(s)8 TenGigabitEthernet/IEEE 802.3 interface(s)2 Ethernet/IEEE 802.3 interface(s)18 GigabitEthernet/IEEE 802.3 interface(s)1019k bytes of non-volatile configuration memory.38079M bytes of hard disk.981440k bytes of ATA PCMCIA card at disk 0 (Sector size 512 bytes).Configuration register on node 0/0/CPU0 is 0x102Boot device on node 0/0/CPU0 is mem:Package active on node 0/0/CPU0:hfr-fpd, V 3.6.1[00], Cisco Systems, at disk0:hfr-fpd-3.6.1Built on Sun May 18 16:16:10 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-diags, V 3.6.1[00], Cisco Systems, at disk0:hfr-diags-3.6.1Built on Sun May 18 16:15:35 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-mcast, V 3.6.1[00], Cisco Systems, at disk0:hfr-mcast-3.6.1Built on Sun May 18 21:13:10 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-mpls, V 3.6.1[00], Cisco Systems, at disk0:hfr-mpls-3.6.1Built on Sun May 18 21:12:47 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-lc, V 3.6.1[00], Cisco Systems, at disk0:hfr-lc-3.6.1Built on Sun May 18 15:27:10 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-fwdg, V 3.6.1[00], Cisco Systems, at disk0:hfr-fwdg-3.6.1Built on Sun May 18 15:27:07 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-admin, V 3.6.1[00], Cisco Systems, at disk0:hfr-admin-3.6.1Built on Sun May 18 15:27:15 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-base, V 3.6.1[00], Cisco Systems, at disk0:hfr-base-3.6.1Built on Sun May 18 15:29:01 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-os-mbi, V 3.6.1[00], Cisco Systems, at disk0:hfr-os-mbi-3.6.1Built on Sun May 18 15:26:19 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8hfr-os-mbi, V 3.6.1[00], Cisco Systems, at disk0:hfr-os-mbi-3.6.1Built on Sun May 18 15:26:19 PDT 2008By edde-bld1 in /auto/srcarchive2/production/3.6.1/hfr/workspace for c2.95.3-p8Cisco XR 12000 Series Router
On the Cisco XR 12000 Series Router, you should see a response similar to the following:
Cisco IOS XR Software, Version 3.6.1[00] Copyright (c) 2008 by Cisco Systems, Inc.ROM: System Bootstrap, Version 12.0(20071023:043238) [sunnaik-rommon_hang 1.20] RELEASE SOFTWARE Copyright (c) 1994-2007 by cisco Systems, Inc.12416-PE1 uptime is 8 hours, 7 minutes System image file is "disk0:c12k-os-mbi-3.6.1/mbiprp-rp.vm"cisco 12416/PRP (7457) processor with 2097152K bytes of memory. 7457 processor at 1266Mhz, Revision 1.14 Cisco 12000 Series SPA Interface Processor-601/501/401 1 Cisco 12000 4 Port Gigabit Ethernet Controller (4 GigabitEthernet) 2 Cisco 12000 Series Performance Route Processors 1 Cisco 12000 4-Port ISE ATM Over SONET OC12/STM-4 Controller (4 ATM) 2 Cisco 12416 320 Gbps GSR Clock Scheduler Cards 3 Cisco 12416 320 Gbps Switch Fabric Cards 1 GSR Blower Module 11 T3 Port controller(s) 4 ATM Network Interface(s) 2 Packet over SONET/SDH network interface(s) 84 T1 Port controller(s) 7 SONET/SDH Port controller(s) 21 E1 Port controller(s) 17 PLIM QoS controller(s) 1 TenGigabitEthernet/IEEE 802.3 interface(s) 6 Ethernet/IEEE 802.3 interface(s) 209 Serial network interface(s) 16 Multilink network interface(s) 8 FastEthernet/IEEE 802.3 interface(s) 3 Controller for the management of multilink interfaces 22 GigabitEthernet/IEEE 802.3 interface(s) 1017k bytes of non-volatile configuration memory. 1000432k bytes of ATA PCMCIA card at disk 0 (Sector size 512 bytes). 2052768k bytes of ATA PCMCIA card at disk 1 (Sector size 512 bytes). 65536k bytes of Flash internal SIMM (Sector size 256k).Boot device on node 0/0/CPU0 is mem: Package active on node 0/0/CPU0: c12k-ipsec-service, V 3.6.1[00], Cisco Systems, at disk0:c12k-ipsec-service-3.6.1 Built on Mon May 19 02:01:01 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-mcast, V 3.6.1[00], Cisco Systems, at disk0:c12k-mcast-3.6.1 Built on Mon May 19 01:24:32 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-mpls, V 3.6.1[00], Cisco Systems, at disk0:c12k-mpls-3.6.1 Built on Mon May 19 01:24:05 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-k9sec, V 3.6.1[00], Cisco Systems, at disk0:c12k-k9sec-3.6.1 Built on Mon May 19 01:25:28 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-lc, V 3.6.1[00], Cisco Systems, at disk0:c12k-lc-3.6.1 Built on Mon May 19 01:34:38 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-fwdg, V 3.6.1[00], Cisco Systems, at disk0:c12k-fwdg-3.6.1 Built on Mon May 19 01:33:31 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-admin, V 3.6.1[00], Cisco Systems, at disk0:c12k-admin-3.6.1 Built on Mon May 19 01:32:40 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-base, V 3.6.1[00], Cisco Systems, at disk0:c12k-base-3.6.1 Built on Mon May 19 01:31:06 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8c12k-os-mbi, V 3.6.1[00], Cisco Systems, at disk0:c12k-os-mbi-3.6.1 Built on Mon May 19 01:26:30 UTC 2008 By edde-bld1 in /auto/srcarchive2/production/3.6.1/c12k/workspace for c2.95.3-p8
New Features and Enhancements
The following sections contain information on new features and enhancements in Cisco IOS XR Software Release 3.6.1:
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New Software Enhancement in Cisco IOS XR Release 3.6.1
In Cisco IOS XR Release 3.6.1, the VLAN ID range is increased to 32 bits. The subinterface number range is from 0 to 4294967295.
This range change affects the following functional areas:
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New Software Features in Cisco IOS XR Software Release 3.6.1
Cisco IOS XR Release 3.6.1 adds the ternary content-addressable memory (TCAM) carving feature on the Cisco XR 12000 Series Router. Earlier releases supported the following command:
hw-module pse allocate tcam location 0/1/CPU0 region n 0
where n is a region number 1 to 8.
In Release 3.6.1 the region IDs have been changed to alphanumeric values instead of numbers. The following table lists the mapping of the values:
For more information about accessing this feature, contact Cisco Support.
New Hardware Features Supported in Cisco IOS XR
No new hardware features were introduced on the Cisco CRS-1 or Cisco XR 12000 Series Router.
Cisco IOS XR Release 3.6.1 adds support for the 2GB/4GB Flash Disk Field Upgrade Procedure on the Cisco CRS-1 router. Refer to the upgrade procedure at:
http://www.cisco.com/en/US/docs/routers/xr12000/xr_line_cards/flashdisk/2GBDisk.html
Important Notes
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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 90...If 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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ft group 1peer 1no preemptassociate-context ctx1inservice•
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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.
Open Caveats—Release 3.6.1
This section lists the caveats for Cisco IOS XR Software Release 3.6.1:
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Cisco CRS-1 and Cisco XR 12000 Series Router Caveats
The following caveats apply to both platforms:
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Basic Description:
FTP directory parsing needs to work for install as well as copy.
Symptom:
Using FTP to install packages may result in incorrect parsing of the FTP URL. URLs that have multiple slashes may be sent to the server as a relative path instead of an absolute path.
Conditions:
The following URL should attempt to download /directory/file from the server. However, due to the incorrect parsing, it attempts to download "$HOME/directory/file."
ftp://username:password@server//directory/fileThe following syntax operates correctly, looking for a relative file location:
ftp://username:password@server/directory/file downloads "$HOME/directory/file"Workaround:
Locate the target file in the user's home directory so that it may be accessed via a relative path.
Use an alternative transport such as TFTP.
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mpls_lsd traceback after performing RP oir.
Symptom:
After RP FO or process restart of mpls_lsd, BGP may not send a resource-complete notification to LSD in the following cases:
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2.
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None.
Workaround:
None.
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The netio process crashes while enabling debug commands with ACL filter.
Symptom:
Sometimes, the netio process terminates abnormally when debug cef command with acl filter is used.
Conditions:
The problem occurs when the user enables debug cef packet ipv4acl and there is slowpathipv6 traffic being switched.
Workaround:
Specify the afi filter to the debug cef command that matches the type of debug acl being supplied to the debug command.
For example, use the commands in the following formats:
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Basic Description:
fib_mpls_show_fwding is slow for large tables and reading hw counters.
Symptom:
The output of the show mpls forwarding command takes about 30 minutes for an MPLS forwarding table with approximately 1500 entries.
Conditions:
Execute the CLI command show mpls forwarding.
Workaround:
None.
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Basic Description:
EXEC uses Radius Authorization while not the configured TACACS+ protocol.
Symptom:
When you configure Radius as Authentication protocol, and TACACS+ as Authorization protocol like the following:
aaa authorization exec default group tacacs+ localaaa authorization commands default group tacacs+aaa authentication login default group radius localNo matter how TACACS+ Authorization is configured on the server, the router running Cisco IOS XR software always uses the authorization from Radius for the login user.
Conditions:
This issue occurs in all cases with the above configuration.
Workaround:
None.
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Basic Description:
Connection to TACACS lost on RP failover.
Symptom:
After RP failover, a pre-existing exec (telnet) user is unable to execute any command. The issue is not seen consistently. However whenever it occurs, the EXEC user is not allowed to execute any command.
Conditions:
After RP failover when EXEC session is replicated, it initiates an lwm connection to locald. This connection attempt fails at times, if locald is still not available. This could have happened if the system and thereby loclad is still initializing. In such a case, if command authorization is configured, EXEC is unable to verify authorization for the command (as no channel is available to communicate request to locald). As such the user is denied permission to execute the command.
Workaround:
Exit from the session and log in again. It reconnects the lwm channel.
Caveats Specific to the Cisco CRS-1 Router
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Basic Description
The te tunnels flap after route processor failover (RPFO) on a Multi-Chassis system.
Symptom:
The te tunnels flap after route processor failover (RPFO) on a Multi-Chassis system.
Conditions:
The te tunnels flap after DSC route processor fail over.
Workaround:
Increase the signalling refresh interval to 180 on all RSVP links. The system will recover itself and no traffic loss will occur.
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Basic Description:
Sometimes, exec process gets terminated when describe CLI commands are used.
Symptom:
WD sysmon may terminate the exec process if a CPU hog occurs.
Conditions:
This symptom is observed on Cisco CRS-1 routers when using describe show tech-support or describe show screddrv standby.
Workaround:
There is no workaround to this problem. However, this problem appears very rarely and there is no impact on the functionality of the router.
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Basic Description:
show controllers asic sharq instance 0 registers: halts forwarding.
Symptom:
On the Cisco CRS-1, when you execute the command show controllers asic sharq instance 0 registers location R/S/CPU (R = Rack, S = Slot), all the traffic flow stops from all the ports on that physical layer interface module (PLIM). Sometimes you may also notice that the MSC reloads.
Conditions:
This occurs on a Cisco IOS XR image running on a Cisco CRS-1 router. The hardware populated is an MSC with SIP-800 populated with 10 GigE SPAs and 4-port OC-48 SPAs.
Workaround:
Reload the MSC if it has not reloaded.
Caveats Specific to the Cisco XR 12000 Series Router
The following caveats are specific to the Cisco XR 12000 Series Router platform:
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Basic Description:
Ace error messages appear and the traffic stops during spa-mix while sending IPSec and Clear IP Traffic over SPA-4XCT3/DS0 and SPA-IPSEC-2G.
Symptom:
Fails to process HAPI rx packet when spa-mix.
Conditions:
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Workaround:
If the IPSec SPA is used at full rate (1 Gbps per direction), locate the other SPA on a separate line card.
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Basic Description:
Bit error rate test (BERT) errors for the 3-in-24 pattern on the channel-group BERT for the 8-Port Channelized T1/E1 Shared Port Adapters (SPA).
Symptom:
Invoking BERT pattern 3-in-24 on the channel-group may result in BERT errors incrementing for the 8-Port Channelized T1/E1 SPA.
Conditions:
For the 8-Port Channelized T1/E1 SPA, invoking BERT pattern 3-in-24 on the channel-group may result in an increase in BERT errors.
Workaround:
None. There is no impact on the functionality of the system.
•
Basic Description:
After physical OIR, the show environment reports incorrect values for the Services card.
Symptom:
After physical OIR of the Services card, the temperature for that slot disappears (as seen in show environment temperatures CLI).
Conditions:
Upon OIR, show temperature does not display the temperature for the Services card.
Workaround:
None.
•
Basic Description:
Before initiating field diagnostics, the user is not warned to remove the cabling from the linecard under test.
Symptom:
Unexpected interrupts while field diagnostics is in progress.
Conditions:
–
–
Workaround:
Remove all external cables to the linecard under test before initiating field diagnostics.
•
Basic Description:
Crashing process mbus-prp multiple times results in rebooting of both active and standby RP.
Symptom:
Both the primary and standby RPs reload on a secure domain router when the mbus-prp process has crashed multiple times on the primary RP.
Conditions:
Issue the command process crash mbus-prp multiple times on the primary RP in a secure domain router.
Workaround:
None.
Further Description:
This problem happens only on secure domain routers.
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.
To locate information about upgrading Cisco IOS XR software, go to:
http://www.cisco.com/web/Cisco_IOS_XR_Software/index.html
Troubleshooting
For information on troubleshooting Cisco IOS XR Software, see the Cisco IOS XR Getting Started Guide and the Cisco IOS XR Troubleshooting Guide.
Related Documentation
The following sections describe the documentation available for the Cisco CRS-1 and the Cisco XR 12000 Series Router. Documentation is available in the form of PDF and HTML files and is available on www.Cisco.com.
Use these release notes with the following documents:
Hardware Documents
To access the most current hardware documentation, go to:
Cisco CRS-1 Series Router:
http://www.cisco.com/en/US/products/ps5763/tsd_products_support_series_home.html
Cisco XR 12000 Series Router:
http://www.cisco.com/en/US/products/ps6342/tsd_products_support_series_home.html
Software Documents
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. For a full list, see About Cisco IOS XR Software Documentation for Release 3.6 for a list of Cisco IOS XR Software documentation for Release 3.6.0.
To access the most current software documentation, go to:
http://www.cisco.com/en/US/products/ps5845/tsd_products_support_series_home.html
Obtaining Documentation, Obtaining Support, and Security Guidelines
For information about how to obtain documentation or support, on how to provide documentation feedback, for security guidelines, as well as on recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco Nexus, Cisco StadiumVision, the Cisco logo, DCE, and Welcome to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn is a service mark; and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, MediaTone, MeetingPlace, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.
All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0805R)
Copyright © 2008 Cisco Systems, Inc. All rights reserved.
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