Table Of Contents
Release Notes for Cisco IOS XR Release 3.8.0
Key Changes from Previous Releases in Cisco IOS XR Release 3.8.0
Determining Your Software Version
New Software Features in Cisco IOS XR Software Release 3.8.0
New Software Features Supported on all Platforms
Cisco CRS-1 Router-Specific Software Features
Cisco XR 12000 Series Router-Specific Software Features
New Hardware Features for Software Release 3.8.0
Cisco CRS-1 Router-Specific Hardware Features
Cisco XR 12000 Series Router-Specific Hardware Features
Minimum Flash Disk Requirements When Upgrading to Release 3.8.0
Caveats Specific to the Cisco CRS-1 Router
Caveats Specific to the Cisco XR 12000 Series Router
Upgrading Cisco IOS XR Software
Product Life Cycle of Cisco IOS XR Software Release 3.8.0
Obtaining Documentation and Submitting a Service Request
Release Notes for Cisco IOS XR Release 3.8.0
July 9, 2009
Cisco IOS XR Software Release 3.8.0
Text Part Number OL-17358-03
These release notes describe the features provided in the Cisco IOS XR Software Release 3.8.0 and are updated as needed.
Note
For information about Cisco IOS XR Software Release 3.8.0, see the "Important Notes" section.
You can find the most current Cisco IOS XR software documentation on the World Wide Web at http://www.cisco.com/en/US/partner/products/ps5845/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" section on page 25.
For a list of software caveats that apply to Cisco IOS XR Software Release 3.8.0, see the "Caveats" section. The caveats are updated for every release and are described 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.
Key Changes from Previous Releases in Cisco IOS XR Release 3.8.0
Cisco IOS XR Software Release 3.8.0 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 3.8.0. For more information, see the "Minimum Flash Disk Requirements When Upgrading to Release 3.8.0" 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 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 3.8.0, see the "New Features and Enhancements" section in this document.
System Requirements
Cisco IOS XR Software Release 3.8.0 supports the following platforms:
To determine the software versions or levels of your current system, see the "Determining Your Software Version" section.
Cisco CRS-1
This section describes the system requirements for Cisco IOS XR Software Release 3.8.0 supported on the Cisco CRS-1. The system requirements include the following information:
To determine the software versions or levels of your current system, see Determining Your Software Version.
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 3.8.0 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 3.8 supported on the Cisco CRS-1.
Table 1 Cisco CRS-1 Supported Feature Sets
(Cisco IOS XR Software Release 3.8.0 PIE Files)Cisco IOS XR IP Unicast Routing Core Bundle
comp-hfr-mini.pie-3.8.0
Contains the required core packages, including OS, Admin, Base, Forwarding, Modular Services Card, Routing, SNMP Agent, and Alarm Correlation.
Cisco IOS XR IP Unicast Routing Core Bundle
comp-hfr-mini.vm-3.8.0
Contains the required core packages including OS, Admin, Base, Forwarding, Modular Services Card, Routing, SNMP Agent, and Alarm Correlation.
Cisco IOS XR Manageability Package
hfr-mgbl-p.pie-3.8.0
Cisco IOS XR MPLS Package
hfr-mpls-p.pie-3.8.0
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-3.8.0
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-3.8.0
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-3.8.0
Man pages for Cisco IOS XR CLI commands
Cisco IOS XR FPD Package
hfr-fpd.pie-3.8.0
Firmware for Fixed PLIM20 and SPA21 modules as well as ROMMON22 images for Cisco CRS-1 chassis.
Cisco IOS XR Diagnostic Package
hfr-diags-p.pie-3.8.0
Diagnostic utilities for Cisco IOS XR 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 the Cisco CRS-1 TAR files.
Memory Requirements
Caution
The minimum memory requirements for Cisco CRS-1 running Cisco IOS XR Software Release 3.8.0 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.
The following table lists the supported hardware components on the Cisco CRS-1 and the minimum required software versions. For more information, see the "Other Firmware Support" section.
Software Compatibility
Cisco IOS XR Software Release 3.8.0 is compatible with the following Cisco CRS-1 systems:
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Other Firmware Support
The Cisco CRS-1 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 3.8.0 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 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 3.8.0 features. Table 4 lists the Cisco IOS XR software feature set matrix (PIE files) and associated filenames available for Cisco IOS XR Software Release 3.8.0, supported on the Cisco XR 12000 Series Router.
Table 4 Cisco XR 12000 Series Router Supported Feature Set (Cisco IOS XR Software
Release 3.8.0 PIE Files)Cisco IOS XR IP Unicast Routing Core Bundle
c12k-mini.pie-3.8.0
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-3.8.0
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-3.8.0
CORBA2 agent, XML Parser, and HTTP server packages.
Cisco IOS XR MPLS Package
c12k-mpls.pie-3.8.0
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-3.8.0
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-3.8.0
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-2Cisco IOS XR Standby RP Boot Image
mbiprp-rp.vm-3.8.0
Support for booting the Standby RP on a Cisco XR 12000 Series Router.
Cisco IOS XR Service IPsec Controller Package
c12k-ipsec-service.pie-3.8.0
Support for service-ipsec and service-gre interfaces in Cisco IOS XR software.
Cisco IOS XR Firewall Package
c12k-firewall.pie-3.8.0
Support for Virtual Firewall (vFW) on a Cisco XR 12000 Series Router.
Cisco IOS XR Documentation Package
c12k-doc.pie-3.8.0
Man pages for Cisco IOS XR CLI commands.
Cisco IOS XR FPD Package
c12k-fpd.pie-3.8.0
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-3.8.0
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 3.8.0 consist of the following:
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Hardware Supported
Cisco IOS XR Software Release 3.8.0 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 Your Software Version" section.
Software Compatibility
Cisco IOS XR Software Release 3.8.0 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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Other Firmware Support
The Cisco XR 12000 Series Router supports the following firmware:
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For Engine 3 line card:
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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 3.8.0:
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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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Cisco CRS-1
On the Cisco CRS-1, you should see a response similar to the following (which has been abbreviated for the Release Notes):
RP/0/RP0/CPU0:P2_CRS-8# show versionCisco IOS XR Software, Version 3.8.0[00]Copyright (c) 2009 by Cisco Systems, Inc.ROM: System Bootstrap, Version 1.52(20081016:231824) [CRS-1 ROMMON],P2_CRS-8 uptime is 1 week, 1 day, 14 hours, 27 minutesSystem image file is "bootflash:disk0/hfr-os-mbi-3.8.0/mbihfr-rp.vm"cisco CRS-8/S (7457) processor with 4194304K bytes of memory.7457 processor at 1197Mhz, Revision 1.24 Management Ethernet20 SONET/SDH16 GigabitEthernet20 Packet over SONET/SDH1019k bytes of non-volatile configuration memory.38079M bytes of hard disk.2053440k bytes of disk0: (Sector size 512 bytes).2053440k bytes of disk1: (Sector size 512 bytes).Configuration register on node 0/1/CPU0 is 0x102Boot device on node 0/1/CPU0 is mem:Package active on node 0/1/CPU0:hfr-services, V 3.8.0[00], Cisco Systems, at disk0:hfr-services-3.8.0Built on Fri Mar 28 01:08:15 PST 2009By sjc5-gf-021.cisco.com in...Cisco XR 12000 Series Router
On the Cisco XR 12000 Series Router, you should see a response similar to the following (which has been abbreviated for the Release Notes):
RP/0/0/CPU0:PE6_C12406# show versionCisco IOS XR Software, Version 3.8.0[00]Copyright (c) 2009 by Cisco Systems, Inc.ROM: System Bootstrap, Version 12.0(20041108:104740) [ashp-cisp-rommon 1.16dev(0.1)]Copyright (c) 1994-2004 by cisco Systems, Inc.PE6_C12406 uptime is 5 weeks, 2 days, 24 minutesSystem image file is "disk0:c12k-os-mbi-3.8.0/mbiprp-rp.vm"cisco 12406/PRP (7457) processor with 2097152K bytes of memory.7457 processor at 1266Mhz, Revision 1.21 Cisco 12000 Series Performance Route Processor1 Cisco 12000 4-Port ISE ATM Over SONET OC3/STM-1 Controller (4 ATM)1 Cisco 12000 Series SPA Interface Processor-601/501/4011 Cisco 12000 Series SPA Interface Processor-6003 Management Ethernet6 PLIM_QOS1 MgmtMultilink5 SONET/SDH5 GigabitEthernet/IEEE 802.3 interface(s)7 VLAN sub-interface(s)4 Asynchronous Transfer Mode7 ATM network sub-interface(s)3 ATM network L2transport sub-interface(s)1018k bytes of non-volatile configuration memory.1000496k bytes of disk0: (Sector size 512 bytes).1000432k bytes of disk1: (Sector size 512 bytes).65536k bytes of Flash internal SIMM (Sector size 256k).Configuration register on node 0/0/CPU0 is 0x0Boot device on node 0/0/CPU0 is disk0:Package active on node 0/0/CPU0:c12k-doc, V 3.8.0[00], Cisco Systems, at disk0:c12k-doc-3.8.0Built on Mon Mar 9 20:32:11 PST 2009...
New Features and Enhancements
The following sections contain information on new features and enhancements in Cisco IOS XR Software Release 3.8.0:
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New Software Features in Cisco IOS XR Software Release 3.8.0
New Software Features Supported on all Platforms
The following new software features in Cisco IOS XR Software Release 3.8.0 are supported on both the Cisco CRS-1 and the Cisco XR 12000 Series Router:
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Cisco CRS-1 Router-Specific Software Features
The following new features in Cisco IOS XR Software Release 3.8.0 are supported only on the Cisco CRS-1 platform:
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Cisco XR 12000 Series Router-Specific Software Features
The following new features in Cisco IOS XR Software Release 3.8.0 are supported only on the Cisco XR 12000 Series Router platform:
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New Hardware Features for Software Release 3.8.0
The following new hardware features were introduced in Cisco IOS XR Software Release 3.8.0. For detailed information on the shared port adapters (SPAs) and SPA interface processors (SIPs), see the following documents:
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Cisco CRS-1 Router-Specific Hardware Features
The following new features in Cisco IOS XR Software Release 3.8.0 are supported on the Cisco CRS-1 platform:
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Cisco XR 12000 Series Router-Specific Hardware Features
The following new features in Cisco IOS XR Software Release 3.8.0 are supported on the Cisco XR 12000 Series Router platform.
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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 20!!Cisco 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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Minimum Flash Disk Requirements When Upgrading to Release 3.8.0
Cisco IOS XR Software Release 3.8 requires a 2-GB Flash Disk as a minimum, so if your Cisco CRS-1 or 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 3.8. The PCMCIA 1-GB Flash Disk was the default size for the Cisco CRS-1 and Cisco XR 12000 Series Router running Cisco IOS XR Software Release 3.6 and earlier.
A 4-GB Flash Disk is available for both platforms and 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 Cisco XR12000 and CRS-1 Flash Disk Upgrade Tasks document at http://www.cisco.com/en/US/docs/routers/xr12000/xr_line_cards/flashdisk/flashdisk.pdf.
Additional upgrade instructions for the Cisco CRS-1 router are available from http://www.cisco.com/web/Cisco_IOS_XR_Software/pdf/ReplacingPCMCIACardOnCRS-1.pdf.
Caveats
Caveats describe unexpected behavior in Cisco IOS XR software releases. Severity-1 caveats are the most serious.
The following caveats are open for Cisco IOS XR Software Release 3.8.0 on the router platforms indicated:
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Cisco IOS XR Caveats
The following caveats apply to both platforms:
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Basic Description:
This bug results in an IS-IS adjacency going down on an interface, typically following an event such as interface flap or IS-IS process restart. The cause of the bug is a race condition inside the LPTS Port Arbitrator with respect to the delete and re-addition of the binding for the IS-IS adjacency.
Specifically, when this bug is encountered, the hardware LPTS pre-ifib database does not contain an IS-IS entry for the interface, whereas the software LPTS pre-ifib does contain it.
The two databases can be verified by looking at show lpts pifib hardware entry type isis location node-id and show lpts pifib entry type isis location node-id, respectively.
Symptoms:
IS-IS adjacency is down on an interface, with the hardware LPTS database showing missing entries.
Conditions:
Delays in updating the TCAM entries and other related clean-up when an LPTS binding for the IS-IS adjacency is removed.
Workaround:
None.
Recovery:
Restart the pifibm_server on the LC where the IS-IS interface is present. If that does not help, a restart of lpts_pa should fix the problem. The restarts should not cause issues for other routing protocols.
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Basic Description:
Leak in bfd_agent process after multiple SPA OIRs.
Symptom:
1.6 k of memory leak is seen in bfd_agent process after multiple SPA OIR events.
Conditions:
SPA OIR causes a tiny memory leak which leads to process restart after several hundred SPA OIR events. System is not impacted by this memory leak.
Workaround:
None.
Recovery:
No manual recovery is necessary. After several hundred OIR events the process gets automatically restarted without packet loss.
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Basic Description:
Crashing mpls_ldp process does not trigger failover in NSR scenarios.
Symptom:
This issue occurs in rare circumstances when NSR is enabled and the NSR process-failure switchover configuration is added. This indicates that if any process (BGP, TCP, LDP) crashes and NSR sessions are up, RP failover is triggered as a means to recovery to keep NSR and sessions up.
Conditions:
This issue is seen on process crashes of mpls_ldp with core dump going to disk and the above configuration present if the core dump takes longer than 15 seconds (LDP discovery hold time).
Workaround:
When NSR is configured and the above process-failure configuration is present, turn off the core for LDP or dumping core to /tmp first.
process <mpls jid> core off
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process <mpls jid> core copy
Other option is to increase the LDP discovery hold time.
Caveats Specific to the Cisco CRS-1 Router
The following caveats are specific to the Cisco CRS-1 platform:
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Basic Description:
Bandwidth remaining 0% does not work as expected.
Symptom:
If a class has bandwidth remaining of 0% configured, that class may receive more bandwidth than the minimum bandwidth configured in that class.
Conditions:
This behavior is seen in classes with "bandwidth remaining percent 0" configured.
Workaround:
Configure shape bandwidth to be the same as minimum bandwidth of that class.
Important Notes:
The effect of the this is that the router does not allow a service-policy to be attached to an interface, if following two conditions occur:
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This behavior change was introduced in Cisco IOS XR Release 3.7.x with this caveat. Thus, customers with such configs need to modify their configs accordingly before upgrading to Cisco IOS XR Release 3.7.x to avoid any config failures.
To avoid this issue, if there is a class that has implicit bandwidth remaining percent equal to 0% for a class, then explicitly configure a non- zero value of bandwidth remaining percent. Or, change the values of bandwidth remaining percent in other classes to implicitly allocate a bandwidth remaining percent of non-zero value. Or, configure a minimum bandwidth using the bandwidth command.
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Basic Description:
POS bundle statistics are inaccurate after member link is removed and re-added.
Symptom:
Removing and re-adding a member link from a POS bundle results in traffic statistics on the bundle interface being out of sync between opposite ends of the bundle. Egress statistics on the side where the change is made does not match corresponding ingress starts on the opposite end. However, total statistics on the physical links match opposite ends in both directions.
Conditions:
Remove link from bundle by either no bundle id on corresponding link configuration. Or, shutdown the physical link interface and then reverse operation to add the link back into the bundle.
Workaround:
None.
Recovery:
Remove all bundle members and add them back has been shown to work. Performing shut or no shut on the main bundle interface, on the side where the change is made, may restore accurate statistics.
Impact:
No impact on data forwarding over bundle, even though bundle statistics are no longer accurate at one end of bundle link. Statistics for individual links are ok.
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Basic Description:
User Configured LPTS policer not properly applied after reload or LC OIR.
Symptom:
The LPTS hardware policer configurations are lost—for example, set to their default values and not the configured ones—after an OIR or reload.
Conditions:
This condition occurs after LC OIR or router reload, for example, lpts pifib hardware police location 0/2/CPU0 flow ospf multicast known rate 34. The above commands configure OSPF known multicast rate to 34 and on LC OIR or reload it resets to the defaults.
Workaround:
None.
Recovery:
After OIR or reload, reapply the LPTS hardware policer configuration manually.
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Basic Description:
After failover, the standby RP copies software packages a second time.
Symptom:
Standby RP resyncs installed software packages a second time.
Conditions:
After upgrading from one release to another if a failover is done, before doing install commit, this issue is encountered.
Workaround:
Do install commit at the end of software installation or before doing a failover.
Recovery:
If you encounter this issue, the route processor resyncs the packages and becomes active again within an hour without user intervention.
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Basic Description:
The install verify command reports errors that can be safely ignored.
Symptom:
The install verify command may detect anomalies on LCs (and maybe some RPs and DRPs) and output an error message: Info: /install/hfr-base-3.8.0/remote/lib/install_debug_remote: Info: exists with unexpected file size.
Conditions:
The install_debug_remote file on some RP or DRP nodes might be empty. In normal scenarios the file is a dummy file so the zero-length file problem actually has no any functional impact to the system.
Workaround:
None.
Recovery:
No recovery is necessary. The specific anomaly can be ignored.
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Basic Description:
Unable to poll memory utilization with SNMP on named SDR routers.
Symptom:
CPU related OIDs for ENTITY-MIB, CISCO-PROCESS-MIB, and CISCO-ENHANCED-MEMORYPOOL-MIB on MSC line cards on a named SDR are not reported.
Conditions:
This symptom is observed on Cisco CRS-1 routers with the MSC line card hardware with Cisco IOS XR Software Release 3.8.0 where the MSC line cards are configured as a named SDR.
Workaround:
None.
The following CLI commands can be used to view the details not reported by the MIBs:
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Basic Description:
No warning after QoS policy on new bundle member beyond HW scale.
Symptom:
Adding a bundle member to an existing bundle interface with QoS policy configured is committed successfully with no errors or warnings, but the bundle member is not correctly programmed with the existing QoS policy.
Conditions:
This scenario is encountered when the QoS policy hardware scale limit is reached, so the extra configured bundle member does not get the proper policy applied.
Workaround:
None. This represents a hardware scale limit.
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Basic Description:
Power-disabled DRP causes much slower line-card boot time.
Symptom:
When the router comes up for the first time (meaning all nodes in the system are booting), the CPUs of any MSC (line card) take longer than normal to come up.
Conditions:
This occurs if there is a DRP CPU configured to be power-disabled (hw-module power disable location 0/6/cpu0) at router bootup. This does not happen with DRP SPs or any other card type.
Recovery:
LC comes up to IOS-XR ready state after approximately one hour without intervention.
Caveats Specific to the Cisco XR 12000 Series Router
The following caveats are specific to the Cisco XR 12000 Series Router platform:
•
Basic Description:
A 15 second delay resolving recursive routes after resolving route installed occurs.
Symptom:
On a router with scaled configuration, a failure message related to bcdl may be observed after clear cef linecard.
Conditions:
This is observed while testing the Cisco IOS XR Software Release 3.8.0 image on a router configured with Cisco IOS XR Software Release 3.8.0 scale (Profile 2) numbers.
Workaround:
None.
•
Basic Description:
Warning filesystem is not FAT32 message during boot time of Cisco IOS XR Software Release 3.8.0.
Symptom:
Warning filesystem is not FAT32 message may be displayed while the RP boots up.
Conditions:
This symptom is observed on a Cisco XR 12000 Series Router running Cisco IOS XR Software Release 3.8.0 software if the boot disk is formatted as FAT16 (which is default).
Workaround:
None.
Recovery:
It is safe to ignore this warning.
•
Basic Description:
IPv6 multicast VPN traffic drops following line card OIR.
Symptom:
IPv6 multicast VPN traffic may not be forwarded correctly following a line card OIR.
Conditions:
This issue was observed on a Cisco XR 12000 Series Router running Cisco IOS XR Software Release 3.8.0 following the OIR of a line card.
Workaround:
None.
Recovery:
Use the LC command clear mfib database on the customer-facing line card.
•
Basic Description:
Cisco 12410 chassis fail to properly recognize intelligent DC power supplies.
Symptom:
Cisco IOS XR Software Release 3.8.0 fails to detect the correct DC power supply for Cisco 12410 chassis.
Conditions:
This symptom is observed on a Cisco XR 12410 chassis with intelligent PEMs and the console displaying the following information:
RP/0/9/CPU0:ios(admin)# show environment power detail Fri Mar 6 12:32:35.972 UTC48V CurrentR/S/I Module (V) (A)0/24/* PEM1 54 5 PWR-GSR10-AC= Standard AC PSPEM2 54 5 PWR-GSR10-AC= Standard AC PS0/25/* PEM1 54 5 PWR-GSR10-AC= Standard AC PSPEM2 54 4 PWR-GSR10-AC= Standard AC PSWorkaround:
None at this time. This is a cosmetic issue. The power supplies function correctly.
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
Note
Product Life Cycle of Cisco IOS XR Software Release 3.8.0
The Cisco IOS XR Software release strategy is time-based with a fixed release date and life cycle, as opposed to being a feature-based release strategy with a variable release date.
Table 7 lists the major milestones of Cisco IOS XR Software Release 3.8.0.
For official End-of-Life and End-of-Sale announcements for Cisco IOS XR Software, please visit http://www.cisco.com/en/US/products/ps5845/prod_eol_notices_list.html or contact your local account representative.
Troubleshooting
For information on troubleshooting Cisco IOS XR software, see Cisco IOS XR Getting Started Guide and Cisco IOS XR Troubleshooting Guide.
Related Documentation
The following sections describe the documentation available for the Cisco CRS-1 router 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:
Hardware Documents
You can find the most current hardware documentation at the following URLs:
Cisco CRS-1:
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. See About Cisco IOS XR Software Documentation for Release 3.8 for a list of Cisco IOS XR Release 3.8.0 software documentation.
You can find the most current software documentation for the Cisco CRS-1 and Cisco XR 12000 Series Router at the following URL:
http://www.cisco.com/en/US/products/ps5845/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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