Release Notes for Cisco Network Convergence System 560 Series Routers


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System Requirements

Cisco IOS XR Release 6.6.3 contains all features that are released in Cisco IOS XR Release 6.6.25.

For more information on Cisco IOS XR Release 6.6.25, see Release Notes for Cisco NCS 560 Series Routers, Cisco IOS XR Release 6.6.25.

Release 6.6.3 Packages

This table lists the Cisco IOS XR Software feature set matrix (packages) with associated filenames.

Table 1. Release 6.6.3 Packages for Cisco NCS 560 Series Router

Composite Package

Feature Set

Filename

Description

Cisco IOS XR IP Unicast Routing Core Bundle

ncs560-mini-x-6.6.3.iso

Contains base image contents that includes:

  • Host operating system

  • System Admin boot image

  • IOS XR boot image

  • BGP packages

  • OS

  • Admin

  • Base

  • Forwarding

  • Modular Services Card

  • Routing

  • SNMP Agent

  • Alarm Correlation

Cisco IOS XR Manageability Package

ncs560-mgbl-2.0.0.0-r663.x86_64.rpm

Telemetry, Extensible Markup Language (XML), Parser, and HTTP server packages, NETCONF, YANG Models, gRPC.

Cisco IOS XR OSPF package

ncs560-ospf-1.0.0.0-r663.x86_64.rpm

Supports OSPF

Cisco IOS XR Security Package

ncs560-k9sec-2.0.0.0-r663.x86_64.rpm

Support for Encryption, Decryption, Secure Shell (SSH), Secure Socket Layer (SSL), and Public-key infrastructure (PKI)

Multicast Package

ncs560-mcast-2.0.0.0-r663.x86_64.rpm

Supports Multicast

Supports Automatic Multicast Tunneling (AMT), IGMP Multicast Listener Discovery (MLD), Multicast Source Discovery Protocol (MSDP) and PIM.

Cisco IOS XR ISIS package

ncs560-isis-2.0.0.0-r663.x86_64.rpm

Supports Intermediate System to Intermediate System (IS-IS).

Cisco IOS XR USB Boot Package

ncs560-usb_boot-6.6.3.zip

Supports Cisco IOS XR USB Boot Package

Cisco IOS XR MPLS Package

ncs560-mpls-1.0.0.0-r663.x86_64.rpm

ncs560-mpls-te-rsvp-2.0.0.0-r663.x86_64.rpm

Supports MPLS and MPLS Traffic Engineering (MPLS-TE) RPM. Label Distribution Protocol (LDP), MPLS Forwarding, MPLS Operations, Administration, and Maintenance (OAM), Link Manager Protocol (LMP), Optical User Network Interface (OUNI) and Layer-3 VPN.

Cisco IOS XR MPLS-TE and RSVP Package

MPLS Traffic Engineering (MPLS-TE) and Resource Reservation Protocol (RSVP).

Determine Software Version

To verfiy the software version running on the router, use the show version command in the EXEC mode.

RP/0/RP0/CPU0:R21-NCS560-VIDEO#show version
Sat Dec 14 12:42:00.122 IST                
Cisco IOS XR Software, Version 6.6.3       
Copyright (c) 2013-2019 by Cisco Systems, Inc.

Build Information:
 Built By     : hlo
 Built On     : Fri Dec 13 17:16:37 PST 2019
 Built Host   : iox-lnx-030                 
 Workspace    : /auto/srcarchive15/prod/6.6.3/ncs560/ws
 Version      : 6.6.3                                  
 Location     : /opt/cisco/XR/packages/                

cisco NCS-560 () processor
System uptime is 26 minutes

Determine Firmware Support

Use the show fpd package command in Admin mode to view the hardware components with their current FPD version and status.

RP/0/RP0/CPU0:R21-NCS560-VIDEO#show fpd package 
Sat Dec 14 12:42:04.667 IST                     

=============================== ================================================
                                        Field Programmable Device Package       
                                ================================================
                                               Req     SW      Min Req   Min Req
Card Type            FPD Description           Reload  Ver     SW Ver  Board Ver
=================== ========================== ====== ======= ======== =========
--------------------------------------------------------------------------------
A900-IMA8CS1Z-CC     IMFPGA                     YES     1.95    1.95    0.0     
--------------------------------------------------------------------------------
A900-IMA8CS1Z-M      IMFPGA                     YES     1.95    1.95    0.0     
--------------------------------------------------------------------------------
A900-IMA8Z           IMFPGA                     YES    17.02   17.02    0.0     
--------------------------------------------------------------------------------
A900-IMA8Z-CC        IMFPGA                     YES    17.02   17.02    0.0     
--------------------------------------------------------------------------------
A900-PWR1200-A       DCA-PriMCU(A)              NO      0.11    0.11    0.0     
                     DCA-SecMCU(A)              NO      1.04    1.04    0.0     
--------------------------------------------------------------------------------
A900-PWR1200-D       LIT-PriMCU(A)              NO      2.04    0.04    0.0     
                     LIT-SecMCU(A)              NO      1.23    1.23    0.0     
--------------------------------------------------------------------------------
A900-PWR1200-D-E     QCS-PriMCU(A)              NO      1.82    1.82    0.0     
                     QCS-SecMCU(A)              NO      1.84    1.84    0.0     
--------------------------------------------------------------------------------
A907-FAN-E           PSOC(A)                    NO      1.66    1.66    0.4     
                     PSOC(A)                    NO      1.65    1.65    0.0     
--------------------------------------------------------------------------------
N560-4-FAN-H         PSOC(A)                    NO    177.02  177.02    0.0     
--------------------------------------------------------------------------------
N560-4-FAN-H-CC      PSOC(A)                    NO    177.02  177.02    0.0     
--------------------------------------------------------------------------------
N560-4-PWR-FAN       PSOC(A)                    NO    177.08  177.08    0.0     
--------------------------------------------------------------------------------
N560-4-PWR-FAN-CC    PSOC(A)                    NO    177.08  177.08    0.0     
--------------------------------------------------------------------------------
N560-4-RSP4          ADM(A)                     NO      1.04    1.04    0.0     
                     IOFPGA(A)                  YES     0.53    0.53    0.0     
                     PRIMARY-BIOS(A)            YES     0.15    0.15    0.0     
                     SATA(A)                    YES     1.30    1.30    0.0     
--------------------------------------------------------------------------------
N560-4-RSP4-CC       ADM(A)                     NO      1.04    1.04    0.0     
                     IOFPGA(A)                  YES     0.53    0.53    0.0     
                     PRIMARY-BIOS(A)            YES     0.15    0.15    0.0     
                     SATA(A)                    YES     1.30    1.30    0.0     
--------------------------------------------------------------------------------
N560-4-RSP4E         ADM(A)                     NO      1.04    1.04    0.0     
                     IOFPGA(A)                  YES     0.53    0.53    0.0     
                     PRIMARY-BIOS(A)            YES     0.15    0.15    0.0     
                     SATA(A)                    YES     1.30    1.30    0.0     
--------------------------------------------------------------------------------
N560-4-RSP4E-CC      ADM(A)                     NO      1.04    1.04    0.0     
                     IOFPGA(A)                  YES     0.53    0.53    0.0     
                     PRIMARY-BIOS(A)            YES     0.15    0.15    0.0     
                     SATA(A)                    YES     1.30    1.30    0.0     
--------------------------------------------------------------------------------
N560-FAN-H           PSOC(A)                    NO      2.02    2.02    0.0     
--------------------------------------------------------------------------------
N560-IMA2C-CC        IMFPGA                     YES     3.04    3.04    0.0     
--------------------------------------------------------------------------------
N560-RSP4            ADM(A)                     NO      1.04    1.04    0.0
                     IOFPGA(A)                  YES     0.53    0.53    0.0
                     PRIMARY-BIOS(A)            YES     0.15    0.15    0.0
                     SATA(A)                    YES     1.30    1.30    0.0
--------------------------------------------------------------------------------
N560-RSP4-E          ADM(A)                     NO      1.04    1.04    0.0
                     IOFPGA(A)                  YES     0.53    0.53    0.0
                     PRIMARY-BIOS(A)            YES     0.15    0.15    0.0
                     SATA(A)                    YES     1.30    1.30    0.0
--------------------------------------------------------------------------------
NCS560-IMA2C         IMFPGA                     YES     3.04    3.04    0.0

Use the show hw-module fpd command in EXEC mode to view the hardware components with their current FPD version and status. The status of the hardware must be CURRENT; Running and Programed version must be the same.

RP/0/RP0/CPU0:R21-NCS560-VIDEO#show hw-module fpd
Sat Dec 14 12:42:15.529 IST
                                                               FPD Versions
                                                               =================
Location   Card type        HWver FPD device       ATR Status   Running Programd
------------------------------------------------------------------------------
0/1       A900-IMA8CS1Z-M   0.0   IMFPGA               CURRENT    1.95    1.95
0/4       A900-IMA8Z        0.0   IMFPGA               CURRENT   17.02   17.02
0/5       A900-IMA8Z        0.0   IMFPGA               CURRENT   17.02   17.02
0/7       N560-IMA2C        0.0   IMFPGA               CURRENT    3.04    3.04
0/9       N560-IMA2C        0.0   IMFPGA               CURRENT    3.04    3.04
0/10      A900-IMA8Z        0.0   IMFPGA               CURRENT   17.02   17.02
0/11      A900-IMA8Z        0.0   IMFPGA               CURRENT   17.02   17.02
0/15      A900-IMA8CS1Z-M   0.0   IMFPGA               CURRENT    1.95    1.95
0/RP0     N560-RSP4-E       0.0   ADM                  CURRENT    1.04    1.04
0/RP0     N560-RSP4-E       0.0   IOFPGA               CURRENT    0.53    0.53
0/RP0     N560-RSP4-E       0.0   PRIMARY-BIOS         CURRENT    0.15    0.15
0/RP0     N560-RSP4-E       0.0   SATA                 CURRENT    1.30    1.30
0/RP1     N560-RSP4-E       0.0   ADM                  CURRENT    1.04    1.04
0/RP1     N560-RSP4-E       0.0   IOFPGA               CURRENT    0.53    0.53
0/RP1     N560-RSP4-E       0.0   PRIMARY-BIOS         CURRENT    0.15    0.15
0/RP1     N560-RSP4-E       0.0   SATA                 CURRENT    1.30    1.30
0/FT0     N560-FAN-H        1.0   PSOC                 CURRENT    2.02    2.02

Supported Software Features

Following are the features supported on Cisco IOS XR Release 6.6.3.

Access Pseudowire

The Access Pseudowire feature allows you to reduce the number of pseudowires (PWs) between the network Provider Edge (N-PE) devices. The user Provider Edge (U-PE) device connects to the N- PE device using access pseudowire (PW). This feature prevents signalling overhead and packet replication.

Unlike traditional VPLS where PWs terminate on a physical or logical port, an access PW terminates on N-PE devices. For each VPLS service, create an access PW between U-PEs and N-PEs.

VPLS requires a full mesh of pseudowire (PWs) between L2VPN PEs that participate in the VPLS service. For each VPLS service, PWs must be set up between the PEs. In a full mesh of PWs, the number of PWs increases as the number of PEs increases causing scalability issues. You can decrease the number of PWs with a hierarchy of PEs.

For more information about this feature, see the Configure Multipoint Layer 2 Services chapter in the L2VPN and Ethernet Services Configuration Guide for Cisco NCS 560 Series Routers, IOS XR Release 6.6.x.

DHCPv6 Relay over BVI for IANA Address Allocation

DHCPv6 Relay agents relay all packets that are coming from DHCPv6 clients over the access-interfaces towards external DHCPv6 servers to request IP addresses (::/128) through Internet Assigned Numbers Authority (IANA) allocation for the DHCPv6 clients. DHCPv6 Relay agents also receive response packets from the DHCPv6 servers and forward the packets towards DHCPv6 clients over BVI interfaces. DHCPv6 Relay agents act as stateless, by default, for DHCPv6 clients by not maintaining any DHCPv6 binding and respective route entry for the allocated IP addresses. You can enable a DHCPv6 client to get a particular IPv6 address assigned by the DHCPv6 server over a Bridge Virtual Interface (BVI) through IANA address allocation. Thereby, the DHCPv6 relay agent acts as a stateful relay agent and maintains DHCPv6 binding and respective route entry for the allocated IPv6 addresses.

For more information see the chapter, Implementing the Dynamic Host Configuration Protocol in the IP Addresses and Services Configuration Guide for Cisco NCS 560 Series Routers

G.8032 Ethernet Ring Protection Support on Layer 2 Bundle Interfaces

The G.8032 Ethernet Ring Protection feature is supported on Layer 2 bundle interfaces. This feature provides protection for Ethernet traffic in a ring topology. This feature prevents loops within the ring at the Ethernet layer by blocking either a predetermined link or a failed link.

For more information about this feature, see the Configure Point-to-Point Layer 2 Services chapter in the L2VPN and Ethernet Services Configuration Guide for Cisco NCS 560 Series Routers, IOS XR Release 6.6.x.

NSR

Starting with Cisco IOS XR Release 6.6.3, Nonstop routing (NSR) is supported on the NCS 560 Series Routers. Nonstop routing allows an RP failover, process restart, or in-service upgrade to be invisible to peer routers and ensures that there is minimal performance or processing impact. It suppresses IS-IS routing changes for devices with redundant route processors during processor switchover events (RP failover or ISSU), reducing network instability and downtime.

For more information, see Routing Configuration Guide for Cisco NCS 560 Series Routers, IOS XR Release 6.6.x.

NSR is supported on the following protocols:

  • NSR support for OSPF

    Nonstop routing (NSR) allows an RP failover, process restart, or in-service upgrade to be invisible to peer routers and ensures that there is minimal performance or processing impact. Routing protocol interactions between routers are not impacted by NSR. NSR is built on the warm standby extensions. NSR alleviates the requirement for Cisco NSF and IETF graceful restart protocol extensions.

    NSR is enabled by default for OSPF. To disable NSR, use the nsr disable command in the OSPF configuration mode.

    For more information, see Routing Configuration Guide for Cisco NCS 560 Series Routers, IOS XR Release 6.6.x.

  • NSR support for ISIS

    Non Stop Routing (NSR) suppresses IS-IS routing changes for devices with redundant route processors during processor switchover events (RP failover or ISSU), reducing network instability and downtime. When Non Stop Routing is used, switching from the active to standby RP have no impact on the other IS-IS routers in the network.

    For more information, see Routing Configuration Guide for Cisco NCS 560 Series Routers, IOS XR Release 6.6.x.

  • NSR support on BGP

    The Border Gateway Protocol (BGP) Nonstop Routing (NSR) with Stateful Switchover (SSO) feature enables all bgp peerings to maintain the BGP state and ensure continuous packet forwarding during events that could interrupt service. Under NSR, events that might potentially interrupt service are not visible to peer routers. Protocol sessions are not interrupted and routing states are maintained across process restarts and switchovers.

    BGP NSR provides nonstop routing during route processor switchover and process crash or process failure of BGP or TCP. BGP NSR is enabled by default.

    For more information, see BGP Configuration Guide for Cisco NCS 560 Series Routers, IOS XR Release 6.6.x.

For information on configuring NSR commands, see IP Addresses and Services Command Reference for Cisco NCS 5500 Series, Cisco NCS 540 Series, and Cisco NCS 560 Series Routers.

QoS L2 Re-Marking of Ethernet Packets on L3 Flows in Egress Direction

With this release, you now have the ability to perform Layer 2 (802.1p) marking on Layer 3 flows in the egress direction. This allows you to re-mark the priority of Ethernet packets on L3VPN traffic.

For more information, see the section QoS Re-marking of Ethernet Packets in Egress Direction in the Modular QoS Configuration Guide for Cisco NCS 560 Series Routers.

Rate Limit the Multicast and Broadcast Punted Traffic

This feature enables rate limiting the multicast and broadcast storms of punted traffic at the interface level. Normally, there's no rate limit on multicast and broadcast punted traffic reaching a node. This causes high CPU utilization. In order to protect the CPU from processing storms of multicast and broadcast punted traffic, it's recommended to configure a limit on the multicast and broadcast punted traffic at the interface level.

For more information see the chapter, Implementing LPTS in IP Addresses and Services Configuration Guide for Cisco NCS 560 Series Routers.

Support for Secondary IP Subnet on BVI

Secondary IP subnet is supported on BVI to enable redundancy and reduce traffic downtime. Also, this feature will enable you to support two different networks over a single interface.

For more information, see the Integrated Routing and Bridging chapter in the Interface and Hardware Component Configuration Guide for Cisco NCS 560 Series Routers.

Supported Hardware Features

There are no new hardware features introduced in this release.

Restrictions and Limitations on the Cisco NCS 560 Series Router

  • The show inventory and the show diagnostic commands do not display the fan serial number.

  • The hw-module profile mfib statistics command is not supported.

  • Ensure that the ISIS hello interval-timer value is not greater than six seconds, otherwise it may result in an ISIS adjacency flap.

  • Do not use the Cisco N560-RSP4 and Cisco N560-RSP4-E route processors together in the same router.

Caveats

This section describes open and resolved severity 1 and 2 caveats and select severity 3 caveats:

  • The “Open Caveats” sections list open caveats that apply to the current release and may apply to previous releases. A caveat that is open for a prior release and is still unresolved applies to all future releases until it is resolved.

  • The “Resolved Caveats” sections list caveats resolved in a specific release, but open in previous releases.

The bug IDs are sorted alphanumerically.


Note

The Caveats section includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a specific caveat you must use the Bug Search Tool.


Cisco IOS XR Caveats Release 6.6.3

Caveat ID Number

Descriptiom

CSCvs21831

"mrib: %ROUTING-MRIB-4-GEN_WARN : Re-pulse client" transient warning message may show at boot up

CSCvr68263

ERROR msg: “qos client lib msg send FAILED: reason: Invalid argument”

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).

The upgrade document (NCS560_Upgrade_MOP_6.6.3.pdf) is available along with the software images.

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Cisco Bug Search Tool

Cisco Bug Search Tool (BST) is a web-based tool that acts as a gateway to the Cisco bug tracking system that maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. BST provides you with detailed defect information about your products and software.