Network Convergence System 5500 Series Routers


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What’s new in Cisco IOS XR Release

Priority Flow Control and Priority Flow Control Watchdog

This release adds the Priority Flow Control (PFC) and PFC Watchdog features.

Priority Flow Control (PFC) is a mechanism that prevents frame loss that is due to transient congestion. During congestion, PFC sends a pause frame that indicates which CoS value needs to be paused. By configuring PFC, you ensure that the data packets are handled efficiently.

In case of a faulty device or a misconfiguration, PFC frame propagation may lead to sustained buffering of frames in paused queues. To detect a bad device, the PFC watchdog mechanism monitors the rate of incoming PFC frames on all PFC-enabled devices. After the default watchdog thresholds are crossed, the mechanism takes an appropriate action.

To know more about the PFC feature and its configuration details, see the Configuring Ethernet Interface chapter in the Interface and Hardware Component Configuration Guide for Cisco NCS 5500 Series Routers. To know more about configuring PFC thresholds and the PFC watchdog mechanism, see the Configuring Priority Flow Control Thresholds chapter in the Modular QoS Configuration Guide for Cisco NCS 5500 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 5500 Series Routers, IOS XR Release 6.6.x.

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 5500 Series Routers.

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 5500 Series Routers

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 5500 Series Routers, IOS XR Release 6.6.x.

IPv6 Extension Header

By default, the control plane CPU filters the packets with extension headers. Filtering the packets in CPU reduces the packet rate and thus leads to packet drop.

With IPv6 Extension Header, you can avoid filtering of packets with extension headers and yet process the packets at line rate.

For more information on this feature, see Implementing Access Lists and Prefix Lists in the IP Addresses and Services Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.6.x.

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 5500 Series Routers.

MPLS VPN support for EIGRP between Provider Edge (PE) and Customer Edge (CE)

The MPLS VPN Support for EIGRP Between PE and CE feature allows service providers to configure the Enhanced Interior Gateway Routing Protocol (EIGRP) between provider edge (PE) and customer edge (CE) devices in a Multiprotocol Label Switching (MPLS) virtual private network (VPN) and offer MPLS VPN services to those customers that require native support for EIGRP. An MPLS VPN consists of a set of sites that are interconnected by an MPLS provider core network. At each customer site, one or more CE devices attach to one or more PE devices.

For more information, see the chapter, Implementing EIGRP in the Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.6.x.

LFA Based FRR and Remote LFA for MLDP

IP Loop Free Alternative FRR is a mechanism that enables a router to rapidly switch traffic to a pre-computed or a pre-programmed loop-free alternative (LFA) path (Data Plane Convergence), following either an adjacent link and node failure, or an adjacent link or node failure in both IP and LDP networks. The LFA path is used to switch traffic till the router installs the new primary next-hops based upon the changed network topology (Control Plane Convergence).

For more information see the chapter, Implementing Layer-3 Multicast Routing in Multicast Configuration Guide for Cisco NCS 5500 Series Routers

Multicast over Access Pseudo-Wire

Multicast over access PWs allows multicast traffic flooding with MLDP core and PWs that are terminating at CEs. Therefore, connecting two IGMP domains and extending the MVPN traffic via MPLS network terminating at a Layer 3 (VRF or global) domain or a Layer 2 domain using PW.

Multicast over access PWs helps service providers to scale and reduce the hardware cost.

For more information see the chapter, Implementing Multicast in Multicast Configuration Guide for Cisco NCS 5500 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 5500 Series Routers.

Enhancements to the Multicast Route Statistics

This feature provides information about the IPv4 and IPv6 multicast route statistics. The multicast statistics includes information on the numbers of packets received for a multicast route over an interface in ingress and egress directions.

This feature is already supported in previous releases, however in this release following enhancements are introduced:

  • IPv6 multicast route statistics are supported.

  • Multicast route statistics for egress direction is supported.

For more information oh how to enable multicast route statistics, see Implementing Multicast chapter in Multicast Configuration Guide for Cisco NCS 5500 Series Routers

Multicast MLDP Profile 14 support on an Edge Router

The MLDP Profile 14 is supported when the router is configured as an edge router.

IP based transport network is a cost efficient and convenient alternative to deliver video services combined with the delivery of other IP based services. To deliver IPTV content MLDP Profile 14 (partitioned MDT) is supported when router is configured as an edge router.

For more information see chapter, Implementing Multicast in Multicast Configuration Guide for Cisco NCS 5500 Series Routers

New Hardware Introduced in this Release

No new hardware features are introduced in this release.

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 5500 Series Router

Composite Package

Feature Set

Filename

Description

Cisco IOS XR IP Unicast Routing Core Bundle

ncs5500-mini-x.iso

Contains base image contents that includes:

  • Host operating system

  • System Admin boot image

  • IOS XR boot image

  • BGP packages

Individually-Installable Optional Packages

Feature Set

Filename

Description

Cisco IOS XR Manageability Package

ncs5500-mgbl-3.0.0.0-r663.x86_64.rpm

Extensible Markup Language (XML) Parser, Telemetry, Netconf, gRPC and HTTP server packages.

Cisco IOS XR MPLS Package

ncs5500-mpls-2.1.0.0-r663.x86_64.rpm

ncs5500-mpls-te-rsvp-2.2.0.0-r663.x86_64.rpm

MPLS and MPLS Traffic Engineering (MPLS-TE) RPM.

Cisco IOS XR Security Package

ncs5500-k9sec-3.1.0.0-r663.x86_64.rpm

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

Cisco IOS XR ISIS package

ncs5500-isis-1.2.0.0-r663.x86_64.rpm

Support for ISIS

Cisco IOS XR OSPF package

ncs5500-ospf-2.0.0.0-r663.x86_64.rpm

Support for OSPF

Cisco IOS XR EIGRP package

ncs5500-eigrp-2.0.0.0-r663.x86_64.rpm

Support for EIGRP

Lawful Intercept (LI) Package

ncs5500-li-1.0.0.0-r663.x86_64.rpm

Includes LI software images

Multicast Package

ncs5500-mcast-1.0.0.0-r663.rpm

Support for Multicast

Determine Software Version

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

RP/0/RP0/CPU0:router# show version
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 17:40:12 PST 2019
Built Host   : iox-lnx-029
Workspace    : /auto/srcarchive15/prod/6.6.3/ncs5500/ws
Version      : 6.6.3
Location     : /opt/cisco/XR/packages/
 
cisco NCS-5500 () processor
System uptime is 59 minutes

Caveats

Caveats describe unexpected behavior in Cisco IOS XR Software releases. Severity-1 caveats are the most critical caveats; severity-2 caveats are less critical.

Cisco IOS XR Caveats

There are no caveats specific to Cisco IOS XR Software Release.

Caveats Specific to the NCS 5500 Routers

Caveats describe unexpected behavior in Cisco IOS XR Software releases.

There are no caveats in this release

Caveat

Description

CSCvs21831

"mrib: %ROUTING-MRIB-4-GEN_WARN : Re-pulse client" transient warning message may show in syslog

Determine Firmware Support

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.

This sample show hw-module fpd command output is taken from NCS 5508 chassis:

RP/0/RP0/CPU0:router(admin)#show fpd package


=============================== ================================================
                                        Field Programmable Device Package
                                ================================================
                                               Req     SW      Min Req   Min Req
Card Type            FPD Description           Reload  Ver     SW Ver  Board Ver
=================== ========================== ====== ======= ======== =========
NC55-12X100G-SE-PR   Bootloader                 YES     1.14      1.14      0.0 
                     IOFPGA                     YES     0.12      0.12      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-12X100GE-PROT   Bootloader                 YES     1.19      1.19      0.0 
                     IOFPGA                     YES     0.15      0.15      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-18DD-SE         Bootloader                 YES     1.01      1.01      0.0 
                     DBFPGA                     YES     0.14      0.14      0.0 
                     IOFPGA                     YES     0.01      0.01      0.0 
--------------------------------------------------------------------------------
NC55-18H18F          Bootloader                 YES     1.14      1.14      0.0 
                     IOFPGA                     YES     0.22      0.22      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-24DD            Bootloader                 YES     1.01      1.01      0.0 
                     DBFPGA                     YES     0.14      0.14      0.0 
                     IOFPGA                     YES     0.25      0.25      0.0 
--------------------------------------------------------------------------------
NC55-24H12F-SE       Bootloader                 YES     1.14      1.14      0.0 
                     IOFPGA                     YES     0.09      0.09      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-24X100G-SE      Bootloader                 YES     1.14      1.14      0.0 
                     IOFPGA                     YES     0.13      0.13      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-36X100G         Bootloader                 YES     1.19      1.19      0.0 
                     IOFPGA                     YES     0.15      0.15      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-36X100G-A-SE    Bootloader                 YES     0.14      0.14      0.0 
                     DBFPGA                     YES     0.14      0.14      0.0 
                     IOFPGA                     YES     0.21      0.21      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-36X100G-S       Bootloader                 YES     1.14      1.14      0.0 
                     IOFPGA                     YES     0.11      0.11      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-5504-FC         Bootloader                 YES     1.75      1.75      0.0 
                     IOFPGA                     YES     0.07      0.07      0.0 
--------------------------------------------------------------------------------
NC55-5508-FC         Bootloader                 YES     1.74      1.74      0.0 
                     IOFPGA                     YES     0.16      0.16      0.0 
--------------------------------------------------------------------------------
NC55-5508-FC2        Bootloader                 YES     1.80      1.80      0.0 
                     IOFPGA                     YES     0.12      0.12      0.0 
--------------------------------------------------------------------------------
NC55-5516-FC         Bootloader                 YES     1.75      1.75      0.0 
                     IOFPGA                     YES     0.23      0.23      0.0 
--------------------------------------------------------------------------------
NC55-5516-FC2        Bootloader                 YES     1.80      1.80      0.0 
                     IOFPGA                     YES     0.17      0.17      0.0 
--------------------------------------------------------------------------------
NC55-6X100GE-PROT    Bootloader                 YES     1.19      1.19      0.0 
                     IOFPGA                     YES     0.15      0.15      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-6X200-DWDM-S    Bootloader                 YES     1.14      1.14      0.0 
                     IOFPGA                     YES     0.11      0.11      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-MOD-A-S         Bootloader                 YES     1.02      1.02      0.0 
                     DBFPGA                     YES     0.14      0.14      0.0 
                     IOFPGA                     YES     0.05      0.05      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-MOD-A-SE-S      Bootloader                 YES     1.02      1.02      0.0 
                     DBFPGA                     YES     0.14      0.14      0.0 
                     IOFPGA                     YES     0.05      0.05      0.0 
                     SATA                       NO      5.00      5.00      0.0 
--------------------------------------------------------------------------------
NC55-PWR-3KW-2HV     DT-LogicMCU                NO      3.01      3.01      0.2 
                     DT-PriMCU                  NO      3.00      3.00      0.2 
                     DT-SecMCU                  NO      3.01      3.01      0.2 
--------------------------------------------------------------------------------
NC55-PWR-3KW-DC      DT-SecMCU                  NO      4.11      4.11      0.1 
--------------------------------------------------------------------------------
NC55-RP              Bootloader                 YES     9.30      9.30      0.0 
                     IOFPGA                     YES     0.09      0.09      0.0 
                     SATA                       NO      6.00      6.00      0.0 
--------------------------------------------------------------------------------
NC55-RP-E            Bootloader                 YES     1.21      1.21      0.0 
                     IOFPGA                     YES     0.23      0.23      0.0 
                     OMGFPGA                    YES     0.48      0.48      0.0 
                     SATA                       NO      6.00      6.00      0.0 
--------------------------------------------------------------------------------
NC55-RP-PROTO        Bootloader                 YES     9.30      9.30      0.0 
                     IOFPGA                     YES     0.06      0.06      0.0 
                     SATA                       NO      6.00      6.00      0.0 
--------------------------------------------------------------------------------
NC55-SC              Bootloader                 YES     1.74      1.74      0.0 
                     IOFPGA                     YES     0.10      0.10      0.0 
--------------------------------------------------------------------------------

Note

The FPD versions on board shipped by manufacturer may have higher versions than the FPD package integrated in the IOS XR.


Other Important Information

  • The total number of bridge-domains (2*BDs) and GRE tunnels put together should not exceed 1518.

    Here the number 1518 represents the multi-dimensional scale value.

  • The offline diagnostics functionality is not supported in NCS 5500 platform. Therefore, the hw-module service offline location command will not work. However, you can use the (sysadmin)# hw-module shutdown location command to bring down the LC.

Supported Modular Port Adapters

For the compatibility details of Modular Port Adapters (MPAs) on the line cards, see the datasheet of that specific line card.

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).

Before starting the software upgrade, use the show install health command in the admin mode. This command validates if the statuses of all relevant parameters of the system are ready for the software upgrade without interrupting the system.

Related Documentation

The most current Cisco Network Convergence System 5500 Series documentation is located at this URL:

http://www.cisco.com/c/en/us/support/routers/network-convergence-system-5500-series/tsd-products-support-series-home.html

The document containing Cisco IOS XR System Error Messages (SEM) is located at this URL:

https://www.cisco.com/c/en/us/td/docs/ios_xr_sw/error/message/ios-xr-sem-guide.html

Production Software Maintenance Updates (SMUs)

A production SMU is a SMU that is formally requested, developed, tested, and released. Production SMUs are intended for use in a live network environment and are formally supported by the Cisco TAC and the relevant development teams. Software bugs identified through software recommendations or Bug Search Tools are not a basis for production SMU requests.

For information on production SMU types, refer the Production SMU Types section of the IOS XR Software Maintenance Updates (SMUs) guide.

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Cisco Bug Search Tool

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