What's New in Cisco IOS XR Release 7.5.1
| Feature | Description |
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Hardware |
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1G Mode Support on A900-IMA8Z-L Interface Module for Cisco NCS 560-4 and N560-7 Routers |
Effective Cisco IOS XR Release 7.5.1, 1G mode is supported on A900-IMA8Z-L interface module. Use the following command to configure A900-IMA8Z-L interface module in 1G mode:
For more information, information on the interface module slot and 1G mode support combinations on Cisco NCS 560-4 and Cisco NCS 560-7 routers, see Cisco N560-RSP4 and Cisco N560-RSP4-E Route Processor Hardware Installation Guide and Cisco NCS 560-4 Router Hardware Installation Guide. |
| Feature | Description |
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Modular QoS |
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Egress CoS marking (IP-to-IP) on Layer3 subinterface and BVI |
Egress CoS marking (IP-to-IP) on Layer 3 subinterfaces is now supported on BVI interfaces. |
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Routing |
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The Bidirectional Forwarding detection (BFD) Hardware Offload feature enables the offload of a BFD session in an IPv6 network. With this feature, each bundle member link with IPv6 address runs its own BFD session This feature improves scale and reduces the overall network convergence time by sending rapid failure detection packets to the routing protocols for recalculating the routing table. |
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BFD can be configured on Bridge group Virtual Interface (BVI). BVI is a virtual interface within the router that acts like a normal routed interface that does not support bridging but represents the bridge group for the bridged physical interfaces. BFD detects the Layer3 fault over the BVI much quicker and inform the same to routing protocols. |
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The Cisco NCS 560 Router supports 1000 router nodes per IGP domain. Use the show isis topology summary command to view the router nodes. |
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System Security |
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This feature allows locally authenticated users on the router to execute commands even if a remote TACACS+ AAA server is not reachable for authorization. This functionality thereby prevents a complete lockdown of the router that occurred in scenarios where the TACACS+ server was not reachable. The feature also prevents remotely authenticated users from executing any nonpermitted command on the router, thereby preventing any sort of misuse of user privileges on the router. This feature modifies the aaa authorization commands default command. |
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Segment Routing |
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This feature introduces support for iBGP as PE-CE protocol. |
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This feature adds support for importing routes from default-VRF to non-default VRF and routes from non-default VRF to default VRF. |
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This feature provides the ability to assign a specific SRv6 locator for a given set of prefixes (IPv4/IPv6 GRT, IPv4/IPv6 VPN). The egress PE advertises prefixes with the locator associated with the desired behavior, such as Flex Algo. |
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With this feature, support for a single PCE is enhanced to 50000 nodes, 100000 LSPs, 500000 links and 2000 PCEP sessions. |
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The SR-PCE provides a north-bound HTTP-based API to allow communication between SR-PCE and external clients and applications. The Cisco Crosswork Optimization Engine is an application that leverages the SR-PCE. This release adds support for the following:
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This feature extends the current OSPF Flexible Algorithm functionality to support Flex-Algo Prefix Metric. This feature introduces a Flexible Algorithm-specific prefix-metric in the OSPF prefix advertisement. The prefix-metric provides a way to compute the best end-to-end Flexible Algorithm optimized paths across multiple areas or domains. |
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This feature allows the Flexible Algorithm definition to specify Shared Risk Link Groups (SRLGs) that the operator wants to exclude during the Flex-Algorithm path computation. This allows the setup of disjoint paths between two or more Flex Algos by leveraging deployed SRLG configurations. |
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Multicast |
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This feature gives you the flexibility to customize the metrics that IGP uses to route traffic for MLDP tunnels. With this feature, your router can generate two multicast streams for the same feed, thus ensuring low latency and high availability of multicast traffic. This feature introduces the flex-algo keyword. |
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System Setup and Software Installation |
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You can determine whether a software version can be upgraded or downgraded to another version using this functionality. Before an actual upgrade or downgrade process, you can also view the hardware or software limitations that could cause the upgrade or downgrade to fail. This feature helps you plan successful software upgrades or downgrades. This feature introduces the show install upgrade-matrix command. |
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Interfaces and Hardware |
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This feature enables high availability between two bridged interfaces by disabling both interfaces if any one of them fails. This functionality allows a fault detected on one side of a CFM-protected network to propagate to the other side, enabling the device to re-route around the failure at that end. In earlier releases, a failure on one bridged interface did not disable the other interface, and connected devices remained unaware of the link loss. |
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| Feature | Description |
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L2VPN |
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For Traffic Engineering, VPLS traffic can be sent using MPLS-TE with RSVP or SR-TE. Resource Reservation Protocol (RSVP) is a signaling protocol that enables systems to request resource reservations from the network. MPLS Traffic Engineering (MPLS-TE) learns the topology and resources available in a network and then maps traffic flows to particular paths, based on resource requirements and network resources such as bandwidth. MPLS-TE uses RSVP to signal LSPs. Segment routing for traffic engineering (SR-TE) uses a “policy” to steer traffic through the network. |
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Network Synchronization |
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PTP Multi-profile support - NCS560 |
PTP multi-profile is now supported on the Cisco NCS 560 routers. |
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GNSS Redundancy - Frequency Mgr Sync on NCS560 |
GNSS can now be configured on both, the active and standby route processors (RP). |
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Modular QoS |
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Layer 2 Ingress QoS Matching for IPv4 and IPv6 Destination Addresses |
Using this feature, you can match class maps to IPv4 and IPv6 destination addresses on Layer 2 networks. The Layer 2 interface service policy has the relevant class maps, actioning them for ingress QoS operations. This feature provides you with an additional level of classification for aggregated customer traffic at your ingress, thus giving you granular control on traffic flows. This feature introduces the following commands: |
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Prioritization of IS-IS and ARP Packets to Manage Transit Traffic |
This feature gives you the option to assign the highest priority to Integrated Intermediate System-to-Intermediate System (IS-IS) and Address Resolution Protocol (ARP) packets in transit. This feature is disabled by default. The feature provides more flexibility in transit traffic management on a per-hop basis and also fine-tunes the traffic profile management for transit traffic. This feature introduces the hw-module profile qos arp-isis-priority-enable command. |
Restrictions and Limitations on the Cisco NCS 560 Series Router
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The standby RP may get into '
NOT READY' state intermittently due to some network churn, though the corresponding VM is up and running. But this is a transient state and shows that some data aren’t in sync between active and standby due to the network churn. After both active and standby are in sync with respect to all the parameters, then the standby RP comes into 'READY' state. -
Unlabeled BGP PIC EDGE for global prefixes is not supported.
Cisco IOS XR Caveats Release 7.5.1
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Bug ID |
Headline |
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BFD sessions in DOWN state remain in standby RP due to congestion, after peer reload |
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fia_driver and imfpga Coredumps seen following OIR NCS560 IM |
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Kernel panic after reloading the router with "admin reload rack 0" |
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Alarm status is None in show controller optics <interface> o/p when remote interface admin down |
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Commit replace failed with message " 'OSPFV3' detected the 'resource not available' condition" |
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Login banner text is missing on Cisco-IOS-XR-um-banner-cfg when text exceeds 1015 characters |
Supported Packages and System Requirements
For more information on system upgrade and package installation process, see Perform System Upgrade and Install Feature Packages.
For a complete list of supported optics, hardware and ordering information, see the Cisco NCS 560 Series Routers Interface Modules Data Sheet and Cisco Network Convergence System 560-4 Router Data Sheet.
To install the Cisco NCS 560 Series Routers, see Cisco N560-RSP4 and Cisco N560-RSP4-E Route Processor Hardware Installation Guide and Cisco NCS 560-4 Router Hardware Installation Guide.
Release 7.5.1 Packages
This following table lists the supported packages and their corresponding file names.
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Composite Package |
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Feature Set |
Filename |
Description |
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Cisco IOS XR IP Unicast Routing Core Bundle |
ncs560-mini-x-7.5.1.iso |
Contains base image contents that includes:
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Cisco IOS XR Manageability Package |
ncs560-mgbl-2.0.0.0-r751.x86_64.rpm |
Telemetry, Extensible Markup Language (XML), Parser, and HTTP server packages, NETCONF, YANG Models, gRPC. |
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Cisco IOS XR OSPF package |
ncs560-ospf-2.0.0.0-r751.x86_64.rpm |
Supports OSPF |
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Cisco IOS XR Security Package |
ncs560-k9sec-2.0.0.0-r751.x86_64.rpm |
Support for Encryption, Decryption, Secure Shell (SSH), Secure Socket Layer (SSL), and Public-key infrastructure (PKI) |
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Multicast Package |
ncs560-mcast-2.0.0.0-r751.x86_64.rpm |
Supports Multicast Supports Automatic Multicast Tunneling (AMT), IGMP Multicast Listener Discovery (MLD), Multicast Label Distribution Protocol (MLDP), Multicast Source Discovery Protocol (MSDP) and PIM. |
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Cisco IOS XR ISIS package |
ncs560-isis-2.0.0.0-r751.x86_64.rpm |
Supports Intermediate System to Intermediate System (IS-IS). |
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Cisco IOS XR USB Boot Package |
ncs560-usb_boot-7.5.1.zip |
Supports Cisco IOS XR USB Boot Package |
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Cisco IOS XR MPLS Package |
ncs560-mpls-1.0.0.0-r751.x86_64.rpm ncs560-mpls-te-rsvp-2.0.0.0-r751.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). |
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Cisco IOS XR LI Package |
ncs560-li-1.0.0.0-r751.x86_64.rpm |
Lawful Intercept |
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Cisco IOS XR EIGRP Package |
ncs560-eigrp-1.0.0.0-r751.x86_64.rpm |
(Optional) Includes EIGRP protocol support software |
Determine Software Version
Log in to the router and enter the show version command.
RP/0/RP0/CPU0:R3_PE3_RSP4#show version
Mon Nov 29 12:39:22.793 PST
Cisco IOS XR Software, Version 7.5.1
Copyright (c) 2013-2021 by Cisco Systems, Inc.
Build Information:
Built By : ingunawa
Built On : Sun Nov 28 10:31:58 PST 2021
Built Host : iox-ucs-054
Workspace : /auto/srcarchive15/prod/7.5.1/ncs560/ws
Version : 7.5.1
Location : /opt/cisco/XR/packages/
Label : 7.5.1
cisco NCS-560 () processor
System uptime is 7 minutes
Determine Firmware Support
Log in to the router and enter the show hw-module fpd command.
RP/0/RP0/CPU0:R3_PE3_RSP4#show hw-module fpd
Mon Nov 29 12:39:25.461 PST
Auto-upgrade:Enabled
FPD Versions
==============
Location Card type HWver FPD device ATR Status Running Programd
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0/2 A900-IMA8Z 0.0 IMFPGA CURRENT 17.05 17.05
0/11 A900-IMA8Z 0.0 IMFPGA CURRENT 17.05 17.05
0/12 A900-IMA8Z 0.0 IMFPGA CURRENT 17.05 17.05
0/RP0 N560-RSP4-E 0.0 ADM CURRENT 1.06 1.06
0/RP0 N560-RSP4-E 0.0 IOFPGA CURRENT 0.67 0.67
0/RP0 N560-RSP4-E 0.0 PRIMARY-BIOS CURRENT 0.21 0.21
0/RP0 N560-RSP4-E 0.0 SATA CURRENT 2.10 2.10
0/RP1 N560-RSP4-E 0.0 ADM CURRENT 1.06 1.06
0/RP1 N560-RSP4-E 0.0 IOFPGA CURRENT 0.67 0.67
0/RP1 N560-RSP4-E 0.0 PRIMARY-BIOS CURRENT 0.21 0.21
0/RP1 N560-RSP4-E 0.0 SATA CURRENT 2.10 2.10
0/FT0 N560-FAN-H 1.0 PSOC CURRENT 2.02 2.02
Important Information
Supported Transceiver Modules
For more information on the supported transceiver modules, see Transceiver Module Group (TMG) Compatibility Matrix. In the Begin your Search search box, enter the keyword NCS560 and click Enter.
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 for Cisco NCS 560 router is available along with the software image in NCS560_Upgrade_MOP_7.5.1.tar file.
Use user-class Option 'xr-config' Instead Of 'exr-config' To Provision ZTP
In Cisco IOS XR Release 7.3.1 and earlier, the system accepts the device sending user-class = "exr-config"; however starting Cisco IOS XR Release 7.3.2 and later, you must use only user-class = "xr-config".
In Cisco IOS XR Release 7.3.2 and later, use:
host cisco-rp0 {
hardware ethernet e4:c7:22:be:10:ba;
fixed-address 172.30.12.54;
if exists user-class and option user-class = "iPXE" {
filename = "http://172.30.0.22/boot.ipxe";
} elsif exists user-class and option user-class = "xr-config" {
filename = "http://172.30.0.22/scripts/cisco-rp0_ztp.sh";
}
}Additional References
Supported MIBs
The Cisco NCS 5500 MIB support list is also applicable to the Cisco NCS 560 Series Routers. For the list of supported MIBs, see the Cisco NCS5500 MIB Support List.
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