What's New in Cisco IOS XR Release 7.9.1
Cisco IOS XR Release 7.9.1 is a new feature release for Cisco NCS 560 Series routers. For more details on the Cisco IOS XR release model and associated support, see Guidelines for Cisco IOS XR Software.
New in Documentation
This release introduces rich and intuitive ways for you to access YANG data models supported in the Cisco IOS XR software.
| Product | Description |
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Search by release number, error strings, or compare release numbers to view a detailed repository of error messages and descriptions. |
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Select the MIB of your choice from a drop-down to explore an extensive repository of MIB information. |
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| YANG Data Models Navigator |
We have launched the tool as an easy reference to view the Data Models (Native, Unified, OpenConfig) supported in IOS XR platforms and releases. You can explore the data model definitions, locate a specific model, and view the containers and their respective lists, leaves, leaf lists, Xpaths, and much more. As we continue to enhance the tool, we would love to hear your feedback. You are welcome to drop us a note here. |
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Use Case-based Documentation at Learning Labs |
You can now quickly explore and experiment on use-cases without setting up any hardware resources with the new Interactive documentation for Cisco 8000 routers on DevNet Learning Labs. Powered by Jupyter, the automated code blocks within the documentation enable you to configure the desired functionality on the routers and retrieve real-time output swiftly. Check out the new interactive documentation here: |
Software Features Enhanced and Introduced
To learn about features introduced in other Cisco IOS XR releases, select the release from the Documentation Landing Page.
| Feature | Description |
|---|---|
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Segment Routing |
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This feature enables an SRv6 headend node to receive and install remote SIDs with Wide (32-bit) functions (Remote W-LIB). The Remote W-LIB is supported for Layer 3 (VPN/BGP global) and Layer 2 EVPN services (ELINE/ELAN). This capability is enabled by default. |
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SR-TE Explicit Segment Lists with Mix of IPv4 and IPv6 Segments |
Explicit segment list can be configured to include IPv6 segments, for example IPv6 adjacency SIDs or IPv6 EPE SIDs. This feature enables use-cases such as Centralized BGP EPE for 6PE in an SR-MPLS Network. |
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This feature allows traffic to a BGP service route to be steered over an SR-TE policy using the AS principles, and without imposing the service route’s prefix label. This feature enables use-cases such as centralized BGP EPE for 6PE in an SR-MPLS network. This feature introduces the following command:
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Interface and Hardware Component |
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With this release, transmitting (Tx) VLAN-tagged LLDP packets on the subinterface is supported. This feature helps to identify unauthorized devices on the network and discover VLANs configured on the network devices. Use the following commands to enable transmission of tagged LLDP packets globally or on each subinterface:
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Network Synchronization |
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You can now select the best available timing source for your routers by using the PTP Virtual Port feature. This feature allows you to compare, select, and advertise the best clock source between a PTP server and other local timing sources connected to the routers. Vitual Port is an external frequency, phase, and time input interface on a Telecom Boundary Clock (T-BC), and thus participates in the timing source selection. |
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Assisted Partial Timing Support (APTS) enables you to select timing and synchronization for mobile backhaul networks. APTS allows for proper distribution of phase and time synchronization in the network. |
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L2VPN and Ethernet Services |
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Call Admission Control for L2VPN P2P Services over Circuit-Style SR-TE Policies |
This feature allows you to configure guaranteed bandwidth for Layer 2 P2P services steered over Circuit-Style SR-TE policies. This ensures that a Circuit-Style SR-TE policy has sufficient bandwidth to accommodate a Layer 2 P2P service, while also preventing a L2 P2P service from being steered over a Circuit-Style SR-TE policy when there is insufficient available bandwidth. |
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Modular QoS |
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You can prevent malicious users from staging denial of service (DoS) attacks for non-initial IP by configuring an ACL with fragment match and specifying QoS match actions to rate-limit non-initial fragments for IPv4 traffic. |
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System Management |
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GNSS MIBs Traps support |
Global Navigation Satellite System (GNSS) is the satellite system which is used as a timing interface. GNSS receiver picks up signals from this satellite system to recalculate position, velocity and local time to high precision. From this release, you can track GNSS module antenna OC alarm status, status of the GNSS satellite visibility (good or bad), and specify the lock status of GNSS module. This release adds the support for the traps:
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Routing |
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The nonself-generated link-state advertisements (LSAs) for a given Open Shortest Path First (OSPF) process is limited to 500000. This protection mechanism prevents routers from receiving many LSAs, preventing CPU failure and memory shortages, and is enabled by default from this release onwards. If you have over 500000 LSAs in your network, configure the max-lsacommand with the expected LSA scale before upgrading to this release or later This feature modifies the following commands:
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Limiting the Maximum Redistributed Type-3 LSA Prefixes in OSPF |
By default, the maximum redistributed Type-3 LSA prefixes for a given OSPF process is now limited to 100000. This mechanism prevents OSPF from redistributing a large number of prefixes as Type-3 LSAs and therefore preventing high CPU utilization and memory shortages. Once the number of redistributed prefixes is reached or exceeds the threshold value, the system log message is generated, and no more prefixes are redistributed. |
Hardware Introduced
 Note |
Before you install the Cisco router, you must prepare your site for the installation, for more details on site planning and environmental requirements, see Hardware Installation Guide. |
There are no new hardware features introduced in this release.
Behavior Changes
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Prior to Cisco IOS XR Release 7.2.1, a segment of an explicit segment list can be configured as an IPv4 address (representing a Node or a Link) using the index indexaddress ipv4 address command.
Starting with Cisco IOS XR Release 7.2.1, an IPv4-based segment (representing a Node or a Link) can also be configured with the new index index mpls adjacencyaddress command. The configuration is stored in NVRAM in the same CLI format used to create it. There is no conversion from the old CLI to the new CLI.
Starting with Cisco IOS XR Release 7.9.1, the old CLI has been deprecated. Old configurations stored in NVRAM will be rejected at boot-up.
As a result, explicit segment lists with IPv4-based segments using the old CLI must be re-configured using the new CLI.
There are no CLI changes for segments configured as MPLS labels using the index index mpls label label command.
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If you are on a release before Cisco IOS XR Release 7.4.1, you can configure SR-ODN with Flexible Algorithm constraints using the segment-routing traffic-eng on-demand color color dynamic sid-algorithm algorithm-number command.
Starting with Cisco IOS XR Release 7.4.1, you can also configure SR-ODN with Flexible Algorithm constraints using the new segment-routing traffic-eng on-demand color color constraints segments sid-algorithm algorithm-number command.
From Cisco IOS XR Release 7.9.1, the segment-routing traffic-eng on-demand color color dynamic sid-algorithm algorithm-number command is deprecated. Previous configurations stored in NVRAM will be rejected at boot-up. (Performing In-Service Software Upgrade (ISSU) to Cisco IOS XR Release 7.9.1 will also be rejected.)
Hence, for Cisco IOS XR Release 7.9.1, you must reconfigure all SR-ODN configurations with Flexible Algorithm constraints that use the on-demand dynamic sid-algorithm with the on-demand constraints command.
Restrictions and Limitations
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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.
Caveats
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Bug ID |
Headline |
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BVI 2-pass: MTU fragmentation is not working for L3-L2 BVI traffic |
Release Package
This following table lists the Cisco IOS XR Software feature set matrix (packages) with associated filenames.
Visit the Cisco Software Download page to download the Cisco IOS XR software images.
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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-7.9.1.iso |
Contains base image contents that includes:
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Cisco IOS XR Manageability Package |
ncs560-mgbl-1.0.0.0-r791.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-1.0.0.0-r791.x86_64.rpm |
Supports OSPF |
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Cisco IOS XR Security Package |
ncs560-k9sec-1.0.0.0-r791.x86_64.rpm |
k9sec is needed for IPsec or MACsec and Dot1x and for basic crypto services such as Decryption, Secure Shell (SSH), Secure Socket Layer (SSL), and Public-key infrastructure (PKI). |
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Multicast Package |
ncs560-mcast-1.0.0.0-r791.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-1.0.0.0-r791.x86_64.rpm |
Supports Intermediate System to Intermediate System (IS-IS). |
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Cisco IOS XR USB Boot Package |
ncs560-usb_boot-7.9.1.zip |
Supports Cisco IOS XR USB Boot Package |
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Cisco IOS XR MPLS Package |
ncs560-mpls-1.0.0.0-r791.x86_64.rpm ncs560-mpls-te-rsvp-1.0.0.0-r791.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-r791.x86_64.rpm |
Lawful Intercept |
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Cisco IOS XR EIGRP Package |
ncs560-eigrp-1.0.0.0-r791.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:Router#show version
Cisco IOS XR Software, Version 7.9.1
Copyright (c) 2013-2023 by Cisco Systems, Inc.
Build Information:
Built By : ingunawa
Built On : Sun Apr 2 01:12:58 PDT 2023
Built Host : iox-ucs-046
Workspace : /auto/srcarchive15/prod/7.9.1/ncs560/ws
Version : 7.9.1
Location : /opt/cisco/XR/packages/
Label : 7.9.1
cisco NCS-560 () processor
System uptime is 9 hours 36 minutes
Determine Firmware Support
Log in to the router and enter the show fpd package command to know the release image.
RP/0/RP0/CPU0:Router#show fpd package
=============================== ================================================
Field Programmable Device Package
================================================
Req SW Min Req Min Req
Card Type FPD Description Reload Ver SW Ver Board Ver
=================== ========================== ====== ======= ======== =========
--------------------------------------------------------------------------------
A900-IMA-8Z-L-CC IMFPGA YES 1.50 1.50 0.0
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A900-IMA8CS1Z-CC IMFPGA YES 1.113 1.113 0.0
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A900-IMA8CS1Z-M IMFPGA YES 1.113 1.113 0.0
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A900-IMA8Z IMFPGA YES 17.05 17.05 0.0
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A900-IMA8Z-CC IMFPGA YES 17.05 17.05 0.0
--------------------------------------------------------------------------------
A900-IMA8Z-L IMFPGA YES 1.50 1.50 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
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A900-PWR1200-D LIT-PriMCU(A) NO 2.04 0.04 0.0
LIT-SecMCU(A) NO 1.27 1.27 0.0
--------------------------------------------------------------------------------
A907-FAN-E PSOC(A) NO 1.65 1.65 0.0
PSOC(A) NO 1.66 1.66 0.4
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A907-FAN-H PSOC(A) NO 1.65 1.65 0.0
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N560-4-FAN-H PSOC(A) NO 177.02 177.02 0.0
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N560-4-FAN-H-CC PSOC(A) NO 177.02 177.02 0.0
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N560-4-FAN-H-R PSOC(A) NO 177.02 177.02 0.0
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N560-4-PWR-FAN PSOC(A) NO 177.08 177.08 0.0
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N560-4-PWR-FAN-CC PSOC(A) NO 177.08 177.08 0.0
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N560-4-PWR-FAN-R PSOC(A) NO 177.08 177.08 0.0
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N560-4-RSP4 ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.67 0.67 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
--------------------------------------------------------------------------------
N560-4-RSP4-CC ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.67 0.67 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
--------------------------------------------------------------------------------
N560-4-RSP4E ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.67 0.67 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
--------------------------------------------------------------------------------
N560-4-RSP4E-CC ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.67 0.67 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
--------------------------------------------------------------------------------
N560-FAN-H PSOC(A) NO 2.02 2.02 0.0
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N560-IMA-8Q/4L IMFPGA YES 1.27 1.27 0.0
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N560-IMA1W CFP2-D-DCO NO 38.27397 38.27397 0.0
CFP2-DE-DCO NO 38.27397 38.27397 0.0
CFP2-DET-DCO NO 38.27397 38.27397 0.0
CFP2-DETS-DCO NO 38.27397 38.27397 0.0
CFP2-DS-DCO NO 38.27397 38.27397 0.0
CFP2-DS100-DCO NO 38.27397 38.27397 0.0
IMFPGA YES 1.28 1.28 0.0
--------------------------------------------------------------------------------
N560-IMA2C IMFPGA YES 6.06 6.06 0.0
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N560-IMA2C-CC IMFPGA YES 6.06 6.06 0.0
--------------------------------------------------------------------------------
N560-IMA2C-DD IMFPGA YES 1.28 1.28 0.0
QDD_100_FW_P0 NO 61.23 61.23 0.0
QDD_100_FW_P1 NO 61.23 61.23 0.0
--------------------------------------------------------------------------------
N560-IMA2C-L IMFPGA YES 1.28 1.28 0.0
--------------------------------------------------------------------------------
N560-PWR1200-D-E QCS-PriMCU(A) NO 1.82 1.82 0.0
QCS-SecMCU(A) NO 1.84 1.84 0.0
--------------------------------------------------------------------------------
N560-RSP4 ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.78 0.78 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
--------------------------------------------------------------------------------
N560-RSP4-E ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.78 0.78 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
--------------------------------------------------------------------------------
NCS4200-1T16G-PS IMFPGA YES 1.113 1.113 0.0
--------------------------------------------------------------------------------
NCS4200-2H-PQ IMFPGA YES 6.06 6.06 0.0
--------------------------------------------------------------------------------
NCS4200-8T-PS IMFPGA YES 17.05 17.05 0.0
--------------------------------------------------------------------------------
NCS4216-F2B-FAN PSOC(A) NO 44.08 44.08 0.0
--------------------------------------------------------------------------------
NCS4216-RSP-800 ADM(A) NO 1.06 1.06 0.0
IOFPGA(A) YES 0.01 0.01 0.0
PRIMARY-BIOS(A) YES 0.21 0.21 0.0
SATA(A) NO 2.10 2.10 0.0
SATA_MAR(A) NO 1.30 1.30 0.0
Log in to the router and enter the show hw-module fpd command to know the current version.
RP/0/RP0/CPU0:Router#show hw-module fpd
Auto-upgrade:Enabled
FPD Versions
==============
Location Card type HWver FPD device ATR Status Running Programd
-----------------------------------------------------------------------------------------
0/2 A900-IMA8CS1Z-M 0.0 IMFPGA CURRENT 1.113 1.113
0/4 A900-IMA8CS1Z-M 0.0 IMFPGA CURRENT 1.113 1.113
0/5 N560-IMA-8Q/4L 0.0 IMFPGA CURRENT 1.27 1.27
0/7 N560-IMA2C 0.0 IMFPGA CURRENT 6.06 6.06
0/9 N560-IMA-8Q/4L 0.0 IMFPGA CURRENT 1.27 1.27
0/10 A900-IMA8Z-L 0.0 IMFPGA CURRENT 1.50 1.50
0/11 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 0.78 0.78
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 0.78 0.78
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 A907-FAN-E 1.0 PSOC CURRENT 1.65 1.65
0/PM0 A900-PWR1200-A 0.1 DCA-PriMCU CURRENT 0.13 0.13
0/PM0 A900-PWR1200-A 0.1 DCA-SecMCU CURRENT 2.03 2.03
0/PM1 A900-PWR1200-A 0.1 DCA-PriMCU CURRENT 0.13 0.13
0/PM1 A900-PWR1200-A 0.1 DCA-SecMCU CURRENT 2.03 2.03
Important Notes
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_7.9.1.tar file.
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.
Cisco IOS XR Error messages
To view, search, compare, and download Cisco IOS XR Error Messages, refer to the Cisco IOS XR Error messages tool.
Cisco IOS XR MIBs
To determine the MIBs supported by platform and release, refer to the Cisco IOS XR MIBs tool.
Related Documentation
The most current Cisco NCS 560 router documentation is located at the following URL:
https://www.cisco.com/c/en/us/td/docs/iosxr/ncs-560-series-routers.html
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