Release Notes for Cisco 8000 Series Routers, IOS XR Release 25.1.2

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Updated:July 3, 2025

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Updated:July 3, 2025
 
 
 
 

 

Cisco 8000 Series Routers, Release 25.1.2. 3

New software features. 3

New hardware. 3

Changes in behavior 3

Open issues. 3

Known issues. 3

Supported hardware. 5

Supported software packages. 8

Related resources. 9

Legal information. 10

 


 

Cisco 8000 Series Routers, Release 25.1.2

Cisco IOS XR Release 25.1.2 is an extended maintenance release of Cisco IOS XR Release 25.1.1 for Cisco 8000 Series routers. There are no new software features or hardware introduced in this release.

For more details on the Cisco IOS XR release model and associated support, see Software Lifecycle Support Statement - IOS XR.

New software features

There is no new software features introduced in this release.

New hardware

There is no new hardware introduced in this release.

Changes in behavior

There are no changes in behavior.

Open issues

Table 1.                 Open issues for Cisco 8000 Series Routers, Release 25.1.2

Bug ID

Description

CSCwo87643

[8011-4G24Y4H-I] QoS configuration fails after deleting interfaces and performing rollback

CSCwo87652

[8011-4G24Y4H-I] Flowspec IPv6 policer fails to function correctly after interface deletion and rollback

Known issues

There are no known issues in this release.

Compatibility Matrix for EPNM and Crosswork with Cisco IOS XR Software

The compatibility matrix lists the version of EPNM and Crosswork that are supported with Cisco IOS XR software in this release.

Table 2.                 Compatibility matrix for Cisco 8000 Series Routers, Release 25.1.2

Upgrade and downgrade paths

To view all supported Cisco IOS XR Software upgrades from the current version according to the support data installed on the running system, enter the show install upgrade-matrix running command:

Router# show install upgrade-matrix running

Matrix: XR version: 25.1.2, File version: 1.0, Version: N/A

 

The upgrade matrix indicates that the following system upgrades are supported from the current XR version:

 

From       To         Restrictions

---------- ---------- ------------

25.1.2     24.1.1     -          

25.1.2     24.1.2     -          

25.1.2     24.2.11    -          

25.1.2     24.2.2     -          

25.1.2     24.2.21    -          

25.1.2     24.3.1     -          

25.1.2     24.3.2     -          

25.1.2     24.3.20    -          

25.1.2     24.4.1     -          

25.1.2     25.1.1     -          

25.1.2     7.11.2     -          

25.1.2     7.11.21    -          

 

Add the from and to versions to the end of the CLI command, for data on versions with additional restrictions

 

For example, to display restrictions for the 25.1.2->24.1.1 upgrade, use

        'show install upgrade-matrix running 25.1.2 24.1.1'

Software version

Log in to the router and enter the show version command:

RP/0/RP0/CPU0# show version

Cisco IOS XR Software, Version 25.1.2 LNT

Copyright (c) 2013-2025 by Cisco Systems, Inc.

 

Build Information:

 Built By     : cisco

 Built On     : Wed Jul 02 22:34:13 UTC 2025

 Build Host   : iox-ucs-1001

 Workspace    : /auto/srcarchive12/prod/25.1.2/8000-aarch64/ws

 Version      : 25.1.2

 Label        : 25.1.2-iso

 

cisco 8000 (CN9130H board )

cisco 8011-4G24Y4H-I (CN9130H board ) processor with 16GB of memory

Gln_PE1 uptime is 57 minutes

Cisco 8011 Series Fixed 1RU Router 4x100G, 24x1/10/25G, 4xCu

Supported hardware

Table of supported hardware components and the minimum required software versions.

Table 3.                 Supported hardware for Cisco 8010 Series Routers

Part Number

Description

Support Initially Provided in IOS XR Release

Cisco 8010 Series Routers - Chassis

8011-4G24Y4H-I

Cisco 8010 1 RU Fixed System - 4 QSFP28 100GbE, 24 SFP28 25GbE, and 4 RJ-45 100MbE

Release 25.1.1

Cisco 8010 Series Routers – Power Supply Unit (PSU)

PWR-400-AC

Cisco 400W AC Power Module

Release 25.1.1

PWR-400-DC

Cisco 400W DC Power Module

Release 25.1.1

Table 4.                 Supported hardware for Cisco 8200 Series Routers

Part Number

Description

Support Initially Provided in IOS XR Release

Cisco 8200 Series Routers - Chassis

8201-SYS

Cisco 8200 1 RU Fixed System - 24 QSFP56-DD 400GbE and 12 QSFP28 100GbE

Release 7.0.12

8202-SYS

Cisco 8200 2 RU Fixed System - 12 QSFP56-DD 400GbE and 60 QSFP28 100GbE

Release 7.3.1

8201-32FH

Cisco 8200 1 RU Fixed System - 32 QSFP56-DD 400GbE

Release 7.3.15

8201-24H8FH

Cisco 8200 1 RU Fixed System - 8 QSFP56-DD 400GbE and 24 QSFP28 100GbE

Release 7.7.1

8202-32FH-M

Cisco 8200 2 RU Fixed System - 32 QSFP56-DD 400GbE with MACsec

Release 7.5.2

8212-48FH-M

Cisco 8200 2 RU Fixed System - 24 QSFP-DD 800G or 48 QSFP56-DD 400GbE with MACsec

Release 24.3.1

Cisco 8200 Series Routers – Power Supply Unit (PSU)

PSU1.4KW-ACPI

Cisco 1.4KW AC Power Module with Port-side Air Intake

Release 7.0.12

PSU1.4KW-ACPE

Cisco 1.4KW AC Power Module with Port-side Air Exhaust

Release 7.0.12

PSU2KW-ACPI

Cisco 2KW AC Power Module with Port-side Air Intake

Release 7.3.1

PSU2KW-ACPE

Cisco 2KW AC Power Module with Port-side Air Exhaust

Release 7.3.1

PSU3KW-HVPI

Cisco 3KW HV AC/DC Power Supply Unit

Release 7.5.3

Table 5.                 Supported hardware for Cisco 8600 Series Routers

Part Number

Description

Support Initially Provided in IOS XR Release

Cisco 8600 Series Routers - Chassis

8608

Cisco 8600 7 RU Centralized System

Release 7.10.1

Cisco 8600 Series Routers - Modular Port Adapters (MPA)

86-MPA-14H2FH-M

Cisco 8608 MPA - 2 QSFP-DD 400GbE and 14 QSFP / 16 QSFP 100GbE

Release 7.10.1

86-MPA-24Z-M

Cisco 8608 MPA - 24 SFP56 10/25/50 GbE

Release 7.10.1

86-MPA-4FH-M

Cisco 8608 MPA - 4 QSFP-DD 400GbE

Release 7.10.1

Cisco 8600 Series Routers – Power Supply Unit (PSU)

PSU3.2KW-ACPI

Cisco 3.2-kW AC Power Supply Unit

Release 7.10.1

PSU3.2KW-DCPI

Cisco 3.2-kW DC Power Supply Unit

Release 7.10.1

PSU4.3KW-HVPI

Cisco 4.3KW HV AC/DC Power Supply Unit

Release 7.10.1

Table 6.                 Supported hardware for Cisco 8700 Series Routers

Part Number

Description

Support Initially Provided in IOS XR Release

Cisco 8700 Series Routers - Chassis

8711-32FH-M

Cisco 8700 1 RU Fixed System - 16 QSFP-DD800 and 16 QSFP56-DD

Release 24.3.1

8712-MOD-M

Cisco 8700 2 RU Fixed System

Release 24.4.1

Cisco 8700 Series Routers - Modular Port Adapters (MPA)

8K-MPA-4D

Cisco 8712 MPA - 4 QSFP-DD 400GbE

Release 24.4.1

8K-MPA-16H

Cisco 8712 MPA - 16 QSFP-28 100GbE

Release 24.4.1

8K-MPA-16Z2D

Cisco 8712 MPA - 2 QSFP-DD 400GbE, 2 QSFP-DD 200GbE, and 16 SFP 50GbE

Release 24.4.1

8K-MPA-18Z1D

Cisco 8712 MPA - 1 QSFP-DD 400 GbE and 18 zSFP56+ 50GbE

Release 25.1.1

Cisco 8700 Series Routers – Power Supply Unit (PSU)

PSU2KW-ACPI

Cisco 8711-32FH-M PSU – 2KW AC Power Module with Port-side Air Intake

Release 24.3.1

PSU2KW-ACPE

Cisco 8711-32FH-M PSU – 2KW AC Power Module with Port-side Air Exhaust

Release 24.3.1

PSU2KW-DCPI

Cisco 8711-32FH-M PSU – 2KW DC Power Module with Port-side Air Intake

Release 24.3.1

PSU2KW-DCPE

Cisco 8711-32FH-M PSU – 2KW DC Power Module with Port-side Air Exhaust

Release 24.3.1

PSU2KW-DCPI

Cisco 8712-MOD-M PSU – 2KW 48V DC Power Module with Port-side Air Intake

Release 24.4.1

PSU2KW-DCPE

Cisco 8712-MOD-M PSU – 2KW 48V DC Power Module with Port-side Exhaust

Release 24.4.1

PSU2KW-ACPI 

Cisco 8712-MOD-M PSU – 2KW AC Power Module with Port-side Air Intake

Release 24.4.1

PSU2KW-ACPE

Cisco 8712-MOD-M PSU – 2KW AC Power Module with Port-side Exhaust

Release 24.4.1

Table 7.                 Supported hardware for Cisco 8800 Series Routers

Part Number

Description

Support Initially Provided in IOS XR Release

Cisco 8800 Series Routers - Chassis

8804-SYS

Cisco 8800 Modular System - 10 RU with 4 Line Card Slots

Release 7.3.2

8808-SYS

Cisco 8800 Modular System - 16 RU with 8 Line Card Slots

Release 7.0.12

8812-SYS

Cisco 8800 Modular System - 21 RU with 12 Line Card Slots

Release 7.0.12

8818-SYS

Cisco 8800 Modular System - 33 RU with 18 Line Card Slots

Release 7.0.14

Cisco 8800 Series Routers - Route Processors

8800-RP

Cisco 8800 Route Processor - 4 Core

Release 7.0.12

8800-RP2

Cisco 8800 Route Processor - 8 Core

Release 7.11.1

Cisco 8800 Series Routers - Fabric Modules

8808-FC

Cisco 8808 System Fabric Module - Q100-based fabric modules with 14.4T per LC slot

Release 7.0.12

8812-FC

Cisco 8812 System Fabric Module - Q100-based fabric modules with 14.4T per LC slot

Release 7.0.12

8818-FC

Cisco 8818 System Fabric Module - Q100-based fabric modules with 14.4T per LC slot

Release 7.0.14

8808-FC0

Cisco 8808 System Fabric Module - Q200-based fabric modules with 14.4T per LC slot

Release 7.3.15

8818-FC0

Cisco 8818 System Fabric Module - Q200-based fabric modules with 14.4T per LC slot

Release 7.3.16

8804-FC0

Cisco 8804 System Fabric Module - Q200-based fabric modules with 14.4T per LC slot

Release 7.3.16

8808-FC1

Cisco 8808 System Fabric Module - F100-based fabric modules with 28.8T per LC slot

Release 24.2.1

8804-FC1

Cisco 8804 System Fabric Module - F100-based fabric modules with 28.8T per LC slot

Release 25.1.1

Cisco 8800 Series Routers - Line Cards

8800-LC-48H

Cisco 8800 Line Card with MACsec - Q100 ASIC based 4.8 Tbps line card

Release 7.0.12

8800-LC-36FH

Cisco 8800 Line Card - Q100 ASIC based 14.4 Tbps line card

Release 7.0.12

88-LC0-36FH

Cisco 8800 Line Card - Q200 ASIC based 14.4 Tbps line card

Release 7.3.15

88-LC0-36FH-M

Cisco 8800 Line Card with MACsec- Q200 ASIC based 14.4 Tbps line card

Release 7.3.15

88-LC0-34H14FH

Cisco 8800 Line Card - Q200 ASIC based 9 Tbps line card

Release 7.3.3
Release 7.5.1

88-LC1-36EH

Cisco 8800 Line Card - P100 ASIC based 28.8 Tbps line card

Release 24.2.11

88-LC1-12TH24FH-E

Cisco 8800 Line Card - P100 ASIC based 12 Tbps line card

Release 24.3.1

88-LC1-52Y8H-EM

Cisco 8800 Line Card - P100 ASIC based 3.7 Tbps line card

Release 24.3.1

Cisco 8800 Series Routers – Power Supply Unit (PSU)

PSU4.8KW-DC100

4.8KW 48V 100A DC Power Supply

Release 7.3.2

PSU6.3KW-HV

6.3KW AC/HVAC/HVDC Power Supply

Release 7.0.12

PSU6.3KW-20A-HV

6.3KW AC/HVAC/HVDC Power Supply-20A

Release 7.0.12

Supported software packages

Overview of Cisco IOS XR software

The Cisco IOS XR software is composed of a base image (ISO) that provides the XR infrastructure. The ISO image is made up of a set of packages (also called RPMs). These packages are of three types:

●     A mandatory package that is included in the ISO

●     An optional package that is included in the ISO

●     An optional package that is not included in the ISO

Visit the Cisco Software Download page to download the Cisco IOS XR software images.

View installed software packages

To determine the Cisco IOS XR Software packages installed on your router, log in to the router and enter the show install active command. To view the optional and bug fix RPM packages, first install the package and use the show install active summary command.

To know about all the RPMs installed including XR, OS and other components use the show install active all command.

Flexible software modularity

The software modularity approach provides a flexible model that allows you to install a subset of IOS XR packages on devices based on your individual requirements. All critical components are modularized as packages so that you can select the features that you want to run on your router.

Determine firmware support

To determine firmware support on your router, log in to the router and enter show fpd package command.

Related resources

Table 8.                 Related resources

Resource

Description

Smart licensing

Provides information about Smart Licensing Using Policy solutions and their deployment on IOS XR routers.

Cisco 8000 documentation

Provides CDC documentation for Cisco 8000 series routers.

Transceiver Module Group (TMG) compatibility matrix

Allows searching by product family, product ID, data rate, reach, cable type, or form factor to determine the transceivers that Cisco hardware device supports.

Cisco IOS XR Error messages

Allows searching by release number, error strings, or comparing release numbers to view a detailed repository of error messages and descriptions.

Cisco IOS XR MIBs

Allows selecting the MIB of your choice from a drop-down to explore an extensive repository of MIB information.

Yang data models in GitHub

Provides yang data models introduced and enhanced in every IOS XR release.

Recommended release

Provides a general guide in case of upgrading IOS XR routers or new deployments that involve IOS XR routers.


 

Legal information

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

© 2025 Cisco Systems, Inc. All rights reserved.

 

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