Interface and Hardware Component Configuration Guide for Cisco ASR 9000 Series Routers, IOS XR Release 25.1.x, 25.2.x, 25.3.x, 25.4.x

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Updated:: December 17, 2025

Chapter: New and Changed Feature Information

New and Changed Feature Information
Interface and Hardware Component Features Added or Modified in IOS XR Release 25.x.x

New and Changed Feature Information

This chapter lists all the features that have been added or modified in this guide. The table also contains references to these feature documentation sections.

Interface and Hardware Component Features Added or Modified in IOS XR Release 25.x.x

Table 1. New and Changed Features
Feature	Description	Changed in Release	Where Documented
Application select code provisioning	This feature was introduced.	Release 25.4.1	Application select code provisioning
Support for DP04QSDD-ULH-A1 Optical module	This feature was introduced.	Release 25.4.1	Configuring 400G Digital Coherent Optics
Configuring QDD Optical Line System	This feature was introduced.	Release 25.3.1	Configure QDD optical line system

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