Preface

From Release 6.1.2 onwards, Cisco introduces support for the 64-bit Linux-based IOS XR operating system. Extensive feature parity is maintained between the 32-bit and 64-bit environments. Unless explicitly marked otherwise, the contents of this document are applicable for both the environments. For more details on Cisco IOS XR 64 bit, refer to the Release Notes for Cisco ASR 9000 Series Routers, Release 6.1.2 document.

The IP Addresses and Services Configuration Guide for Cisco ASR 9000 Series Routers preface contains these sections:

Changes to This Document

Table 1. Changes to This Document

Date

Change Summary

December 2023

Republished for Release 7.6.3.

March 2022

Initial release of this document.

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