RC-155

I N D E X

HC Cisco IOS XR Interface and Hardware Component Configuration Guide

IC Cisco IOS XR IP Addresses and Services Configuration Guide MCC Cisco IOS XR Multicast Configuration Guide

MPC Cisco IOS XR MPLS Configuration Guide

QC Cisco IOS XR Modular Quality of Service Configuration Guide

RC Cisco IOS XR Routing Configuration Guide

SC Cisco IOS XR System Security Configuration Guide SMC Cisco IOS XR System Management Configuration Guide

A

address family command

RC-5

 

address-family command (IS-IS)

RC-96

adjacencies, tuning

RC-113

 

 

administrative distance

RC-197

 

advertisement-interval command

RC-56

aggregate-address command

RC-44

apply command

RC-223

 

 

 

Area Border Routers (ABRs)

RC-134

area command

RC-146

 

 

 

attached bit on an IS-IS instance

RC-90

authentication

 

 

 

 

 

MD5 (OSPFv2)

RC-135

 

 

route, key rollover (OSPFv2)

RC-136

strategies RC-136authentication, configuring (OSPFv2) authentication command (OSPFv2) RC-156authentication message-digest command RC-162Autonomous System Boundary Routers (ASBRs) RC-134autonomous systems RC-132

B

backbone area RC-133bestpath algorithm RC-18

BGP (Border Gateway Protocol)

 

 

bestpath algorithm

RC-18

 

 

configuration

 

 

 

 

grouping

 

RC-5

 

 

 

inheriting

 

RC-7

 

 

 

description

 

RC-1

 

 

 

functional overview

RC-2

 

 

inheritance, monitoring RC-11

 

 

local next-hop addresses, validating

RC-4

multiprotocol

RC-21

 

 

neighbors, maximum limits on

RC-3

 

policy attach points

 

 

 

dampening

RC-225

 

 

default originate

RC-225

 

 

neighbor export

RC-226

 

 

neighbor import

RC-226

 

 

network

RC-227

 

 

 

redistribute

RC-227

 

 

show bgp

 

RC-228

 

 

 

table policy RC-229

 

 

policy attach points, aggregation

RC-224

router identifier

 

 

 

router identifier

RC-3

 

 

routing policy

 

 

 

enforcing

 

RC-16

 

 

 

update groups

 

 

 

description

RC-18

 

 

example

RC-77

 

 

 

bgp bestpath as-path ignore command

RC-40

bgp bestpath compare-routerid command RC-41

bgp bestpath med always command

RC-40

bgp bestpath med confed command

RC-40

bgp bestpath med missing-as-worst command RC-40bgp confederation identifier command RC-32

bgp confederation peers command RC-33

Cisco IOS XR Routing Configuration Guide

RC-257

Page 273
Image 273
Cisco Systems IOS XR manual D E, RC-257

IOS XR specifications

Cisco Systems IOS XR is an advanced operating system designed specifically for high-performance routers and service provider networks. It serves as the backbone for many of Cisco's high-end routing platforms, enabling service providers to manage their networks with increased efficiency, flexibility, and scalability.

One of the main features of IOS XR is its modular architecture. This allows for the independent operation of various components within the OS, facilitating the deployment of new features and updates without affecting the overall stability of the system. This modularity ensures that service providers can implement rapid changes and enhancements while maintaining service continuity.

Another characteristic of IOS XR is its support for 64-bit architecture, which provides enhanced performance and the ability to manage larger amounts of data. This is particularly beneficial for service providers that deal with high traffic volumes and require robust data processing capabilities. The utilization of 64-bit technology also enables the operating system to utilize memory more efficiently, allowing for greater scalability.

IOS XR incorporates advanced technologies such as Distributed System Architecture (DSA) and Multiple Routing Instances (Merging Routes). DSA allows for the distribution of routing processes across multiple hardware resources, maximizing performance and redundancy. Multiple Routing Instances enable operators to create separate logical routing tables for different services, improving isolation and efficiency in managing network traffic.

The operating system also focuses heavily on security, featuring extensive encryption methods and access controls to safeguard network resources. IOS XR supports various authentication protocols, ensuring secure access to routers and switches. In addition, the OS includes comprehensive logging and monitoring capabilities, allowing network administrators to track activities and respond quickly to potential threats.

Another critical aspect of IOS XR is its adherence to the principles of service-oriented architecture (SOA). This approach permits the development of applications and services that can operate independently, fostering innovation and enabling service providers to tailor their offerings based on customer demands.

Ultimately, Cisco IOS XR is a powerful, reliable operating system that meets the complex needs of modern telecommunications networks. With its focus on modularity, performance, security, and scalability, it enables service providers to deliver high-quality, resilient services to their customers while efficiently managing network resources. As the industry continues to evolve, IOS XR remains a vital tool for those aiming to stay competitive in the ever-changing landscape of networking.