Index

Area Border Routers (ABRs)

RC-134

Autonomous System Boundary Routers

(ASBRs)

RC-134

 

 

 

autonomous systems

RC-132

 

backbone area

 

RC-133

 

 

 

Designated Router (DR)

RC-136

interior routers

RC-134

 

 

 

not-so-stubby area

RC-133

 

 

stub area

RC-133

 

 

 

 

routing domain confederation

RC-24

routing policy

RC-16

 

 

 

 

attaching to BGP neighbor

RC-238

configuration elements, editing

RC-235

defining

RC-237

 

 

 

 

defining (example)

RC-241

 

 

enforcing, BGP

RC-16

 

 

 

implementing

 

 

 

 

 

 

prerequisites

RC-206

 

 

 

inbound (example)

RC-242

 

 

modifying

RC-240

 

 

 

 

modular inbound (example)

RC-243

statements

 

 

 

 

 

 

 

action

RC-221

 

 

 

 

disposition

 

RC-220

 

 

 

elseif RC-221

 

 

 

 

if RC-221

 

 

 

 

 

 

remark

RC-219

 

 

 

 

RPL (routing policy language)

 

 

Boolean operators, types

RC-222

components

RC-211

 

 

 

 

overview

RC-206

 

 

 

 

policy

 

 

 

 

 

 

 

attributes

 

 

 

 

 

 

modification RC-216

 

 

parameterization

RC-214

 

Boolean operator precedence

RC-215

configuration basics

RC-213

 

default drop disposition

RC-217

definitions

RC-213

 

 

 

statement processing RC-217

 

 

statements, types RC-219

 

 

 

verification RC-218

 

 

 

structure

 

 

 

as-path-set, inline set form

RC-208

 

as-path-set, named set form

RC-208

 

community-set, inline set form

RC-209

community-set, named set form

RC-209

extended community set, inline form

RC-210

extended community set, named form

RC-209

names RC-207

 

 

 

prefix-set RC-210

 

 

 

sets RC-207

 

 

 

S

send-buffer-size command

RC-57

 

send-community-ebgp command

RC-67

set-attached-bit command

RC-122

 

set-overload-bit command

RC-120

show bgp af-group command

RC-12,RC-13

show bgp cidr-only command

RC-74

show bgp community command

RC-74

show bgp count-only command

RC-74

show bgp flap-statistics command

RC-50

show bgp flap-statistics reexp command RC-50

show bgp flap-statistics route-policy command RC-50

show bgp inheritance command

RC-12

show bgp neighbor command

RC-11

show bgp neighbor-group command

RC-14,RC-75

show bgp neighbors command

RC-74

show bgp paths command

RC-75

 

show bgp reexp command

RC-74

 

show bgp session-group command

RC-13

show bgp summary command

RC-75

show ip route connected command

RC-201

show isis adjacency command

RC-101

show isis adjacency-log command

RC-101

show isis command RC-93

 

 

 

Cisco IOS XR Routing Configuration Guide

RC-265

Page 281
Image 281
Cisco Systems IOS XR manual RC-265

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.