Index

interior routers

RC-134

 

IPv6

 

 

IS-IS support

 

 

multitopology RC-88

 

single-topology RC-87

 

RIB support

RC-197

 

routing RC-86

 

IS-IS (Intermediate System-to-Intermediate System)

adjacencies, tuning RC-113

 

attached bit on an instance

RC-90

authentication, configuring

RC-108

Cisco IOS and Cisco IOS XR software differences,

configuration

 

grouped

RC-85

 

configuration

 

 

grouped configuration RC-85

Level 1 or Level 2 routing RC-91

multitopology RC-98

restrictions

RC-84

single topology

RC-93

customizing routes

RC-119

default routes

RC-90

description

RC-83

 

enabling RC-91,RC-250,RC-251,RC-253enabling multicast-intactRC-118functional overview RC-85grouped configuration RC-85

IPv6 routing RC-86

Level 1 or Level 2 routing, configuration RC-91LSP flooding

controlling RC-102lifetime maximum RC-87limiting RC-86

MPLS TE configuring RC-110description RC-89

multi-instance IS-IS RC-89multitopology, configuring RC-98nonstop forwarding RC-88

configuring

RC-106

overload bit

 

configuring

RC-87

on router RC-89

policy attach points

redistribute

RC-234

restrictions, configuring RC-84

set SPF interval

RC-116

single topology

 

configuring

RC-93

single-topology

 

IPv6 support

RC-87

isis router submode

router isis command RC-100ispf command RC-117

ispf startup-delay command RC-117is-type command RC-92

L

link-state advertisement (LSA)

OSPFv2 RC-137

OSPFv3 RC-129,RC-137,RC-143local-as command RC-56

log adjacency changes command RC-114,RC-147

lsp-check-interval command

RC-103

LSP flooding

 

 

controlling RC-102

 

 

lifetime maximum RC-87

 

limiting RC-86

 

 

mesh group configuration

RC-87

on specific interfaces

RC-87

lsp-gen-interval command RC-103

lsp-interval command

RC-104

 

lsp-mtu command RC-103

 

lsp-password command

RC-109

lsp-refresh-interval command

RC-103

Cisco IOS XR Routing Configuration Guide

RC-260

Page 276
Image 276
Cisco Systems IOS XR manual RC-260

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.