Implementing IS-IS on Cisco IOS XR Software

How to Implement IS-IS on Cisco IOS XR Software

DETAILED STEPS

 

Command or Action

Purpose

Step 1

 

 

configure

Enters global configuration mode.

 

Example:

 

 

RP/0/RP0/CPU0:router# configure

 

Step 2

 

 

interface type instance

Enters interface configuration mode.

 

Example:

 

 

RP/0/RP0/CPU0:router(config)# interface POS

 

 

0/1/0/3

 

Step 3

 

 

ipv4 address address mask

Defines the IPv4 address for the interface.

 

or

An IP address is required on all interfaces in an area

 

 

 

ipv6 address ipv6-prefix/prefix-length [eui-64]

enabled for IS-IS if any one interface is configured for

 

or

IS-IS routing.

 

 

 

ipv6 address ipv6-address {/prefix-length

or

 

link-local}

 

 

 

or

Specifies an IPv6 network assigned to the interface and

 

ipv6 enable

enables IPv6 processing on the interface.

 

 

 

Example:

or

 

Specifies an IPv6 address assigned to the interface and

 

RP/0/RP0/CPU0:router(config-if)# ipv4 address

 

enables IPv6 processing on the interface.

 

10.0.1.3 255.255.255.0

 

or

or

 

 

 

RP/0/RP0/CPU0:router(config-if)# ipv6 address

Automatically configures an IPv6 link-local address on the

 

3ffe:1234:c18:1::/64 eui-64

 

interface while also enabling the interface for IPv6

 

or

 

processing.

 

RP/0/RP0/CPU0:router(config-if)# ipv6 address

 

The link-local address can be used to communicate

 

FE80::260:3EFF:FE11:6770 link-local

 

or

only with nodes on the same link.

 

RP/0/RP0/CPU0:router(config-if)# ipv6 enable

Specifying the ipv6 address ipv6-prefix/prefix-length

 

 

interface configuration command without the eui-64

 

 

keyword configures site-local and global IPv6

 

 

addresses.

 

 

Specifying the ipv6 address ipv6-prefix/prefix-length

 

 

command with the eui-64keyword configures

 

 

site-local and global IPv6 addresses with an interface

 

 

ID in the low-order 64 bits of the IPv6 address. Only the

 

 

64-bit network prefix for the address needs to be

 

 

specified; the last 64 bits are automatically computed

 

 

from the interface ID.

 

 

Specifying the ipv6 address command with the

 

 

link-localkeyword configures a link-local address on

 

 

the interface that is used instead of the link-local

 

 

address that is automatically configured when IPv6 is

 

 

enabled on the interface.

 

 

 

Cisco IOS XR Routing Configuration Guide

RC-99

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Cisco Systems IOS XR manual RC-99

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.