Chapter 1 Upgrading to a Multishelf System

How to Upgrade to a Multishelf System

Upgrading the Fabric Cards and Adding an FCC

This section describes how to upgrade the fabric cards in a single-chassis system and establish communications between the designated shelf controller (DSC) LCC and one or more FCCs.

Prerequisites

Software Requirements

Cisco IOS XR Software Release 3.4.0 or later

ROMMON 1.42 or later

Caution The ROM Monitor software must be upgraded to version 1.42 or higher on all RPs before a Cisco CRS-1 system is upgraded to Cisco IOS XR Software Release 3.4.0 or higher release. If the router is brought up with an incompatible version of the ROM Monitor software, then the standby RP may fail to boot.

For instructions to overcome a boot block in the standby RP in a single chassis system, see Cisco IOS XR ROM Monitor Guide. If a boot block occurs in a multishelf system, contact your Cisco Systems support representative for assistance. See Obtaining Technical Assistance, page viii.

In addition, Cisco CRS-1 Multishelf systems should be upgraded to ROMMON release 1.42 before being upgraded to IOS XR Release 3.4.0 to ensure RPs are assigned the correct rack numbers during system boot.

For more information, see Cisco IOS XR ROM Monitor Guide.

Hardware Requirements

The system hardware should be prepared as described in the “Prerequisites for Upgrading to a Multishelf System” section on page 1-1.

The control network must be set up as described in the “Prerequisites for Upgrading to a Multishelf System” section on page 1-1.

The power should be off for the FCCs and any additional LCCs.

Restrictions

None.

SUMMARY STEPS

1.admin

2.configure

3.dsc serial serialNumber rack 0

4.dsc serial serialNumber rack Frack

5.controllers fabric plane planeNumber oim count 1

oim instance 0 location Frack/slot/FM

6.commit

7.end

Cisco CRS-1 Carrier Routing System Multishelf System Upgrade and Conversion Guide

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Cisco Systems CRS-1 manual Upgrading the Fabric Cards and Adding an FCC, None

CRS-1 specifications

Cisco Systems' Carrier Routing System (CRS-1) is a cutting-edge, high-capacity router designed to meet the demands of service providers and large enterprises. Introduced in the early 2000s, the CRS-1 represents a significant leap forward in routing technology, offering unparalleled performance, scalability, and reliability.

One of the primary features of the CRS-1 is its exceptional scalability. The system is built on a modular architecture that allows for easy upgrades and expansions. This enables service providers to start with a configuration that suits their immediate needs while having the flexibility to expand as traffic demands grow. The CRS-1 supports a wide range of line cards, enabling data, voice, and video to be managed on a single platform, which simplifies network management and reduces operating costs.

The CRS-1 leverages advanced technologies that enable it to deliver impressive performance. With the ability to handle up to 92 terabits per second of throughput, the router is capable of supporting a vast number of connections, making it well-suited for large-scale service providers and data centers. This level of performance is powered by Cisco’s proprietary silicon technology, which optimizes the packet forwarding process and enhances overall efficiency.

Another key characteristic of the CRS-1 is its strong focus on reliability and redundancy. The system is designed with high availability in mind, ensuring that it can continue to operate seamlessly even in the event of hardware failures. Redundant components, such as power supplies and route processors, allow the CRS-1 to maintain its performance and uptime, a critical requirement for mission-critical network operations.

Additionally, the CRS-1 supports a wide variety of protocols and technologies, including Internet Protocol (IP), Multiprotocol Label Switching (MPLS), and various service provider features. This versatility makes it a compelling choice for organizations looking to implement advanced networking capabilities, such as Quality of Service (QoS) and traffic engineering.

In summary, the Cisco Systems CRS-1 stands out as a formidable solution for modern routing needs. Its modular design, exceptional scalability, robust performance, reliability, and support for multiple protocols and services make it an ideal choice for service providers and enterprises seeking to future-proof their networks. As the demand for bandwidth continues to surge, the CRS-1 remains a pivotal component in the evolution of networking infrastructure.