Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description
Preface
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Table of Contents

Preface

Objective

Audience

Document Organization

Document Conventions

Related Documentation

Software Documents

C hanges to This Document

Obtaining Documentation and Submitting a Service Request

Preface

This preface explains the objectives, intended audience, and organization of this Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description , commonly referred to as the “system description” in this document, and presents the conventions used in this manual.

Objective

This guide describes the Cisco CRS 8-Slot Line Card Chassis Enhanced router from a system point of view. This guide focuses on the hardware elements, including descriptions of most of the major assemblies, such as the power and cooling systems, the switch fabric, route processor, and modular services cards. It also provides background information and the basic theory of operation for this routing system.

This guide can be read as a supplement to the Site Planning Guide, Installation Guide, and the related software documents.

Audience

The Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Enhanced Router System Description is intended for service provider customers and Cisco installation partners who have substantial background in configuring router-based internetworks and experience with routers and Cisco IOS XR software. The system description provides a high-level introduction to the components and vocabulary used within the Cisco CRS 8-Slot Line Card Chassis Enhanced router product.

Document Organization

This system description contains the following chapters and appendixes:

Document Conventions

This guide uses the convention where the symbol ^ represents the key labeled Control or Ctrl . For example, the key combination ^ z means hold down the Control key while you press the z key.

Command descriptions use these conventions:

  • Examples that contain system prompts denote interactive sessions, indicating the commands that you should enter at the prompt. The system prompt indicates the current level of the EXEC command interpreter. For example, the prompt router> indicates that you should be at the user level, and the prompt router# indicates that you should be at the privileged level. Access to the privileged level usually requires a password. Refer to the related software configuration and reference documentation listed in the “Related Documentation” section for additional information.
  • Commands and keywords are in bold .
  • Arguments for which you supply values are in italics .
  • Elements in square brackets ([ ]) are optional.
  • Alternative but required keywords are grouped in braces ({}) and separated by vertical bars (|).

Examples use these conventions:

  • Terminal sessions and sample console screen displays are in screen font.
  • Information you enter is in boldface screen font.
  • Nonprinting characters, such as passwords, are in angle brackets (< >).
  • Default responses to system prompts are in square brackets ([]).
  • Exclamation points (!) at the beginning of a line indicate a comment line.

Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in this manual.



Timesaver Means the described action saves time. You can save time by performing the action described in the paragraph.



Caution Means reader be careful. You are capable of doing something that might result in equipment damage or loss of data.


IMPORTANT SAFETY INSTRUCTIONS


Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071

SAVE THESE INSTRUCTIONS


Software Documents

For a complete listing of available software documentation for the Cisco CRS Carrier Routing System, see About Cisco IOS-XR Software Documentation , available online at:

http://www.cisco.com/en/US/products/ps5763/products_documentation_roadmaps_list.html

Changes to This Document

Table 1 lists the technical changes made to this document since it was first printed.

 

Table 1 Changes to This Document

Revision
Date
Change Summary

OL-25854-04

January 2014

Added updates to support the Cisco CRS-X, which includes new line cards, switch fabric cards, and PLIMs.

OL-25854-03

September 2013

Added updates to support new fan tray.

OL-25854-04

May 2012

Added corrections based on unpacking, moving and installing process changes.

OL-25854-01

January 2012

Initial release of this document.

This document introduces the Cisco CRS 8-Slot Line Card Chassis Enhanced router. The Cisco CRS 8-Slot Line Card Chassis Enhanced router includes the following new features:

  • The midplane on the Cisco CRS 8-Slot Line Card Chassis Enhanced router is redesigned to support 400G per slot.
  • The Cisco CRS 8-Slot Line Card Chassis Enhanced router has its own power and cooling subsystems.
  • A new power shelf with an upgraded 70 Amp circuit breaker has been introduced for the new Cisco CRS 8-Slot Line Card Chassis Enhanced router.
  • The Cisco CRS 8-Slot Line Card Chassis Enhanced router removes the zone circuit breaker and thus, eliminates power-zoning.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation , which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.