Introduction

CRS Multi Self system allows the CRS platform to significantly scale by interconnecting multiple chassis as one.

Architectural Overview

• CRS Multi-Self is made of the the following components:
  • Line Card Chassis (LLC) - Single CRS chassis.
  • Fabric Card Chassis (FCC) - Fabric chassis interconnecting other LLCs.
  • S13 fabric cards - fabric card on the LLC interconnecting to the FCC.
  • S2 fabric cards and Optical Interface Modules (OIM) - fabric card on the FCC.
  • Fabric array cables
• Minimal configuration is to have one LLC and one FCC which is called 1+1 system.

LLC

• LLC can operate as an individual chassis .
• It is made of the following components:
  • Modular Service Cards (MSC)
  • Physical Layer Interface Modules (PLIM) -
  • S13 Fabric Cards (SFC)
  • Route Processor (RP)
  • Distributed Route Processor (DRP)
• LLC have their own cooling and power units.

FCC

• FCC is made of the following components:

Three Stage Architecture

Additional Resources

Cisco CRS Multishelf System Overview - Cisco
Carrier Routing System - Wikipedia
BRKARC-3002 - Cisco CRS Carrier Routing System Multichassis Overview - CiscoLive

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