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Cisco CRS-1 Carrier Routing System Multishelf System Upgrade and Conversion Guide
OL-12571-01
Chapter1 Upgrading to a Multishelf System
How to Upgrade to a Multishelf System

What to Do Next

When the Rack 0 upgrade is completed and Rack 0 is communicating with FCCs, the next step is to add
a second LCC to the multishelf system.
Adding an LCC to a Multishelf System
This section describes how to add an LCC to a multishelf system.

Prerequisites

Software Requirements
•Cisco IOS XR Software Release 3.4.0 or later
•ROMMON 1.42 or later
Hardware Requirements
•The LCC to be added must be prepared as de scribed in the “Prerequisites for Upgrading to a
Multishelf System” section on page 1-1.
•The control network must be operational and c onnected to all chassis.
•The power should be off for the LCC to be added.

Restrictions

None.

SUMMARY STEPS

1. admin
2. configure
3. dsc serial serialNumber rack 1
4. controllers fabric rack 1 install-mode
5. commit
6. Apply power to the new LCC (Rack 1).
7. Connect all fabric cables that connect the fabric planes in the new LCC to the FCCs.
8. In the FCCs, check the LEDs for the cables that connect to the new LCC (Rack 1).
9. do show controllers fabric rack-status all detail
10. do show controllers fabric fabric-backpressure summary
11. no controllers fabric rack 1 install-mode
12. commit
13. do show controllers rack-status all detail