How To Migrate To A Cisco Crs-3 Carrier Routing System (16-Slot); Administratively Disabling The Fabric Plane - Cisco CRS-1 - Carrier Routing System Router Migration Manual

Chapter 1 Migrating to a Cisco CRS-3 Carrier Routing System
Benchmark the Traffic
Before starting the migration process, take a snapshot of the traffic flowing through the router and use
it as a benchmark to compare against traffic flow during the migration and/or after completing the
migration. Since it is a hitless migration, there should be zero impact to the traffic flow during the
migration and/or after completing the migration.
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How to Migrate to a Cisco CRS-3 Carrier Routing System
(16-Slot)
To migrate from a 16-slot Cisco CRS-1 Carrier Routing System to a 16-slot Cisco CRS-3 Carrier
Routing System, you must complete the following tasks:
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The migration procedure may be done on one Fabric Card at-a-time.
In a CRS-1 system with redundant fabric (i.e. 8 planes), upgrade to CRS-3 fabric is hitless - zero drop
in traffic as we upgrade plane by plane from a CRS-1 to CRS-3.
The detailed migration procedure is detailed in the sections below, for the 16-slot Cisco CRS-1 Carrier
Routing System.

Administratively Disabling the Fabric Plane

This section describes how to migrate the fabric cards in a single-chassis system and establish
communications between the designated shelf controller (DSC) LCC and one or more FCCs.
SUMMARY STEPS
1.
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To avoid traffic loss, you must upgrade the switch fabric one plane at a time. To do that, you must
replace each FC/S card with a new FC-140G/S card and restore service to that fabric plane before
upgrading the next fabric plane.
You will probably want to perform the migration during a network maintenance window or when
system traffic is light.
Note Be sure to review the migration procedures before deciding when to schedule the migration.
That way, you can familiarize yourself with the migration procedure and determine if there
are other issues to consider before performing the migration.
Cisco recommends not moving a chassis after it is cabled. Before the fabric cables are installed, the
chassis should be fully installed with power supplies, console cables, grounded, and so forth
Administratively Disabling the Fabric Plane, page 1-5
Disabling Power to the CRS-1 Fabric Card, page
Physically Removing the CRS-1 Fabric Card, page 1-9
Installing an SFC, page 1-11.
Verifying the Installation of an SFC, page 1-15
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Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide

How to Migrate to a Cisco CRS-3 Carrier Routing System (16-Slot)

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