Cisco 10005 ESR Manuel - Page 2

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Spare Parts

Cisco 10005 ESR Hardware Overview and Maintenance Guide
3-2
Situational Analysis
Service providers usually draw on their own experience with similar equipment
as they try to determine the number of spare parts of a given item to keep on hand.
In developing a strategy for spare parts, the service providers must
Evaluate the criticality of the equipment.
•
Estimate the mean time between failures, a key component of any spares
•
strategy.
Calculate the number of production routers (and associated components) they
•
need to have on hand. For example, if they have the critical mass to shift
capacity to other locations or other devices, they may be able to carry fewer
spares.
Service providers may also subscribe to services that supply them with
replacement parts, sometimes with turnaround times as short as 4 hours.
Chapter 3
Maintaining the Cisco 10005 ESR
OL-1102-07