Cisco 7200 VXR router User Manual page 22

Field-Replaceable Units
Field-Replaceable Units
The Cisco 7200 VXR routers are easy to service; many of their major components are
field-replaceable units (FRUs). The following sections describe Cisco 7200 VXR router
FRUs:
•
Network Processing Engine on page 12
•
Input/Output Controller on page 27
•
Port Adapters and Service Adapters on page 38
•
Power Supplies on page 39
•
Chassis on page 42
•
Flash Disks and Flash Memory Cards on page 44
•
Rack-Mount and Cable-Management Kit on page 45
Note
separate documents that accompany each FRU shipped from the factory. For example, if
you need to replace an AC power supply in your Cisco 7200 VXR router, refer to the
280-Watt AC-Input Power Supply Replacement Instructions document. Replacement
instructions are also available on the Documentation CD-ROM and on Cisco Connection
Online (CCO).
Network Processing Engine
The network processing engine maintains and executes the system management functions
for Cisco 7200 series VXR routers. The network processing engine also shares the system
memory and environmental monitoring functions with the I/O controller.
Cisco 7200 VXR routers support five versions of the network processing engine: NPE-150,
NPE-175, NPE-200, NPE-225, and NPE-300. The network processing engines have the
same functionality; however, the performance differs because of the microprocessor type
and the type of memory for packet data (SRAM and DRAM, or SDRAM) that each network
processing engine provides.
1-12 Cisco 7200 VXR Installation and Configuration Guide
Replacement instructions for removing and replacing FRUs are contained in