Cisco 7200 VXR User Manual
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Cisco 7200 VXR Installation and Configuration Guide
OL-5013-09
Chapter 1 Cisco 7200 VXR Product Overview
Field-Replaceable Units
•
Rack-Mount and Cable-Management Kit, page 1-53
Note
Replacement instructions for removing and replacing FRUs are contained in separate online documents.
For example, if you need to replace an AC power supply in your Cisco 7200 VXR router, refer to the
publication. Replacement instructions are
available on the Documentation DVD and on Cisco.com.
Network Processing Engine or Network Services Engine
The network processing engine or network services engine maintains and executes the system
management functions for Cisco 7200 VXR routers. Also, the network processing engine or network
services engine shares the system memory and environmental monitoring functions with the I/O
controller.
Because the NPE-G1 and NPE-G2 contain I/O functionality, the Cisco 7200 VXR routers can operate
with no I/O controller with an NPE-G1 or NPE-G2 installed. With both an I/O controller and the NPE-G1
or NPE-G2 installed, the NPE-G1 or NPE-G2 enhances the I/O controller functionality.
Cisco 7200 VXR routers support nine versions of the network processing engine: NPE-G2, NPE-G1,
NPE-400, NPE-300, NPE-225, NPE-200, NPE-175, NPE-150, and NPE-100. These network processing
engines have the same functionality; however, their 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.
Cisco 7200 VXR routers also support the NSE-1, which consists of two modular boards: the processor
engine board and the network controller board. The NSE-1 Parallel eXpress Forwarding (PXF) processor
works with the Route Processor to provide accelerated packet switching, as well as accelerated IP
Layer 3 feature processing.
Note
Detailed instructions for removing and replacing the network processing engines or network services
engine are contained in the online Network Processing Engine and Network Services Engine Installation
and Configuration publication. It is available on the Documentation DVD and on Cisco.com.
The network processing engines and network services engine consist of the following components:
•
Reduced instruction set computing (RISC) microprocessor
–
The NPE-G2 uses a Motorola Freescale 7448 microprocessor that operates at an internal clock
speed of 1.67 GHz.
–
The NPE-G1 uses a BCM 1250 microprocessor that operates at an internal clock speed of 700 MHz.
–
The NSE-1 uses an RM7000 microprocessor that operates at an internal clock speed of
262 MHz.
–
The NPE-400 uses an RM7000 microprocessor that operates at an internal clock speed of
350 MHz.
–
The NPE-300 uses an RM7000 microprocessor that operates at an internal clock speed of
262 MHz.
–
The NPE-225 has an RM5271 microprocessor that operates at an internal clock speed of
262 MHz.
–
The NPE-200 has an R5000 microprocessor that operates at an internal clock speed of
200 MHz.