Used Cisco Network Processing Engine 200
Part # NPE-200
 Product
Description: Cisco 7200 Series -
Network Processing Engine NPE_200 (64MB Default Memory).
The NPE-200 has an R5000 microprocessor that operates at an
internal clock speed of 200 megahertz (MHz). The system
controller uses direct memory access (DMA) to transfer data
between DRAM and packet SRAM on the network processing engine.
The DRAM is used to store routing tables, protocols, network
accounting applications, packets of information in preparation
for process switching, and packet buffering for SRAM overflow.
The standard configuration is 32 MB, with up to 128 MB available
through single in-line memory modules (SIMM) upgrades. The
packet SRAM is for storing packets of information in preparation
for fast switching. The NPE-200 has 4 MB of SRAM. The unified
cache SRAM that functions as the secondary cache for the
microprocessor. (The primary cache is within the processor.) The
two environmental sensors for monitoring the cooling air as it
leaves the chassis, and the erasable programmable read-only
memory (EPROM) stores sufficient code for booting the Cisco IOS
software.
The network processing engine maintains and executes the
system management functions for the routers. It also shares the
system memory and environmental monitoring functions with the
I/O controller.
About the Cisco 7200 Series: "Four
to six slot routers. Features include support for up to 8,000
concurrent sessions, multi-protocol support, and voice/video/data
integration" (Cisco A Beginner's Guide Third Edition by Velte & Velte).
Cisco 7200 Series Processors
Cisco Routers - Part Numbers Listed Alphabetically
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