Used Cisco Network Processing Engine
Part # NPE-300
 Product
Description: Cisco 7200 Series -
7200VXR NPE-300 with 32MB Base Memory (128MB Additional Memory).
The network processing engine maintains and executes the system
management functions for the Cisco 7200 series routers and Cisco
uBR7200 series routers. The network processing engine also
shares the system memory and environmental monitoring functions
with the I/O controller. The NPE-300 is compatible with the
Cisco 7200 VXR routers only. The NPE-300 is keyed to prevent
insertion in the Cisco 7200 series routers (7202, 7204, and
7206). The Cisco 7206VXR as a router shelf supports the NPE-300.
The NPE-300 uses an RM7000 microprocessor that operates at an
internal clock speed of 262 MHz. The NPE-300 uses SDRAM for
storing all packets received or sent from network interfaces.
The SDRAM also stores routing tables and network accounting
applications. Two independent SDRAM memory arrays in the system
allow concurrent access by port adapters and the processor. The
NPE-300 has three levels of cache: a primary and a secondary
cache that are internal to the microprocessor, and a tertiary,
2-MB external cache that provides additional high-speed storage
for data and instructions. The NPE-300 has boot ROM Boot ROM for
storing sufficient code for booting the Cisco IOS software. The
network processing engines perform the following system
management functions: sending and receiving routing protocol
updates, managing tables, caches, and buffers, monitoring
interface and environmental status, providing Simple Network
Management Protocol (SNMP) management through the console and
Telnet interface, accounting for and switching of data traffic,
booting and reloading images, managing port adapters
(recognition and initialization during online insertion and
removal).
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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