Specifications

Network Processing Engine Replacement Instructions 3
Network Processing Engine Description
• For international agency compliance, safety, and statutory information for wide-area network
(WAN) interfaces for the Cisco 7200 series routers, the Cisco AS5800 Universal Access Server,
and the Cisco uBR7200 series routers, refer to the following publications:
— Regulatory Compliance and Safety Information for the Cisco 7200 Series Routers
— Cisco AS5800 Universal Access Server Regulatory Compliance and Safety Information
— Regulatory Compliance and Safety Information for the Cisco uBR72xx Universal
Broadband Router.
• For general information about documentation, see the “Cisco Connection Online” section on
page 38, or call customer service at 800 553-6387 or 408 526-7208. Customer service hours are
5:00 a.m. to 6:00 p.m. Pacific time, Monday through Friday (excluding Cisco-observed
holidays). You can also send e-mail to [e-mail].
Note You can access Cisco IOS software configuration and hardware installation and
maintenance documentation on the World Wide Web at http://www.cisco.com,
http://www-china.cisco.com, or http://www-europe.cisco.com.
Network Processing Engine Description
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 network processing engine is available in five versions: 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.
The NPE-175 and NPE-225 consist of two modular boards: the processor engine board and the
network controller board. SRAM is not included in the NPE-175 or NPE-225.
Note The NPE-100 is no longer an orderable product as of May 1999.
Note The Cisco 7200 VXR routers support all versions of the NPE.
The Cisco 7200 routers support the NPE-100, NPE-150, NPE-175, NPE-200, and NPE-225.
The Cisco 7206 as a router shelf in a Cisco AS5800 Universal Access Server only supports the
NPE-200. The Cisco 7206VXR as a router shelf supports the NPE-300.
The Cisco uBR7200 series supports only the NPE-150 and the NPE-200.
Note 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).