Specifications

12 Network Processing Engine Replacement Instructions

Installation Prerequisites

This section provides a list of parts and tools you need to remove and replace the network processing

engine in Cisco 7200 series routers and Cisco uBR7200 series routers. This section also includes

safety and ESD-prevention guidelines to help you avoid injury to yourself and damage to the

equipment. See the “Cisco Connection Online” section on page 38 for ordering and contact

information.

Tools and Parts Required

You need the following parts and tools to remove and replace a network processing engine in

Cisco 7200 series or Cisco uBR7200 series routers.

• A network processing engine (NPE-100, NPE-150, NPE-175, NPE-200, NPE-225, or NPE-300)

• Number 2 Phillips screwdriver and a 3/16-inch ﬂat-blade screwdriver

• An 8-mm wrench or nut driver, or adjustable wrench (for connecting a grounding lug to a

Cisco uBR7200 series DC-input power supply)

• A 7-mm wrench or nut driver, or adjustable wrench (for connecting the DC-input power lead

strain-relief cover to a DC-input power supply)

• Standard wire stripper (for connecting power to an installed DC-input power supply)

• Tape (for securing the switch handle of a DC circuit breaker in the OFF position)

• Your own ESD-prevention equipment or the disposable grounding wrist strap included with all

ﬁeld-replaceable units (FRUs)

• An antistatic mat or surface, or static-shielding bag

If your router is mounted in a 4-post or telco rack, make sure you have at least one other person

available to assist you with removing the chassis from the rack.

Software and Hardware Requirements

When installing an NPE-100 or NPE-150 in a Cisco 7200 series router, you must replace the existing

boot ROM on the I/O controller (see Figure 7) with the updated boot ROM that shipped with the

NPE-100 or NPE-150.

Note There is a boot ROM on the NPE-175, NPE-200, NPE-225, and on the NPE-300; therefore,

you do not have to replace the boot ROM on the I/O controller when installing a new NPE-175,

NPE-200, NPE-225, or NPE-300. When powering up a Cisco 7200 VXR router that has a newly

installed NPE-175, NPE-200, NPE-225, or NPE-300, or when powering up a Cisco 7200 router that

has a newly installed NPE-200, the system automatically uses the boot instructions contained in the

NPE boot ROM and ignores the boot ROM on the I/O controller.

This note does not apply to the Cisco uBR7200 series or the Cisco 7206VXR and Cisco 7206 as

router shelves in a Cisco AS5800 Universal Access Server.

When installing an NPE-175, NPE-225, or NPE-300 in a Cisco 7200 VXR router that is using a

previously purchased I/O controller, you must replace the existing Flash SIMM on the I/O controller

(see Figure 7) with the updated Flash SIMM that shipped with your NPE-300. The updated Flash

SIMM contains the new boot image you need to boot your router.