Cisco Systems NPE-225, NPE-175 manual Installing Sdram DIMMs, Handling the Dimm

Chapter 9 Removing and Installing the NPE or NSE

Removing and Replacing the NPE or NSE

Figure 9-11 Handling the DIMM

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SDRAM DIMM

Caution To prevent ESD damage, handle the DIMM by the card edges only. Place a removed DIMM on an antistatic mat and store it in an antistatic container.

Step 6 Place the DIMM in an antistatic container to protect it from ESD damage.

This completes the DIMM removal procedure. Go to the “Installing SDRAM DIMMs” section on page 9-16.

Installing SDRAM DIMMs

Caution The DIMM is a sensitive component that is susceptible to ESD damage. Handle the DIMM by the edges only; avoid touching the memory modules, pins, or traces (the metal fingers along the connector edge of the DIMM). To prevent ESD damage, handle the DIMM as shown in Figure 9-11.

Note The NPE-300 contains two banks of SDRAM. Both SDRAM banks are used for all packet memory requirements; however, bank 0 is used exclusively for packet memory and is set at a fixed configuration in the factory.

Bank 1 contains two user-configurable SDRAM slots, DIMM slot 2 and DIMM slot 3. (See Chapter 3, “NPE-300 and NPE-400 Overview,” the “Components” section on page 3-2.) Both slots in bank 1 can be populated by DIMMs of different sizes; however, the size of the DIMM in slot 2 must be greater than or equal to the size of the DIMM in slot 3, and the size of the DIMM in slot 3 can be zero.

Network Processing Engine and Network Services Engine Installation and Configuration

9-16 OL-4448-12