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9-13
Network Processing Engine and Network Services Engine Installation and Configuration
OL-4448-12
Chapter 9 Removing and Installing the NPE or NSE
Removing and Replacing the NPE or NSE
Installing DRAM SIMMs
The DRAM SIMMs on the network processing engine are located in the following sockets:
• U18, U25, U4, and U12 on the NPE-100 and the NPE-150 (See Chapter 1, “NPE-100, NPE-150, and
NPE-200 Overview,” Figure 1-1 and Figure 1-2.)
• U11, U25, U42, and U52 on the NPE-200 (See Chapter 1, “NPE-100, NPE-150, and NPE-200
Overview,” Figure 1-3.)
Caution Handle SIMMs by the edges only; avoid touching the memory modules, pins, or traces (the metal fingers
along the connector edge of the SIMM). (See Figure 9-8.)
To install memory SIMMs in the network processing engine, complete the following steps:
Step 1 With the network processing engine in the same orientation as the previous procedure (with the handle
away from you and the edge connector toward you), install the first SIMM in the socket farthest from
you. Then install the last SIMM in the socket closest to you.
Step 2 Remove a new SIMM from the antistatic bag.
Note To prevent DRAM errors in the NPE-100, NPE-150, or NPE-200, and to ensure that your system
initializes correctly at startup, DRAM bank
0 (sockets U18 and U25, or U11 and U25) must
contain no fewer than two SIMMs of the same type. You can also install two SIMMs of the same
type in bank
1 (sockets U4 and U12, or U42 and U52); however, bank 0 must always contain the
two largest SIMMs.
Figure 9-8 Cisco 7200 Series Main Memory SIMM
Step 3 Orient the SIMM so its connector edge (the metal fingers) is down and the component side is facing you.
(See
Figure 9-8.)
Step 4 Hold the sides of the SIMM between your thumb and middle finger, with your forefinger against the far
edge, opposite the connector edge.
Step 5 Tilt the SIMM to approximately the same angle as the socket and insert the entire connector edge into
the socket.
1 Alignment holes 3 Connector edge with notch
2 Polarization notch
66607
3 2
1