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Cisco PIX Security Appliance Hardware Installation Guide
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Chapter 7 PIX 535
Installing a Circuit Board in the PIX535
An illustration of the 16 MB Flash circuit board is shown in Figure 7-13.
Figure 7-13 16 MB Flash Circuit Board
You must observe the following when installing a 16 MB Flash circuit board:
• The PIX security appliance must have a minimum of 32 MB of RAM memory.
• You must obtain a new activation key if you use 3DES.
• The PIX security appliance should not be downgraded to a software revision lower than 5.0(3) after
the new software from the 16 MB circuit board is installed.
• If you downgrade from software Version 5.3 to 5.2 or lower, you will lose private data (keys,
certifications, and CRLs) that are stored in Flash memory. You need to use the clear flashfs
command, downgrade 5.0 | 5.1 | 5.2 options if your PIX security appliance has 16 MB Flash
memory, private data stored in the Flash memory, and you used the ca save all command to save
these items in Flash memory.
To install the 16 MB Flash circuit board, perform the following steps:
Step 1 Record the present PIX security appliance serial number.
Step 2 Record the new serial number from the 16 MB Flash circuit board.
After installation, the serial number of the PIX security appliance becomes the serial number supplied
with the 16 MB Flash circuit board.
Step 3 Create a backup of your present configuration (to use later to reconfigure your system).
Step 4 Obtain a new Activation key (if using 3DES).
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