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Performance Route Processor Installation and Configuration Guide
OL-11656-01
The PRP-2 contains the following additional components:
• SDRAM—Up to 4 GB of Cisco-approved synchronous dynamic
random-access memory (SDRAM) on two dual in-line memory modules
(DIMMs). 1 GB of SDRAM is the default shipping configuration. SDRAM is
field replaceable only when using Cisco-approved DIMMs.
Note Software releases prior to 12.0(30)S do not recognize more than 2 GB of
SDRAM and will only use the first 2 GB of the installed memory. This
does not affect the functioning of the PRP-2, but commands such as show
version will indicate that only 2 GB of SDRAM are installed.
• Hard disk drive—40-GB hard disk drive can be optionally installed on the
PRP-2 board.
• CF—1-GB compact flash disk can be optionally installed on the PRP-2
board.
Cisco IOS Software Storage
The Cisco IOS software images that run the Cisco 12000 Series Router system are
stored in Flash memory. Two types of Flash memory ship with the PRP-1:
• Onboard Flash memory—Ships as a single in-line memory module (SIMM).
This Flash memory contains the Cisco IOS boot image (bootflash) and is not
field replaceable.
• Flash disk—The PRP ships with an ATA Flash disk that can be installed in
either Flash disk slot. The Flash disk contains the Cisco IOS software image.
Linear Flash memory cards are also supported in the PRP-1.