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Chapter 1 Product Overview
Route Processors
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Route Processor Types
Two types of RPs are available for Cisco 12006 and Cisco 12406 routers, the
Gigabit Route Processor (GRP), and the Performance Route Processor (PRP).
Each of these route processor types is reviewed in the following sections:
• Gigabit Route Processor, page 1-16
• Performance Route Processor, page 1-25
When not explicitly specified, this document uses the term route processor (RP)
to indicate either the GRP or the PRP.
Note If you install a second RP for redundancy, the second RP must be of the same type
as the primary RP.
Gigabit Route Processor
This section provides information about the GRP. The GRP front view is shown
in Figure 1-4.
Figure 1-4 Gigabit Route Processor (Front View)
The GRP card has the following components:
• RISC processor—IDT R5000 Reduced Instruction Set Computing (RISC)
processor used for the CPU. The CPU runs at an external bus clock speed of
100 MHz and an internal clock speed of 200 MHz.
• DRAM—Up to 512 megabytes (MB) of parity-protected, extended data
output (EDO) dynamic random-access memory (DRAM) on two
60-nanosecond (ns), dual in-line memory modules (DIMMs). 128 MB of
DRAM is the minimum shipping configuration for the GRP.
SLOT-0
GIGABIT ROUTE PROCESSOR
SLOT-1
COLL
LINK
TX
RX
RJ-45
MII
RESET
AUX
CONSOLE
EJECT
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