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Performance Route Processor Installation and Configuration Guide
OL-11656-01
Figure 2 shows the front panel view of the PRP-2.
Figure 2 PRP-2, Front Panel View
The PRP-2 is available as Product Number PRP-2 or PRP-2=, which includes one
PRP with 1 G of synchronous dynamic random-access memory (SDRAM) and
one 64-MB advanced technology attachment (ATA) Flash disk. A redundant PRP
(Product Number PRP-2/R) is also available.
PRP Functions
The PRP-1 for the Cisco 12000 Series Router includes the following primary
functions:
• Loading Cisco IOS software on all installed line cards at power up
• Providing a console (terminal) port for router configuration
• Providing an auxiliary port for other external equipment (such as modems)
• Providing two IEEE 802.3, 10/100-megabits-per-second (Mbps) Ethernet
ports for Telnet functionality
• Running routing protocols
• Building and distributing routing tables to line cards
• Providing general system maintenance functions
• Communicating with line cards either through the switch fabric or through
the maintenance bus (MBus). The MBus connection allows the PRP to
download a system bootstrap image, collect or load diagnostic information,
and perform general, internal system maintenance operations. The switch
fabric connection is the main data path for routing table distribution as well
as for packets that are sent between line cards and the PRP.
ACT
SIG
ACT
SIG
SLOT-1
SLOT-0
CONSOLE ETH 2AUX
RESET
PERFORMANCE ROUTE PROCESSOR 2
BITS 1BITS 0
DATA
LINK
DATA
LINK
ETH 1ETH 0
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