Lcd Cable; Performance Routing Engine; Pre Modules And Pre1 Modules - Cisco Universal Broadband Router uBR10012 Hardware Installation Manual

Chapter 1 Cisco uBR10012 Universal Broadband Router Overview

LCD Cable

The LCD ribbon cable connects the LCD module to the backplane. The folded end is connected to the
LCD module. See
Figure 1-9
LCD module
Fold

Performance Routing Engine

There are four models of PREs, the original PRE module that was initially shipped with the
Cisco uBR10012 router, the PRE1 module that began shipping with Cisco IOS Release 12.2(4)XF, the
PRE2 module that is shipping with Cisco IOS Release 12.3(9)BC, and the PRE4 module that is shipping
with Cisco IOS Release 12.2(33)SB.
•
•
•
You can use the CLI show version command to determine whether a PRE, PRE1, PRE2, or PRE4
module is installed in your system.
Note The PRE3 is not supported on the Cisco uBR10012 router
The PRE is a single-slot module used with the Cisco uBR10012 routers. The PRE performs all Layer 2
and Layer 3 packet routing and forwarding using an advanced parallel processing architecture called
Parallel eXpress Forwarding (PXF). This process separates the control plane from the data plane. The
PXF architecture supports high-performance throughput with IP services enabled on every port.
When replacing a PRE1 module with a PRE2 module, you must also install EMI gaskets and RF absorber
Note
material. For more information, go to the following URL:
http://www.cisco.com/en/US/docs/cable/cmts/ubr10012/installation/field_replaceable_units/pre2gkit.h
tml

PRE Modules and PRE1 Modules

PRE1 modules support error checking and correction (ECC) for all onboard memory, replacing the
simpler parity error algorithm of the original PRE module. A general-purpose RISC processor (262–300
MHz MIPS RISCMark RM7000) support high performance Layer 3 forwarding of traffic. The
OL-18259-09
Figure 1-9.
LCD Cable
end
PRE1 functionality was introduced in Cisco IOS Release 12.2(4)XF.
PRE2 functionality was introduced in Cisco IOS Release 12.3(9a)BC.
PRE4 functionality was introduced in Cisco IOS Release 12.2(33)SCB.
Cisco uBR10012 Universal Broadband Router Modules
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide
Back plane
end
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