Physical And Functional Description Of The Router - Cisco XR 12404 Installation Manual

Chapter 1 Cisco XR 12404 Router Overview

Physical and Functional Description of the Router

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The Cisco XR 12404 router supports up to 8 chassis in a one standard 7-foot
(2.15 meter) rack and has the following key features:
Route processor (PRP-2)—The primary route processor is installed in it's
•
own dedicated slot. A redundant route processor can go in any line card slot.
See the "Route Processor" section on page 1-4
Line cards—The card cage contains 4 hot-swappable card slots. The router
•
can accommodate up to three OC-192 line cards (or 2 line cards if redundant
route processors are installed). See the
page 1-19 for information.
Consolidated switch fabric card (CSF)—Switch fabric, alarm, and clock
•
schedule functions are located on one board. The CSF card has a switching
capacity of 10 Gbps. See the
page 1-21 for information.
AC power entry module (PEM)—A customized and hot-swappable one-piece
•
unit. See the "Power Entry Modules" section on page 1-23
DC power entry module (PEM) and DC power distribution unit (PDU)—Two
•
pieces that can be removed as one unit or in separate pieces. See the
Entry Modules" section on page 1-23
When operating the router, both power module bays must have DC PEMs
Note
and DC PDUs installed to ensure EMI compliance.
Fan tray assembly—Supplies cooling air to the router. See the
•
Assembly" section on page 1-26
Cable management bracket used to neatly route line card cables. See the
•
"Cable Management System" section on page 1-28
Maintenance Bus—Controls all of the MBus modules in the system. See the
•
"Maintenance Bus" section on page 1-31
Physical and Functional Description of the Router
for information.
"Supported Line Cards" section on
"Consolidated Switch Fabric Card" section on
for information.
for information.
for information.
Cisco XR 12404 Router Installation Guide
for information.
"Power
"Fan Tray
for information.
1-3