Field-replaceable units – Cisco 7200 VXR User Manual
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1-10
Cisco 7200 VXR Installation and Configuration Guide
OL-5013-09
Chapter 1 Cisco 7200 VXR Product Overview
Field-Replaceable Units
Adjacent to the power supply bays are two chassis grounding receptacles that provide a chassis ground
connection for ESD equipment or a two-hole grounding lug. (See
.)
Three internal fans draw cooling air into the chassis and across the internal components to maintain an
acceptable operating temperature. (See
.) The three fans are enclosed in a tray that is located
inside the chassis.
Caution
To ensure the proper flow of cooling air across the internal components, make sure blank port adapters
are installed in unoccupied port adapter slots, and power supply filler plates are installed in unoccupied
power supply bays.
The I/O controller, port adapters, Port Adapter Jacket Card, power supplies, and network processing
engine or network services engine slide into their respective chassis slots and connect directly to the
router’s midplane; there are no internal cables to connect. The midplane distributes power from the
power supplies to the I/O controller, port adapters, Port Adapter Jacket Card, fan tray, and network
processing engine or network services engine.
The midplane also senses OIR of the port adapters, bridges the PCI buses from the port adapters to
packet memory on the network processing engine or network services engine, arbitrates traffic across
the PCI buses, and generates the clock signals for the port adapters on each PCI bus.
Note
The Port Adapter Jacket Card does not support OIR. However, the port adapter installed in the Port
Adapter Jacket Card does support OIR.
The Cisco 7206VXR operates as either a tabletop or a rack-mounted unit. A rack-mount kit is standard
equipment included with all Cisco 7200 VXR routers when they are shipped from the factory. The kit
provides the hardware needed to mount the router in a standard 19-inch equipment rack or a 2-post rack.
Steps for installing the Cisco 7206VXR router in an equipment rack are the same for all Cisco 7200
VXR routers and are explained in Chapter 3, “
Installing a Cisco 7200 VXR Router
.” If you are not
rack-mounting your Cisco 7206VXR, place it on a sturdy tabletop or platform.
A fully configured Cisco 7206VXR, with two installed power supplies and all chassis slots filled, weighs
approximately 50 pounds (22.7 kilograms [kg]). For clearance requirements and rack-mount installation
considerations, see
Chapter 2, “Preparing for Installation,”
the
“Site Requirement Guidelines” section
on page 2-3
.
Field-Replaceable Units
The Cisco 7200 VXR routers are easy to service; many of their major components are field-replaceable
units (FRUs). The following sections describe Cisco 7200 VXR router FRUs:
•
Network Processing Engine or Network Services Engine, page 1-11
•
Input/Output Controller, page 1-32
•
•
Port Adapters and Service Adapters, page 1-47
•
Port Adapter Jacket Card, page 1-48
•
•
•
CompactFlash Disks, Flash Disks, and PC Cards, page 1-52