Cisco 7200 VXR User Manual page 10

Field-Replaceable Units
Caution Do not mix power supplies in the Cisco 7206VXR. In dual power supply router configurations, both
power supplies must be of the same type (two AC-input power supplies or two DC-input power supplies).
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
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, 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, 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.
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,
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
on page
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:
•
•
•
•
•
•
•
•
Cisco 7200 VXR Installation and Configuration Guide
1-10
Chapter 2, "Preparing for Installation,"
2-3.
Network Processing Engine or Network Services Engine, page 1-11
Input/Output Controller, page 1-30
LED Descriptions, page 1-38
Port Adapters and Service Adapters, page 1-44
Power Supplies, page 1-45
Chassis, page 1-47
CompactFlash Disks, Flash Disks and PC Cards, page 1-48
Rack-Mount and Cable-Management Kit, page 1-49
Chapter 1
Figure 1-4.) The three fans are enclosed in a tray that is located
"Installing a Cisco 7200 VXR
the "Site Requirement Guidelines" section
Cisco 7200 VXR Product Overview
Figure 1-4.)
Router." If you are not
78-5469-04 B0