Cisco 7200 VXR User Manual page 2

Chapter 1 Cisco 7200 VXR Product Overview
Physical Description
The Cisco 7200 VXR routers are designed to support gigabit capabilities and to
improve data, voice, and video integration in both service provider and enterprise
environments.
The Cisco 7200 VXR routers incorporate an integrated Multiservice Interchange
(MIX) capability to support future voice applications. MIX interconnections on
the midplane provide the ability to switch DS-0 time slots between multichannel
T1 or E1 interfaces, much like a digital cross-connect or an add-drop multiplexer.
This feature enables the Cisco 7200 VXR routers to switch DS-0 voice channels
on a T1 or E1 interface from one voice processing port adapter to another voice
processing port adapter. It also enables DS-0s to be switched through the
Cisco 7200 VXR routers without any processing, a requirement in certain voice
configurations.
The Cisco 7200 VXR routers support a high-speed network services engine
(NSE) as well as the high-speed network processing engine, NPE-400, and all
other available network processing engines. The NSE-1 is a combination of a
high-performance RISC processor and high-performance PXF processor. The
PXF processor works with the routing processor to provide accelerated packet
switching, as well as accelerated IP Layer 3 feature processing.
The Cisco 7200 VXR routers also support high-speed network processing engines
(NPEs) to provide increased routing and process switching performance.
The Cisco 7200 VXR routers with the NSE-1 and NPE-400 installed support both
25-MHz and 50-MHz port adapter operation.
For port adapter configuration information, refer to the Cisco 7200
Note
Series Port Adapter Configuration Guidelines publication.
The Cisco 7200 VXR routers accommodate a variety of network interface port
adapters and an I/O controller. A Cisco 7200 VXR router equipped with an NSE-1
or NPE-400 can support up to six high-speed port adapters and can also support
higher-speed port adapter interfaces including Gigabit Ethernet and OC-12 ATM.
The Cisco 7200 VXR routers also contain bays for up to two AC-input or
DC-input power supplies.
The port adapters, I/O controller, and power supplies are the same for all
Cisco 7200 series routers and are described in the "Field-Replaceable Units"
section on page 1-13. The network processing engines and network services
engine are router model specific.
Cisco 7200 VXR Installation and Configuration Guide
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