Cisco 7200 VXR router User Manual page 12

Physical Description
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 also support a high-speed network processing engine
(NPE-300) to provide increased routing and process switching performance. The
Cisco 7204VXR and Cisco 7206VXR both support the NPE-300 in addition to supporting
all available network processing engines. The NPE-300 is a high-performance
RISC processor—delivering up to 300-Kpps fast switching and 20-Kpps process
switching. The Cisco 7200 VXR routers with the NPE-300 installed support both 25-MHz
and 50-MHz port adapter operation.
Note
Adapter Configuration Guidelines document.
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 NPE-300 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 network processing engines, 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 12.
The Cisco 7200 VXR routers support the following features:
•
Online insertion and removal (OIR)—Allows you to add, replace, or remove port
adapters without interrupting the system.
•
Dual hot-swappable, load-sharing power supplies—Provide system power redundancy;
if one power supply or power source fails, the other power supply maintains system
power without interruption. Also, when one power supply is powered off and removed
from the router, the second power supply immediately takes over the router's power
requirements without interrupting normal operation of the router.
1-2 Cisco 7200 VXR Installation and Configuration Guide
For port adapter configuration information, refer to the Cisco 7200 Series Port