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Cisco 7200 VXR Installation and Configuration Guide
78-5469-03
Chapter 1 Cisco 7200 VXR Product Overview
Field-Replaceable Units
–
The NPE-300 has three levels of cache: a primary and a secondary cache
that are internal to the microprocessor, and a tertiary, 2-MB external
cache that provides additional high-speed storage for data and
instructions.
–
The NPE-400 has three levels of cache: a primary and a secondary cache
that are internal to the microprocessor, and a tertiary 4-MB external
cache that provides additional high-speed storage for data and
instructions.
–
The NSE-1 has three levels of cache: a primary and a secondary unified
cache that are internal to the microprocessor, and a tertiary, 2-MB
external cache.
• Two environmental sensors for monitoring the cooling air as it leaves the
chassis
• Boot ROM for storing sufficient code for booting the Cisco IOS software; the
NPE-175, NPE-200, NPE-225, NPE-300, NPE-400, and NSE-1 have boot
ROM.
The network processing engines and network services engine perform the
following system management functions:
• Sending and receiving routing protocol updates
• Managing tables, caches, and buffers
• Monitoring interface and environmental status
• Providing Simple Network Management Protocol (SNMP) management
through the console and Telnet interface
• Accounting for and switching of data traffic
• Booting and reloading images
• Managing port adapters (recognition and initialization during online insertion
and removal)
The following figures and memory tables provide information about your NPE or
NSE:
• NPE-100, NPE-150, and NPE-200 are represented by Figure 1-5, Figure 1-6,
and Figure 1-7. Table 1-2 lists the NPE-100, NPE-150, and NPE-200 memory
specifications, and Table 1-3 and Table 1-4 list memory configurations.
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