Router Installation and Configuration Guide

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Cisco 7201 Installation and Configuration Guide
OL-11364-04
Chapter 1 Overview
Cisco 7201 Hardware Overview
• Cache memory
The processor system has two levels of cache: primary and secondary cache that are internal to the
microprocessor with secondary unified cache for data and instruction.
• Four Gigabit Ethernet interfaces (six ports: four SFP [optical] and two RJ-45s [copper]). Only four
ports are available at the same time.
• One Fast Ethernet Management port
• A CompactFlash Disk for storing the default Cisco IOS software image
• Auxiliary port with full data terminal equipment (DTE) functionality
• Console port with full data communications equipment (DCE) functionality
• Boot ROM for storing sufficient code for booting the Cisco IOS software
• Flash memory for storing the boot helper (boot loader) image
• NVRAM for storing the system configuration and environmental monitoring logs. NVRAM uses
lithium batteries to maintain its contents when disconnected from power.
• Two environmental sensors for monitoring the internal temperature of the chassis
System Management Functions
The Cisco 7201 processor system performs 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 the port adapter (including recognition and initialization during online insertion and
removal)
The Cisco 7201 router supports multiprotocol, multimedia routing and bridging with a wide variety of
protocols and port adapters.