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Cisco 2900 Series and 3900 Series Hardware Installation Guide
CONTENTS
CHAPTER
1
Overview of the Routers 1-1
Chassis Views 1-2
Cisco 2901 Chassis 1-2
Cisco 2911 Chassis 1-4
Cisco 2921 and Cisco 2951 Chassis 1-6
Cisco 3900 Series Chassis 1-8
Locating the Serial Number, PID, VID and CLEI 1-12
Labels on Cisco 2901 1-13
Labels on Cisco 2911 1-14
Labels on Cisco 2921 and Cisco 2951 1-14
Labels on Cisco 3925 and Cisco 3945 1-15
For Additional Help Locating Labels on the Router 1-16
Hardware Features 1-16
Built-in Interface Ports 1-16
Gigabit Ethernet Ports 1-17
USB Serial Console Port 1-17
Removable and Interchangeable Modules and Cards 1-18
Services Performance Engine 1-20
Service Modules 1-20
Enhanced High-Speed WAN Interface Cards 1-20
Integrated Service Modules 1-21
Packet Voice Data Modules 1-21
Memory 1-21
Power Supplies 1-23
Module and Router Power Consumption 1-24
Fans, Ventilation, and Airflow 1-24
Real-Time Clock 1-26
Secure Key 1-27
Cryptographic Accelerator 1-27
Slot, Port, and Interface Information 1-27
LED Indicators 1-29
Specifications 1-32
Periodic Inspection and Cleaning 1-46