System information

CHAPTER
Troubleshooting Hardware and Booting Problems 3-17
3
Troubleshooting Hardware and
Booting Problems
This chapter provides procedures for troubleshooting hardware and booting problems. Although it
provides specific procedures for some Cisco products, always refer to your hardware installation and
maintenance publication for more detailed information about your specific platform, including
descriptions of specific LEDs, configuration information, and additional troubleshooting
information.
This chapter begins with the following sections on hardware problems:
• Cisco 7500 Series Startup—Describes hardware and boot process troubleshooting
for Cisco 7500 series routers
• Cisco 7000 Series Startup—Describes hardware and boot process troubleshooting
for Cisco 7000 series routers
• Cisco 4000 and Cisco 3000 Series Startup—Describes hardware and boot process
troubleshooting for Cisco 4000 and Cisco 3000 series routers
• Cisco 2500 Series Startup—Describes hardware and boot process troubleshooting
for Cisco 2500 series routers
• Cisco 2000 Series Startup—Describes hardware and boot process troubleshooting
for Cisco 2000 series routers
• Catalyst 5000 Series Startup—Describes hardware and boot process troubleshooting
for Catalyst 5000 series LAN switches
• Catalyst 3000 Series Startup—Describes hardware and boot process troubleshooting
for Catalyst 3000 series LAN switches
• Catalyst 2900 Series Startup—Describes hardware and boot process troubleshooting
for Catalyst 2900 series LAN switches
• Catalyst 1600 Token Ring Switch Startup—Describes hardware and boot process
troubleshooting for Catalyst 1600 Token Ring LAN switches
• LightStream 2020 Startup—Describes hardware and boot process troubleshooting for
LightStream 2020 ATM switches
• Testing and Verifying Replacement Parts—Provides suggested actions when swapping router
hardware
The remaining sections describe symptoms, problems, and solutions for Flash boot, netboot, ROM
boot, and other bootup problems:
• Booting: Router Fails to Boot from Flash Memory
• Booting: Vector Error Occurs When Booting from Flash Memory