Troubleshooting Overview

This chapter provides an overview of the resources you can use while troubleshooting problems with the router:

• Command-Line Interface
• LEDs
• Hardware and Interface Alarm Messages
• Juniper Networks Technical Assistance Center

For information about troubleshooting problems with specific hardware components—including the cooling system, power supplies, and the Packet Forwarding Engine—see the subsequent chapters in this document. If you encounter problems with other router components, including the Routing Engine, contact the Juniper Networks Technical Assistance Center (JTAC) as described in Juniper Networks Technical Assistance Center.