Document Organization

This manual is divided into several parts. Each part describes the most common tasks for monitoring a particular interface, and the individual chapters within a part describe one or more step-by-step procedures for each task.

This manual contains the following parts:

• Preface, About This Guide (this chapter), provides a brief description of the contents and organization of this manual and describes how to contact customer support.
• Part 1, "Overview of Interfaces," provides an overview of interfaces supported by Juniper Networks, and the basic strategies for monitoring and troubleshooting an interface.
• Part 2, "Investigate T1 Interfaces," describes steps you use to monitor T1 interfaces and isolate T1 interface problems. Also included is information about the most common T1 interface alarms and errors.
• Part 3, "Investigate T3 Interfaces," describes steps you use to monitor T3 interfaces and isolate T3 interface problems. Also included is information about the most common T3 interface alarms and errors.
• Part 4, "Investigate ATM Interfaces," describes steps you use to monitor ATM interfaces and isolate ATM interface problems. Also included is information about the most common ATM interface alarms and errors.
• Part 5, "Investigate SONET Interfaces," describes steps you use to monitor SONET interfaces and isolate SONET interface problems. Also included is information about the most common SONET interface alarms and errors.
• Part 6, "Investigate Fast Ethernet and Gigabit Ethernet Interfaces," describes steps you use to monitor Fast Ethernet and Gigabit Ethernet interfaces and isolate Fast Ethernet and Gigabit Ethernet interface problems. Also included is information about the most common Fast Ethernet and Gigabit Ethernet interface alarms and errors.
• Part 7, "Investigate Channelized Interfaces," describes steps you use to monitor Multichannel DS-3 interfaces and isolate Multichannel DS-3 interface problems. Also included is information about the most common Multichannel DS-3 interface alarms and errors.

This manual also contains a complete index. For a list and description of glossary terms, see the JUNOS Comprehensive Index and Glossary.