Objectives

This guide provides descriptions of the JUNOS software commands that you use to monitor and troubleshoot all interfaces on the router, including physical interfaces, service interfaces, the loopback interface, the management Ethernet interface, and the discard interface.

For additional commands, see these guides:

• JUNOS System Basics and Services Command Reference
• JUNOS Routing Protocols and Policies Command Reference
  

  NOTE: This guide documents Release 8.1 of the JUNOS Internet software. For additional information about the JUNOS software—either corrections to or information that might have been omitted from this reference—see the software release notes at http://www.juniper.net/.

  
  

For information about configuration statements and guidelines related to the commands described in this reference, see the following configuration guides:

• JUNOS Network Interfaces Configuration Guide—Includes configuration statements for all router interfaces.
• JUNOS Services Interfaces Configuration Guide—Includes configuration statements and guidelines for services interfaces and features.

For information about related tasks performed by Network Operations Center (NOC) personnel, see the JUNOS Interfaces Network Operations Guide.