You can trace the operations of individual router interfaces and you can trace the operations of the interface process (DCD). For a general discussion of tracing and of the precedence of multiple tracing operations, see "Tracing and Logging Operations" in the JUNOS Internet Software Configuration Guide: Installation and System Management.
This chapter discusses the following interface trace operation configuration tasks:
For information about the operations of VRRP-enabled interfaces, see Trace Operations on Interfaces on which VRRP is Enabled.