Juniper JUNOSE 11.1.X - COMMAND REFERENCE N TO Z 4-6-2010 Command Reference Manual page 1367

track
track objectName [ vrf vrfName ] ip-route ipPrefix reachability
Syntax
no track objectName
Command introduced in JUNOSe Release 7.2.0.
Release Information
Specifies the name of an object you want to track and tracks the reachability of that
Description
object by its IPv4 prefix. The no version deletes the object and stops tracking for
that object.
Options
Global Configuration
Mode
objectName Name of the object you want to track; string of 1–32 alphanumeric
characters
vrfName Name of the VRF on which the object resides; string of 1–32
alphanumeric characters
ipPrefix IP prefix (address and subnetwork mask) of the object you want to
track
Chapter 8: T Commands
1325
track