Configuring An Object Tracking Delay - Cisco Nexus 7000 Series Configuration Manual

Chapter 21 Configuring Object Tracking
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .

Configuring an Object Tracking Delay

You can configure a delay timer for a tracked object or an object track list that delays when the object
or list triggers a stage change. The tracked object or track list starts the delay timer when a state change
occurs but does recognize a state change until the delay timer reaches zero. At that point, Cisco NX-OS
checks the object state again and records a state change only if the object or list currently has a changed
state. Object tracking ignores any intermediate state changes before the delay timer expires.
For example, for an interface line-protocol tracked object that is in the up state with a 20 second delay
timer, the delay timer starts when the line protocol goes down. The object is not in the down state unless
the line protocol is down 20 seconds later.
You can configure independent up delay timers and down delay timers for a tracked object or track list.
When you delete the delay timer, object tracking deletes both the up and down delay timers.
You can change the delay timer at any point. IF the object or list is already counting down the delay timer
from a triggered event, the new delay timer is computed as the following:
BEFORE YOU BEGIN
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1.
2.
3.
4.
5.
DETAILED STEPS
Command
Step 1
config t
Example:
switch# config t
switch(config)#
Step 2
track object-id { parameters }
Example:
switch(config)# track 2 ip route
192.0.2.0/8 reachability
switch(config-track)#
OL-20002-02
New delay timer value + current timer countdown - old delay timer value
config t
track object-id {parameters}
or
track track-number list {parameters}
delay {up up-time [down down-time] | down down-time [up up-time]}
show track
copy running-config startup-config
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
Purpose
Enters configuration mode.
Creates a tracked object for a route and enters tracking
configuration mode. The object-id range is from 1 to
500. The prefix format for IP is A.B.C.D/length, where
the length range is from 1 to 32. The prefix format for
IPv6 is A:B::C:D/length, where the length range is
from 1 to 128.
Configuring Object Tracking
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