High Availability; Virtualization Support; Licensing Requirements For Object Tracking; Prerequisites For Object Tracking - 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 .
See the
information on track lists.

High Availability

Object tracking supports high availability through stateful restarts. A stateful restart occurs when the
object tracking process crashes. Object tracking also supports stateful switchover on a dual supervisor
system. Cisco NX-OS applies the runtime configuration after the switchover.
You can also use object tracking to modify the behavior of a client to improve overall network
availability.

Virtualization Support

Object tracking supports Virtual Routing and Forwarding (VRF) instances. VRFs exist within virtual
device contexts (VDCs). By default, Cisco NX-OS places you in the default VDC and default VRF
unless you specifically configure another VDC and VRF. By default, Cisco NX-OS tracks the route
reachability state of objects in the default VRF. If you want to track objects in another VRF, you must
configure the object to be a member of that VRF (see the
VRF" section on page
For more information, see the Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration
Guide, Release 4.x and see

Licensing Requirements for Object Tracking

The following table shows the licensing requirements for this feature:
Product License Requirement
NX-OS Object tracking requires no license. Any feature not included in a license package is bundled with the Cisco
NX-OS system images and is provided at no extra charge to you. For a complete explanation of the NX-OS
licensing scheme, see the Cisco NX-OS Licensing Guide.

Prerequisites for Object Tracking

Object tracking has the following prerequisite:
•

Guidelines and Limitations

Object tracking has the following guidelines and limitations:
•
•
OL-20002-02
"Configuring an Object Track List with a Boolean Expression" section on page 21-6
21-12).
Chapter 14, "Configuring Layer 3 Virtualization."
If you configure VDCs, install the Advanced Services license and enter the desired VDC (see the
Cisco Nexus 7000 Series NX-OS Virtual Device Context Configuration Guide, Release 4.x).
Supports up to 500 tracked objects per VDC.
Supports Ethernet, subinterfaces, tunnels, port channels, loopback interfaces, and VLAN interfaces.
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
Licensing Requirements for Object Tracking
"Configuring Object Tracking for a Nondefault
for more
21-3