Object Tracking And Hsrp; Vpc And Hsrp - Cisco Nexus 7000 Series Configuration Manual

Chapter 19 Configuring HSRP
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 .
Figure 19-2
User Group A
Default Gateway = 192.0.2.1
User Group B
Default Gateway = 192.0.2.2
Figure 19-2
A, but the standby router for group B. Similarly, router B is the active router for group B and the standby
router for group A. If both routers remain active, HSRP load balances the traffic from the hosts across
both routers. If either router fails, the remaining router continues to process traffic for both hosts.

Object Tracking and HSRP

You can use object tracking to modify the priority of an HSRP interface based on the operational state
of another interface. Object tracking allows you to route to a standby router if the interface to the main
network fails.
Two objects that you can track are the line protocol state of an interface or the reachability of an IP route.
If the specified object goes down, Cisco NX-OS reduces the HSRP priority by the configured amount.
For more information, see the

vPC and HSRP

HSRP interoperates with virtual port channels (vPCs). vPCs allow links that are physically connected to
two different Cisco Nexus 7000 series devices to appear as a single port channel by a third device. See
the Cisco Nexus 7000 Series NX-OS Layer 2 Switching Configuration Guide, Release 4.x for more
information on vPCs.
vPC forwards traffic through both the active HSRP router as well as the standby HSRP router. See the
"Configuring the HSRP Priority" section on page
OL-20002-02
HSRP Load Sharing
Router A
Router B
Group A = 192.0.2.1
Group B = 192.0.2.2
shows two routers A and B and two HSRP groups. Router A is the active router for group
"Configuring HSRP Object Tracking" section on page
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
Active
Standby
Standby
Active
19-14.
Information About HSRP
19-12.
19-5