Guidelines And Limitations; Configuring 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 .
•
•

Guidelines and Limitations

HSRP has the following guidelines and limitations:
•
•
•
•
•
•
•
•
Configuring HSRP
This section includes the following topics:
•
•
•
•
•
•
•
•
•
If you are familiar with the Cisco IOS CLI, be aware that the Cisco NX-OS commands for this feature
Note
might differ from the Cisco IOS commands that you would use.
OL-20002-02
You must enable the HSRP feature in a device before you can configure and enable any HSRP
groups.
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).
You must configure an IP address for the interface that you configure HSRP on and enable that
interface before HSRP becomes active.
The virtual IP address must be in the same subnet as the interface IP address.
We recommend that you do not configure more than one first-hop redundancy protocol on the same
interface.
HSRP version 2 does not interoperate with HSRP version 1. An interface cannot operate both
version 1 and version 2 because both versions are mutually exclusive. However, the different
versions can be run on different physical interfaces of the same router.
You cannot change from version 2 to version 1 if you have configured groups above the group
number range allowed for version 1 (0 to 255).
Cisco NX-OS removes all Layer 3 configuration on an interface when you change the interface VRF
membership, port channel membership, or when you change the port mode to Layer 2.
If you configure virtual MAC addresses with vPC, you must configure the same virtual MAC
address on both vPC peers.
You cannot use the HSRP MAC address burned-in option on a VLAN interface that is a vPC
member.
Enabling the HSRP Feature, page 19-8
Configuring an HSRP Group, page 19-8
Configuring the HSRP Version, page 19-10
Configuring the HSRP Virtual MAC Address, page 19-10
Authenticating HSRP, page 19-11
Configuring HSRP Object Tracking, page 19-12
Configuring the HSRP Priority, page 19-14
Customizing HSRP, page 19-15
Configuring Extended Hold Timers for HSRP, page 19-16
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
Guidelines and Limitations
19-7