Licensing Requirements For Hsrp; Prerequisites For Hsrp; Guidelines And Limitations; Default Settings - Cisco Nexus 3000 Series Configuration Manual

Licensing Requirements for 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 3 k - d o c f e e d b a c k @ c i s c o . c o m
Licensing Requirements for HSRP
The following table shows the licensing requirements for this feature:
Product License Requirement
Cisco NX-OS HSRP 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 Cisco NX-OS
licensing scheme, see the Cisco NX-OS Licensing Guide.
Make sure the LAN Base Services license is installed on the switch to enable Layer 3 interfaces.
Note

Prerequisites for HSRP

HSRP has the following prerequisites:
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Guidelines and Limitations

HSRP has the following configuration guidelines and limitations:
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Default Settings

Table 12-1
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, NX-OS Release 5.0(3)U1(1)
12-6
You must enable the HSRP feature in a switch before you can configure and enable any HSRP
groups.
The minimum hello timer value is 250 milliseconds.
The minimum hold timer value is 750 milliseconds.
You must configure an IP address for the interface that you configure HSRP on and enable that
interface before HSRP becomes active.
For IPv4, 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.
lists the default settings for HSRP parameters.
Chapter 12 Configuring HSRP