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19-15
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 19 Configuring HSRP
Configuring HSRP
If the standby router priority falls below the lower threshold, HSRP sends all standby router traffic across
the vPC trunk to forward through the active HSRP router. HSRP maintains this scenario until the standby
HSRP router priority increases above the upper threshold.
To configure the HSRP priority, use the following command in interface configuration mode:
Customizing HSRP
You can optionally customize the behavior of HSRP. Be aware that as soon as you enable an HSRP group
by configuring a virtual IP address, that group is now operational. If you first enable an HSRP group
before customizing HSRP, the router could take control over the group and become the active router
before you finish customizing the feature. If you plan to customize HSRP, you should do so before you
enable the HSRP group.
To customize HSRP, use the following commands in HSRP configuration mode:
Command Purpose
priority
level
[forwarding-threshold lower
lower-value
upper
upper-value
]
Example:
switch(config-if-hsrp)# priority 60
forwarding-threshold lower 40 upper 50
Sets the priority level used to select the active
router in an HSRP group. The level range is from
0 to 255. The default is 100. Optionally, sets the
upper and lower threshold values used by vPC to
determine when to fail over to the vPC trunk. The
lower-value range is from 1 to 255. The default is
1. The upper-value range is from 1 to 255. The
default is 255.
Command Purpose
name
string
Example:
switch(config-if-hsrp)# name HSRP-1
Specifies the IP redundancy name for an HSRP group.
The string is from 1 to 255 characters. The default string
has the following format:
hsrp-<interface-short-name>-<group-id>. For example,
hsrp-Eth2/1-1.
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