Hsrp Configuration Guidelines - Cisco IE-4000 Software Configuration Manual

Chapter Configuring HSRP and VRRP
Table 47-62
Feature
Standby group number
Standby MAC address
Standby priority
Standby delay
Standby track interface priority
Standby hello time
Standby holdtime

HSRP Configuration Guidelines

Follow these guidelines when configuring HSRP:
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Default HSRP Configuration
HSRP for IPv4 and HSRP for IPv6 are mutually exclusive. You cannot enable both at the same time.
HSRPv2 and HSRPv1 are mutually exclusive. HSRPv2 is not interoperable with HSRPv1 on an
interface and the reverse.
You can configure up to 32 instances of HSRP groups.
If you configure the same HSRP group number on multiple interfaces, the switch counts each
interface as one instance:
For example, if you configure HSRP group 0 on VLAN 1 and on port 1, the switch counts this as
two instances.
In the configuration procedures, the specified interface must be a Layer 3 interface:
Routed port: a physical port configured as a Layer 3 port by entering the no switchport
–
interface configuration command.
SVI: a VLAN interface created by using the interface vlan vlan_id global configuration
–
command and by default a Layer 3 interface.
EtherChannel port channel in Layer 3 mode: a port-channel logical interface created by using
–
the interface port-channel port-channel-number global configuration command and binding
the Ethernet interface into the channel group. For more information, see the "Configuring
Layer 3 EtherChannels" section.
All Layer 3 interfaces must have assigned IP addresses.
Configure only one instance of an FHRP. The switches support HSRPv1, HSRPv2, and HSRP for
IPv6.
The version of an HSRP group can be changed from HSRPv2 to HSRPv1 only if the group number
is less than 256.
When configuring group numbers for HSRPv2 and HSRP for IPv6, you must use group numbers in
ranges that are multiples of 256. Valid ranges are 0 to 255, 256 to 511, 512 to 767, 3840 to 4095,
and so on.
Examples of valid and invalid group numbers:
If you configure groups with the numbers 2, 150, and 225, you cannot configure another group
–
with the number 3850. It is not in the range of 0 to 255.
Default Setting
0
System assigned as: 0000.0c07.acXX, where XX is the HSRP
group number
100
0 (no delay)
10
3 seconds
10 seconds
Cisco Industrial Ethernet 4000 Series Switch Software Configuration Guide
Configuring HSRP
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