User's Manual

44-7
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 44 Configuring HSRP
Configuring HSRP
Beginning in privileged EXEC mode, follow these steps to create or enable HSRP on a Layer 3 interface:
Use the no standby [gr
oup-number] ip [ip-address] interface configuration command to disable HSRP.
This example shows how to activate HSRP for group 1 on an interf
ace. The IP address used by the hot
standby group is learned by using HSRP.
Note This procedure is the minimum number of steps required to enable HSRP. Other configuration is
optional.
Switch# configure terminal
Switch(config)# interface gigabite
thernet1/0/1
Switch(config-if)# no switchport
Switch(config-if)# standby 1 ip
Switch(config-if)# end
Switch# s
how standby
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Enter interface configuration mode, and enter the Layer 3 interface on
which you want to enable HSRP.
Step 3
standby version {1 | 2} (Optional) Configure the HSRP version on the interface.
• 1— Select HSRPv1.
• 2— Select HSRPv2.
If you do not enter this command or do not specify a keyword, the
int
erface runs the default HSRP version, HSRP v1.
Step 4
standby [group-number] ip [ip-address
[secondary]]
Create (or enable) the HSRP group using its number and virtual IP
address.
• (Optional) group-number—The group number on the interface for
which HSRP is being enabled. The range is 0 to 255; the default is 0.
If there is only one HSRP group, you do not need to enter a group
number.
• (Optional on all but one interface) ip-address—The virtual IP address
of the hot standby router interface. You must enter the virtual IP
address for at least one of the interfaces; it can be learned on the other
interfaces.
• (Optional) secondary—The IP address is a secondary hot standby
router interface. If neither router is designated as a secondary or
standby router and no priorities are set, the primary IP addresses are
compared and the higher IP address is the active router, with the next
highest as the standby router.
Step 5
end Return to privileged EXEC mode.
Step 6
show standby [interface-id [group]] Verify the configuration.
Step 7
copy running-config startup-config (Optional) Save your entries in the configuration file.