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23-3
Catalyst 3550 Multilayer Switch Software Configuration Guide
78-11194-03
Chapter 23 Configuring HSRP
Configuring HSRP
Figure 23-1 Typical HSRP Configuration
Configuring HSRP
These sections include HSRP configuration information:
•
Default HSRP Configuration, page 23-4
•
Enabling HSRP, page 23-4
•
Configuring HSRP Group Attributes, page 23-6
•
Configuring HSRP Groups and Clustering, page 23-9
Note
If HSRP is enabled, the switch can recognize 16 additional MAC addresses, each associated with a
set of VLANs or routing interfaces.
In the following procedures, the specified interface must be one of these Layer 3 interfaces:
•
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.
Si
Si
Si
Host B
172.20.130.5
172.20.128.32
Host A
172.20.128.55
172.20.128.1
172.20.128.3
172.20.128.2
Virtual
router
Active
router
Standby
router
Router A
Router B
Stacked
Catalyst 3550 or
2900XL/3500XL
switches
Stacked
Catalyst 3550 or
2900XL/3500XL
switches
46650
Host C
Catalyst 3550 switches
with enhanced multilayer
software images