Cisco 500 series Administration Manual page 477

VRRP
Overview
NOTE
Cisco 500 Series Stackable Managed Switch Administration Guide
Constraints
VRRP is only supported on SG500X switches.
VRRP Topology
The following shows a LAN topology in which VRRP is configured. In this example,
Routers A, B and C are VRRP and comprise a virtual router. The IP address of the
virtual router is the same as that configured for the Ethernet interface of Router A
(198. 1 68.2. 1 ).
Basic VRRP Topology
Because the virtual router uses the IP address of the physical Ethernet interface of
Router A, Router A assumes the role of the virtual router master and is also known
as the IP address owner. As the virtual router master, Router A controls the IP
address of the virtual router and is responsible to route packets on behalf of the
virtual router. Clients 1 through 3 are configured with the default gateway IP
address of 198. 1 68.2. 1 . Client 4 is configured with the default gateway IP address
of 198. 1 68.2.2.
The VRRP router that is the IP address owner responds/processes packets whose
destination is to the IP address. The VRRP router that is the virtual router master, but
not the IP address owner, does not respond/process those packets.
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