Command Reference Guide

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Virtual Router Redundancy Protocol configuration
Virtual Router Redundancy Protocol (VRRP) support on this switch provides redundancy between routers
in a LAN. This is accomplished by configuring the same virtual router IP address and ID number on each
participating VRRP-capable routing device. One of the virtual routers is then elected as the master,
based on a number of priority criteria, and assumes control of the shared virtual router IP address. If the
master fails, one of the backup virtual routers will assume routing authority and take control of the virtual
router IP address.
By default, VRRP is disabled. For more information on VRRP, see the ―High Availability‖ chapter in the
N8406-026 10Gb Intelligent L3 Switch Application Guide.
The following table describes the basic VRRP Configuration commands. The following sections provide
more detailed information and commands.
Table 148 VRRP Configuration commands
Command
Description
router vrrp
Enter VRRP configuration mode.
Command mode: Global configuration
enable
Globally enables VRRP on this switch.
Command mode: Router VRRP
no enable
Globally disables VRRP on this switch. This is the default.
Command mode: Router VRRP
show ip vrrp
Displays the current VRRP parameters.
Command mode: All
VRRP Virtual Router configuration
Virtual Router commands are used for configuring virtual routers for this switch. A virtual router is defined
by its virtual router ID and an IP address. On each VRRP-capable routing device participating in
redundancy for this virtual router, a virtual router will be configured to share the same virtual router ID and
IP address.
The following table describes the Virtual Router Configuration commands.
Table 149 Virtual Router Configuration commands
Command
Description
virtual-router <1-250>
virtual-router-id <1-250>
Defines the virtual router ID. This is used in conjunction with addr
(below) to define a virtual router on this switch. To create a pool of
VRRP-enabled routing devices which can provide redundancy to each
other, each participating VRRP device must be configured with the
same virtual router: one that shares the same virtual router ID
and address combination.
The vrid for standard virtual routers (where the virtual router IP address
is not the same as any virtual server) can be any integer between 1
and 250. The default value is 1.
All virtual router ID values must be unique within the VLAN to
which the virtual router‘s IP interface belongs.
Command mode: Router VRRP
virtual-router <1-250>
address <IP address>
Defines the IP address for this virtual router using dotted decimal
notation. This is used in conjunction with the vrid (above) to configure
the same virtual router on each participating VRRP device.
Command mode: Router VRRP