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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 N8406-023
1Gb Intelligent L3 Switch Application Guide.
The following table describes the basic VRRP Configuration commands. The following sections provide more
detailed information and commands.
Table 147 VRRP Configuration commands
Command
router vrrp
enable
no enable
show ip vrrp
VRRP Virtual Router configuration
Virtual Router commands are used for configuring up to 255 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.
Virtual routers are disabled by default.
The following table describes the Virtual Router Configuration commands.
Table 148 Virtual Router Configuration commands
Command
virtual-router <1-255>
virtual-router-id <1-255>
virtual-router <1-255>
address <IP address>
Description
Enter VRRP configuration mode.
Command mode: Router VRRP
Globally enables VRRP on this switch.
Command mode: Router VRRP
Globally disables VRRP on this switch. This is the default.
Command mode: Router VRRP
Displays the current VRRP parameters.
Command mode: All except User EXEC
Description
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:
virtual router ID
one that shares the same
combination.
vrid
The
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 255.
The default value is 1.
virtual router ID
All
values must be unique within the VLAN to which
the virtual router's IP interface belongs.
Command mode: Router VRRP
Defines the IP address for this virtual router using dotted decimal notation.
This is used in conjunction with the
virtual router on each participating VRRP device. The default address is
0.0.0.0
Command mode: Router VRRP
N8406-023 1Gb Intelligent L3 Switch Command Reference Guide (ISCLI) 129
address
and
vrid
(above) to configure the same
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