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Router Redundancy Commands
4-315
4
Virtual Router Redundancy Protocol Commands
To configure VRRP, select an interface on one router in the group to serve as the
master virtual router. This physical interface is used as the virtual address for the
router group. Now set the same virtual address and a priority on the backup routers,
and configure an authentication string. You can also enable the preempt feature
which allows a router to take over as the master router when it comes on line.
vrrp ip
This command enables the Virtual Router Redundancy Protocol (VRRP) on an
interface and specify the IP address of the virtual router. Use the no form to disable
VRRP on an interface and remove the IP address from the virtual router.
Syntax
[no] vrrp group ip ip-address [secondary]
• group - Identifies the virtual router group. (Range: 1-255)
• ip-address - The IP address of the virtual router.
• secondary - Specifies additional secondary IP addresses assigned to the
current VLAN interface that are supported by this VRRP group.
Default Setting
No virtual router groups are configured.
Command Mode
Interface (VLAN)
Table 4-112 VRRP Commands
Command Function Mode Page
vrrp ip Enables VRRP and sets the IP address of the virtual router IC 4-315
vrrp authentication key Configures a key used to authenticate VRRP packets
received from other routers
IC 4-316
vrrp priority Sets the priority of this router in the VRRP group IC 4-317
vrrp timers advertise Sets the interval between successive advertisements by
the master virtual router
IC 4-318
vrrp preempt Configures the router to take over as master virtual router
for a VRRP group if it has a higher priority than the current
master virtual router
IC 4-318
show vrrp Displays VRRP status information PE 4-319
show vrrp interface Displays VRRP status information for the specified interface PE 4-321
show vrrp router counters Displays VRRP statistics PE 4-322
show vrrp interface counters Displays VRRP statistics for the specified interface PE 4-322
clear vrrp router counters Clears VRRP router statistics PE 4-323
clear vrrp interface counters Clears VRRP interface statistics PE 4-323