JetStream 52-Port Gigabit Stackable L3 Managed Switch CLI Guide
Chapter 44 VRRP Commands
The Virtual Router Redundancy protocol is designed to handle default router failures by
providing a scheme to dynamically elect a backup router. The driving force was to minimize
“black hole” periods due to the failure of the default gateway router during which all traffic
directed towards it is lost until the failure is detected. Though static configuration of default
routes is popular, such an approach is susceptible to a single point of failure when the default
router fails. VRRP advocates the concept of a “virtual router” associated with one or more IP
addresses that serve as default gateways. In the event that the VRRP router controlling these
IP addresses (formally known as the Master) fails, the group of IP addresses and the default
forwarding role is taken over by a backup VRRP router.
44.1 ip vrrp vrid
Description
This command is used to enable the VRRP protocol on an interface and
designates a virtual router ID for it. To disable VRRP protocol of a specified
virtual router on an interface, please use no ip vrrp vrid command.
Syntax
ip vrrp vrid
vrid
no ip vrrp vrid
vrid
Parameter
vrid
—— The virtual router ID which has an integer value range from 1 to 255.
Command Mode
Interface Configuration Mode
Example
Enable the VRRP protocol on interface VLAN 3 and specify the vrid as 4:
T3700G-52TQ(config)#interface vlan 3
T3700G-52TQ(config-if)#ip vrrp vrid 4
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