T3700G-28TQ
JetStream 28-Port Gigabit Stackable L3 Managed Switch CLI Guide
334
Chapter 40 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.
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 vrrp vrid command
Syntax
vrrp vrid vrid
no 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-28TQ(config)#interface vlan 3
T3700G-28TQ(config-if)#vrrp vrid 4
To Next Page
Loading...
