DELL N3000 User Manual

Configuring VRRP

This chapter describes how to configure Virtual Routing Redundancy 

Protocol (VRRP) on the switch. VRRP can help create redundancy on 

networks in which end-stations are statically configured with the default 

gateway IP address.
The topics covered in this chapter include:

• VRRP Overview
• Default VRRP Values
• Configuring VRRP Features (Web)
• Configuring VRRP Features (CLI)
• VRRP Configuration Example

The Virtual Router Redundancy (VRRP) protocol is designed to handle 

default router (L3 switch) failures by providing a scheme to dynamically elect 

a backup router. VRRP can help 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. 

VRRP eliminates the single point of failure associated with static default 

routes by enabling a backup router to take over from a master router without 

affecting the end stations using the route. The end stations will use a virtual 

IP address that will be recognized by the backup router if the master router 

fails. Participating routers use an election protocol to determine which router 

is the master router at any given time. A maximum of 50 virtual routers may 

This feature is not available on N2000 switches.