ZyXEL Communications ZyXEL Dimension ES-4124 - Manual (Page 85)

ES-4124 Support Notes
All contents copyright (c) 2006 ZyXEL Communications Corporation.
85
Fault Free Protection
Overview of VRRP
Traditional network has one and only one gateway to put between internal
network and external network. When the link of router has some trouble, the
user can’t access to internet anymore. But when we enable VRRP,.if MASTER
router fails, and the BACKUP router will take over, and ensure the traffic still go
through.
VRRP (Virtual Redundancy Routing Protocol) provides a fail-over solution to
increase network high availability and prevent single point of failure. Basically,
VRRP utilizes two or more switches to work together. The master switch
x
Without VRRP
With VRRP
Master Backup
x