When you set up a network such as a local area network (LAN), providing a high-availability service is very important. High-availability is a state where a redundant system takes over at the time of failure to ensure business continuity. High-availability is also relevant when an excessive workload is off-loaded to a redundant system. High-availability can become significant in situations such as planned or unplanned downtime, load-balancing, and disaster recovery.
Within a network domain, high availability can be implemented at various levels, such as link, IP, and routers. Load balancers and routers play a significant role in providing a high-availability service. In Oracle Solaris, VRRP routers and ILB are the network-level failover and load-sharing mechanisms that provide high availability.
For more information about working with and configuring VRRP routers, see Using Virtual Router Redundancy Protocol. For more information about working with and configuring ILB, see Overview of an Integrated Load Balancer and Configuring and Managing the Integrated Load Balancer.