High Availability

A reliable Internet connection has become a mission critical requirement for today's modern business. Internet connections today are used for accessing important real-time data for decision-making, reaching Ecommerce customers, connecting with business partners, and extending communications across the distributed enterprise.

The loss of this mission critical connection can have serious, and sometimes disastrous, consequences on an organization. The following applications are examples of the mission critical nature of an Internet connection today:

An Internet connection that provides customer access to an Ecommerce site. In this case, connection downtime results in lost revenue.   An Internet connection used to connect to business partners or an application service provider (ASP). Connection downtime can significantly disrupt business activities.   Internet connections that provide access to critical resources for remote offices, telecommuters and mobile workers. Connection downtime can result in lower productivity for remote users.

Given the mission critical nature of many Internet connections, each element of the Internet connection needs to be highly reliable. SonicWALL High Availability adds to the award-winning SonicWALL Internet security solution by assuring a highly reliable and secure connection to the Internet.

SonicWALL High Availability is standard on the SonicWALL PRO 300 and the GX product line and optional on the PRO 200. High Availability eliminates network downtime by allowing the configuration of two SonicWALLs (one primary and one backup) as a High Availability pair. In this configuration, the backup SonicWALL monitors the primary SonicWALL and takes over operation in the event of a failure. This ensures a secure and reliable connection between the protected network and the Internet.

Network Configuration for High Availability Internet Connection

All SonicWALL ports being used must be connected together with a hub or switch. Each SonicWALL must have a unique LAN IP Address on the same LAN subnet. If each SonicWALL has a unique WAN IP Address for remote management, the WAN IP Addresses must be in the same subnet.