With the rapid development of the Internet technologies, enterprises are tending to deliver their key service applications through the Internet, and their productivity are increasingly relying on the high reliability of the enterprise IT architecture and key application systems of the enterprise data centers. Therefore, enterprises are increasingly striving to ensure the availability of their key applications around the clock while minimizing the IT cost. To secure the service continuity and endusers’ satisfaction, the networks need to be reconstructed to effectively ensure the fast access by the users and evenly share the access traffic among the links and servers, thereby making full use of the link and server resources.

 

Current State of Application Delivery (AD)
Many enterprises and institutions are suffering from an unstable network that provides a low access speed. Generally, what lies behind is the ineffective utilization of the Internet bandwidth and server resources rather than the insufficient egress bandwidth.

1.   The enterprises have deployed multiple links, but the traditional routing devices are unable to smartly select the optimal access routes for the employees, thereby slowing down the network access.

2.  As we all know, the growth of the access users will pose increasing pressure on the servers. Even if a server cluster is used, the access addresses will be complicate and the load will not be evenly shared. In the server cluster, the traffic is randomly distributed among the servers, regardless of the current load of the servers, which may result in access failures.
                                              
SANGFOR AD Solution
SANGFOR addresses the preceding problems by:
1、 Taking advantage of the multi-link technologies. SANGFOR AD provides redundant backup and smart routing for the inbound (access to the internal server by the Internet) and outbound (access to the Internet by the internal terminal traffic).
2、 Taking advantage of the server resources.  SANGFOR AD smartly assigns the connections to the most appropriate servers. Moreover, with a health check mechanism, the AD monitors the health of the servers in real time. If a server fails, the AD smoothly switches the next connection of the users to a normal server.

3、 The AD ensures the stability and availability of the key applications of the enterprises and institutions. It also helps the enterprises and institutions understand the time and geographical distribution and access preference of the users with its business intelligence analysis function. This allows the enterprises and institutions to adjust and optimize their networks, logistics, business processes, product design, business strategies, and so on, to ensure a high customer satisfaction.

 

See the figure below.