Apparatus and method for routing a transaction based on a requested level of service

摘要

An apparatus and method for routing a transaction to a server based on a requested level of service associated with the transaction. The transaction is preferably packetized and the requested level of service is indicated by a service tag associated therewith as part of the packetized transaction. A load balancer monitors the service level provided by each server in a server pool and generates a server index. The server index at least identifies each server and the corresponding service level. When the transaction is received at the load balancer, the service tag is read to determine the requested level of service. The load balancer selects a server from the server pool using the server index to determine which server is best providing the requested level of service and the transaction is then directed to that server. Alternatively, the load balancer can direct the transaction to a server within a group of servers that best provides the requested level of service.