Today , I want to build redundant system by using this topology. I have 2 Switches and 2 Load Balancer (Member-1 and Member 2). The Load Balancers are connected to Many Web Servers. The Hard part is how to connect 2 Switches to 1 Load balancers and make the cable redundant for another cable. My Load Balancer’s OS is Ubuntu 12.04 LTS , so i choose ifenslave to do Link Aggregation.