H3C Technologies H3C SecBlade LB Cards - Manual (Page 51)

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Figure 33 Statistics
Load balancing configuration examples
Layer 4 IPv4 server load balancing configuration example
Network requirements
As shown in Figure 34 , three servers Server A, Server B, and Server C can provide HTTP services. Server
A has the highest hardware configuration, and Server B the second. Enable these three servers to provide
HTTP services together, and all HTTP traffic is required to be filtered by the LB product.
Cluster provides HTTP service. Layer 4 server load balancing should be applied.
All traffic will pass the LB product: NAT-mode server load balancing (Responses in DR mode do not pass
the LB product).
The performance of the three servers is different and therefore weighted round robin algorithm is
adopted.