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Help Center/ Elastic Load Balance/ FAQs/ Load Balancers/ How Does ELB Distribute Traffic?

How Does ELB Distribute Traffic?

Updated on 2022-09-21 GMT+08:00

ELB uses FullNAT to forward the incoming traffic. For load balancing at Layer 4, LVS forwards the incoming traffic to backend servers directly. For load balancing at Layer 7, LVS forwards the incoming traffic to Nginx, which then forwards the traffic to backend servers.

NOTE:

In FullNAT, LVS translates source IP addresses and destination IP addresses of the clients.

Figure 1 Load balancing at Layer 4
Figure 2 Load balancing at Layer 7
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