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F5 Load Balancer Ebook

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other intellectual property right of F5 except as specifically described herein. .. Configuring virtual servers for VPN and router load balancing The 18 best load balancing ebooks, such as High Performance MySQL, Elastic Load F5 Networks Application Delivery Fundamentals Study Guide Load balancers are fast becoming an indispensable solution for handling the huge traffic. “In reality, as the load balancer is acting as a proxy it's not actually NAT; the inbound connection is terminated and a new outbound one created with a different.


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As the Times Changed, Have Load Balancers Moved with Them?

Filter By: The traffic that the client initializes will get to the Load-Balancer that has the virtual load-balanced IP. The load-sharing algorithm will pick a physical server to which the Load-Balancer will forward the traffic with destination IP NATed to the physical IP of the server and forward it out the same interface towards the physical server.

BUT the Load-balancer also needs to do source IP nat so that the server reply will go back from the server to the Load-Balancer and not directly back to the Client, who is not expecting a reply directly from physical server IP.

From the physical servers perspective, all the traffic is coming from Load-Balancer.. Once you understand the above paragraph, you understand the One-Arm solution fully.

In this scenario, Load-balancer only sees the incoming part of client-server traffic and all the returning traffic from physical servers is coming directly back to the client IP.

The biggest advantages of this solution is that there is no NAT and the Load-Balancer throughput is only used in one way, so less performance impact for the Load-Balancer system.

Disabling ARP on a physical server is not a difficult task.

Disadvantages however are that you have to manually configure the Load-Balancer with all the server MAC addresses and might be more difficult to troubleshoot with only one way traffic seen by the Load-Balancer on the whole L2 segment.

Sumamry I hope you enjoyed this super quick overview that tried to present the basic Load-Balancer scenarios that you can encounter out there.

Which Load-Balancer scenario do you prefer or what Load-Balancer configuration did you already deployed? Let us all know in the comments.Let us all know in the comments.

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