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Introduction The VMware Avi Load Balancer enables traffic management through Datascripts. In this blog post, we’ll explore a specific use case where traffic from VMware Aria Operations Nodes is directed to specific VMware Cloud Director (VCD) cells, while regular user traffic is routed to different cells. This use case can be especially beneficial when a six cell design is being used. Use Case: Separate Traffic for Operations and Users In this scenario, the VMware Cloud Director setup consists of six cells, all sitting behind a single virtual IP (VIP). ...

Introduction Traffic emulators play a key role in testing the reliability and performance of networks. They are used to check the impact of high data traffic on the network infrastructure. This ensures that applications work in production and can withstand high loads. Not only applications, but also load balancers can be tested and sized accordingly with the help of traffic emulators. Load Balancer Basics Before we dive into the detailed installation of VMware TENS (Traffic Emulator for Network Service) and a specific use case, we will first explain the basics of a load balancer. Let’s start with the basic question: What is a load balancer? ...

Links are out of date. This post will be archived. Introduction We have probably all experienced it. We stood before an exam and didn’t know where to begin. What is the best learning method? Which learning materials are relevant? And how do I access my resources? Those challenges became especially noticeable as I prepared for my virtualization exam in my fourth semester. Although we had access to labs during that time, I wondered what would happen after the exam and how I could further enhance my skills. ...

Introduction While working with NSX Version 3.2.X together with Avi (ALB) and VMware Cloud Director, I encountered an unexpected behavior. Clients were not receiving responses from the configured load balancer VIP, and I was curious as to why. During my investigation using NSX Traceflow, I observed an unusual traffic pattern in the return path to the client. Although the NSX service insertion behaved as expected, I questioned why SNAT (Source Network Address Translation) was also triggered. It is worth noting that the load balancer virtual service is configured to preserve the client’s IP address. ...