ESXi Network Configuration and Traffic Segmentation

Overview

In this project, I configured the networking on an ESXi host to separate management traffic from virtual machine traffic. I created a dedicated virtual switch for VM networking, assigned physical NICs to separate network traffic, and configured port groups to control how virtual machines connect to the network.

Objectives

• Separate ESXi management traffic from virtual machine traffic.

• Assign dedicated physical NICs to management and VM networks.

• Configure virtual switches and port groups for virtual machine networking.

• Support VLAN configuration where required.

• Improve network isolation and simplify network management.

Technologies Used

• VMware ESXi

• VMware vCenter Server

• vSphere Standard Switches (vSwitches)

• Port Groups

• Physical Network Interface Cards (NICs)

• VLANs

• Physical Network Switches

Configurations

ESXi networking operates in a virtualized environment. To configure the network for the VMs, I separated management traffic from VM traffic, assigned VLANs where required, and distributed traffic across different physical NICs.

Below are the main network configurations I applied to the ESXi host.

Management Network

The management network allows remote access to the ESXi host and communication with vCenter Server, which is used to centrally manage multiple ESXi hosts in a data center.

To isolate management traffic from VM traffic and maintain remote management access, I configured a dedicated physical NIC for the management network. I also planned the network connectivity around the specific switch ports and VLAN settings required for management traffic.

First, I created a new virtual switch and assigned the second physical NIC to it to separate VM network traffic physically from management traffic.

Then, I created a new port group on the newly added virtual switch to provide network connectivity for the VMs.

Finally, I edited the network settings of the existing VMs and assigned their virtual NICs to the newly created port group.

As a result, the original vSwitch remained dedicated to management traffic through its assigned physical NIC, while the new vSwitch handled VM traffic through a separate physical NIC. VLAN settings were configured where required.