The basic concepts of ESXi networking and how to set up and configure a network in a vSphere environment are discussed. Networking Concepts OverviewA few concepts are essential for a thorough understanding of virtual networking. If you are new to ESXi, it is helpful to review these concepts. Network Services in ESXiA virtual network provides several services to the host and virtual machines. VLAN ConfigurationVirtual LANs (VLANs) enable a single physical LAN segment to be further isolated so that groups of ports are isolated from one another as if they were on physically different segments. VMware ESXi Dump Collector SupportThe ESXi Dump Collector sends the state of the VMkernel memory, that is, a core dump to a network server when the system encounters a critical failure.