![]() Let's assume that host A is using the BOOTP client on ephemeral port 1883, and host B (which is on the same network) is using MQTT client on the same port. The use of a well known port on the client's side is introduced to tackle the problem associated with this broadcast, which we will describe below. The server and the client communicate via broadcast and the server broadcasts the offered IP address to the client on UDP port 68. Table 3.DHCP is based on the earlier BOOTP protocol which uses well known port numbers for both server and client instead of an ephemeral port. The VMkernel networking layer provides connectivity to hosts and handles the system traffic for vSphere vMotion, IP storage, vSphere HA, vSAN, and others. Use the Route based on physical NIC load teaming algorithm for the vMotion Port Group. Reduces the complexity of the network design and increases resiliency and performance. Use the Route based on physical NIC load teaming algorithm for the management port group. This allows for historical data and port level monitoring. Static binding ensures a virtual machine connects to the same port on the vSphere Distributed Switch. Use static port binding for all non-management port groups. ![]() Port-level permissions and controls are lost across power cycles, and no historical context is saved. Using ephemeral port binding provides the option for recovery of the vCenter Server instance that is managing the distributed switch. Use ephemeral port binding for the management port group. Design Decisions on Distributed Port Groups This design uses an active-active configuration. See Overlay Design for NSX-T Data Center for the Management Domain.įor a predictable level of performance, use multiple network adapters in one of the following configurations.Īn active-passive configuration that uses explicit failover when connected to two separate switches.Īn active-active configuration in which two or more physical NICs in the server are assigned the active role. vSphere Distributed Switch Design for Management Domain As with uplink port groups, the configuration that you set on distributed port groups on vCenter Server (the management plane) is automatically propagated to all hosts on the distributed switch through their host proxy switches (the data plane). You configure NIC teaming, failover, load balancing, VLAN, security, traffic shaping, and other policies on distributed port groups. You identify each distributed port group by using a network label, which must be unique to the current data center. You set failover and load balancing policies over uplinks and the policies are automatically propagated to the host proxy switches, or the data plane.ĭistributed port groups provide network connectivity to virtual machines and accommodate VMkernel traffic. You map physical NICs of hosts to uplinks on the distributed switch. An uplink is a template that you use to configure physical connections of hosts as well as failover and load balancing policies. VSphere Distributed Switch introduces two abstractions that you use to create consistent networking configuration for physical NICs, virtual machines, and VMkernel traffic.Īn uplink port group or dvuplink port group is defined during the creation of the distributed switch and can have one or more uplinks. Distributed port groups define how a connection is made to a network. A distributed port group specifies port configuration options for each member port on a vSphere Distributed Switch.
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