vSphere 6.0: Creating a vSphere Distributed Switch and Portgroup (Part-5)

In pervious post of this series, we learned some about what is vSphere Distributed Switch, its benefits, features, and architecture. In this post, we’ll learn how to create vSphrere Distributed Switch (vDS) and Portgroup? If you missed previous posts of this series, you can follow:

  1. Introduction to vSphere Standard Switch (vSS)
  2. How to Create Standard Switch (vSS)
  3. Configuring vSphere Standard Switch Policies
  4. Introduction to vSphere Distributed Switch

VMware vSphere Distributed Switch (VDS) provides a centralized VM network administration and that eases the management burden by treating the network as an aggregated resource. vDS consists of two logical sections that are the data plane and the management plane. The data plane implements the package switching, filtering, tagging, and so on. The management plane is the control structure that you use to configure the data plane functionality.

A vSphere Distributed Switch (vDS) separates the data plane and the management plane. The management functionality of the distributed switch resides on the vCenter Server system that lets you administer the networking configuration of your environment on a data center level. The data plane remains locally on every host that is associated with the distributed switch. The data plane section of the distributed switch is called a host proxy switch. The networking configuration that you create on vCenter Server (the management plane) is automatically pushed down to all host proxy switches (the data plane).

Creating a Distributed Switch

vSphere Distributed Switch (vDS) is created on a data center to handle the networking configuration of multiple hosts at the same time from a central place.

Let’s start the process:

Step 1: Login to vSphere Web Client using your credentials, click Host and Clusters, right click on your datacenter, click on Distributed Switch, and click New Distributed Switch.

creating vDS

Step 2: Choose name for your new Distributed Switch and click Next.

new vDS

Step 3: Select a Distributed Switch version and click Next.

Step 4: At this step, you’ll need to configure some settings.

Configure uplinks (used to connect with outer network) as per your requirements.

Enable or disable Network I/O Control (NIOC divides the traffic into resource pools which used to isolate network traffic/resources).

Create default port group and enter a Port group name.

Click Next to proceed.

Step 5: Review all the configurations, and click Finish.

Distributed switch created successfully after clicking finish button. By clicking on newly created vDS (DSwitch1), its configuration can be seen.

Multicast Filtering Mode

vSphere Distributed Switch (vDS) supports two modes for filtering multicast packets:

  1. Basic         2.  Snooping

1.Basic Multicast Filtering Mode

In this mode, a VM sends out Internet Group Management Protocol (IGMP) request through the network, indicating the VM’s intention of joining a particular multicast group. It is a default mode for multicast filtering.

2. Snooping Multicast Filtering Mode

In this mode, vDS dynamically detects the membership of a VM. When a VM sends a packet that contains IGMP and MLD membership information through a switch port, the vDS snoops the packet and creates a mapping entry. This entry records the destination IP address of the multicast group. A VM can receive multicast traffic on a single switch port from up to 256 groups and 10 sources.

 

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