Configure and Manage Transport Zones

By | July 3, 2018

In this post, we will cover following topics of Objective 1.3 of VCAP6-NV Deploy Exam

Objective 1.3 – Configure and Manage Transport Zones

  • Create Transport Zones according to a deployment plan
  • Configure the control plane mode for a Transport Zone
  • Add clusters to Transport Zones
  • Remove clusters from Transport Zones

Create Transport Zones according to a deployment plan

The Transport Zone is a user defined scope for VXLAN networking traffic. Transport zones defines which hosts/clusters will be able to participate in VXLAN based virtual networking. Transport zones acts as a container to host logical switches and ESXi host uses these logical switches to communicate among themselves or with the underlying physical infrastructure.

The Transport Zone (TZ) determines how far a NSX Logical Switch can span, a boundary where ESXi hosts create tunnels among themselves for allowing VXLAN traffic to flow. E.g. you create a TZ called ‘DMZ TZ’ which you span across a limited number of hosts.

You might create another TZ that spans all clusters in the data centre; meaning any Logical Switches, Distributed Logical Routers or Edge Service Gateways connected to it are available data center-wide.

Clusters can be a member of multiple TZs.

Best practice is to make sure your TZs align to the vDS boundary, otherwise you can end up in a situation where VMs on a specific Logical Switch cannot access Distributed Logical Router (DLR) interfaces – as shown in this VMware diagram.

tz

To Create a Transport Zone (TZ), log into the vSphere Web Client.

Click Networking and Security, then Installation followed by the Transport Zones tab.

Click the + sign to add a new TZ, enter your information and click OK.

I am creating a TZ called ‘Global_TZ‘ that spans my Compute and Edge clusters.

tzs

Note: In the above diagram I have selected the default ‘Unicast‘ option for replication. The following section covers this.

You can now see the configured TZ.

tz5

Note: In a cross-vCenter NSX implementation make sure you select the correct NSX Manger to apply your changes.

Configure the Control Plane Mode for a Transport Zone

Control plane mode dictates how NSX will replicate the VXLAN data (VTEP, ARP and MAC etc) between ESXi hosts. There are three modes a transport zone can operate in:

tx99

Above is from the VMware NSX Installation Guide:

Offloading multicast processing to the physical network reduces pressure on the VTEPs as the environment scales out. For large environments, Hybrid mode is recommended to Unicast. Multicast is used only when migrating from existing VXLAN solutions.

Replication mode of a transport zone can be changed post creation as well. To change the replication mode of a TZ follow below steps:

a: Login to your vSphere Web Client and navigate to Networking & Security > Installation > Logical Network Preparation > Transport Zones

b: Right click the transport zone you want to modify and choose All NSX user interface plugin Actions > Edit Settings

c: Select the new replication mode for this transport zone.

Important: Make sure to select “Migrate existing Logical Switches to the new control plane mode” otherwise you will have a mix of replication modes; the existing Logical Switches will remain using the previous replication mode and newly created Logical Switches will start using the new replication mode.

Add clusters to Transport Zones

Newly created clusters are not included in a Transport Zone by default, you need to manually add any new clusters. To add a cluster to an existing Transport Zone, follow the below steps:

Log into the vSphere Web Client.

Click Networking and Security, then Installation followed by the Transport Zones tab.

Select the specific TZ that you want to add a cluster to.

Click the blue cog and select ‘Connect Clusters‘, then add the specific cluster you want.

add

Remove clusters from Transport Zones

Log into the vSphere Web Client.

Click Networking and Security, then Installation followed by the Transport Zones tab.

Select the specific TZ that you want to remove a cluster from.

Click the blue cog and select ‘Disconnect Clusters‘, then select the specific cluster you want to remove.

add

Read the relevant bits from the Install Guide and the Administration Guide.

In Next post we will cover: Objective 2.1 – Create and Manage Logical Switches

I hope this has been informative and thank you for reading! Be social and share it on social media, if you feel worth sharing it…!!!

Hello,

I am Rahul Sharma, I am currently working as Subject Matter Expert for SDDC and Cloud Infrastructure Services, Mainly on VMware Virtualization Platform.

I have 9 Year’s of IT experience and have expertise in Designing and Deploying of VMware vSphere, vSAN, vCloud Director, vRealize Automation, SRM, NSX  and modern data center technologies like vBlock, Cisco UCS, DELL, HPE C7000, HPE Synergy HCI etc.

I am VCIX6-DCV, Dual VCP – DCV & NV, MSCE – Cloud, CCNA, ITIL v3 Certified.

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