To resolve this issue, you must specify a segment ID pool for each NSX Manager to isolate your network traffic. If an NSX controller is not deployed in your environment, you must add a multicast address range to help in spreading traffic across your network and avoid overloading a single multicast address.
To provide Segment ID range and to enable multicast addressing:
- Log in to the vSphere Web Client.
- Click on Networking & Security and click Installation.
- Click the Logical Network Preparation tab and click Segment ID.
- Click the Edit icon.
- Type a range for segment IDs. For example, 5000-5200.
The segment ID range determines the maximum number of logical switches that can be created in your infrastructure.
- If you do not have a deployed NSX controller in your environment. Select the enable multicast addressing option and enter an address range. For example, 239.1.1.10-239.1.1.20
For more information, see the NSX for vSphere Installation and Upgrade Guide.