Portgroup names with specific pattern translate into single logical segment during migration from VDS to N-VDS
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Portgroup names with specific pattern translate into single logical segment during migration from VDS to N-VDS

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Article ID: 324100

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Updated On:

Products

VMware Cloud Foundation

Issue/Introduction

Symptoms:
  • All the vmkernels (mgmt, vsan, vmotion) are connected to single logical segment in N-VDS. This happens when portgroup names given have the same suffix. 
  • In the example below, each end with "-Cluster":
SDDC-DPortGroup-Mgmt-Cluster
SDDC-DPortGroup-VSAN-Cluster
SDDC-DPortGroup-vMotion-Cluster
  • These get translated to same logical segment, which is "ls-vi-vcenter-1-cluster2-cluster" in the example above.


Environment

VMware Cloud Foundation 3.10.x

Resolution

This issue will be fixed in a future 3.x release.

Workaround:
To workaround this, it is required to create separate segments for VSAN and VMOTION and move the respective vmkernels over. Please use the the steps to perform this workaround:
  1. Rename management logical segment (currently created) to end with "mgmt". From the example above "ls-vi-vcenter-1-cluster2-cluster" will become "ls-vi-vcenter-1-cluster2-mgmt"
  2. Create new logical segments for vMotion and vSAN. Add the required respective VLAN ID, and choose VLAN Transport Zone. Following the example above create the below mentioned logical segments:
ls-vi-vcenter-1-cluster2-vmotion
ls-vi-vcenter-1-cluster2-vsan
  1. Find the cluster Tranport Node Profile (TNP).
  2. Modify the TNP to have vmkernels on newly created vSAN and vMotion logical segments. Map the vmkernels as below:
vmk1: ls-vi-vcenter-1-cluster2-vmotion
vmk2: ls-vi-vcenter-1-cluster2-vsan
  1. Apply the TNP the cluster.
  2. Detach the TNP from the cluster.
  3. From the vCenter Web Client, confirm that the vmkernels are on newly create segments.