NSX-T VDS to vCenter VDs migration failed when NVDs host switch is configured with LACP fast rate

Products

• VMware NSX
• VMware NSX-T Data Center

Issue/Introduction

• You have configured NVDS host switch with LACP fast rate on the uplink profile as per the example image below.
  
  
  
  
• When running the API call POST https://<nsx-mgr>/api/v1/nvds-urt/topology?action=apply as per the NSX-T administration guide you may not receive any errors but may see a similar output to the one below:
  

  {
    "topology" : [ {
      "nvds_id" : "######-###-####",
      "nvds_name":"nsxHostSwitch",
      "compute_manager_topology" : [ {
        "compute_manager_id" : "#####-###-#####",
        "dvswitch" : [ {
          "data_center_id" : "datacenter-3",
          "vds_name" : "CVDS-####-####",
          "transport_node_id" : [ "#####-####-####" ],
          "_protection" : "NOT_PROTECTED"
        } ]
      } ],
      "_protection" : "NOT_PROTECTED"
    } ]

• When you run the API GET https://<nsx-mgr>/api/v1/nvds-urt/status-summary/<precheck-id> you may observe that the precheck status is failed.
  

  {
    "precheck_id" : "####-####-####",
    "precheck_status" : "APPLY_TOPOLOGY_FAILED",
    "migration_state" : [ {
      "host" : "######-####-#####",
      "overall_state" : "UPGRADE_READY",
      "ip_address" : "#.#.#.#",
      "_protection" : "NOT_PROTECTED"
    } ]

 

• You may encounter the below error in vCenter while trying to migrate NVDS host switch to CVDS host switch:
  'Update Link Aggregation Control Protocol groups on vSphere Distributed Switch, The operation is not supported on the object. Feature feature is not supported on VDS version version'

 

 

Note: The preceding logs/output excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

 

Environment

VMware NSX-T Data Center

Cause

This issue is caused as LACP fast rate is not supported on VDS 7.0

Resolution

This is a condition that may occur in a NSX environment.

Workaround

1. Change LACP uplinkprofile to 'LACP Time Out: Slow'.
2. Run POST https://<nsx-mgr>/api/v1/nvds-urt?action=cleanup to clean the failed nvds-urt.
3. Follow NSX-T administration guide to migrate to VDS again.