TEP tunnels between NSX Edges and ESXi Hosts remain down in a Collapsed Cluster

Products

• VMware NSX

Issue/Introduction

• Edges that are part of a collapsed cluster should exhibit below information on net-dvs -l:

                        propType = POLICY

                com.vmware.common.port.block = false , propType = POLICY

                com.vmware.port.extraConfig.vdl2.nestedTNConfig = version=1;vlan=141,label=62465;vlan=141,label=3073 , propType = POLICY

                com.vmware.common.port.volatile.vlan = VLAN 0

                        ranges = 131 132 141 161-180

• If the value "com.vmware.port.extraConfig.vdl2.nestedTNConfig" is not visible on "net-dvs -l" output for the edge ports, the nestedTNConfig is not pushed and tunnels will be down.

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Environment

VMware NSX-T Data Center

VMware NSX

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Cause

The cause of "com.vmware.port.extraConfig.vdl2.nestedTNConfig" not being populated on a collapsed cluster is due to the value  "lsp_inter_vtep_enable" being set to false. This can be verified by running the following API call:

 

GET https://<<nsx-mgr-ip>>/api/v1/edge-tuning-configuration

{

  "lsp_inter_vtep_enable" : false, ----------------> its false here

  "resource_type" : "EdgeTuningParameters",

  "id" : "8bbc3064-xxxx-xxxx-xxxx-2d7fdc4909b0",

  "display_name" : "8bbc3064-xxxx-xxxx-xxxx-2d7fdc4909b0",

  "_create_time" : 1663735327326,

  "_create_user" : "system",

  "_last_modified_time" : 1670735315890,

  "_last_modified_user" : "admin",

  "_system_owned" : false,

  "_protection" : "NOT_PROTECTED",

  "_revision" : 1

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Resolution

Workaround:

Use the following API call to set the value "lsp_inter_vtep_enable" to true:

 

PUT https://<<nsx-mgr-ip>>/api/v1/edge-tuning-configuration

{

    "lsp_inter_vtep_enable": true,

    "resource_type": "EdgeTuningParameters",

        "_revision": 1

}

Additional Information

 

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