Do MTU and VLAN-ID health check using NSX Manager

Home > VMWare platform > VMWare NSX > Do MTU and VLAN-ID health check using NSX Manager

While deploying or using NSX the biggest concern is whether we got switch / physical networking setup correctly in terms of VLAN-IDs and MTUs. To check whether each ESXi host uplink port is being trunked with all required VLANs and that all these VLANs are working at expected MTU use:

1. Create file post-request.txt with following content

   {
   "resource_type": "ManualHealthCheck",
   "display_name": "Manual HealthCheck 002",
   "transport_zone_id": "7754341c-8f3c-443f-9c1a-2d635d5b0d1c",
   "vlans":{
   "vlan_ranges":[{
   "start": 17,
   "end": 23
   }]
   }
   }

2. Login into NSX manager and replace transport_zone_id with appropriate ID (System -> Fabric -> Transport Zones )
3. Update start and end VLAN IDs from 17, 23 in above example with appropriate range.
4. Make API call using:

   curl -k -u admin -H 'Content-Type: application/json' -X POST -d @post-request.txt https://<NSXManager_IP>/api/v1/manual-health-checks

   after replacing <NSXManager_IP> with appropriate IP

5. Then we can check the status of calls using:

   curl -k -u admin -X  GET https://<NSXManager_IP>/api/v1/manual-health-checks/<Health-check-ID>

   where <Health-check-iD> is part of output of post command (id) .

6. If there are subsequent requests then replace "display_name" with other values to recognize the results properly

Refer:

• https://docs.vmware.com/en/VMware-NSX-T-Data-Center/3.0/installation/GUID-9D2194BC-AFEB-451B-8B73-48A7218C0722.html
• https://linuxize.com/post/curl-post-request/
• http://www.vstellar.com/2018/06/21/getting-started-with-nsx-rest-api/

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