'Number must not be null' when creating a new Routed Network or modifying an existing Routed Network

Products

• VMware Cloud Director

Issue/Introduction

Symptoms:
'Number must not be null' when creating a new Routed Network or modifying an existing Routed Network

Environment

VMware Cloud Director for Service Provider 9.5.x

Cause

This issue occurs when NAT rules configured on the Edge Gateway are missing their appropriate <ruleTag> element.

Resolution

This is a known issue affecting vCloud Director 9.5.

This issue is resolved in 9.5.0.4 and 9.7.

Workaround:
To workaround the issue you will need to follow the steps below:
Note: The steps below will require the use of tools to interact with the NSX API such as Postman or cURL

Unless specified, the following Headers are required for all of the REST API calls to the NSX Manager:

• Authentication - Basic Authentication: (admin, <admin.password>)
• Accept: application/xml
• Content-type: application/xml

1. Use the NSX API to retrieve a list of Edge Gateways

 

GET https://NSX_FQDN/api/4.0/edges

2. Take note of the <edge-id> of the affected Edge Gateway
Note: <edge-id> is the unique identifier for the edge e.g. edge-7, which will have been present in the output of the previous API Request.

3. Use the NSX API to retrieve the configuration of the affected Edge Gateway

GET https://NSX_FQDN/api/4.0/edges/<edge-id>

4. Copy the Response XML to a notepad file so you can revert the configuration if needed
5. Locate the <natRule> element in the Response XML
6. Locate the NAT rules that have missing <ruleTag> elements
7. Create a <ruleTag> element, using the same value as the <ruleId>.

<ruleId>196646</ruleId>
<ruleTag>196646</ruleTag>

8. Update the Edge Gateway using the Updated Response XML
 

PUT https://NSX_FQDN/api/4.0/edges/edge-id

Note: The Updated Response XML is used as the Body of your PUT request 

9. Once the Update succeeds, navigate to the vCloud Director UI 
10. You will now be able to create a new Routed Network or modifying an existing Routed Network