How do you trigger the Data Aggregator ( DA ) to discover a Virtual Network Assurance ( VNA ) device automatically?

Products

• CA Virtual Network Assurance
• CA Performance Management - Usage and Administration
• DX NetOps

Issue/Introduction

How do you trigger the Data Aggregator ( DA ) to discover a VNA device automatically?

Environment

Release: 20.2.1+

Cause

In Performance Management ( PM ) 20.2.1, a parameter in the DA REST UI was introduced to allow the ability to trigger the DA to automatically discover a VNA device by SNMP

Resolution

1. The first item we need to set this parameter is the ID of the DiscoveryDefaultConfig profile.  This can be obtained by accessing the following URL:

http://daHostname:8581/rest/discoverydefaultconfig

Once here make a note of the <ID>#</ID> block, for example we will use this entry: <ID>6</ID>

 

2. Once we have the ID we can construct the REST call to change the parameter from false to true:

a. URL: http://daHostname:8581/rest/discoverydefaultconfig/ID

b. Method: PUT

c. Header: Context-Type: application/xml

d. Body: 

<DiscoveryDefaultConfig version="1.0.0">
   <DiscoverVNADeviceAsSnmpManageable>true</DiscoverVNADeviceAsSnmpManageable>
</DiscoveryDefaultConfig>

 

As an alternative you can construct a CURL command like the below using the same information as noted above:

curl --header "Content-Type: application/xml" --request PUT --data '<DiscoveryDefaultConfig version="1.0.0"><DiscoverVNADeviceAsSnmpManageable>true</DiscoverVNADeviceAsSnmpManageable></DiscoveryDefaultConfig>' --url http://daHostname:8581/rest/discoverydefaultconfig/6

Additional Information

This will only discover new devices via SNMP. If you have VNA devices that exist before this setting is implemented, these will need to be discovered manually.