The document will help you with how to take a packet capture in Wireshark on the Director GUI.

Navigate on the Director > Appliance > <Appliance-name> > Monitor > Tool > Run Tcp Dump

For filters: 

For host IP: host <ip-address>

For Port: port <port number>

A timeout can be set as per the needs. If there isn't too much traffic you may capture it for longer period.

Once packet capture is completed, you can download it. Packet capture would be in Wireshark .pcap format for better troubleshooting and debuggability.

If you notice any issues with taking and downloading captures, reach out to support@versa-networks.com