Gathering Packet Captures is a very reliable tool for deep network-level diagnosis. There are solutions inside a PCAP that can't be seen using any other diagnostic method. For this reason, Customer Support will often request a Packet Capture, even when there may not be an obvious reason.
First, navigate to the Packet Capture page on the CA by pointing your browser at Utilities > Packet Capture where you'll be taken to the page represented in Image 1:
port 1344 or port 11344
port 1344 and host 10.31.19.100