![]() Has anything changed? What about if you plug it back in? If you use a dongle to connect the Ethernet cable to your laptop, what happens if you leave the Ethernet cable plugged into the dongle but unplug the dongle from your laptop? Take a few minutes to compare notes with others who are doing the same but with other types of laptops. If you don’t see a link light active, or even if you do, unplug the Ethernet cable and look again. If you see active link lights, you’re good to go. ![]() Lastly, some laptops no longer provide Ethernet ports.īut regardless, even seeing these LED link lights on one of the nodes generally indicates you are fully and properly connected at both sides of the Ethernet cable. And some laptop producers change around the color of the LEDs, or use them for different purposes. Can you see one or two little LEDs where the Ethernet cable is connected? Some laptops with Ethernet ports, particularly those from Apple, no longer include the link lights, figuring if you want to know, you can open up software to find the answer. When the cable is fully plugged in and the Raspberry Pi is turned on, you should see one or both come on (red indicates it’s connected, green indicates it’s transferring data). Look for a couple of little LEDs on the Raspberry Pi where it connects to the Ethernet cable. The most general of tests is to see if a wired Ethernet media is making a connection between a node and a network switch – or in the case of our Raspberry Pi/laptop connection, two nodes. This is a great opportunity to work collaboratively. Along the way, let’s do a little bit of testing to make sure our networking is performing as expected, and if not, where it might be failing. Let’s use some essential network troubleshooting tools to follow the data beanbag as it’s passed around the circle. And when gathering information from something like a web server, the server itself may first act as a client, dynamically collecting data from a range of other servers, again using interconnect devices, before packaging this into a web page that it passes back to you. The Ethernet cable served to carry the data beanbag between these players.įor most of our work on computers, smartphones, and other networked devices, the beanbag needs to pass between many more interconnect devices to get between the starting and ending node. But even there, the server and client VNC (Virtual Network Computing) software are standing in the circle along with the hardware (computers). ![]() Previously, we saw how the “data beanbag” could be passed between just two nodes, your laptop and the Raspberry Pi.
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