RUN TCP/IP | Morgan Lucas is Tech Blogging

  alt: Three panels of a dog with a toy. Panel 1: 'Pls release IP address'. Panel 2: 'No release', Panel 3: 'Only hold onto expired IP' It's not practical for home internet services to let end users distribute their own IP addresses to their devices. The option is there, but it's far easier to let people use DHCP - You get a pool of addresses for your devices, and the router does the work in distributing them. That way, your devices can talk to each other (Somewhat - in a L2 network, they don’t need IP addresses) and reach the internet! But what happens when one Windows 10 device is unused for months? The device is totally off. It holds onto an expired IP address - and then it can't get back on. That's what happened this week. After scanning with Wireshark, no DHCP packets were being sent at all. The laptop didn't want to connect to any home internet router, of which there were two - The main one and the extender. Flushing DHCP didn...

NOTE : The problem has repeated itself. So this doubles as an off the cuff case study in level 1 troubleshooting, looking at data, comparing information at different locations.  Also - I wrote it, and I'm not wasting my time by not publishing it.  I have the Samsung Galaxy A12, and the service through T-Mobile is pretty good. While the infrastructure around our nation is fair at best, it's showing it's age and weakness in storms - and that may apply to private towers owned by T-Mobile as well.  I turn on data, and either: It works The symbol in the upper right does not show up and it's not working. The symbol shows up and the data still doesn't work.     Here's a demo; Other videos are available upon request. Now, there is a setting where I can change the mobile band (2G/3G, 3G/4G) my phone uses, something I was unaware of until a cool Twitter user let me know. This alleviates the problem sometimes, but if I go hours without using data, the problem returns....

 " We are designing a new workspace with 3 floors. On average, there will be 100 devices on each floor that require wired and wireless connectivity. Submit a network design including: (1.) A network diagram (2.) Hardware choices (3.) VLAN and subnetting information (4.) Anything else you think is relevant. "    This was a question for a position at Shopify. While it was publicly available, I decided to wait and post this when the position closed. The Methodology/Framework Break it into chunks. Separate it by something, in this instance, the floors. Determine the departments. Subnets per floor - I'm not using CIDR. Pick the hardware. Ask other questions.

SITUATION: About 3 weeks ago, T-Mobile has a second deal in its popular T-Mobile Tuesdays app: "Come back at 3PM Central to get a Starbucks 3$ gift card!" This would not be the first time the Telecommunications brand encouraged people to flood the app to get free or discounted food - earlier in 2019, there was a similar deal with Panda Express, and the Chinese-American Chain was not prepared to handle the orders, letting many of them go unfulfilled. Would T-Mobile be more ready? I mean, they are a telecommunications company, right?