Routing Across AWS Subnets

Fri, 31 May 2024 17:00:00 -0400

This morning at work I was presented with an interesting question: why can’t two instances in AWS seem to talk to each other on their internal / private network interfaces? To answer this, let’s back up a second and let me show you what the architecture of the environment is. First, take a moment and look at the diagram below and observe not only how many layers there are, but also that this is a pretty simple setup with one VPC containing two instances that are spread across two Availability Zones:

Crash Boom Bang: PoE & Lightning Strikes

Sat, 09 Apr 2022 09:00:00 -0400

A couple of days ago there was a severe storm that rolled through my area. Lots of thunder that literally rattled the walls of my house, lightning strikes near by, and high winds. At one point the power blinked out too. No big deal… or at least it wasn’t after I realized what was going on. The mystery I am referring to is that when the storm finished I realized my PoE Zigbee Coordinator wasn’t back up and running.

Networking on The Comfy Seat

Routing Across AWS Subnets

Crash Boom Bang: PoE & Lightning Strikes