Network Traffic Routing Explained
I’m looking into virtual networks in preparation for an Azure course I’m attending soon. See my previous article here where I learnt the basics on networking. Here’s what I learnt today about traffic routing.
The goal of today is to understand how Azure routes traffic between Azure, on premises and Internet resources.
Background
What’s routing?
Routing is selecting the path for the traffic in a network or across multiple networks. Network traffic is the amount of data moving across a computer network at any given time. It’s broken down into data packets.
What’s a router?
A router is a networking device that forwards data packets between networks.
For example, your broadband router provides Internet access by connecting your local area network (LAN, i.e. the devices in your house) with the Internet.
When a packet gets to a router, it looks at the destination IP address of the packet and works out where to route it to using a routing table.
