Networking in Azure
- Azure has a global backbone network which connects every region using a Azure developed dedicated line
- In every region we have server infrastructure, so there is connectivity b/w physical servers of azure accross regions
- As the user/architect of azure this physical network is not our concern, we should be intrested in the network where our azure resources will be created.
- This network where azure resources will be created is a virtual network
- To understand this virtual network we need to understand some networking aspects
- LAN
- IP Address (IpV4)
- Subnetting
- CIDR
- NAT
- TCP
- Load Balancing
- DNS
Networking Basics
Understanding home networks
- Lets look at our home wifi connections
- All the devices in our home are connected to wifi router which creates a network
- To uniquely identify a device connected to a network, each devices gets an unique ip address.
- Can we communicate b/w two devices in a home network?
- Yes because they are in same network
- Can we directly b/w two devices in two different networks?
- I Cannot directly communicate b/w two wifi networks directly there should be some kind of connection b/w them
Basic concepts of network
- Two devices can communicate with each other if they are in same network
- To forward the packet from one network to other network we need an external device called as router
- How my network connects to google.com (or any other)
How can network know whether we are communicating with device in same network or different network
- Execute ipconfig on your machine in a terminal
- What is subnet mask and Default Gateway?
- Default Gateway is the ipaddress of the router
- Subnet mask helps
- in identifying the network id and host id
- to determine size of your network
