Read CIDR and create a VNet

The network plan your team uses is written entirely in CIDR blocks. Learn to read them, then build a new virtual network called vnet-lab with the address space 10.50.0.0/16.

1. Use the lab's cidr tool to see a block's first and last address and its size.

   cidr 10.1.0.0/16Type it

2. Compare a /20.

   cidr 10.1.0.0/20Type it

3. Answer question 1 with the size from step 1. Answer questions 2 and 3 the same way: answer <number> <value>.

   How many addresses are in 10.1.0.0/16?

   Prefix

   An address range written as start/bits, like 10.1.0.0/16. The number after the slash is how many leading bits are fixed.

   Check

   Is 10.1.200.7 inside 10.1.0.0/16? (yes or no)

   Prefix

   An address range written as start/bits, like 10.1.0.0/16. The number after the slash is how many leading bits are fixed.

   Check

   How many addresses are in a /20?

   Prefix

   An address range written as start/bits, like 10.1.0.0/16. The number after the slash is how many leading bits are fixed.

   Check

4. Create the new virtual network. --address-prefixes sets its address space.

   az network vnet create -g rg-lab --name vnet-lab --address-prefixes 10.50.0.0/16Type it
   What's this?

   Creates a virtual network with its address space.

   • -g the resource group the resources live in
   • --name the name of the thing to look at or change
   • --name vnet-lab the new VNet's name
   • --address-prefixes 10.50.0.0/16 one or more CIDR ranges, separated by spaces