- It also know as CIDR(Classess Inter-Domain Routing) notation.
- CIDR is a compact way to show or write a subnet mask.
- How to use slash notation: -> <ipaddress>/<subnet mask>
- How to find subnet mask number:
1. Convert the decimal representation of the subnet mask to a binary representation.
2. Count each "1" in the subnet mask. The total is the subnet mask number.
- Example:
IP Address: 192.68.42.23
Subnet mask: 255.255.255.0
2. Count each "1" in the subnet mask = 24
3. Here the result: 192.168.42.23/24
- Table: