IP & SUBNET
Last updated
Last updated
Octet: An octet in networking typically refers to a group of eight bits.
Each octet ranges from 0 to 255, representing a possible 256 values.
In the context of IP addresses, which are commonly represented in dotted-decimal notation
(like 192.168.1.1), each number between the dots is an octet.
For example, in the IP address 192.168.1.1:
192 is the first octet
168 is the second octet
1 is the third octet
1 is the fourth octet
Network IP: A Network IP (Internet Protocol) address is a logical address assigned to a network or subnet, rather than an individual device or host.
Broadcast IP: The broadcast IP address is a special IP address that is used to send data to all devices on a network subnet simultaneously. When a packet is sent to the broadcast IP address, it is received by every device on the subnet, regardless of their individual IP addresses.
Task: You need to configure a network with 100 IP addresses and split it into 4 smaller networks for 4 differnet projects your company is working on.
Network: 192.168.1.0/24
Usable IP Range: 192.168.1.1 to 192.168.1.254
Broadcast: 192.168.1.255
Subnet Details:
Subnet 1:
Network ID: 192.168.1.0/26
Usable IP Range: 192.168.1.1 to 192.168.1.62
Broadcast Address: 192.168.1.63
Subnet 2:
Network ID: 192.168.1.64/26
Usable IP Range: 192.168.1.65 to 192.168.1.126
Broadcast Address: 192.168.1.127
Subnet 3:
Network ID: 192.168.1.128/26
Usable IP Range: 192.168.1.129 to 192.168.1.190
Broadcast Address: 192.168.1.191
Subnet 4:
Network ID: 192.168.1.192/26
Usable IP Range: 192.168.1.193 to 192.168.1.254
Broadcast Address: 192.168.1.255
CIDR stands for Classlesss Inter-Domain Routing.
It enables network administrators to group blocks of IP addresses into single routing networks. CIDR accomplishes the same task as traditional subnet masking.
CIDR Converstion Table
