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Subneting Explained | What Is Subneting? | How It Works? | Networking Tutorial |

In this slide on what is subnetting we will learn how to efficiently manage excess IP addresses in a network channel and use them by using the subnetting process. You will also learn about the seven essential attributes required for the subnetting process and solve an example to practice subnetting, and also see some benefits and drawbacks of using the subnetting process.<br><br>Topics covered in this presentation on what is subnetting are:<br>1. What Is Subnetting?<br>2. Class Addresses & Subnet Mask<br>3. Characteristics Of Subnetting<br>4. Benefits Of Subnetting<br>5. Drawbacks Of Subnetting<br>

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Subneting Explained | What Is Subneting? | How It Works? | Networking Tutorial |

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  1. What’s In It For You? • What Is Subnetting? • Class Addresses & Subnet Mask • Characteristics Of Subnetting • Benefits Of Subnetting • Drawbacks Of Subnetting

  2. What Is subnetting?

  3. Click here to watch the video

  4. What Is Subnetting? Subnetting involves the process of dividing a network into smaller networks to attain better connectivity, security, and efficient flow of network traffic. Connectivity Security Net Traffic The smaller divided networks are known as sub-networks. 11.12.35.X/25 Sub-Network 11.12.35.0/24 Sub-Network Sub-Network 11.12.35.X/25

  5. Class Address & Subnet Mask

  6. Class Addresses

  7. Class Addresses 8 Class A - 1 1 1 1 1 1 1 1 | 00000000 | 00000000 | 00000000 Class B - 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 00000000 | 00000000 Class C - 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 00000000 16 24

  8. Subnet Mask The subnet mask is a way to differentiate between the network ID and the host ID part of an IP address. 8 Class A - 1 1 1 1 1 1 1 1 | 00000000 | 00000000 | 00000000 Class B - 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 00000000 | 00000000 Class C - 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 00000000 16 Network ID Host ID 24

  9. Subnet Mask 8 Class A - 1 1 1 1 1 1 1 1 | 00000000 | 00000000 | 00000000 Class B - 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 00000000 | 00000000 Class C - 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 1 1 1 1 1 1 1 1 | 00000000 16 Network ID Host ID 24

  10. Characteristics Of Subnetting

  11. Characteristics Of Subnetting • The Seven characteristics of Subnetting: • Network ID: This is the first IP address in each Sub-Network. • Broadcast ID: This is the last IP address in each Sub-Network. • First Host ID: Represents the IP address after the Network ID. • Last Host ID: Represents the IP address before the Broadcast ID. • Next Network: This defines the network ID of the next sub-network. • # IP Addresses: The total no. of IP addresses in the Sub-Network. • Subnet/CIDR: Is the way to differentiate b/w the Network ID and the Host ID in an IP address.

  12. Characteristics Of Subnetting • Assuming an example IP address: 192.168.0.X/24, .0 /25 IP: 128 CIDR: 255.255.255.128 Net ID: 192.168.0.0 Brd ID: 192.168.0.127 IstH IP: 192.168.0.1 LstH IP: 192.168.0.126 Next Network: 192.168.0.128 The Network ID is used to identify the sub-network block. The Broadcast ID is used to communicate with any of the host attached to the sub-network. Total no. of usable addresses = Total no. of addresses – 2(Network ID and Broadcast ID) Usable = 128-2 Usable = 126 IP addresses • # IP Addresses • Subnet/CIDR • Network ID • Broadcast ID • First Host IP • Last Host IP • Next Network .128 /27 Characteristics? .160 /27 .192 /26 .255

  13. Benefits Of Subnetting

  14. Benefits Of Subnetting Enhanced Network Efficiently:When the system transmits a packet on the network, it is transferred to only those network devices, that are, connected to that specific subnet network after transmitting through the router. 12.1.1.1 12.1.2.1 12.1.1.X 12.1.2.X 12.1.1.2 12.1.2.2 12.1.3.x

  15. Benefits Of Subnetting Network Security: In case of a hacking attack, if the network is sub-netted then the damage to the network can be controlled to a specific sub-network. 12.1.1.1 12.1.2.1 12.1.1.2 12.1.2.2 12.1.3.x

  16. Drawbacks Of Subnetting

  17. Drawbacks Of Subnetting Establishing multiple subnets may make the network system too complex and decrease the effectiveness of the subnetting. Wastage of unrequired IP addresses after assigning the needed networks. Proper requirement of network devices, such as router, switch, etc.

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