 # How Do You Create A Subnet?

## How do you subnetting IP addresses with examples?

Example: A class C network would have a subnet mask of 255.255.

255.0 which means that 24 bits are used for the network.

In CIDR notation this is designated by a /24 following the IP address..

## What is the formula for host per subnet?

2n -2, Where the exponent n is equal to the number of bits left after subnet bits are borrowed. we can calculate how many bits will be required so that each subnet has 30 host addresses. 25 -2 =30, so 5 bits atleast must be available for host addressing and the remaining can be borrowed to create subnet addresses.

## How many subnets are in a 24?

Converting /29 gives 255.255. 255.248. This shows that the fourth octet is the interesting octet. Deducting 248 from 256 gives us 8 so the subnets are 0, 8, 16, 24, 32, 40, 48……2-3 Subnetting.Dotted Decimal ValueCIDR notation255.255.255.0/24255.255.255.128/25255.255.255.192/26255.255.255.224/2719 more rows•Dec 12, 2013

## What are the 4 parts of an IP address?

IP Address ComponentsAddress Class. Early in the development of IP, the IANA (Internet Assigned Numbers Authority) designated five classes of IP address: A, B, C, D, and E. … Default Subnet Mask. … The Network Field. … The Host Field. … Non-default Masks. … The Subnet Field.

## How do subnets work?

Subnetting works by applying the concept of extended network addresses to individual computer (and another network device) addresses. … But because this is a Class C network, the default subnet mask of 255.255. 255.0 allows all computers on the network to be peers (to send messages directly to each other) by default.

## What is subnet in IP address?

Subnet Mask–A 32-bit number used to distinguish the network and host portions of an IP address. Subnet or Subnetwork–A smaller network created by dividing a larger network into equal parts. TCP/IP–Used broadly, the set of protocols, standards, and utilities commonly used on the Internet and large networks.

## What is Subnet example?

For example, 255.255.255.0 is the subnet mask for the prefix 198.51.100.0/24. Traffic is exchanged between subnetworks through routers when the routing prefixes of the source address and the destination address differ. A router serves as a logical or physical boundary between the subnets.

## What is a 16 subnet?

The number 16 is the first subnet and also your block size. … The valid subnets in this example are 16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224. As another example, if you had a Class A subnet mask of 255.255. 240.0, you’d use the mask on the second and third octets minus 256.

## How many subnets are in a class B?

Example 6: The Class B 255.255. 255.128 subnet mask: 2-2=510 subnets. 2-2=126 hosts per subnet….Subnetting a Class B network address.Subnet64.0128.0broadcast127.255191.2552 more rows•May 29, 2001

## What does a subnet look like?

The subnet mask looks a lot like an ip address. It is made up of four eight bit numbers separated by periods. These numbers once again range from 0 to 255. A typical subnet mask is 255.255.

## Why do we create subnets?

Subnetting ensures that traffic destined for a device within a subnet stays in that subnet, which reduces congestion. … However, using a router to move traffic between subnets results in no broadcast traffic or any information that doesn’t need to be routed being moved to other subnets.

## How many subnets can I create?

Having 5 bits available for defining subnets means that we can have up to 32 (2^5) different subnets. It should be noted that in the past using subnet zero (00000—) and all-ones subnet (11111—) was not allowed.

## How do I find my IP subnet?

In the Windows search fields, type cmd, to open command prompt.Press Enter.Type ipconfig/all press Enter.Find your network settings.Your PC’s IP address and your network Subnet Mask and Gateway will be listed.

## What are the valid subnets?

Answer: The valid hosts are the numbers between the subnet number and the mask. For the 64 subnet, the valid host range is 64-126. For the 128 subnet, the valid host range is 129-190.

## How do I write subnet mask?

When you use slash notation, you write the IP address, a forward slash (/), and the subnet mask number. To find the subnet mask number: Convert the decimal representation of the subnet mask to a binary representation. Count each “1” in the subnet mask.

## What are the 3 major classes of an IP network?

Currently there are three classes of TCP/IP networks. Each class uses the 32-bit IP address space differently, providing more or fewer bits for the network part of the address. These classes are class A, class B, and class C.

## What is my subnet mask and gateway?

Use the IPCONFIG Command Type “ipconfig” at the prompt and press “Enter.” This command displays all network interfaces and their configurations, including IP addresses, subnet masks and default gateway. … 255.0″ on a local area network.

## How do you calculate the number of subnets?

Calculate the subnet bits by looking at the final 8-bit binary word of the 32-bit binary subnet mask. If the final 8-bit binary word is 10000000, then there is one subnet bit and therefore 25 mask bits. If it is 11000000, then there are two subnet bits and therefore 26 mask bits.

## How many hosts are in a subnet?

You can figure out how many hosts you can have in your subnet by subtracting the number of network bits from the number of total bits: in other words, 32 total bits, minus the number of network bits. Let’s use 26 as an example. A subnet with 26 network bits has six bits available for the host IP addresses.

## What is subnet number?

A subnet number is a specific part of a subnet address in an IP address that identifies one among several subnets as the recipient or originator of a data packet. The subnet number helps browsers to accurately use the Internet to deliver messages to specific parts of a party’s full network.