subnet 255.255.255.0?

Question

why is my subnet 255.255.255.0 when my ip is 192.168.1.XXX? shouldn't my subnet be 192.168.1.0/24?

Answer 1

A bit complicated this one!



Your IP, 192.168.1.xxx is your pc's "address" on a Network. So that your Router/Server knows where to route the data.



The Subnet Mask however, determines the "class" of a Network. 255.255.255.0 is a "Class C" network.



A class c network can host up to 254 pc's



You then have 255.255.0.0, which is class B & 255.0.0.0, which is class A.



The higher the class, the bigger the network can be & the more pc's you can have on it.



Hope that makes sense!

Answer 2

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Subnetting: To subnet a network is to divide a network into smaller networks. its that easy! An example... (not technically accurate but it works for a simple explaination) If you had a network with 100 computers you could divide this into 5 subnets with 20 computers on it. You would subnet a network to make broadcast domains smaller. Basically what that means is computers will send certain network traffic to EVERYONE on their network. this dividing up broadcast domains reduces unnecessary traffic. Another reason to subnet is because of location. if you own a big network range and have 4 stores in one state, you could subnet your big network range into subnets for each store. Subnetmask A mask used to determine what subnet an IP address belongs to. An IP address has two components, the network address and the host address. For example, consider the IP address 150.215.017.009. Assuming this is part of a Class B network, the first two numbers (150.215) represent the Class B network address, and the second two numbers (017.009) identify a particular host on this network. Subnetting Subnetting enables the network administrator to further divide the host part of the address into two or more subnets. In this case, a part of the host address is reserved to identify the particular subnet. This is easier to see if we show the IP address in binary format. The full address is: 10010110.11010111.00010001.00001001 The Class B network part is: 10010110.11010111 and the host address is 00010001.00001001 If this network is divided into 14 subnets, however, then the first 4 bits of the host address (0001) are reserved for identifying the subnet. The subnet mask is the network address plus the bits reserved for identifying the subnetwork -- by convention, the bits for the network address are all set to 1, though it would also work if the bits were set exactly as in the network address. In this case, therefore, the subnet mask would be 11111111.11111111.11110000.00000000. It's called a mask because it can be used to identify the subnet to which an IP address belongs by performing a bitwise AND operation on the mask and the IP address. The result is the subnetwork address: Subnet Mask 255.255.240.000 11111111.11111111.11110000.00000000 IP Address 150.215.017.009 10010110.11010111.00010001.00001001 Subnet Address 150.215.016.000 10010110.11010111.00010000.00000000 The subnet address, therefore, is 150.215.016.000.

Answer 3

Basically a subnet tells you how many bits are for network & how many for the hosts.

192.168.001.XXX

255.255.255.000

nnn.nnn.nnn.hhh

The first three octets are the network & the last octet is hosts (devices)



When expressed in the format

192.168.1.x/24

the "/24" tells you the first 3 octets are the network.

24?

255 . 255 . 255 .

11111111.11111111.11111111.

3 * 8bit octets = 24

11111111 binary = FF (hex) = 255 decimal.



Now to really understand subnetting/supernetting you need to know binary and have some time to learn.

Answer 4

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RE:

subnet 255.255.255.0?

why is my subnet 255.255.255.0 when my ip is 192.168.1.XXX? shouldn't my subnet be 192.168.1.0/24?

Answer 5

255.255.255.0 is your subnet "mask". It is used to determine if a packet being sent is for a host on the local network or another network.

192.168.1.0/24 is your network ID

Answer 6

255.255.255.0 is the early class designation. The other version is the classless version, which is used to break away from class type networks, which waste addresses in the larger classes, but run out of addresses in the smaller classes as networks grow. They really mean the same. To increase the size of the network you simply reduce the subnet number.

Answer 7

Don't understand what you mean exactly. 192.168.1.0/24 and 255.255.255.0 are the same things actually. The first allows you to have 256 no. of addrs and the second one... guess what... allows you the same thing.

To put in the "dictionary" words... 255.255.255.0 is the mask. The other one is the subnet: 192.168.1.0/24 Got it? :)

Answer 8

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Answer 9

255.255.255.0

Answer 10

192.168.001