What is a Subnet mask?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

Definition The word subnetwork (usually shortened to subnet) has two related meanings. In the older and more general meaning, it meant one physical network of an internetwork. In the Internet Protocol (IP), a subnetwork is a division of a classful network. The rest of this article is about the second meaning. Subnetting an IP network allows a single large network to be broken down into what appear (logically) to be several smaller ones. It was originally introduced before the introduction of classful network numbers in IPv4, to allow a single site to have a number of local area networks. Even after the introduction of classful network numbers, subnetting continued to be useful, as it reduced the number of entries in the Internet-wide routing table (by hiding information about all the individual subnets inside a site). As a side benefit, it also resulted in reduced network overhead, by dividing the parts which receive IP broadcasts.
28 people found this useful

How do you find your subnet mask?

If you are running Windows - click Start > Run...> type 'command' (without quotes) > click the OK button > at the cursor in the black box that appears, type 'ipconfig' (without quotes) > press the enter button. You will see something like this: _____________________ Microsoft(R) Windows DOS (MORE)

How do you find subnet mask?

Get Subnet Mask, IP Address, Gateway etc. For windows users go to START button in bottom left corner then to RUN then type COMMAND in the box - the mini DOS prompt will open in a separate window. Then type ipconfig/all and all the information you desire will be listed - ip address, default gateway, (MORE)

What is subnet mask?

A subnet mask is something that divides the IP address into a host and network. It is a very confusing thing but it will also let you see the IP address of the user.

Find external subnet mask?

A simple way of finding out your computer's external subnet mask inWindows is to go to Start and select Run. Type ipconfig into thebox, press the Enter key on the keyboard and a dialogue box willpop up with the required information.

How to set subnet mask?

, First you have to go inside your router . To do that , please type in the explorer bar 192.168.1.1 Press the "Enter" key When prompted type "admin" for username and "admin" or "1234" for password Press "Enter" again Once you got inside the router, search for Network configuration and S (MORE)

What is the subnet mask of 24.172.229.62?

That address belongs to RoadRunner internet who is likely to be using complex network scopes, or even single addresses.. Because of that the subnet mask is impossible to predict.. IF (and I'm sure you're not) you were to address the entire Class B subnet, the available addresses would be 24.172.0. (MORE)

What is the subnet mask used for?

It is used to tell the machine who it can talk to without the assistance of a gateway. 192.168.1.1/24 or 192.168.1.1 255.255.255.0 Can talk to anyone with the IP of 192.168.1.2-255 without the use of a gateway. Any requested addressed to someone outside of that gateway will automatically (MORE)

Function of subnet mask?

A subnet mask sends messages to the computer. Its main function isto let the computer know which addresses are remote, and which arelocal.

How do you calculate a subnet mask address?

Calculating a subnet mask depends on whether you are using the default, classful mask or a true subnet mask to divide a network into smaller pieces. The defaults are on octet boundaries (every 8 bits): 255.0.0.0 class A network 255.255.0.0 class B network 255.255.255.0 (MORE)

How tocalculate subnet mask address?

Calculating a subnet mask depends on whether you are using the default, classful mask or a true subnet mask to divide a network into smaller pieces. The defaults are on octet boundaries (every 8 bits): 255.0.0.0 class A network 255.255.0.0 class B network 255.255.255.0 (MORE)

How do you calculate a subnet mask?

In computer networks based on the Internet Protocol Suite, a subnetwork, or subnet, is a portion of the network's computers and network devices that have a common, designated IP address routing prefix (cf. Classless Inter-Domain Routing, CIDR).. A routing prefix is the sequence of leading bits of a (MORE)

How is a subnet mask created?

The subnet mask is created by placing a binary 1 in each bit position that represents the network portion and placing a binary 0 in each bit position that represents the host portion.

What is subnet masking?

Subnet masking is dividing a network address into sub network addresses for performance and security purpose

If your ip is 65.56.25.17 what is your subnet mask?

Smaller than 65.56.0.0/14. With just the IP, there is no way to know the netmask. We can see that Level 3 owns that address and their block is a /14. It could be a /30 with a gateway of 65.56.25.18. it could be a /29 with a gateway of 65.56.25.18-22. In short, there is no way to definitively k (MORE)

What is the subnet mask of class d?

There isn't a standard subnet mask for class D. Class D is for multi-casting, and requires group membership, and other things. This link may help with that information: http://technet.microsoft.com/en-us/library/cc739600(WS.10).aspx

What is the main role of subnet mask?

Main role of the Subnet mask is to give you the Subnet (network) address of your network. For a given I.P. (Internet Protocol ) Address say of any class it can be divided into different smaller groups. For E.g. I.P. Address = 192.56.78.24 it is a class C address. Now Anding the I.P. address with giv (MORE)

What is a static length subnet mask?

That probably refers to a situation where a larger network was divided into smaller subnets, but all subnets have the same size - as opposed to VLSM (variable length subnet masks), where subnets can have different sizes. That probably refers to a situation where a larger network was divided into sm (MORE)

Subnet mask for 172.20.128.0?

This IP address can work with a variety of different subnet masks. This IP address can work with a variety of different subnet masks. This IP address can work with a variety of different subnet masks. This IP address can work with a variety of different subnet masks.

A subnet mask separates?

A submask is designed to separate the network id portion of an IP address from the host or client portion. This helps a router determine whether the packet needs to be forwarded to another network.

What is a default subnet mask?

The submask indicates the division between the network id and the host information in an ipV4 address. The default subnet mask indicates the presence of a class A, B, or C based network (the default) without subnetting.

Does dhcp assign the subnet mask?

Yes, DHCP usually assigns a number of settings for an adaptor, which may include: IP Address Subnet Mask Default gateway WINS servers DNS servers and other settings.

Where can you get your subnet mask for Mac?

Any device (mac or not) receives its subnet mask from the DHCP service, or by manually configuring the interface. In the case of manual configuration you would need to check with your network administrator to find out the correct setting for the subnet mask.

What is the default subnet mask for 199.50.12.4?

Since this is a Class C address, the default network mask is 255.255.255.0. Since this is a Class C address, the default network mask is 255.255.255.0. Since this is a Class C address, the default network mask is 255.255.255.0. Since this is a Class C address, the default network mask is 255.255. (MORE)

How is a cidr subnet mask implied?

With CIDR and VLSM, the subnet mask can no longer be implied. The routing protocol must include information about the subnet mask, when a router sends updates to other routers. This makes some older routing protocols unsuitable for such cases; for example, RIP version 1 is unsuitable, but RIP versio (MORE)

What class has subnet mask 225.225.225.0?

If this is a default subnet mask, then it would be a class C subnet mask. If you are subnetting a network and this is not the default subnet mask, then it could be either a class A or class B.

What is the subnet mask of 135.210.195.112?

This is a Class B address. So if classful addressing scheme we can say that the default mask of any Class B address is 255.255.0.0. But it may not be always this. There is a concept called VLSM (variable length subnet mask) with which we have the option to give different subnet masks.

What is subnet mask and default gateway?

Subnet mask is a mask used to determine what subnet an IP address belongs to. Default gateway is the gateway in a network that a computer will use to access another network if a gateway is not specified for use.

Why subnet mask is neceessary?

The subnet mask tells a computer the size of the network or subnet in which the computer resides. Thus, it can distinguish whether a certain destination is within the same network, or outside. This is relevant because any data that goes outside the current network must be sent to the default gateway (MORE)

What is mean by subnet mask?

The subnet mask is used by the Internet Protocol (IP) addressing scheme to determine if a packet of data is destined to a local or non-local network address. It is called a mask because it is used to to "mask" bits to determine if an address is on the same network. Masking is done by the Boolean bit (MORE)

What is the subnet mask of 172.30.1.0?

There are several possible subnet masks for the 172.30.1.0 subnetdepending on how many IP addresses you wish to allot. The mostcommon subnet would be 255.255.255.0, however the 0 could also beexchanged for 128, 192, 224, 240, 248, and 252 to allot a smallernumber of IP addresses.

Is 255.255.255.254 a vaild subnet mask?

According to the standard RFC3021 (IETF): Using a 31-bit prefix length leaves only two numbering possibilities(see Section 2.1), eliminating the use of a directed broadcast to thelink (see Section 2.2.1). The limited broadcast MUST be used for allbroadcast traffic on a point-to-point link with a 3 (MORE)

What is the default subnet mask for 10.10.0.0?

255.0.0.0 for a class A correct. but why? well, 10.10.0.0 is a class a network and all class "a" networks use a default subnet mask of 255.0.0.0. the range of class "a" networks is 1-126.

What is the default subnet mask of 183.91.104.16?

The default subnet mask for IPv4 address: 183.91.104.16 is 255.255.0.0 /16 The reason why is because "183" is between "128-191" which is a Class B address range. A Class B address range utilizes two Network addresses and two Host addresses which looks like this: N N H H. The "N's" being the 1st two (MORE)

How do you determine the subnet mask of 195.0.8.0?

you can't. There's no way to know from an IP address wha the subnet mask is. However, there are some likely guesses. Since 195.0.8.0 ends with a zero, the subnet is probably a 24-bit mask: 255.255.255.0 But it doesnt have to be. The network administrator knows for sure. fm

What is a subnet mask of ip 75.68.90.175?

The subnet mask would be 255.0.0.0 considering it to be class A address. you can check it by typing the IP address in the wireless network properties of IPv4 in your laptop.

How do get subnet mask?

To find out the current network mask, and assuming you have a Windows computer, either go to network properties, select "TCP/IP", and select it there (doesn't show the information if set to get address automatically), or open a command window and type "ipconfig".

What are the functions of subnet mask?

The function of a subnet mask is to extract the network ID portion of an IP destination address and determine whether an IP address exists on the local network or whether it must be routed outside the local network

What is my subnet mask and my gatway?

To find your subnet mask and gateway you will need to open acommand prompt as administrator. In the command prompt type"ipconfig/all" without the quotes. It will then display all of yournetwork information alone with those IPs.