What is supernetting used for?

Why CIDR is called supernetting?

If you combine multiple classful networks it is supernetting, when you make them smaller you are subnetting . CIDR is a condition where you no longer consider the classful boundries. You no longer need to think of the words subnetting or supernetting really because everything is a simple division between network and host.

How is math used in computer networking?

In computer networking Math and binary operation are used in calculating subnet masks or in subnetting or in supernetting etc.

What is the aggregation of IP network addresses advertised as a single classless network address?

Supernetting

Difference between supernetting and subnetting?

SUBNET: subnet is a group of networks having same network id. subnet increase the number of hosts with same network address, as result it reduces the wastage of addresses. In subnetting bits of hostId will be captured by networdId. SUPERNET: supernet makes all the hosts with in a range of network address belong to a same group. This reduces the entries in the network address table. Supernetting combines the octets of the address.

A node on a network has an IP address of 140.133.28.72 and its subnet mask is 255.248.0.0 What type of subnetting has been used on this networ?

Supernetting 140.128.0.0 (10001100 10000000 00000000 0000000 0

Which network and mask combination requires the use of a classless addressing solution?

The network and mask combination that requires the use of a classless addressing solution is 172.16.0.0/12. Classless routing is supernetting and is known as CIDR, Classless Inter-Domain Routing.

What do you mean by classless addressing?

CLASSFUL ROUTING PROTOCOL. It means it will not carry the routing mask information while routing updates or routing advertisements. it will carry just only the ip-address information's. It will assume just default mask information's. Example : class-A 255.0.0.0 Class-B 255.255.0.0 Class-C 255.255.255.0 So classful routing protocols will not support the VLSM and Supernetting Example of classful routing protocols is 1. RIP V1 2. IGRP CLASSLESS ROUTING PROTOCOL These kind of routing protocols will carry the subnet mask information's while doing the routing updates or routing advertisements. So it will support the VLSM and Supernetting, also support noncontiguous networks Example RIP V2 EIGRP OSPF CLASSFUL ROUTING PROTOCOL. It means it will not carry the routing mask information while routing updates or routing advertisements. it will carry just only the ip-address information's. It will assume just default mask information's. Example : class-A 255.0.0.0 Class-B 255.255.0.0 Class-C 255.255.255.0 So classful routing protocols will not support the VLSM and Supernetting Example of classful routing protocols is 1. RIP V1 2. IGRP CLASSLESS ROUTING PROTOCOL These kind of routing protocols will carry the subnet mask information's while doing the routing updates or routing advertisements. So it will support the VLSM and Supernetting, also support noncontiguous networks Example RIP V2 EIGRP OSPF

What is CIDR?

CIDR (Classless Inter-Domain Routing, sometimes known as supernetting) is a way to allocate and specify the Internet addresses used in inter-domain routing more flexibly than with the original system of Internet Protocol (IP) address classes. As a result, the number of available Internet addresses has been greatly increased. CIDR is now the routing system used by virtually all gateway hosts on the Internet's backbone network. The Internet's regulating authorities now expect every Internet service provider (ISP) to use it for routing.

What is supernetting explain with example?

IntroductionBecause subnet masks can get very confusing, the creators of this wonderful network technology also made available a few things to make life somewhat easier.The following chart is really a summary of what we've seen so far. It gives you a good idea of the networks we can combine and the result we'd see.The Supernetting/CIDRchartThere are four columns available in our chart:The CIDR Block, the Supernet Mask, Number of Class C Networks and the Number of Hostscolumn.Class CCIDR BlockSupernet MaskNumber of Class C NetworksNumber of Hosts/14255.252.0.01024262144/15255.254.0.0512131072/16255.255.0.025665536/17255.255.128.012832768/18255.255.192.06416384/19255.255.224.0328192/20255.255.240.0164096/21255.255.248.082048/22255.255.252.041024/23255.255.254.02512/24255.255.255.01254/25255.255.255.1281/2126/26255.255.255.1921/462/27255.255.255.2241/832/28255.255.255.2401/1616/29255.255.255.2481/328/30255.255.255.2521/644I am going to explain the meaning of each column, although you probably already know most of them.The CIDR BlockThe CIDR Block simply represents the number of bits used for the subnet mask. For example,/14 means 14 bits assigned to the subnet mask, it is a lot easier telling someone you have a14 bit subnet mask rather than a subnet mask of 255.252.0.0 :)Note: In the above paragraph, I called the 14 bits as a subnet mask, when in fact it's a supernet mask, but because when you configure any network device, the field you will need to enter the value is usually named as the 'subnet mask', I decided to name it 'subnet mask' aswell, in order to avoid confusion.I'd like you to pay particular attention to the CIDR Block /24, and /25 to /30. These blocks are highlighted in yellow and blue because I want them to grab your attention :)When we use a CIDR Block of 24 (24 bit subnet mask) we are not Supernetting ! This is a default subnet mask for a Class C network. With CIDR Blocks /25 to /30 we are actuallySubnetting and not Supernetting !Now you might wonder why I have them in the chart. The fact is that those particular CIDR Blocks are valid, regardless of whether applying them to a network means we are Subnettingand not Supernetting. If you have dealt with any ISPs and IP Address assignments, chances are you would have been given your IP Addresses in CIDR format.A good example is if you wanted a permanent connection to your ISP and only required 2 IP Addresses, one for your router and one for your Firewall, you would be assigned one /30 CIDRBlock. With such a subnet mask you will have 4 IP Addresses, from which 2 will be reserved (one for the Network address and one for the Broadcast address) and you're left with 2 that you can assign to your hosts (router and firewall).The Supernet MaskBasically, this is your Subnet mask. When you configure the devices that will be attached to the specified network, this is the value you will enter as a Subnet mask. It's also the decimal value the CIDR Block specifies. For example, a /24 CIDR block means a 24 bit Subnet mask, which in its turn translates to 255.255.255.0 :) Simple stuff !Number of Class C NetworksThis number shows us how many Class C Networks are combined by using a specific Supernet mask or, if you like, CIDR Block. For example, the /24 CIDR Block, 255.255.255.0 Supernet mask is 1 Class C Network, whereas a /20 CIDR Block, 255.255.240.0 Supernet mask is 16 Class C networks.Number Of HostsThis value represents the number of hosts per Supernet. For example, when we use a /20CIDR Block, which means a Subnet (or Supernet) mask of 255.255.240.0, we can have up to4096 hosts. Pretty straightforward stuff.There is one thing you must be careful of though ! The value 4096 does not represent the valid, usable IP Addresses. If you wanted to find out how many of these IP Addresses you can actually use, in other words, assign to hosts, then you simply take 2 IP Addresses from that number (the first and last IP Address), so you're left with 4094 IP Addresses to play with :)Why take 2 away ? You shouldn't be asking questions like that if you have read the IP and Subnetting sections but I'll tell you anyway :) One is reserved for the Network Address and one for the Broadcast Address of that network !SummaryThat completes the explanation of the Supernetting/CIDR chart. You will see that Supernetting and Subnetting have quite a few things in common, and this is simply because they work on the same principle.Again, if you have the whole topic, or certain sections hard to understand, you should give yourself a small break, and then come back for another round :)

Is thalidomide used to treat cancer?

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When do you use are or is?

He is. She is. It is. They are. We are. You are. (I am).

What were Aboriginal tools mostly used for?

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