Asked by: Acher Cubillas
technology and computing computer networking

What is the difference between classful and classless routing?

Last Updated: 14th March, 2020

Classful vs Classless Routing Protocols.Routing protocols can be classful orclassless: Classful routing protocols DO NOT send thesubnet mask along with their updates. Classless routingprotocols DO send the subnet mask along with theirupdates.

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Similarly, it is asked, is OSPF Classful or classless?

RIP-1 and IGRP are grouped under classfulprotocols, whereas the more recently developed RIP-2, EIGRP,OSPF, IS-IS, and BGP fall in the classless category.The Exterior Gateway Protocol (EGP), the predecessor of the BorderGateway Protocol (BGP), which currently is considered obsolete, isalso a classful protocol.

Also, what are Classful IP addresses? A classful network is a network addressingarchitecture used in the Internet from 1981 until the introductionof Classless Inter-Domain Routing in 1993. The method divides theIP address space for Internet Protocol version 4(IPv4) into five address classes based on the leadingfour address bits.

Correspondingly, what are the differences between Classful addressing and classless addressing in IPv4?

The main difference between classful andclassless addressing is that classless addressingallows allocating IP addresses more efficiently than classfuladdressing. Every device in a network has an IP address.An IP address consists of 32 bits. Every 8 bits is an octet,and they are separated by a dot.

What is Classful protocol?

Classful Versus Classless RoutingProtocols. Classful routing protocols do notcarry subnet masks; classless routing protocols do. Olderrouting protocols, including RIP and IGRP, areclassful. Newer protocols, including RIP-2, EIGRP,and OSPF, are classless. RIP-2 updates carry a subnet mask in eachroute entry.

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Which layer is OSPF?

Both BGP and RIP are application layer protocolsusing TCP 179 and UDP 520 respectively for communication.OSPF and EIGRP are network layer protocols usingprotocol number 89 and 88 respectively forcommunication.

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Is OSPF a distance vector protocol?

Although OSPF operates as a link-state routingprotocol within an area, its behavior between areas ispredominantly distance vector. R4, although it belongs toboth areas, will not propagate LSAs from one area to the other, asit has no access to area 0.

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What is classless and Classful?

Classless addressing uses a two-part view of IPaddresses, and classful addressing has a three-part view.With classless addressing, the network and subnet parts fromthe classful view are combined into a single part, oftencalled the subnet or prefix, with the address ending in the hostpart.

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What is classless IP?

Classless IP addressing means you can use anysubnetmask you want, even assigning partial blocks. For examplesubnet is a class B network.

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Is Vlsm Classful or classless?

Classful or classless (use of VLSM):Classful routing protocols do not include the subnet maskand cannot support variable-length subnet mask (VLSM).Classless routing protocols include the subnet mask in theupdates.

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What is Vlsm in networking?

Variable-Length Subnet Masking (VLSM) amounts to"subnetting subnets," which means that VLSM allowsnetwork engineers to divide an IP address space into ahierarchy of subnets of different sizes, making it possible tocreate subnets with very different host counts without wastinglarge numbers of addresses.

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What is the difference between IPv4 and IPv6?

IPv4 & IPv6 are both addresses thatare used to identify machines connected to a network. In principle,they are the same, but they are different in how they work.IPv4 is a numeric address, and its binary bits are separatedby a dot (.) IPv6 is an alphanumeric address whose binarybits are separated by a colon (:).

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How do classless routing protocols work?

Classless routing protocols do send the subnetmask with their updates. Thus, Variable Length Subnet Masks (VLSMs)are allowed when using classless routing protocols.Examples of classful routing protocols include RIPv1 andIGRP. Examples of classless routing protocols include RIPv2,EIGRP, OSPF, and IS-IS.

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What is IP classes in networking?

TCP/IP defines five classes of IPaddresses: class A, B, C, D, and E. Each class has arange of valid IP addresses. The system of IP addressclasses was developed for the purpose of Internet IPaddresses assignment. The classes created were based on thenetwork size.

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What is the network ID?

Network identity (network ID) is a portionof the TCP/IP address that is used to identify individuals ordevices on a network such as a local area network orthe Internet. A network ID is also known as networkidentification or NetID.

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What is IP addressing in networking?

From Wikipedia, the free encyclopedia. An InternetProtocol address (IP address) is a numerical labelassigned to each device connected to a computer network thatuses the Internet Protocol for communication. An IP addressserves two main functions: host or network interfaceidentification and location addressing.

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How do I find my host ID IP address?

How to Calculate Host ID
  1. Obtain the subnet mask of the device. For example, on a Windowscomputer, open a command prompt and type "ipconfig" and press the"Enter" key. The most common subnet mask is
  2. View the device's IP address. On a Windows computer, the"ipconfig" command also reveals the IP address.

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How many bits are there in the IP address and port number?

Networks using the TCP/IP protocol route messagesbased on the IP address of the destination. RecommendedReading: Learn more about the TCP/IP protocol. An IPaddress consists of 32 bits, often shown as 4octets of numbers from 0-255 represented in decimalform instead of binary form.

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What is network and host in IP address?

An IP address is a 32-bit number that uniquelyidentifies a host (computer or other device, such as aprinter or router) on a TCP/IP network. IP addressesare normally expressed in dotted-decimal format, with four numbersseparated by periods, such as