What is classful and classless routing protocol?

In classful routing, address is divided into three parts which are: Network, Subnet and Host. While in classless routing, address is divided into two parts which are: Subnet and Host. 6. In classful routing, regular or periodic updates are used.

What is the difference between classful and classless routing?

Routing protocols can be classful or classless: Classful routing protocols DO NOT send the subnet mask along with their updates. Classless routing protocols DO send the subnet mask along with their updates.

Is OSPF a classless or classful protocol?

Classful routing protocols do not carry subnet masks; classless routing protocols do. Older routing protocols, including RIP and IGRP, are classful. Newer protocols, including RIP-2, EIGRP, and OSPF, are classless.

What are classful routing protocols and classless routing protocols and give two examples of each?

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

What is classful protocol?

A classful network is a network addressing architecture used in the Internet from 1981 until the introduction of Classless Inter-Domain Routing in 1993. The method divides the IP address space for Internet Protocol version 4 (IPv4) into five address classes based on the leading four address bits.

Is static routing classful or classless?

Static routes are used to solve issues pertaining to routing between classfull and classless. No you cannot. Static routes can be either, depending on the larger routing context. If you are using static routes only with classful masks, there is no harm in disabling classless routing.

What is an IGP and EGP?

An interior gateway protocol (IGP) is a routing protocol that is used to exchange routing information within an autonomous system (AS). In contrast, an Exterior Gateway Protocol (EGP) is for determining network reachability between autonomous systems and makes use of IGPs to resolve routes within an AS.

Why do we need classless routing?

Classless routing – It refers to a type of routing where the router uses the default route to forward traffic if no other specific routes are found. It includes subnet mask information in the routing update and is supported by RIPv2, OSPF, and EIGRP protocols.

What is classful subnetting?

Classful subnetting is a method of splitting a classful network number into two or more smaller subnets. The subnets will all be the same size, determined by the maximum number of hosts per subnet. A single custom subnet mask is used to configure the subnets.