Interior Gateway Routing Protocol Advanced Computer Network by Ravinder Nath Rajotiya - October 14, 20210 Interior Gateway Routing Protocol IGRP is a proprietary distance vector routing protocol used to communicate routing information within a host network. It was invented by Cisco. IGRP manages the flow of routing information within connected routers in the host network or autonomous system Click here to view the PPT of IGRP - Interior Gateway Routing Protocol IGRP
Link State Routing (LSR) Advanced Computer Network by Ravinder Nath Rajotiya - October 14, 20210 Type of Routing Protocols: Unicast Routing Protocol Multicast Routing Protocol Broadcast Routing Protocol There are three major protocols for unicast routing: Distance Vector Routing Link State Routing Path-Vector Routing Link State Routing – Link state routing is the second family of routing protocols. While distance-vector routers use a distributed algorithm to compute their routing tables, link-state routing uses link-state routers to exchange messages that allow each router to learn the entire network topology. Based on this learned topology, each router is then able to compute its routing table by using the shortest path computation. Features of link state routing protocols – Link state packet – A small packet that contains routing information. Link state database – A collection of information gathered from the link-state
Distance Vector Routing (DVR) Advanced Computer Network by Ravinder Nath Rajotiya - October 14, 20210 Distance Vector Routing Distance Vector protocols are the simplest among Routing Protocols. it use the distance and direction (vector) to find paths to destinations. A router which is running a Distance Vector routing protocol informs its neighbours about the network topology changes periodically, using limited broadcasts using destination IP address 255.255.255.255. Distance Vector protocols use the Bellman-Ford algorithm for finding best paths to destinations. The PPT on DVR can be viewed by clicking the following link: Click the link to open PPT -- Distance Vector Routing (DVR)
IPv4 Advanced Computer Network by Ravinder Nath Rajotiya - October 13, 2021October 14, 20210 Internet Protocol vesion-4 (IPV4) The frame transmitted is of following type where the type field indicates what the next header will be and where it is to be processed. If the type field is 0x800 then it is IP and the next layer network/internet layer should process it Prior to discarding the frame header and trailer, it is necessary for the next set of instructions to be processed to be determined from the frame header. As highlighted, this is identified by determining the field value in the type field, which in this instance represents a frame that is destined for the IP protocol following completion of the frame process. The key function of the frame is to determine whether the intended
Internet Control Message Protocol (ICMP) Advanced Computer Network by Ravinder Nath Rajotiya - October 13, 20210 ICMP The Internet Control Message Protocol is an integral part of IP designed to facilitate the transmission of notification messages between gateways and source hosts where requests for diagnostic information, support of routing, and as a means of reporting errors in datagram processing are needed. The purpose of these control messages is to provide feedback about problems in the communication environment, and does not guarantee that a datagram will be delivered, or that a control message will be returned. ICMP (Routing) ICMP Redirect messages represent a common scenario where ICMP is used as a means of facilitating routing functions. In the example, a packet is forwarded to the gateway by host A based on the gateway address of host A. The gateway