OSI Reference Model Data Communication by Ravinder Nath Rajotiya - September 28, 20210 OSI Reference Model This model is based on a proposal by ISO revised in 1995. The model is called the ISO-OSI(open System Interconnection) as it deals with connecting open systems – that is systems that are open for communication with others. The principles that were applied to arrive at the seven layers can be briefly summarised as: A layers should be created where a different abstraction is needed Each layer should perform a well-defined function The function of each layer should be chosen with an eye toward defining internationally standardised protocols The layer boundaries should be chosen to minimize information flows across the interfaces The number of layers should be large enough that distinct function need not be thrown together in the
Introduction to Advanced Computer Networks Advanced Computer Network by Ravinder Nath Rajotiya - September 25, 2021September 28, 20210 ADVANCED COMPUTER NETWORKS Objective: To understand different network protocols with emphasis on TCP/IP protocol suite. Syllabus UNIT-I Network Layer: ARP,RARP,ICMP,IPv4 Routing Principles, Routing and overview, DVR and LSR, the IGRP and EIGRP, BGP, Routing Information Protocol (RIP), OSPF (IPv4 / IPv6). Multicasting in IP Environments-Broadcasting, Multicasting, IGMP and Multicast Listener Discovery (MLD). The Distance Vector Multicast Routing Protocol (DVMRP), Multicast OSPF (MOSPF), Protocol Independent Multicast (PIM). UNIT-II Transport Layer: Transport layer overview, UDP, TCP (Flow Control, Error Control, and Connection Establishment), TCP Protocol: TCP Tahoe, TCP Reno. UNIT-III Optical Networking: Introduction to Optical networking, its benefits and drawbacks, SONET layered architecture, frame format, SONET network configuration, its advantages and benefits. Quality of Service: Introducing QoS, Queue Analysis, QoS Mechanisms, Queue Management algorithms, Resource Reservation, Diffserv and Intserv. UNIT-IV Overview of latest concepts: TCP/IP Applications:
Network and Protocol Architecture Computer Engineering Data Communication by Ravinder Nath Rajotiya - April 19, 2019September 28, 20210 Objective: i. To learn about Network Architecture ii. To introduce the concepts of OSI and the service primitives iii. To introduce a simple client and server interaction on a connection oriented network Network: A network is an interconnection of a set of devices capable of communicating using well defined set of rules called protocol. Network allows us to share message, in the form of text, numbers, pictures/images, audio and video, among networked devices Network Architecture: A set of layers and protocols is called a network architecture.The specification of an architecture must contain enough information to allow an implementer to write a program or build for each layer so that it will correctly obey the appropriate protocol. Reference Model ISO-OSI: Open System Interconnect Historically, communication between devices of single