Types of network protocols and their functions pdf

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types of network protocols and their functions pdf

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sctp in computer networks

Before we learn about protocol testing, let's understand: What is Protocol? When a computer communicates with each other, there is a common set of rules and conditions that each computer has to follow.

In other words, protocols determine how data are transmitted between computing devices and over networks. The primary goal of protocol testing is to check the structure of packets which are sent over a network using protocol testing tools. Routers and switches are used during the test to form parts of devices and products under testing. Routed and Routing Protocols Protocols are classified into two categories routed protocols and routing protocols Routed Protocols : Routed protocols can be used to send the user data from one network to another network.

It carries user traffic like e-mails, web-traffic, file transfers, etc. Routing Protocols : Routing protocols are network protocols that determine routes for routers. It is only used between routers. In simple terms, a router is like a bus used for transportation while routing protocols are signals on the road. Based on the type of communication different protocols are used.

Layer 2 : It is a data link layer. Layer 3 : It is a network layer that determines the best available path in the network for communication. An IP address is an example of layer3. How to do Protocol Testing For protocol testing, you need protocol analyzer and simulator Protocol analyzer ensures proper decoding along with call and session analysis.

While simulator simulates various entities of networking element Usually, a protocol testing is carried out by DUT device under test to other devices like switches and routers and configuring protocol in it Thereafter checking the packet structure of the packets sent by the devices It checks scalability, performance, protocol algorithm etc.

During protocol testing basically, three checks are done. Correctness : Do we receive packet X when we expected Latency : How long does a packet take to transit the system Bandwidth : How many packets we can send per second Protocol testing can be segregated into two categories.

Stress and Reliability Tests and Functional Tests. While Functional Testing includes negative testing, conformance testing, interoperability testing, etc. Interoperability Testing : The interoperability for different vendors are tested. This testing is done after conformance testing is done on the appropriate platform Network feature Testing: The features of networking products are tested for functionality with reference to the design document.

For example, features can be port-security on a switch, ACL on a router etc. It should not allow a user to access Line speed Check the device operating at 10Gbps speed, utilizing all the available bandwidth to handle incoming traffic Protocol conversation rate Track a TCP conversation between two devices and verify that each device engaged in a correct behavior Response time for session initiation Measure the response time of a device to an invite request for session initiation Tools for Protocol Testing Let's discuss the most important testing tools used to verify protocols Scapy For Packet Crafting Scapy is a powerful interactive packet manipulation program.

It enables you to Create packets Decode packets on the network Capture packets and analyze them Inject packets into the network So basically, scapy mainly does two things: receiving answers and sending packets. You define the packets, it sends them, receives answers, matches requests with answers and returns a list of packet couples and a list of unmatched packets.

It can also handle other things as well like trace-routing, unit tests, attacks or network discovery, developing new protocols, probing, etc. Scapy enables us to write a Python script that allows us to perform a task like sending and receiving packets or sniffing packets. For example, scapy can sniff the data packet by using a Python script. The command to open the getdit entered in the editor gedit scapysniff.

Scapy also as an array of command for sending and receiving packets at the same time Download Scapy Wireshark Tools For Analysis Tools used for protocol testing- Wireshark.

It allows to capture packets in real time and display them in human-readable form. It allows you to dig deep into the network traffic and inspect individual packets by using color coding and filters. Wireshark captures packets that helps to determine when the session is getting established, when the exact data travel was initiated and how much data is sent each time, etc.

For example, a coffee vending machine that gives you coffee on inserting a dollar coin but does not respond if anything less than a dollar is inserted into it. To program such machines TCCN3 language is used. It allows us to run our test before an actual coffee machine is available as a product.

Once it is done we will connect the TCCN3 test suite with the external device. The test system emits stimuli dollar coin and receives responses coffee. The stimuli adapter obtains stimuli from the test system and passes them to the system under test.

The response adapter waits for responses of the system under test and passes them to the test system. TCCN3 core language exists in text format apart from other formats like tabular, graphical and presentation. You can do functional, load, Endurance Testing Endurance Testing is non-functional type of software testing where a software is What is RAD Model? Home Testing. Must Learn! Big Data. Live Projects. Routed Protocols : Routed protocols can be used to send the user data from one network to another network.

It should not allow a user to access Line speed Check the device operating at 10Gbps speed, utilizing all the available bandwidth to handle incoming traffic Protocol conversation rate Track a TCP conversation between two devices and verify that each device engaged in a correct behavior Response time for session initiation Measure the response time of a device to an invite request for session initiation. Parallel Testing Parallel Testing is a software testing type in which multiple versions or Build two different VLANs.

Check the visibility between hosts on different VLANs. Check how spanning tree protocol avoids the formation of cycles in the network, blocking redundant links, in presence of VLANs too. Generate telephone calls and check whether the telephone switch still operates or its performance degrades.

Enter the incorrect key and check the user for authentication. It should not allow a user to access. Check the device operating at 10Gbps speed, utilizing all the available bandwidth to handle incoming traffic. Track a TCP conversation between two devices and verify that each device engaged in a correct behavior.

Measure the response time of a device to an invite request for session initiation.

What Is a Network Protocol, and How Does It Work?

In the field of networking, the specialist area of Network Security consists of the provisions made in an underlying computer network infrastructure, policies adopted by the network administrator to protect the network and the network-accessible resources from unauthorized access, and consistent and continuous monitoring and measurement of its effectiveness or lack combined together. The terms Network Security and Information Security are often used interchangeably. Network Security is generally taken as providing protection at the boundaries of an organization by keeping out intruders hackers. Information Security, however, explicitly focuses on protecting data resources from malware attack or simple mistakes by people within an organization by use of Data Loss Prevention DLP techniques. One of these techniques is to compartmentalize large networks with internal boundaries. Employees have to cross these boundaries and be authenticated when attempting to access protected information. Unable to display preview.

Types of Network Protocols and Their Uses

By Priya Pedamkar. A Network Protocol is a group of rules accompanied by the network. Network protocols will be formalized requirements and plans composed of rules, procedures, and types that describe communication among a couple of devices over the network. The protocol can be described as an approach to rules that enable a couple of entities of a communication program to transfer information through any type of variety of a physical medium. The protocol identifies the rules, syntax, semantics, and synchronization of communication and feasible error managing methods.

Which one of the following is a cryptographic protocol used to secure HTTP connection? Sockets are created only during the lifetime of a process of an application running in the node. Further, SCTP supports multiple parallel streams of chunks for both data and control information.

Chapter 2: Protocol

A protocol is a set of rules that governs the communications between computers on a network. In order for two computers to talk to each other, they must be speaking the same language. Many different types of network protocols and standards are required to ensure that your computer no matter which operating system, network card, or application you are using can communicate with another computer located on the next desk or half-way around the world. The complexity of these layers is beyond the scope of this tutorial; however, they can be simplified into four layers to help identify some of the protocols with which you should be familiar see fig 1.

The functions of protocols are quite essential in the process of Networking. There are a number of protocols which exist and are used for various purposes. In fact, each of the protocol has been developed keeping in mind a particular situation or problem.

This tutorial explains types of network protocols and their functions in details. Understanding these basic network protocols with functions will help you in managing network effectively. Learn how the most common types of network protocols works in computer network. The main difference between the two protocols is that TCP uses a connection-oriented transport, while UDP uses a connectionless type of communication. When the TCP protocol is used, a special connection is opened up between two network devices, and the channel remains open to transmit data until it is closed. On the other hand, a UDP transmission does not make a proper connection and merely broadcasts its data to the specified network address without any verification of receipt. For certain types of applications and services, a TCP connection makes more sense, while other types are more efficiently provided by UDP communication.

How do Common Networking Protocols Function

Introduction to Types of Networking Protocols

Before we learn about protocol testing, let's understand: What is Protocol? When a computer communicates with each other, there is a common set of rules and conditions that each computer has to follow. In other words, protocols determine how data are transmitted between computing devices and over networks. The primary goal of protocol testing is to check the structure of packets which are sent over a network using protocol testing tools. Routers and switches are used during the test to form parts of devices and products under testing. Routed and Routing Protocols Protocols are classified into two categories routed protocols and routing protocols Routed Protocols : Routed protocols can be used to send the user data from one network to another network. It carries user traffic like e-mails, web-traffic, file transfers, etc.

COMMENT 1

  • A network protocol is an established set of rules that determine how data is transmitted between different devices in the same network. Odette G. - 16.05.2021 at 12:34

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