Cp7101 design and management of computer networks-design concepts
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This document discusses network design concepts and products. It describes three orders of network design products - first, second, and third-order - which provide increasing levels of detail about network devices, locations, configurations and connectivity. Key network design products include network blueprints, a component plan, vendor selections, traceability, and metrics. The design process involves evaluating vendors and laying out the network topology. Architecture products document design decisions while analysis products identify requirements and problems.
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3) How network design provides physical detail to the architecture by selecting locations, equipment, and vendors.
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Some common network architectures include:
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2. Peer-to-Peer (P2P): Where devices act as equals, sharing resources without a central server.
3. Hybrid: Combines elements of client-server and P2P architectures.
4. Distributed: Where resources are spread across multiple devices, and processing is done in parallel.
5. Hierarchical: Where devices are organized in a tree-like structure, with higher-level devices controlling lower-level ones.
6. Mesh: Where each device connects to every other device, forming a web-like structure.
7. Torus: Where devices form a doughnut-shaped structure, commonly used in high-performance computing.
8. Bus: Where devices connect to a central cable or backbone, commonly used in computer hardware.
9. Star: Where devices connect to a central device, like a hub or switch.
10. Fully Connected: Where each device connects to every other device, forming a complete graph.
Network architecture is a crucial aspect of computer networking, as it determines the performance, scalability, and security of the network.
Would you like me to explain any of these architectures in more detail?
et's dive deeper into network architecture.
Network architecture can be divided into several layers, each with its own protocols and technologies:
1. Physical Layer (Layer 1): Defines the physical means of transmitting data, such as electrical signals, light waves, or radio waves.
2. Data Link Layer (Layer 2): Ensures error-free transfer of data frames between nodes on the same network, using protocols like Ethernet or Wi-Fi.
3. Network Layer (Layer 3): Routes data between different networks, using protocols like IP (Internet Protocol) and ICMP (Internet Control Message Protocol).
4. Transport Layer (Layer 4): Ensures reliable data transfer between devices, using protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).
5. Session Layer (Layer 5): Establishes, manages, and terminates connections between applications, using protocols like NetBIOS and SSH.
6. Presentation Layer (Layer 6): Converts data into a format that can be understood by the receiving device, using protocols like SSL/TLS (Secure Sockets Layer/Transport Layer Security).
7. Application Layer (Layer 7): Supports functions like email, file transfer, and web browsing, using protocols like HTTP (Hypertext Transfer Protocol), FTP (File Transfer Protocol), and SMTP (Simple Mail Transfer Protocol).
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Please reference Figure 1. Friendly Care Hospital is one of the biggest hospitals in DC. You have recently bought the hospital, naming it [Your Firstname Lastname] Hospital. For example, Jane Doe Hospital. Jane Doe Hospital owns a 5-story building and houses many departments that span multiple floors. Its Radiology department is spread across the first and second floors, connected by a dedicated local area network (LAN). The department has recently deployed a new “Radiology Images” application as part of their initiative to digitize patient records. However, the department staff sometimes faces long application delays during busy hours. It also experiences regular delays in Internet connectivity, FTPS services, web services, and email services.
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Figure 1. Current Friendly Care Hospital Network Design
Overview
In this project, you will study performance improvements in a congested, wired LAN/WAN environment that can be solved to varying degrees by a new IT infrastructure design and fully functional implementation in Packet Tracer. To learn more about Packet Tracer please read the Cisco Packet Tracer DS PDF. Later, in Phase II of the project, you will scale this design to a larger enterprise IT infrastructure.
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Packet Tracer is limited given it is a simulator. Be creative! For instance, if Packet Tracer does not have a file sharing service for a file sharing server, turn on any other related and relevant services that are available. As another example, use LAN and WAN protocols that are optimal given what the ver ...
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System Architecture: A Network Topology for Embedded Systems Device
A Comprehensive Handout by Mark John P. Lado, 2023
Abstract:
The importance of system architecture and network topology in the design and development of embedded systems devices is discussed in this context. The design of the device's hardware, firmware, software, and communication interfaces is included in the system architecture, while the physical connections and communication interfaces between the components are referred to as network topology. Optimization of performance, improvement of reliability, reduction of power consumption, enabling of scalability, and ensuring security can be achieved with a well-designed system architecture and network topology. The creation of an effective system architecture and network topology requires defining the requirements, identifying the system components and interfaces, designing the network topology, choosing the communication protocol, considering security, and testing and validating the design. Additionally, some commonly used shapes for creating system architecture and network topology diagrams for embedded systems devices are presented in this context.
Introduction
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- 1. CP7101-Design and Management of Computer Networks Design Concepts Dr.G.Geetha Professor /CSE Jerusalem College of Engineering
- 2. Design Concepts • Network analysis provides understanding, and network architecture provides conceptual (technology and topology) descriptions of the network, network design builds upon these to add physical detail and vendor, product, and service selections to the network.
- 3. first-order product • helps describe what is being evaluated and how many devices will be needed for a particular location,and is useful for procurement and general connectivity planning.
- 4. second-order product • Provide enough detail to fully understand the network, where devices are in relation to one another, their general locations, and where services such as QOS and VOIP should be enabled. • The greater amount of detail, including product types, hardware and software revision levels, device configurations, and a more explicit layout of the connectivity between devices, as well as with service providers.
- 5. Third-order product • adds location detail • While a second-order product may provide general locations (buildings, floors, rooms) a third-order product adds location detail. For example, the design could show rack layouts and where each device is located in a rack (or equivalent piece of hardware).
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- 7. Network blueprints • describe the physical aspects of your network design: • locations of network devices, servers, the cable plant, physical security and secure locations; how devices are interconnected, their interface types and speeds; as well as device specific and service- specific information. Blueprints usually also show the support infrastructure for the cable plant: building entrances, conduit,, and cable runs
- 8. component plan • which describes the mechanisms associated with that function, internal interactions among those mechanisms, and external interactions among functions. • Component plans can be complementary to the network blueprints, often providing function-specific information that normally would not be on blueprints. • For example, a component plan that describes security for the network might include configuration information for security devices, such as sets of ACLs or VPNs, and where in the network each set would be applied
- 9. vendor, vendor equipment, and service provider selections • These data consist of general and vendor- specific configuration information and protocol selections (if necessary). • For example, sets of ACLs mentioned earlier as part of the security component plan would be considered configuration details. Routing protocols, AS numbers, and specific routing and peering information would also be considered configurationdetails.
- 10. Traceability • Able to show traceability between design decisions, architecture decisions, requirements, and problem statements. • This is a powerful capability that will help you to address any questions and challenges that may arise regarding your design.
- 11. Metrics • that are used to describe how you measure success of the design, in the same way that metrics were coupled to requirements.
- 12. Design Process • The design process consists of vendor, equipment, and service-provider evaluations and network layout.
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- 14. Analysis products • Requirements • Flow information • Problem statements • Service information