Modelos de Protocolos
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Transcript of Modelos de Protocolos
Overview, Overview, Protocols, OSI Protocols, OSI Model, TCP/IP Model, TCP/IP
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Model, TCP/IP Model, TCP/IP basicsbasics
Data Network Fundamentals Data Network Fundamentals
Objectives� Describe how networks impact our daily lives .
� Describe the role of data networking in the human network.
� Identify the opportunities and challenges posed by converged networks.
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converged networks.
� Describe the characteristics of network architectures: fault tolerance, scalability, quality of service an d security.
� Describe OSI Model and TCP/IP architecture
How Networks Impact Daily Life
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How Networks Impact Daily Life� IM, Wikis , Blogs, Podcasting, and Collaboration
Tools–Instant messaging
•Real time communication between 2 or more people based on typed text
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people based on typed text–Weblogs (Blogs)
•Web pages created by an individual
–Podcasting•Website that containsaudio files availablefor downloading
How Networks Impact Daily Life
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Converged networkA type of network that can carry voice, video & dat a over the same network
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Network Architecture Characteristics� Characteristics that are addressed by network
architecture design–Fault tolerance
–Scalability
–Quality of service
–Security
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–Security
Network Architecture Characteristics� Packet switching helps improve the resiliency and fault tolerance
of the Internet architecture
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Network Architecture Characteristics� Characteristics of the Internet that help it scale to
meet user demand–Hierarchical
–Common standards
–Common protocols
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Network Architecture Characteristics� Quality of Service and the mechanisms necessary to
ensure it
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Network Architecture Characteristics
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Network Architecture Characteristics� QoS strategy for a given type of traffic
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Network Architecture Characteristics� Why networks must be secure ??
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Network Architecture Characteristics� Describe basic measures to secure data networks
–Ensure confidentialityconfidentiality through use of
•User authentication
•Data encryption
–Maintain communication integrity through use of
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•Digital signatures
–Ensure availability through use of
•Firewalls
•Redundant network
architecture
•Hardware without a single
point of failure
Network Structure� Network:
data or information networks capable of carrying ma ny different types of communications
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Data Networking Role, Components, and Challenges
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Network Structure� End Devices and their Role in the Network
–End devices form interface with human network & com munications network
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Network Types
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Network Types: Internet
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Function of Protocol in Network Communication
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Layers with TCP/IP and OSI ModelA protocol model
provides a model that closely matches the structure of a particular protocol suite.
A reference model
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A reference model
provides a common reference for maintaining consistency within all types of network protocols and services.
OSI Model
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TCP/IPTCP/IP
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Compare OSI and TCP/IP model
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The Communication Process
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PDU and encapsulation
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Process of sending and receiving messages
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Addressing and Naming Schemes
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Application LayerApplication Layer
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Applications – The Interface Between Human and Data Networks
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Applications – The Interface Between Human and Data Networks
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Client and server processes in data networks
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Server Farm
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DNS ServicesDNS Services
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OSI Transport OSI Transport LayerLayer
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LayerLayer
Transport Layer Role and Services
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Major functions of the transport layer and the role it plays in data networks
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Supporting Reliable Communication
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� Identify the basic characteristics of the UDP and T CP protocols
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Port number and their role in the TCP and UDP Port number and their role in the TCP and UDP protocols.protocols.
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Application and Operation of TCP Mechanisms
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Segmentation and reassemblySegmentation and reassembly ..
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Managing TCP Sessions
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TCP protocol and acknowledgement numbersTCP protocol and acknowledgement numbers
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Window size, data loss and congestion during a session
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Port numbers establishing TCP sessionsPort numbers establishing TCP sessions
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UDP Protocol
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UDP Protocol
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OSI Network OSI Network LayerLayer
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LayerLayer
Network Layer Protocols and Internet Protocol (IP)
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Basic characteristics and the role of the IPv4
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IP protocol as it is connectionless
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IP protocol as it is considered an unreliable proto colIP protocol as it is considered an unreliable proto col
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IP as it is media independentIP as it is media independent
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Encapsulation in IP packetsEncapsulation in IP packets
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Header fields in the IPv4 protocol
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Communication problems that emerge when very large numbers of devices are included in one large networ k
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� IP Address
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Fundamentals of Routes, Next Hop Addresses and Packet Forwarding
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�Routed process
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Classify and Define IPv4 Addresses
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Define public address and private address
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Purpose of several special addresses
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Assigning Addresses
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How devices can obtain addresses?
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Grouping Devices into Networks and Hierarchical Addressing
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Calculating Addresses
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Calculating Addresses
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