'Local link cost' diaporamas de présentation

Chapter 4 Network Layer (Part II)

Chapter 4 Network Layer (Part II). SCSC512. 4. 1 Introduction 4.2 Virtual circuit and datagram networks 4.3 What’s inside a router 4.4 IP: Internet Protocol Datagram format IPv4 addressing ICMP IPv6. 4.5 Routing algorithms Link state Distance Vector Hierarchical routing

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Chapter 4: Network Layer

4. 1 Introduction 4.2 Virtual circuit and datagram networks 4.3 What’s inside a router 4.4 IP: Internet Protocol Datagram format IPv4 addressing ICMP IPv6. 4.5 Routing algorithms Link state Distance Vector Hierarchical routing 4.6 Routing in the Internet RIP OSPF BGP

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Chapter 4: Network Layer

Chapter goals: understand principles behind network layer services: routing (path selection) dealing with scale how a router works advanced topics: IPv6, multicast instantiation and implementation in the Internet. Overview: network layer services routing principle: path selection

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Network Layer: Routing

Goals: understand principles behind network layer services: routing (path selection) dealing with scale how a router works Previous two lectures instantiation and implementation in the Internet. Overview: network layer services routing principle: path selection hierarchical routing IP

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Chapter 4: Network Layer

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Chapter 4: Network Layer, partb

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Chapter 4: Network Layer

Chapter goals: understand principles behind network layer services: routing (path selection) dealing with scale how a router works advanced topics: IPv6, multicast instantiation and implementation in the Internet. Overview: network layer services routing principle: path selection

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Data Communication and Networks

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Networking

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Week 6 Routing Concepts

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Chapter 4: Network Layer

Chapter goals: understand principles behind network layer services: routing (path selection) dealing with scale how a router works advanced topics: IPv6, multicast instantiation and implementation in the Internet. Chapter Overview: network layer services routing principle: path selection

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14: Intro to Routing Algorithms

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Lecture 19 Network Layer (Routing Algorithms)

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Network layer functions

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Network layer functions

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Internet

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2004.4.15.

2004.4.15. Routing Algorithms Link State Distance Vector HW #4 and HW #5 Mid-term. Graph abstraction for routing algorithms: graph nodes are routers graph edges are physical links link cost: delay, $ cost, or congestion level. A. D. E. B. F. C. Routing protocol. Routing. 5.

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Network Layer

Network Layer. Network layer. Physical layer: move bits between physically connected stations Data link layer: move frames between physically connected stations Network layer: move packets from source A to destination B where A and B can be world-apart. Main Network Layer Design Issues.

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Distance Vector Algorithm

Distance Vector Algorithm . Bellman-Ford Equation (dynamic programming) Define d x (y) := cost of least-cost path from x to y Then d x (y) = min {c(x,v) + d v (y) } where min is taken over all neighbors v of x. v. 5. 3. 5. 2. 2. 1. 3. 1. 2. 1. x. z. w. u. y. v.

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Network layer

transport segment from sending to receiving host on sending side encapsulates segments into datagrams on rcving side, delivers segments to transport layer network layer protocols in every host, router Router examines header fields in all IP datagrams passing through it. network data link

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