Principles of Computer Networks [4] The Network Layer

Others 2021-03-07 11:00:43 views: null

Thank content providers: Jinniu Wu Di software development studio
connected to one: Principles of Computer Networks [three] of the transport layer

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Chapter 4: Network Layer

1. Network layer services

1. Core tasks

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2. Main functions

a. Forward
b. Routing
c. Establish a connection

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2. Datagram network and virtual circuit network

1. Datagram Network

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2. Virtual circuit network

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Virtual circuit number
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The difference between datagram network and virtual circuit network

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3. Network interconnection and network interconnection equipment

1. Heterogeneous network interconnection

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2. Router

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Four, network layer congestion control

1. Network congestion

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Judging criteria:
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2. Network layer congestion control measures

a. Flow-aware routing

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b. Access control

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c. Flow adjustment

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1) How does the router sense that congestion has occurred?

Queuing delay through router output port [timer time]

2) When the router senses congestion, how to notify its upstream node and make the upstream node reduce the sending rate?

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d. Load shedding

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Five, the Internet network layer

1. IPv4 protocol

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a.IP datagram format

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b. IP datagram fragmentation

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2. IPv4 addressing

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3. Dynamic Host Configuration Protocol

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4. Network address translation

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5.ICMP

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ICMP message classification
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6.IPv6

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Six, routing algorithm and routing protocol

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1. Classification of routing algorithms

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2. Link state routing algorithm

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3. Distance vector routing algorithm

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4. Hierarchical routing

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5. Internet routing protocol

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a.RIP

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b.OSPF

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c.BGP

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d. The difference between the three protocols

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Next: Computer Network Principle [5] Data Link Layer and Local Area Network

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Origin blog.csdn.net/weixin_43606158/article/details/111676704
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