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CS-NoteBook
  • Introduction
  • CS144
    • concise introduction to Internet
      • 1.1 Networked Applications
      • 1.2 The 4 Layer Internet
      • 1.3 IP
      • 1.4 A Day in the Life of a Packet
      • 1.5 Principle: Packet Switching
      • 1.6 Principle:Layering
      • 1.7 Principle: Encapsulation
      • 1.8 Byte order and packet formats
      • 1.9 name and addresses:IPv4
      • 1.10 Longest Prefix Match for Link Layer
      • 1.11 Address Resolution Protocol(ARP)
      • 1.12 Summary
    • Transport Layer
      • 2.1 The TCP Service Model
      • 2.2 UDP service model
      • 2.3 ICMP(Internet Control Message Protocol 互联网报文控制协议)
      • 2.4 The End-to-End Principle
      • 2.5 Error Detection:3 schemes (Checksum,CRC and MAC)
      • 2.6 Finite State Machines(有限状态机)
      • 2.7 Flow Control
      • 2.8 Sliding window
      • 2.9 Retransmission Strategies
      • 2.10 TCP Header
      • 2.11 TCP Setup and Teardown
      • 2.12 Recap
    • Package Switching
      • 3.1 The history of Internet
      • 3.2 What is packet switching
      • [3.3 End-to-end delay and Queueing delay
      • 3.4 Playback Buffer(回放缓存区)
  • CS 61C
    • 1.4 C Memory Mangement, Usage
    • 1.5 Intro to Assembly Language, MIPS Intro
    • 1.5 extra bits operation
  • CS 61B
  • CS 61A
    • Function
    • Names
    • The Art of the Function
    • Control
    • Higher-Order Function
    • Recursive Function
    • List
    • Non-Local Assignment
    • Iterators
    • Objects
    • Data Abstraction
    • OOP
    • Inheritance
    • Representations
    • Decomposition
    • Scheme
    • Exceptions
    • Calculator
    • Interpreters
    • Declarative_Programming
    • Table
    • Aggregation
      • More_recursion
    • Databases
    • Distributed_Data
    • Tail Recursion
    • Exercises
      • lab00
      • lab01
      • hw01
      • tree Recursion example -- give Change
  • The Web DevelopMent Bootcamp
    • html5
    • css
    • bootstrap3
    • bootstrap4
    • javascript expression
    • javascript function
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  1. CS144
  2. concise introduction to Internet

1.10 Longest Prefix Match for Link Layer

Previous1.9 name and addresses:IPv4Next1.11 Address Resolution Protocol(ARP)

Last updated 4 years ago

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路由器选择路径的方案

  • 算法利用IP路由器从转发表中选择匹配项

  • 转发表是一组 CIDR 条目((无类别域间路由(Classless Inter-Domain Routing) CIDR表示方法：IP地址/网络ID的位数 192.168.23.35/21 )

    • 一个地址可能匹配多个条目

  • 算法:使用最长匹配前缀的转发条目

routeTable