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Network layer - forwarding (IP, ARP, DCHP, ICMP, network layer addressing, network address translation)

2022-07-05 04:11:00 【A very lazy person】

This article mainly introduces the following aspects of knowledge ：

  1. Overview of network layer functions
  2. IP The datagram
  3. Network layer addressing （ Basic addressing form 、 Subnet partition & Subnet mask 、CIDR）
  4. Network address translation NAT
  5. ARP agreement
  6. DCHP agreement
  7. ICMP agreement
  8. IPV6 Insert picture description here

1. Overview of network layer functions

2.IP The datagram

(1)TCP/IP Protocol stack

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(2)IP Datagram format

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(3)IP Example of datagram segmentation

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(4)IP Unit of datagram

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3. Network layer addressing

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(1)IP Address brief

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(2) Classified IP Address

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  • special IP Address
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  • private IP Address
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(3) Subnet partition and subnet mask
  • Subnet partition
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  • Subnet mask
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  • Subnet mask exercise
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  • Packet forwarding when using subnet
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(4) No classified address CIDR
  • No classified address CIDR
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  • Constitute a supernetwork
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  • longest-prefix matching
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4. Network address translation NAT

(1)NAT Router

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5.ARP agreement

(1)ARP Overview of the agreement

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(2)ARP Application of protocol in sending data
  • Send to this network
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  • Send to other networks
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  • Example
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6.DHCP agreement

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(1)DHCP Overview of the agreement

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7.ICMP agreement

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(1)ICMP Error report message
  • Five types
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  • ICMP Data format of error report message
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  • The situation that error report messages should not be sent
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(2)ICMP Inquiry message

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(3)ICMP Application of protocol

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8.IPV6

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(1)IPV6 Cause of occurrence

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(2)IPV6 Datagram format

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(3)IPV6 VS IPV4

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(4)IPV6 Address representation

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(5)IPV6 Basic data type

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(6)IPV6 Over to IPV4

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原网站

版权声明
本文为[A very lazy person]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/02/202202140701144662.html

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