40923225 cp2020

  • Home
    • Site Map
    • reveal
    • blog
  • Homework1(作業1)
    • PCH10.Networking Hardware(網路硬件)
      • Network Devices(網路設備)
      • Install a Network Adaper(安裝網路適配器)
    • PCH13.IPv4 and IPv6 Addresses(IPv4和IPv6的地址)
      • IPv4 and IPv6 Addresses(IPv4和IPv6的地址)
      • IPv4 Addressing(IPv4編址)
      • IPv4 Address Classes(IPv4網址類別)
      • Assigning an IP Address(分配IP網址)
      • IPv6
      • Classful Vs. Classless Addressing.Subnet and CIDR(相對於無類尋址.子網和CIDR)
      • Windows Networking(Windows網絡)
  • W8 cp2020
  • Homework2(作業2)
    • 2-1(分組)
  • Homework3(作業3)
    • Check Primality Functions (檢查功能)11
    • Divisors(除數)4
    • File Overlap Solutions(文件重疊)23
PCH13.IPv4 and IPv6 Addresses(IPv4和IPv6的地址) << Previous Next >> IPv4 Addressing(IPv4編址)

IPv4 and IPv6 Addresses(IPv4和IPv6的地址)

Introduction(介紹)

英.In this lesson, we will discuss TCP/IP, and the two common types of Internet addressing: Internet protocol version 4 (IPv4) and Internet protocol version 6 (IPv6). We will discuss IPv4 in depth differences between IPv4 and IPv6, and the reason we are moving toward IPv6 in the future.

中.在本課程中，我們將討論TCP / IP以及Internet尋址的兩種常見類型：Internet協議版本4（IPv4）和Internet協議版本6（IPv6）。 我們將深入討論IPv4與IPv6之間的差異，以及將來我們轉向IPv6的原因。

TCP/IP
英.Computer networks — including the Internet, which is the largest computer network — use Transmission Control Protocol/Internet Protocol or TCP/IP for network communications both internally on a LAN/WAN and externally to the Internet.
TCP/IP provides end-to-end connectivity of data. TCP/IP specifies how data should be grouped, addressed, transmitted, routed, and received at the destination address.
In addition ensuring connectivity, some of the basic characteristics of the IP protocol ensure that datagrams are routed to the correct destination using a binary addressing scheme.
中.計算機網絡（包括作為最大計算機網絡的Internet）使用傳輸控制協議/ Internet協議或TCP / IP進行內部LAN / WAN上和外部Internet的網絡通信。
TCP / IP提供數據的端到端連接。 TCP / IP指定如何在目標地址處對數據進行分組，尋址，傳輸，路由和接收。
除了確保連接性之外，IP協議的一些基本特徵還可以確保使用二進制尋址方案將數據報路由到正確的目的地。
IPv4 and IPv6 Addresses
英.Network devices require a logical address — either an IPv4 or IPv6 address . when moving data from one network segment to another. As we discussed in previous modules, switches make their intelligent switching decisions.The MAC address, also known as the physical address, is the unique identifier hard coded on a network interface card by the manufacturer. Switches use these MAC addresses to identify which devices are on which switch ports, and forward traffic within the network segment to the correct ports based on these addresses. When data traffic needs to cross the boundaries of the network, it requires a logical address that the router can use to make intelligent routing decisions. In most modern networks, this is done by using TCP/IP addressing. Historically, other protocols existed, such as internetwork packet exchange/sequenced packet exchange (IPX/SPX) for Novell networks, AppleTalk, and NetBEUI for Microsoft networks.
While the majority of our networks today still use IPv4, many networks are migrating to the newer IPv6 addressing standards. Additionally, many networks are offering dual support to both IPv4 and IPv6 during the transition. The reason for this transition is that we were running out of valid IPv4 addresses. IPv4 uses a 32-bit addressing scheme, providing only 4.2 billion available addresses, but IPv6 uses a 128-bit addressing scheme. IPv6 allows for 2128addresses, or 340,282,366,920,938,000,000,000,000,000,000,000,000unique IP addresses. IPv6 allows for more IP addresses than humanity could ever utilize.
中.網絡設備需要邏輯地址-IPv4或IPv6地址。將數據從一個網段移動到另一網段時。正如我們在前面的模塊中討論的那樣，交換機可以做出明智的交換決策.MAC地址（也稱為物理地址）是製造商在網絡接口卡上硬編碼的唯一標識符。交換機使用這些MAC地址來識別哪些設備在哪個交換機端口上，並根據這些地址將網段內的流量轉發到正確的端口。當數據流量需要跨越網絡邊界時，它需要路由器可以用來做出智能路由決策的邏輯地址。在大多數現代網絡中，這是通過使用TCP / IP尋址完成的。從歷史上看，存在其他協議，例如用於Novell網絡的互聯網絡數據包交換/排序數據包交換（IPX / SPX），用於Microsoft網絡的AppleTalk和NetBEUI。
儘管當今我們的大多數網絡仍使用IPv4，但許多網絡正在遷移到更新的IPv6尋址標準。此外，在過渡期間，許多網絡都對IPv4和IPv6提供雙重支持。進行此轉換的原因是我們用盡了有效的IPv4地址。 IPv4使用32位尋址方案，僅提供42億個可用地址，而IPv6使用128位尋址方案。 IPv6允許2128個地址或340,282,366,920,938,000,000,000,000,000,000,000,000,000,000個唯一IP地址。 IPv6所允許的IP地址比人類所能利用的更多。

PCH13.IPv4 and IPv6 Addresses(IPv4和IPv6的地址) << Previous Next >> IPv4 Addressing(IPv4編址)

Copyright © All rights reserved | This template is made with by Colorlib