V2EX ipv4

IPv4

定义 Definition

IPv4(Internet Protocol version 4,互联网协议第4版)是一种用于在互联网中标识设备并进行数据路由的网络层协议,使用 32位地址(常见写法如 192.168.0.1)。它仍被广泛使用,但因地址数量有限而逐步被 IPv6 补充与替代。

发音 Pronunciation (IPA)

/a pi vi fr/

例句 Examples

IPv4 addresses are running out in many regions.
许多地区的 IPv4 地址正在耗尽。

Although the company has deployed IPv6, many legacy systems still rely on IPv4 for compatibility.
尽管公司已经部署了 IPv6,许多旧系统仍因兼容性需要依赖 IPv4。

词源 Etymology

IPv4 是 “Internet Protocol Version 4” 的缩写,意为“互联网协议第4版”。它在互联网早期标准化过程中成为主流网络层协议,并在 IETF 的 RFC 文档中正式规范(经典规范为 RFC 791)。由于 32 位地址空间有限,后来出现 IPv6 作为扩展。

相关词 Related Words

典型著作 Notable Works

  • RFC 791: Internet Protocol(IPv4 的核心规范文档)
  • TCP/IP Illustrated, Volume 1(W. Richard Stevens,讲解 IPv4/TCP/IP 的经典教材)
  • Computer Networking: A Top-Down Approach(Kurose & Ross,常以 IPv4 作为网络层教学案例)
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