V2EX autonegotiation

Autonegotiation

定义 Definition

autonegotiation(自动协商):在以太网等网络通信中,设备两端在建立链路时自动交换能力信息(如速率、双工模式等),并选择双方都支持的最佳共同配置的机制。常见于以太网物理层(PHY)链路建立过程。

发音 Pronunciation (IPA)

/tonoien/

例句 Examples

The switch supports autonegotiation.
这台交换机支持自动协商。

If autonegotiation fails, the link may come up at the wrong speed or duplex, causing intermittent packet loss and poor performance.
如果自动协商失败,链路可能以错误的速率或双工模式建立,导致间歇性丢包和性能下降。

词源 Etymology

由 **auto-**(“自动的”)+ negotiation(“协商、谈判”)构成。该词在计算机网络语境中引申为“设备之间自动协商参数”,尤其与以太网链路建立与能力匹配相关。

相关词 Related Words

文献与作品 Literary/Notable Works

  • **IEEE Std 802.3 (Ethernet)**:以太网标准中对自动协商机制有规范性描述。
  • RFC 3636 Managed Objects for Ethernet-like Interface Types:在以太网接口管理对象(MIB)中涉及自动协商相关状态与配置。
  • 《Ethernet: The Definitive Guide》(Charles E. Spurgeon 等):以太网实践与原理书籍中常讨论自动协商与双工/速率匹配问题。
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