V2EX bridge id

Bridge ID

释义 Definition

Bridge ID(桥接器标识符):在网络交换/桥接协议中用于唯一标识一台网桥(或交换机的桥接实体)的编号,常见于生成树协议(STP/RSTP)。它通常由桥优先级(bridge priority)MAC 地址(以及在某些场景下的扩展信息)组合而成,用来参与根桥(Root Bridge)的选举与拓扑计算。
(在不同技术语境里也可能泛指“桥的ID/桥接ID”,但最常见用法来自 STP。)

发音 Pronunciation (IPA)

/brd adi/

例句 Examples

The switch with the lowest bridge ID becomes the root bridge.
桥接器标识符最低的交换机会成为根桥。

During troubleshooting, we compared the bridge IDs to confirm which device was elected as the root and why the topology changed after a link failure.
排障时,我们对比了各设备的桥接器标识符,以确认哪台设备被选为根桥,以及为什么在链路故障后拓扑发生了变化。

词源 Etymology

bridge 原意为“桥”,在计算机网络中引申为“网桥/桥接设备”;IDidentification(识别、标识)的缩写。合起来 Bridge ID 即“用于识别网桥的编号”。

相关词 Related Words

文献与作品 Literary / Notable Works

  • IEEE 802.1D(以太网桥接标准,定义并使用 Bridge Identifier/Bridge ID 概念)
  • Radia Perlman, Interconnections: Bridges, Routers, Switches, and Internetworking Protocols(讨论生成树与桥标识等桥接核心概念)
  • Cisco 相关官方文档与配置指南(常在 STP 章节中讲解 Bridge ID 与根桥选举)
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