IEEE 802.17a-2004：MAC桥接标准，扩展本地与城域网络连接

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IEEE Std 802.17a-2004 是一项重要的局域网（LAN）标准，它作为 IEEE 802.1D-2004 的补充修订版，专注于媒体访问控制（Media Access Control, MAC）桥接技术在本地和广域网络（Local and Metropolitan Area Networks, LANs/MANs）的应用。这个标准由 IEEE 的 LAN/MAN 标准委员会赞助，于 2004 年 10 月 29 日发布，旨在规范在不同规模网络间的通信桥接。 IEEE Std 802.17a 主要关注的是 MAC 桥接功能，即在一个网络中，如何通过桥梁设备将不同的 IEEE 802.17 网络连接起来，以便实现数据的透明传输。这种桥接对于构建大型、异构的网络架构至关重要，能够促进局域网和广域网之间的无缝协作，支持多类型设备和协议的互操作性。该标准定义了桥梁设备的角色、行为规范以及与 IEEE 802.17 网络的交互方式，包括但不限于：数据帧的转发策略、桥接控制信息的处理、链路状态管理和故障检测机制。此外，它还可能涉及服务质量（Quality of Service, QoS）的保证，确保关键业务数据的优先级和性能。 IEEE Std 802.17a-2004 的版权归属于 Institute of Electrical and Electronics Engineers (IEEE)，并且强调了复制或电子检索该标准内容必须得到出版商的书面许可。印刷版和 PDF 版本分别拥有不同的 ISBN 号码，便于用户获取和验证标准的权威性。 IEEE Std 802.17a-2004 是一个关键的技术文档，对于网络设计者、管理员和开发人员来说，理解和遵循这一标准有助于创建稳定、高效且可扩展的混合网络环境。它提供了一个统一的框架，确保不同规模的局域网能够在不影响性能的情况下协同工作，是现代网络架构中不可或缺的一部分。

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