<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>L2 on 技术笔记</title><link>https://deguiliu.github.io/tech-notes/tags/l2/</link><description>Recent content in L2 on 技术笔记</description><generator>Hugo -- 0.168.0</generator><language>zh-cn</language><lastBuildDate>Mon, 19 Oct 2026 04:30:00 +0000</lastBuildDate><atom:link href="https://deguiliu.github.io/tech-notes/tags/l2/index.xml" rel="self" type="application/rss+xml"/><item><title>PTP 传输模式怎么选: 单播、gPTP 与以太网直传</title><link>https://deguiliu.github.io/tech-notes/posts/performance/ptp_transport_modes/</link><pubDate>Mon, 19 Oct 2026 04:30:00 +0000</pubDate><guid>https://deguiliu.github.io/tech-notes/posts/performance/ptp_transport_modes/</guid><description>把单播、gPTP 和以太网直传拆成寻址、承载和 profile 三个维度，解释 PTP over Ethernet 与常说的 L2 是什么关系，并给出选型顺序、配置要点和四个实测场景的边界。</description></item></channel></rss>