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	<id>https://wiki.welard.com/index.php?action=history&amp;feed=atom&amp;title=Mtu</id>
	<title>Mtu - Історія редагувань</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.welard.com/index.php?action=history&amp;feed=atom&amp;title=Mtu"/>
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	<updated>2026-10-22T19:08:42Z</updated>
	<subtitle>Історія редагувань цієї сторінки в вікі</subtitle>
	<generator>MediaWiki 1.34.1</generator>
	<entry>
		<id>https://wiki.welard.com/index.php?title=Mtu&amp;diff=2080&amp;oldid=prev</id>
		<title>192.168.51.51 в 22:09, 11 жовтня 2011</title>
		<link rel="alternate" type="text/html" href="https://wiki.welard.com/index.php?title=Mtu&amp;diff=2080&amp;oldid=prev"/>
		<updated>2011-10-11T22:09:41Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;tr class=&quot;diff-title&quot; lang=&quot;uk&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Попередня версія&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Версія за 22:09, 11 жовтня 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l29&quot; &gt;Рядок 29:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Рядок 29:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[http://www.wandin.net/dotclear/index.php?post/2009/01/08/OpenVPN-MTU-Size OpenVPN-MTU-Size]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[http://www.wandin.net/dotclear/index.php?post/2009/01/08/OpenVPN-MTU-Size OpenVPN-MTU-Size]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[http://forum.ixbt.com/topic.cgi?id=14:49725 ixbt]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key wikidb-es_:diff::1.12:old-2079:rev-2080 --&gt;
&lt;/table&gt;</summary>
		<author><name>192.168.51.51</name></author>
		
	</entry>
	<entry>
		<id>https://wiki.welard.com/index.php?title=Mtu&amp;diff=2079&amp;oldid=prev</id>
		<title>192.168.51.51 в 22:07, 11 жовтня 2011</title>
		<link rel="alternate" type="text/html" href="https://wiki.welard.com/index.php?title=Mtu&amp;diff=2079&amp;oldid=prev"/>
		<updated>2011-10-11T22:07:32Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;uk&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Попередня версія&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Версія за 22:07, 11 жовтня 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l27&quot; &gt;Рядок 27:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Рядок 27:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Итого, MTU=1434-28=1406; MSS=MTU-40=1366&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Итого, MTU=1434-28=1406; MSS=MTU-40=1366&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[http://www.wandin.net/dotclear/index.php?post/2009/01/08/OpenVPN-MTU-Size OpenVPN-MTU-Size]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;

&lt;!-- diff cache key wikidb-es_:diff::1.12:old-2078:rev-2079 --&gt;
&lt;/table&gt;</summary>
		<author><name>192.168.51.51</name></author>
		
	</entry>
	<entry>
		<id>https://wiki.welard.com/index.php?title=Mtu&amp;diff=2078&amp;oldid=prev</id>
		<title>192.168.51.51: Created page with &quot;1. PPTP  PPTP это полезный_TCP -&gt; IP -&gt; PPP -&gt; GRE -&gt; IP -&gt; Ethernet Для Ethernet MTU=1500; заголовки IP -20 байт, заголовок GRE -4 байта...&quot;</title>
		<link rel="alternate" type="text/html" href="https://wiki.welard.com/index.php?title=Mtu&amp;diff=2078&amp;oldid=prev"/>
		<updated>2011-10-10T20:48:55Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;1. PPTP  PPTP это полезный_TCP -&amp;gt; IP -&amp;gt; PPP -&amp;gt; GRE -&amp;gt; IP -&amp;gt; Ethernet Для Ethernet MTU=1500; заголовки IP -20 байт, заголовок GRE -4 байта...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Нова сторінка&lt;/b&gt;&lt;/p&gt;&lt;div&gt;1. PPTP&lt;br /&gt;
&lt;br /&gt;
PPTP это полезный_TCP -&amp;gt; IP -&amp;gt; PPP -&amp;gt; GRE -&amp;gt; IP -&amp;gt; Ethernet&lt;br /&gt;
Для Ethernet MTU=1500; заголовки IP -20 байт, заголовок GRE -4 байта, заголовок PPP -2 байта.&lt;br /&gt;
&lt;br /&gt;
Итого, MTU=1500-20-4-2=1474; MSS=MTU-40=1434&lt;br /&gt;
&lt;br /&gt;
2. Незашифрованный L2TP поверх IP&lt;br /&gt;
&lt;br /&gt;
L2TP это полезный_TCP -&amp;gt; IP -&amp;gt; PPP -&amp;gt; L2TP -&amp;gt; UDP -&amp;gt; IP -&amp;gt; Ethernet&lt;br /&gt;
Для Ethernet MTU=1500; заголовки IP -20 байт, заголовки UDP -8 байт, заголовки L2TP -16 байт, заголовок PPP -2 байта.&lt;br /&gt;
&lt;br /&gt;
Итого, MTU=1500-20-8-16-2=1454; MSS=MTU-40=1414&lt;br /&gt;
&lt;br /&gt;
3. L2TP поверх IPSEC&lt;br /&gt;
&lt;br /&gt;
L2TP поверх IPSEC это полезный_TCP -&amp;gt; IP -&amp;gt; PPP -&amp;gt; L2TP -&amp;gt; UDP -&amp;gt; ESP -&amp;gt; IP -&amp;gt; Ethernet&lt;br /&gt;
Получается то же самое, что и пункт 2, за вычетом размера заголовков ESP -20 байт.&lt;br /&gt;
&lt;br /&gt;
Итого, MTU=1454-20=1434; MSS=MTU-40=1394&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
4. L2TP поверх IPSEC с NAT-Traversal&lt;br /&gt;
Это полезный_TCP -&amp;gt; IP -&amp;gt; PPP -&amp;gt; L2TP -&amp;gt; UDP -&amp;gt; ESP -&amp;gt; IP -&amp;gt; UDP -&amp;gt; IP -&amp;gt; Ethernet&lt;br /&gt;
&lt;br /&gt;
Получается то же самое, что и пункт 3, за вычетом размера заголовков UDP -8 байт и IP -20 байт.&lt;br /&gt;
&lt;br /&gt;
Итого, MTU=1434-28=1406; MSS=MTU-40=1366&lt;/div&gt;</summary>
		<author><name>192.168.51.51</name></author>
		
	</entry>
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