mirror of
https://github.com/gnu4cn/ccna60d.git
synced 2024-05-21 04:55:00 +08:00
Remove something.
This commit is contained in:
gnu4cn
parent
27b15ee074
commit
0e811c0ffd
1198
mindmaps/EIGRP.mm
1198
mindmaps/EIGRP.mm
File diff suppressed because one or more lines are too long
@ -1 +0,0 @@
|
||||
这些mindmaps是Freeplane的。所以要用[此软件](https://www.freeplane.org/wiki/index.php/Main_Page)来打开。
|
||||
@ -1,103 +0,0 @@
|
||||
<map version="freeplane 1.3.0">
|
||||
<!--To view this file, download free mind mapping software Freeplane from http://freeplane.sourceforge.net -->
|
||||
<node TEXT="RSTP" ID="ID_1723255651" CREATED="1283093380553" MODIFIED="1487727094558"><hook NAME="MapStyle">
|
||||
<properties show_note_icons="true"/>
|
||||
|
||||
<map_styles>
|
||||
<stylenode LOCALIZED_TEXT="styles.root_node">
|
||||
<stylenode LOCALIZED_TEXT="styles.predefined" POSITION="right">
|
||||
<stylenode LOCALIZED_TEXT="default" MAX_WIDTH="600" COLOR="#000000" STYLE="as_parent">
|
||||
<font NAME="SansSerif" SIZE="10" BOLD="false" ITALIC="false"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="defaultstyle.details"/>
|
||||
<stylenode LOCALIZED_TEXT="defaultstyle.note"/>
|
||||
<stylenode LOCALIZED_TEXT="defaultstyle.floating">
|
||||
<edge STYLE="hide_edge"/>
|
||||
<cloud COLOR="#f0f0f0" SHAPE="ROUND_RECT"/>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.user-defined" POSITION="right">
|
||||
<stylenode LOCALIZED_TEXT="styles.topic" COLOR="#18898b" STYLE="fork">
|
||||
<font NAME="Liberation Sans" SIZE="10" BOLD="true"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.subtopic" COLOR="#cc3300" STYLE="fork">
|
||||
<font NAME="Liberation Sans" SIZE="10" BOLD="true"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.subsubtopic" COLOR="#669900">
|
||||
<font NAME="Liberation Sans" SIZE="10" BOLD="true"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.important">
|
||||
<icon BUILTIN="yes"/>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.AutomaticLayout" POSITION="right">
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level.root" COLOR="#000000">
|
||||
<font SIZE="18"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,1" COLOR="#0033ff">
|
||||
<font SIZE="16"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,2" COLOR="#00b439">
|
||||
<font SIZE="14"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,3" COLOR="#990000">
|
||||
<font SIZE="12"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,4" COLOR="#111111">
|
||||
<font SIZE="10"/>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
</map_styles>
|
||||
</hook>
|
||||
<hook NAME="AutomaticEdgeColor" COUNTER="2"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">快速生成树协议（Rapid Spanning Tree Protocol, RSTP）, 显著地缩短了在某条链路失效时，STP用于收敛的时间。在RSTP下，网络从故障切换到一条替代路径或链路可在亚秒级别完成（with RSTP, network failover to an alternate path or link can occur in a subsecond timeframe）。RSTP是802.1D的一个扩展，执行与上行快速及骨干快速类似的功能。</font></span><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px"><strong style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b>RSTP比传统的STP执行得更好，且无需额外配置。此外，RSTP向后兼容最初的IEEE 802.1D STP标准。</b></strong><span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none">其通过使用一种如下面的截屏中所示的修改的BPDU，实现的向后兼容。</span></font>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
</richcontent>
|
||||
<node TEXT="IEEE规格" POSITION="right" ID="ID_363288489" CREATED="1487726726432" MODIFIED="1487726791723">
|
||||
<edge COLOR="#ff0000"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
802.1Ｗ，是802.1Ｄ的一个扩展。
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="RTSP with PVST+，RPVST+" POSITION="left" ID="ID_146033598" CREATED="1487727093064" MODIFIED="1487727360572">
|
||||
<edge COLOR="#0000ff"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">允许与PVST+ 一起使用802.1W（Rapid Per VLAN Spanning Tree Plus(RPVST+) allows for the use of 802.1W with PVST+）。</font></span> <strong http-equiv="content-type" content="text/html; charset=utf-8" style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">默认情况下，在某台思科交换机上开启RSTP时，也就在该交换机上开启了R-PVST+。</font></b></strong>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
</richcontent>
|
||||
</node>
|
||||
</node>
|
||||
</map>
|
||||
@ -1,718 +0,0 @@
|
||||
<map version="freeplane 1.3.0">
|
||||
<!--To view this file, download free mind mapping software Freeplane from http://freeplane.sourceforge.net -->
|
||||
<node TEXT="STP" ID="ID_1723255651" CREATED="1283093380553" MODIFIED="1487644896195" TEXT_SHORTENED="true"><hook NAME="MapStyle">
|
||||
<properties show_icon_for_attributes="true" show_note_icons="true"/>
|
||||
|
||||
<map_styles>
|
||||
<stylenode LOCALIZED_TEXT="styles.root_node">
|
||||
<stylenode LOCALIZED_TEXT="styles.predefined" POSITION="right">
|
||||
<stylenode LOCALIZED_TEXT="default" MAX_WIDTH="600" COLOR="#000000" STYLE="as_parent">
|
||||
<font NAME="SansSerif" SIZE="10" BOLD="false" ITALIC="false"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="defaultstyle.details"/>
|
||||
<stylenode LOCALIZED_TEXT="defaultstyle.note"/>
|
||||
<stylenode LOCALIZED_TEXT="defaultstyle.floating">
|
||||
<edge STYLE="hide_edge"/>
|
||||
<cloud COLOR="#f0f0f0" SHAPE="ROUND_RECT"/>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.user-defined" POSITION="right">
|
||||
<stylenode LOCALIZED_TEXT="styles.topic" COLOR="#18898b" STYLE="fork">
|
||||
<font NAME="Liberation Sans" SIZE="10" BOLD="true"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.subtopic" COLOR="#cc3300" STYLE="fork">
|
||||
<font NAME="Liberation Sans" SIZE="10" BOLD="true"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.subsubtopic" COLOR="#669900">
|
||||
<font NAME="Liberation Sans" SIZE="10" BOLD="true"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.important">
|
||||
<icon BUILTIN="yes"/>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="styles.AutomaticLayout" POSITION="right">
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level.root" COLOR="#000000">
|
||||
<font SIZE="18"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,1" COLOR="#0033ff">
|
||||
<font SIZE="16"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,2" COLOR="#00b439">
|
||||
<font SIZE="14"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,3" COLOR="#990000">
|
||||
<font SIZE="12"/>
|
||||
</stylenode>
|
||||
<stylenode LOCALIZED_TEXT="AutomaticLayout.level,4" COLOR="#111111">
|
||||
<font SIZE="10"/>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
</stylenode>
|
||||
</map_styles>
|
||||
</hook>
|
||||
<hook NAME="AutomaticEdgeColor" COUNTER="8"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
Spanning Tree Protocol,生成树协议
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<node TEXT="BPDU" POSITION="right" ID="ID_1398715153" CREATED="1487582872175" MODIFIED="1487642446011">
|
||||
<edge COLOR="#00ff00"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
Bridge Protocol DU, 桥协议数据单元。BPDUs会被打上VLAN ID标记
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_161614335" MIDDLE_LABEL="利用BPDUs的交换，来确定网络拓扑" STARTINCLINATION="61;0;" ENDINCLINATION="61;0;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
<node TEXT="间隔：2s" ID="ID_1833352132" CREATED="1487582937985" MODIFIED="1487582951229"/>
|
||||
<node TEXT="类型" ID="ID_938846571" CREATED="1487639792052" MODIFIED="1487639925835">
|
||||
<node TEXT="配置BPDUs" ID="ID_1186452463" CREATED="1487639820753" MODIFIED="1487639925835"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
STP Configuration BPDUs
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<node TEXT="数据帧构成" ID="ID_730597063" CREATED="1487582962344" MODIFIED="1487642446010">
|
||||
<node TEXT="交换机标识符" ID="ID_1575397629" CREATED="1487640590246" MODIFIED="1487646396286"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
由2字节的桥优先级与交换机唯一MAC地址构成,  <strong http-equiv="content-type" content="text/html; charset=utf-8" style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">在802.1D标准中，每个VLAN都需要一个唯一BID。</font></b></strong>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_1360788201" STARTINCLINATION="139;0;" ENDINCLINATION="139;0;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
<node TEXT="桥优先级" ID="ID_546931785" CREATED="1487645957315" MODIFIED="1487646431404"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<strong http-equiv="content-type" content="text/html; charset=utf-8" style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">桥优先级是该交换机相对于其它交换机的优先级。</font></b></strong><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px"><span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none">桥优先级取值范围是0到65535。思科Catalyst交换机的默认值为32768。</span></font>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="交换机唯一MAC地址" ID="ID_1751331951" CREATED="1487645973170" MODIFIED="1487646210017"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol">得自交换机背板或管理引擎的硬件地址（the hardware address derived from the switch backplane or supervisor engine， 又名为基底MAC地址，the base MAC address）。</font> 
|
||||
</p>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">大多数思科Catalyst交换机都有一个可用作VLANs的BIDs的、1024个MAC地址的地址池。这些MAC地址被顺序分配，也就是该范围中的第一个MAC地址分配给VLAN 1, 第二个给VLAN 2, 第三个给VLAN 3, 以致第四个第五个等等。这样就提供了支持标准范围VLANs的支持能力，但要支持扩展范围的VLANs，就需要更多的MAC地址。该问题在802.1t（802.1D的技术和编辑修正）标准中得以解决（this issue was resolved in the 802.1t(Technical and Editoral corrections for 802.1D) standard）。</font></span>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="端口地址" ID="ID_1290775397" CREATED="1487640637356" MODIFIED="1487640649432">
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_330467769" STARTINCLINATION="261;0;" ENDINCLINATION="261;0;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
</node>
|
||||
<node TEXT="端口到根节点的开销" ID="ID_972535079" CREATED="1487640676612" MODIFIED="1487640714885">
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_219407617" STARTINCLINATION="225;0;" ENDINCLINATION="225;0;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="确定最佳配置BPDUs的因素（依先后顺序）" ID="ID_1998995701" CREATED="1487642461986" MODIFIED="1487642505884">
|
||||
<node TEXT="有着最低的根桥ID的, lowest Root Bridge ID" ID="ID_1969907022" CREATED="1487642513093" MODIFIED="1487642522898"/>
|
||||
<node TEXT="有着到根桥最低根路径开销的，lowest Root path cost to Root Bridge" ID="ID_1328064099" CREATED="1487642527495" MODIFIED="1487642533749"/>
|
||||
<node TEXT="有着最低发送者桥ID的，lowest sender Bridge ID" ID="ID_532707811" CREATED="1487642538130" MODIFIED="1487642545351"/>
|
||||
<node TEXT="有着最低发送者端口ID的，lowest sender Port ID" ID="ID_999341556" CREATED="1487642549583" MODIFIED="1487642555914"/>
|
||||
</node>
|
||||
<node TEXT="特征" ID="ID_1906618282" CREATED="1487644443122" MODIFIED="1487644475558">
|
||||
<node TEXT="配置BPDUs是从根桥发出且通过指定端口发送的, a Configuration BPDU originates on the Root Bridge and is sent via the Designated Port" ID="ID_1211110842" CREATED="1487644455512" MODIFIED="1487644465938"/>
|
||||
<node TEXT="配置BPDUs是由非根桥的根端口上接收的，a Configuration BPDU is received by a Non-Root Bridge on a Root Port" ID="ID_611603836" CREATED="1487644470114" MODIFIED="1487644477899"/>
|
||||
<node TEXT="配置BPDU是由非根桥的指定端口上传送的，a Configuration BPDU is transmitted by a Non-Root Bridge on a Designated Port" ID="ID_117826523" CREATED="1487644481107" MODIFIED="1487644486542"/>
|
||||
<node TEXT="在所有单个LAN区段上，都只有一个指定端口（在某台指定交换机上），there is only one Designated Port (on a Designated Switch) on any single LAN segment" ID="ID_1699044216" CREATED="1487644491679" MODIFIED="1487644500035"/>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="拓扑变化通知BPDUs" ID="ID_785070455" CREATED="1487639851933" MODIFIED="1487639917210"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
STP Topology Change Notification BPDUs
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="IEEE规格" POSITION="left" ID="ID_756013575" CREATED="1487582758796" MODIFIED="1487646177356">
|
||||
<edge COLOR="#0000ff"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
802.1D -> 802.1t(<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">802.1D的技术和编辑修正</font></span> )
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="交换机端口状态（依序）" POSITION="right" ID="ID_621355622" CREATED="1487644625225" MODIFIED="1487644657056">
|
||||
<edge COLOR="#00007c"/>
|
||||
<node TEXT="阻塞中 -- 仅接收BPDUs（为期20s）， blocking -- BPDUs received only (20 seconds)" ID="ID_107170606" CREATED="1487644662370" MODIFIED="1487645012943"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<ul http-equiv="content-type" content="text/html; charset=utf-8" style="padding-left: 0; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<li>
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃在该端口上接收到的来自所连接网段的数据帧，discards frames received on the port from the attached segment
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃交换自另一端口的数据帧，discards frames switched from another port
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
不将工作站地址放入到其地址数据库中，does not incorporate station location into its address database
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收BPDUs并将这些BPDUs引导给系统模块，receives BPDUs and directs them to the system module
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
不传送自系统模块接收到的BPDUs，does not transmit BPDUs received from the system module
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收网络管理报文，并对这些报文进行响应，receives and responds to network management messages
|
||||
</p>
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="侦听中 -- 有BPDUs发出和接收（为期15s），listening -- BPDUs sent and received (15 seconds)" ID="ID_1054326285" CREATED="1487644676409" MODIFIED="1487645353586"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<ul http-equiv="content-type" content="text/html; charset=utf-8" style="padding-left: 0; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<li>
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃接收自所连接网段的帧, discards frames received from the attached segment
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃转发自另一端口的帧, discards frames switched from another port
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
不将工作站地址加入到其地址数据库，does not incorporate station location into its address database
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收BPDUs并将这些BPDUs引导给系统模块，receives BPDUs and directs them to the system module
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收、处理并传送接收自系统模块的BPDUs（在这一点上，与阻塞状态有所不同）, receives, processes, and transmits BPDUs received from the system module
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
对网络管理报文进行接收和响应，receives and responds to network management messages
|
||||
</p>
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="学习中 -- 桥接表被建立起来（为期15s），learning -- bridging table is built (15 seconds)" ID="ID_1176713406" CREATED="1487644689344" MODIFIED="1487645712524"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<ul http-equiv="content-type" content="text/html; charset=utf-8" style="padding-left: 0; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<li>
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃接收自所连接网段的帧, discards frames received from the attached segment
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃转发自另一端口的帧, discards frames switched from another port
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
将工作站地址包含（安装）到其地址数据库（这一点与侦听状态有所不同），incorporates(installs) station location into its address database
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收BPDUs并将这些BPDUs引导给系统模块，receives BPDUs and directs them to the system module
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收、处理并传送接收自系统模块的BPDUs, receives, processes, and transmits BPDUs received from the system module
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
对网络管理报文进行接收和响应，receives and responds to network management messages
|
||||
</p>
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="转发中 -- 发送/接收数据，forwarding -- sending/receiving data" ID="ID_1300430620" CREATED="1487644702242" MODIFIED="1487645828835"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<ul http-equiv="content-type" content="text/html; charset=utf-8" style="padding-left: 0; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<li>
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
转发接收自所连接网段的数据帧
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
转发交换自另一端口的数据帧（以上两点与学习状态不同，标志着开始转发数据）
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
将站点地址信息加入（安装）到其地址数据库
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收BPDUs并将这些BPDUs导向给系统模块
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
处理接收自系统模块的BPDUs
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收网络管理报文并对其进行响应
|
||||
</p>
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="关闭 -- 管理性关闭，disabled -- administratively down" ID="ID_1689751614" CREATED="1487644714860" MODIFIED="1487645847115"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p http-equiv="content-type" content="text/html; charset=utf-8" style="margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
关闭状态不是端口正常STP进展的部分。而是端口被网络管理员进行管理性关闭，或因为某种错误条件而被系统所关闭时，就被认为处于关闭状态。关闭的端口完成以下动作。
|
||||
</p>
|
||||
<ul style="padding-left: 0; margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<li>
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃接收自所连接网段的数据帧
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
丢弃转发自另一端口的数据帧
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
不将工作站地址加入其地址数据库
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
接收BPDUs但不将这些BPDUs导向给系统模块
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
不接收来自系统模块的BPDUs
|
||||
</p>
|
||||
</li>
|
||||
<li style="margin-top: 0">
|
||||
<p style="margin-top: 16px; margin-bottom: 16px">
|
||||
对网络管理报文进行接收和响应
|
||||
</p>
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="交换机角色" POSITION="left" ID="ID_152612304" CREATED="1487642618368" MODIFIED="1487642627679">
|
||||
<edge COLOR="#7c0000"/>
|
||||
<node TEXT="根交换机（根桥，Root Switch/Bridge）" ID="ID_945607110" CREATED="1487642634817" MODIFIED="1487648643321">
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_617399584" STARTINCLINATION="402;352;" ENDINCLINATION="12;125;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
</node>
|
||||
<node TEXT="指定交换机(Designated Switch)" ID="ID_1261551971" CREATED="1487642651009" MODIFIED="1487648320455"/>
|
||||
</node>
|
||||
<node TEXT="作用" POSITION="right" ID="ID_1259001063" CREATED="1487582630594" MODIFIED="1487641683693" HGAP="0" VSHIFT="-130">
|
||||
<edge COLOR="#ff0000"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
在具备冗余的交换网络拓扑中，允许存在多条物理链路的同时, 通过建立一个无循环逻辑拓扑，阻止网络上循环的发生
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="原理" POSITION="left" ID="ID_1061403770" CREATED="1487636579645" MODIFIED="1487636631259">
|
||||
<edge COLOR="#ff00ff"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">利用BPDUs的交换，来确定网络拓扑。</font></span>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="思科对STP（IEEE 802.1D标准）的特性增强" POSITION="right" ID="ID_1472068789" CREATED="1487672220495" MODIFIED="1487672528667">
|
||||
<edge COLOR="#00ffff"/>
|
||||
<hook NAME="FirstGroupNode"/>
|
||||
<node TEXT="Port Fast" ID="ID_169772637" CREATED="1487672305880" MODIFIED="1487672694073">
|
||||
<hook NAME="FirstGroupNode"/>
|
||||
</node>
|
||||
<node TEXT="BPDU Guard" ID="ID_1158526242" CREATED="1487672319903" MODIFIED="1487672331691"/>
|
||||
<node TEXT="都是针对连接主机/工作站的交换机端口，前者可快速开启数据转发，后者可确保前者不出问题" ID="ID_1397483274" CREATED="1487672694071" MODIFIED="1487672698251">
|
||||
<hook NAME="SummaryNode"/>
|
||||
</node>
|
||||
<node TEXT="BPDU Filter" ID="ID_1317679771" CREATED="1487672656416" MODIFIED="1487674342587"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">有效地在选定端口上，通过阻止这些端口发送或接收所有BPDUs，而关闭这些端口的STP。<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none">而在全局配置了BPDU过滤器，并与全局端口快速配合使用是，它会将任何接收到BPDUs的端口，还原成端口快速模式。</span></font>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="Loop Guard" ID="ID_734598049" CREATED="1487672722620" MODIFIED="1487672728646"/>
|
||||
<node TEXT="Root Guard" ID="ID_1376635338" CREATED="1487672741186" MODIFIED="1487672745744"/>
|
||||
<node TEXT="Uplink Fast" ID="ID_527733180" CREATED="1487672753295" MODIFIED="1487672760348"/>
|
||||
<node TEXT="Backbone Fast" ID="ID_772829206" CREATED="1487672769921" MODIFIED="1487672775943"/>
|
||||
</node>
|
||||
<node TEXT="根桥的选举" POSITION="right" ID="ID_725420533" CREATED="1487646718094" MODIFIED="1487647935924">
|
||||
<edge COLOR="#7c7c00"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<strong http-equiv="content-type" content="text/html; charset=utf-8" style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">网络中有着最低桥ID的交换机就被选举为STP根桥</font></b></strong><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol">(the STP Root Bridge)。如有两台或更多交换机有着相同的优先级，则选取有着最低顺序MAC地址的交换机作为根桥。 </font>
|
||||
</p>
|
||||
<p>
|
||||
|
||||
</p>
|
||||
<p http-equiv="content-type" content="text/html; charset=utf-8" style="margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<strong style="font-weight: 600"><b>思科IOS软件允许管理员对根桥选举施加影响。</b></strong>此外，管理员<strong style="font-weight: 600"><b>也可以配置一台备份根桥</b></strong>（adminitrator can also configure a backup Root Bridge）。备份根桥是一台管理员优先选择、在当前根桥失效或从网络中移除时成为根桥的交换机。
|
||||
</p>
|
||||
<p style="margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<strong style="font-weight: 600"><b>为生成树域配置一台备份根桥交换机，始终是好的做法。</b></strong>这样做允许在根桥失效时，网络具有确定性。最常见的做法就是在根桥上配置最高的优先级（也就是优先级为最低数值），并将第二高的优先级配置在当前根桥失效时作为根桥的备份交换机上。下图31.5对此进行了演示。
|
||||
</p>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">使用宏命令</font></span><code style="font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace; font-size: 13.6px; padding-top: 0; padding-bottom: 0; padding-right: 0px; padding-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(51, 51, 51); font-style: normal; font-weight: normal; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px"><font face="SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace" size="13.6px" color="rgb(51, 51, 51)">primary</font></code><span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">或</font></span><code style="font-family: SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace; font-size: 13.6px; padding-top: 0; padding-bottom: 0; padding-right: 0px; padding-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; color: rgb(51, 51, 51); font-style: normal; font-weight: normal; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px"><font face="SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace" size="13.6px" color="rgb(51, 51, 51)">secondary</font></code><span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">将其设置为根桥</font></span>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="相关计时器（timers）" POSITION="left" ID="ID_505904374" CREATED="1487644750597" MODIFIED="1487644883661">
|
||||
<edge COLOR="#007c00"/>
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_1069253556" STARTINCLINATION="40;0;" ENDINCLINATION="40;0;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
<node TEXT="Hello计时器 -- 2s（每个配置BPDU直接的时间）" ID="ID_973136282" CREATED="1487644776345" MODIFIED="1487644782933"/>
|
||||
<node TEXT="转发延迟计数器 -- 15s（侦听/控制学习状态的为期），Forward Delay -- 15 seconds (controls durations of Listening/Learning states)" ID="ID_1695623469" CREATED="1487644786779" MODIFIED="1487644793637"/>
|
||||
<node TEXT="最大存活时间 -- 20s（控制阻塞状态的为期），Max Age -- 20 seconds (controls the duration of the Blocking state)" ID="ID_1150703014" CREATED="1487644800713" MODIFIED="1487644808930"/>
|
||||
</node>
|
||||
<node TEXT="端口角色" POSITION="right" ID="ID_431259203" CREATED="1487648199373" MODIFIED="1487649158263">
|
||||
<edge COLOR="#ff0000"/>
|
||||
<node TEXT="根端口（Root Port）" ID="ID_1529806686" CREATED="1487642715920" MODIFIED="1487648851722">
|
||||
<hook NAME="FirstGroupNode"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">生成树</font></span><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px"><strong style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b>根端口是在该设备将数据包转发到根桥时，提供出最优路径，或最低开销的端口。</b></strong><span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none">也就是说，根端口是接收到该交换机的最优BPDU的端口，而这又表明了在路径开销上其是到根桥的最短路径。根端口是基于根桥路径开销选举出的。</span></font>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<arrowlink SHAPE="CUBIC_CURVE" COLOR="#000000" WIDTH="2" TRANSPARENCY="80" FONT_SIZE="9" FONT_FAMILY="SansSerif" DESTINATION="ID_945607110" STARTINCLINATION="-161;54;" ENDINCLINATION="189;325;" STARTARROW="NONE" ENDARROW="DEFAULT"/>
|
||||
</node>
|
||||
<node TEXT="指定端口(Designated Port)" ID="ID_617399584" CREATED="1487642725273" MODIFIED="1487648979764"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">与根端口不同，指定端口是指向与STP根相反方向的端口。该端口是指定设备（交换机）连接LAN的端口。指定端口同时也是在将来自LAN的数据包转发给根桥时有着最低路径开销的端口。</font></span>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="两种用于转发BPDUs的端口" ID="ID_214327509" CREATED="1487648737854" MODIFIED="1487648763951">
|
||||
<hook NAME="SummaryNode"/>
|
||||
</node>
|
||||
<node TEXT="关闭的端口（Disabled Port, 管理员手动关闭的端口）" ID="ID_1835877793" CREATED="1487647348423" MODIFIED="1487647388643"/>
|
||||
<node TEXT="非指定端口（the Non-Designated Port）" ID="ID_500435338" CREATED="1487649156658" MODIFIED="1487671879495"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">不是一种生成树端口类型。而是其作为一个术语，只是简单地表示某个不作为某LAN网段上指定端口的端口。</font></span><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px"><strong style="font-weight: 600; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255)"><b>非指定端口将始终被STP置为阻塞状态。</b></strong></font>
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<hook NAME="SummaryNode"/>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="网络拓扑" POSITION="right" ID="ID_161614335" CREATED="1487636636477" MODIFIED="1487639720082">
|
||||
<edge COLOR="#00ffff"/>
|
||||
<richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
Network Topology
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
<node TEXT="决定网络拓扑的三个变量" ID="ID_134485367" CREATED="1487636659832" MODIFIED="1487636679111">
|
||||
<node TEXT="交换机标识符" ID="ID_1360788201" CREATED="1487636688346" MODIFIED="1487636783280"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
交换机的唯一MAC地址
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="各个交换机端口到根桥的路径开销" ID="ID_219407617" CREATED="1487636713631" MODIFIED="1487636983530"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<span http-equiv="content-type" content="text/html; charset=utf-8" style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; background-color: rgb(255, 255, 255); display: inline !important; float: none"><font color="rgb(51, 51, 51)" face="-apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol" size="16px">802.1D规格分配16位（短整数）基于端口带宽的默认端口开销值给每个端口。因为管理员同时有着手动分配端口开销值（1和65535之间）的能力，所以该16位值就只用在那些未有具体配置了端口开销的端口。</font></span>
|
||||
</p>
|
||||
<p>
|
||||
|
||||
</p>
|
||||
<p http-equiv="content-type" content="text/html; charset=utf-8" style="margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
下表列出了在应用短整数方式计算端口开销时各种类型端口的默认值。
|
||||
</p>
|
||||
<p style="margin-top: 0px; margin-bottom: 16px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<em>表 -- 默认STP端口开销值</em>
|
||||
</p>
|
||||
<table style="border-spacing: 0px; margin-top: 0px; margin-bottom: 16px; display: block; width: 888px; color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol; font-size: 16px; font-style: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px">
|
||||
<tr style="background-color: rgb(255, 255, 255)">
|
||||
<th style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px; font-weight: 600">
|
||||
带宽
|
||||
</th>
|
||||
<th style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px; font-weight: 600">
|
||||
默认端口开销
|
||||
</th>
|
||||
</tr>
|
||||
<tr style="background-color: rgb(248, 248, 248)">
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
4Mbps
|
||||
</td>
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
250
|
||||
</td>
|
||||
</tr>
|
||||
<tr style="background-color: rgb(255, 255, 255)">
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
10Mbps
|
||||
</td>
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
100
|
||||
</td>
|
||||
</tr>
|
||||
<tr style="background-color: rgb(248, 248, 248)">
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
16Mbps
|
||||
</td>
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
62
|
||||
</td>
|
||||
</tr>
|
||||
<tr style="background-color: rgb(255, 255, 255)">
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
100Mbps
|
||||
</td>
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
19
|
||||
</td>
|
||||
</tr>
|
||||
<tr style="background-color: rgb(248, 248, 248)">
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
1Gbps
|
||||
</td>
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
4
|
||||
</td>
|
||||
</tr>
|
||||
<tr style="background-color: rgb(255, 255, 255)">
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
10Gbps
|
||||
</td>
|
||||
<td style="padding-top: 6px; padding-bottom: 6px; padding-right: 13px; padding-left: 13px">
|
||||
2
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
<node TEXT="各个交换机端口的端口识别符" ID="ID_330467769" CREATED="1487636744584" MODIFIED="1487639025412"><richcontent TYPE="NOTE">
|
||||
|
||||
<html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
该端口的MAC地址
|
||||
</p>
|
||||
</body>
|
||||
</html>
|
||||
</richcontent>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node TEXT="默认收敛时间为30到50s" POSITION="left" ID="ID_1069253556" CREATED="1487644856668" MODIFIED="1487644879706">
|
||||
<edge COLOR="#007c7c"/>
|
||||
</node>
|
||||
<node TEXT="华为STP保护功能" POSITION="left" ID="ID_816700423" CREATED="1487674643647" MODIFIED="1487674729959">
|
||||
<edge COLOR="#7c0000"/>
|
||||
<node TEXT="BPDU保护功能" ID="ID_1288132806" CREATED="1487674665038" MODIFIED="1487674675976"/>
|
||||
<node TEXT="TC(Topology Change, 拓扑变化)保护功能" ID="ID_1335513425" CREATED="1487674680496" MODIFIED="1487674707899"/>
|
||||
<node TEXT="Root保护功能" ID="ID_1751947780" CREATED="1487674714657" MODIFIED="1487674724293"/>
|
||||
<node TEXT="环路保护功能" ID="ID_1375486240" CREATED="1487674728559" MODIFIED="1487674736704"/>
|
||||
</node>
|
||||
<node TEXT="端口选举" POSITION="right" ID="ID_153450653" CREATED="1487726275913" MODIFIED="1487726286480">
|
||||
<edge COLOR="#00007c"/>
|
||||
<node TEXT="根端口的选举，与指定端口的选举是分开的，先后进行" ID="ID_1323311732" CREATED="1487672154796" MODIFIED="1487726289744"/>
|
||||
<node TEXT="根端口选举，基于交换机上端口比较（到根桥开销）" ID="ID_1448386483" CREATED="1487726294341" MODIFIED="1487726357289"/>
|
||||
<node TEXT="指定端口选举，基于网段上端口比较（到根桥的开销）" ID="ID_1923606824" CREATED="1487726316065" MODIFIED="1487726343717"/>
|
||||
</node>
|
||||
</node>
|
||||
</map>
|
||||
Loading…
Reference in New Issue
Block a user