<html xmlns:v="urn:schemas-microsoft-com:vml"
xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:w="urn:schemas-microsoft-com:office:word"
xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=gb2312">
<meta name=ProgId content=Word.Document>
<meta name=Generator content="Microsoft Word 10">
<meta name=Originator content="Microsoft Word 10">
<link rel=File-List href="VLAN3.files/filelist.xml">
<link rel=Edit-Time-Data href="VLAN3.files/editdata.mso">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<title>网桥(数据帧过滤功能)</title>
<!--[if gte mso 9]><xml>
<o:DocumentProperties>
<o:Author>Cheng Yuan</o:Author>
<o:LastAuthor>Cheng Yuan</o:LastAuthor>
<o:Revision>2</o:Revision>
<o:TotalTime>118</o:TotalTime>
<o:Created>2003-11-19T19:55:00Z</o:Created>
<o:LastSaved>2003-11-19T19:55:00Z</o:LastSaved>
<o:Pages>1</o:Pages>
<o:Words>261</o:Words>
<o:Characters>1489</o:Characters>
<o:Company>Future</o:Company>
<o:Lines>12</o:Lines>
<o:Paragraphs>3</o:Paragraphs>
<o:CharactersWithSpaces>1747</o:CharactersWithSpaces>
<o:Version>10.3501</o:Version>
</o:DocumentProperties>
</xml><![endif]--><!--[if gte mso 9]><xml>
<w:WordDocument>
<w:SpellingState>Clean</w:SpellingState>
<w:GrammarState>Clean</w:GrammarState>
<w:PunctuationKerning/>
<w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing>
<w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery>
<w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery>
<w:Compatibility>
<w:SpaceForUL/>
<w:BalanceSingleByteDoubleByteWidth/>
<w:DoNotLeaveBackslashAlone/>
<w:ULTrailSpace/>
<w:DoNotExpandShiftReturn/>
<w:AdjustLineHeightInTable/>
<w:BreakWrappedTables/>
<w:SnapToGridInCell/>
<w:WrapTextWithPunct/>
<w:UseAsianBreakRules/>
<w:UseFELayout/>
</w:Compatibility>
<w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel>
</w:WordDocument>
</xml><![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;
mso-font-charset:2;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:0 268435456 0 0 -2147483648 0;}
@font-face
{font-family:宋体;
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-alt:SimSun;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
@font-face
{font-family:"\@宋体";
panose-1:2 1 6 0 3 1 1 1 1 1;
mso-font-charset:134;
mso-generic-font-family:auto;
mso-font-pitch:variable;
mso-font-signature:3 135135232 16 0 262145 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin:0cm;
margin-bottom:.0001pt;
text-align:justify;
text-justify:inter-ideograph;
mso-pagination:none;
font-size:10.5pt;
mso-bidi-font-size:12.0pt;
font-family:"Times New Roman";
mso-fareast-font-family:宋体;
mso-font-kerning:1.0pt;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;
text-underline:single;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;
text-underline:single;}
p
{mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
mso-pagination:widow-orphan;
font-size:12.0pt;
font-family:宋体;
mso-bidi-font-family:宋体;}
span.GramE
{mso-style-name:"";
mso-gram-e:yes;}
/* Page Definitions */
@page
{mso-page-border-surround-header:no;
mso-page-border-surround-footer:no;}
@page Section1
{size:595.3pt 841.9pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;
mso-header-margin:36.0pt;
mso-footer-margin:36.0pt;
mso-paper-source:0;
layout-grid:15.6pt;}
div.Section1
{page:Section1;}
/* List Definitions */
@list l0
{mso-list-id:134566676;
mso-list-type:hybrid;
mso-list-template-ids:-236920126 67698689 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:21.0pt;
mso-level-number-position:left;
margin-left:21.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l1
{mso-list-id:298807776;
mso-list-type:hybrid;
mso-list-template-ids:-453998920 67698689 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l1:level1
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:21.0pt;
mso-level-number-position:left;
margin-left:21.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l2
{mso-list-id:305092538;
mso-list-type:hybrid;
mso-list-template-ids:-1677010588 67698689 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l2:level1
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:21.0pt;
mso-level-number-position:left;
margin-left:21.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3
{mso-list-id:1540895179;
mso-list-template-ids:-453998920;}
@list l3:level1
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:21.0pt;
mso-level-number-position:left;
margin-left:21.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level2
{mso-level-number-format:bullet;
mso-level-text:\F06E;
mso-level-tab-stop:42.0pt;
mso-level-number-position:left;
margin-left:42.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level3
{mso-level-number-format:bullet;
mso-level-text:\F075;
mso-level-tab-stop:63.0pt;
mso-level-number-position:left;
margin-left:63.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level4
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:84.0pt;
mso-level-number-position:left;
margin-left:84.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level5
{mso-level-number-format:bullet;
mso-level-text:\F06E;
mso-level-tab-stop:105.0pt;
mso-level-number-position:left;
margin-left:105.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level6
{mso-level-number-format:bullet;
mso-level-text:\F075;
mso-level-tab-stop:126.0pt;
mso-level-number-position:left;
margin-left:126.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level7
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:147.0pt;
mso-level-number-position:left;
margin-left:147.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level8
{mso-level-number-format:bullet;
mso-level-text:\F06E;
mso-level-tab-stop:168.0pt;
mso-level-number-position:left;
margin-left:168.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l3:level9
{mso-level-number-format:bullet;
mso-level-text:\F075;
mso-level-tab-stop:189.0pt;
mso-level-number-position:left;
margin-left:189.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l4
{mso-list-id:1693997707;
mso-list-type:hybrid;
mso-list-template-ids:-1161378532 67698689 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l4:level1
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:21.0pt;
mso-level-number-position:left;
margin-left:21.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l5
{mso-list-id:1913546225;
mso-list-type:hybrid;
mso-list-template-ids:950287208 67698689 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l5:level1
{mso-level-number-format:bullet;
mso-level-text:\F06C;
mso-level-tab-stop:21.0pt;
mso-level-number-position:left;
margin-left:21.0pt;
text-indent:-21.0pt;
font-family:Wingdings;}
@list l6
{mso-list-id:1997030990;
mso-list-ty
vlan学习笔记
需积分: 0 48 浏览量
更新于2008-08-19
收藏 334KB RAR 举报
VLAN(Virtual Local Area Network,虚拟局域网)是网络技术中的一个重要概念,它通过将物理局域网划分成逻辑上的多个子网,实现了网络的隔离和管理优化。本资料旨在深入浅出地讲解VLAN的基本原理、配置方法以及实际应用。
我们要理解VLAN的作用。在传统的局域网中,所有连接在同一物理交换机上的设备都属于同一广播域,随着网络规模的扩大,广播流量会急剧增加,可能导致网络性能下降。VLAN的出现解决了这个问题,它将广播域进行了分割,限制了广播风暴,提高了网络效率。此外,VLAN还能加强网络安全,通过隔离不同部门或用户群,防止未授权的访问。
VLAN的实现主要有以下几种方式:
1. 基于端口的VLAN:这是最常见的配置方式,交换机的每个物理端口被分配到一个特定的VLAN,同一端口上的所有设备属于同一VLAN。
2. 基于MAC地址的VLAN:根据设备的MAC地址来划分VLAN,这种方式更灵活,但配置相对复杂。
3. 基于协议的VLAN:根据数据帧的协议类型(如IP、IPX等)划分VLAN,适用于多协议环境。
4. 基于策略的VLAN:结合多种因素(如端口、MAC、协议等)综合判断,灵活定义VLAN成员。
VLAN间的通信通常依赖于路由器或三层交换机。VLAN间路由有以下几种常见方法:
1. 单臂路由(Trunking):在一个物理接口上启用多个VLAN,通过路由器或三层交换机进行不同VLAN间的通信。
2. QinQ(802.1ad):在VLAN标签外再添加一层VLAN标签,扩展了VLAN的数量,使得不同服务提供商可以在同一物理链路上提供独立的VLAN服务。
3. VLAN间路由(Inter-VLAN Routing):通过三层交换机的路由功能,为每个VLAN配置单独的IP地址,实现VLAN间的通信。
配置VLAN时,我们需要了解基本命令,例如在Cisco设备上,创建VLAN的命令是`vlan ID`,将端口分配给VLAN的命令是`interface port-type switchport mode access`,设置端口为Trunk模式的命令是`interface port-type switchport mode trunk`。
在实际应用中,VLAN广泛用于企业网络、校园网、数据中心等场景。例如,企业可以为销售部、技术部、人事部等设置不同的VLAN,保证信息的安全性和私密性;在数据中心,VLAN可以提高资源利用率,简化管理。
VLAN是一种有效的网络管理工具,能够提升网络性能、增强安全性和简化管理。通过学习和掌握VLAN的相关知识,我们可以更好地设计和维护网络环境,满足不同场景的需求。这份“VLAN学习笔记”将是你深入了解和掌握VLAN的宝贵资料。
baizhuxiao
- 粉丝: 0
- 资源: 6
最新资源
- 员工培训计划表.docx
- 外聘师接待模板(工作人员用).docx
- 员工培训申请表.docx
- 外聘师资沟通表.docx
- 员工培训出勤统计表.docx
- 外聘师资接待模板(给老师).docx
- 新进员工岗前培训管理流程.docx
- 外出培训申请表.docx
- KPI指标分解多维度分析表(示例1).docx
- KPI指标分解多维度分析表(示例2).docx
- KPI绩效考核管理办法.docx
- KPI指标体系构建标准流程及图解.docx
- 岗位目标责任书(考核表版本,基于平衡记分卡).docx
- 部门工作总结表(可用于述职).docx
- KPI指标体系建立基本方法.docx
- 基于KPI的管理层绩效考核表(总监以上).docx