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<p class=MsoNormal align=center style='text-align:center'><b style='mso-bidi-font-weight:
normal'><span lang=EN-US style='font-size:14.0pt;mso-fareast-language:JA'>VLAN</span></b><b
style='mso-bidi-font-weight:normal'><span lang=JA style='font-size:14.0pt;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-fareast-language:JA'>的汇聚链接</span></b><b style='mso-bidi-font-weight:
normal'><span lang=EN-US style='font-size:14.0pt;mso-fareast-language:JA'><o:p></o:p></span></b></p>
<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
style='font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";color:red'>需要设置跨越多台交换机的</span></b><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='font-size:12.0pt;
color:red'>VLAN</span></b><b style='mso-bidi-font-weight:normal'><span
style='font-size:12.0pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";color:red'>时……</span></b><b
style='mso-bidi-font-weight:normal'><span lang=EN-US style='font-size:12.0pt;
color:red'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='mso-bidi-font-size:10.5pt;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>到此为止，我们学习的都是使用单台交换机设置</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>VLAN</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>时的情况。那么，如果需要设置跨越多台交换机的</span><span lang=EN-US
style='mso-bidi-font-size:10.5pt'>VLAN</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>时又如何呢？</span><span lang=EN-US style='mso-bidi-font-size:
10.5pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='mso-bidi-font-size:10.5pt;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>在规划企业<span
class=GramE>级网络</span>时，很有可能会遇到隶属于同一部门的用户分散在同一座建筑物中的<span class=GramE>不</span>同楼层的情况，这时可能就需要考虑到如何跨越多台交换机设置</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>VLAN</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>的问题了。假设有如下图所示的网络，且需要将<span class=GramE>不</span>同楼层的</span><span
lang=EN-US style='mso-bidi-font-size:10.5pt'>A</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
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style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>和</span><span lang=EN-US
style='mso-bidi-font-size:10.5pt'>B</span><span style='mso-bidi-font-size:10.5pt;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>、</span><span lang=EN-US style='mso-bidi-font-size:10.5pt'>D</span><span
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>设置为同一个</span><span lang=EN-US
style='mso-bidi-font-size:10.5pt'>VLAN</span><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
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<p class=MsoNormal><b style='mso-bidi-font-weight:normal'><span
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