sddylxl 发表于 2011-9-22 09:09:00

[求助]华为2318划分VLAN后不能通信,请给看看问题在哪里?

<span class="Apple-style-span" style="WORD-SPACING: 0px; FONT: medium="medium"Simsun; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate; orphans: 2; widows: 2; webkit-border-horizontal-spacing: 0px; webkit-border-vertical-spacing: 0px; webkit-text-decorations-in-effect: none; webkit-text-size-adjust: auto; webkit-text-stroke-width: 0px"><span class="Apple-style-span" style="FONT-SIZE: 12px; COLOR: rgb(0,51,102); FONT-FAMILY: 宋体, 'Arial Black'; TEXT-ALIGN: left"><span class="t_title1" style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-WEIGHT: bold; FONT-SIZE: 14px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 22px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none">关于交换机划分VLAN 的问题,请您指点一下,谢谢。</span><br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/><br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>
<div class="t_msgfont1" id="message335815151" style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 14px; PADDING-BOTTOM: 0px; MARGIN: 0px; LINE-HEIGHT: 1.5; PADDING-TOP: 0px; LIST-STYLE-TYPE: none">我有一台华为2318交换机 划分VLAN2 把端口5加到VLAN2中&nbsp;&nbsp;然后把16口设置为TRUNK口&nbsp;&nbsp;允许VLAN2 通过,PC接端口5,16口接上网的交换机,为什么PC不能上网,不能PING通网关,不知道哪里设的不对?您能给解释下吗?谢谢!命令我是这样写的:<span class="Apple-converted-space">&nbsp;</span><br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/><br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>vlan 2&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; 创建VLAN 2<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>port ethernet 0/0/5&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;把端口5加入VLAN 2<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>vlan 1&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; 进入VLAN 1<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>undo port ethernet 0/0/16&nbsp; &nbsp;&nbsp; &nbsp;从VLAN1中删除端口16<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>interface ethernet 0/0/16&nbsp; &nbsp;&nbsp; &nbsp;进入端口16<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>port link-type trunk&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;把16口设置为TRUNK口<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>port trunk allow vlan 2&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;允许VLAN2通过16口<br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/><br style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; LIST-STYLE-TYPE: none"/>不知道问题出在哪里?</div></span></span><br class="Apple-interchange-newline"/>

xsz88 发表于 2011-11-26 22:12:00

<p>把16口设置为TRUNK口,&nbsp;允许VLAN2 通过;</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 则说明16为TAG口,那么必须PVID为2的端口才能在VLAN2中通信,但是PC机发送的包为untag包,因此与P16相连PC机发出的数据包不能VLAN 2 中转发;</p>
<p>&nbsp;</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 同时P5为UNTAG口,所以与P5相连的端口 发送的包能在 VLAN2 中转发;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp; 所以 两台交换机不能通信,是正常的 ;</p>

sjwxs 发表于 2011-12-24 13:10:00

问题一定出在你的上联交换机。看看它的端口属性。

sjwxs 发表于 2011-12-24 13:11:00

看看它的trunk&nbsp; vlan或者qinq uplink模式
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