以太网组环网！！！！高手指点一下！！

cj0846

<p>我想完成以太网组环，达到保护目的。选用什么设备比较合适啊！</p><p><rect id="_x0000_s1032" style="MARGIN-TOP: 205.05pt; Z-INDEX: 1; LEFT: 0px; MARGIN-LEFT: 190.5pt; WIDTH: 45pt; POSITION: absolute; HEIGHT: 23.4pt; TEXT-ALIGN: left;"></rect><rect id="_x0000_s1033" style="MARGIN-TOP: 205.05pt; Z-INDEX: 2; LEFT: 0px; MARGIN-LEFT: 271.5pt; WIDTH: 45.05pt; POSITION: absolute; HEIGHT: 23.4pt; TEXT-ALIGN: left;"></rect><rect id="_x0000_s1034" style="MARGIN-TOP: 205.05pt; Z-INDEX: 3; LEFT: 0px; MARGIN-LEFT: 361.5pt; WIDTH: 45.05pt; POSITION: absolute; HEIGHT: 23.4pt; TEXT-ALIGN: left; mso-position-horizontal: absolute; mso-position-vertical: absolute;"></rect><rect id="_x0000_s1035" style="MARGIN-TOP: 197.25pt; Z-INDEX: 4; LEFT: 0px; MARGIN-LEFT: 109.55pt; WIDTH: 45.05pt; POSITION: absolute; HEIGHT: 70.3pt; TEXT-ALIGN: left; mso-position-horizontal: absolute; mso-position-vertical: absolute;"></rect><line id="_x0000_s1036" coordsize="21600,21600" to="190.5pt,212.9pt" from="154.5pt,212.9pt" style="Z-INDEX: 5; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1037" coordsize="21600,21600" to="271.5pt,212.9pt" from="235.5pt,212.9pt" style="Z-INDEX: 6; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1038" coordsize="21600,21600" to="361.5pt,212.9pt" from="316.55pt,212.9pt" style="Z-INDEX: 7; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1039" coordsize="21600,21600" to="451.5pt,212.9pt" from="406.5pt,212.9pt" style="Z-INDEX: 8; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1040" coordsize="21600,21600" to="451.5pt,251.85pt" from="451.5pt,212.9pt" style="Z-INDEX: 9; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1041" coordsize="21600,21600" to="451.5pt,251.85pt" from="154.5pt,251.85pt" style="Z-INDEX: 10; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><rect id="_x0000_s1032" style="MARGIN-TOP: 205.05pt; Z-INDEX: 1; LEFT: 0px; MARGIN-LEFT: 190.5pt; WIDTH: 45pt; POSITION: absolute; HEIGHT: 23.4pt; TEXT-ALIGN: left;"></rect><rect id="_x0000_s1033" style="MARGIN-TOP: 205.05pt; Z-INDEX: 2; LEFT: 0px; MARGIN-LEFT: 271.5pt; WIDTH: 45.05pt; POSITION: absolute; HEIGHT: 23.4pt; TEXT-ALIGN: left;"></rect><rect id="_x0000_s1034" style="MARGIN-TOP: 205.05pt; Z-INDEX: 3; LEFT: 0px; MARGIN-LEFT: 361.5pt; WIDTH: 45.05pt; POSITION: absolute; HEIGHT: 23.4pt; TEXT-ALIGN: left; mso-position-horizontal: absolute; mso-position-vertical: absolute;"></rect><rect id="_x0000_s1035" style="MARGIN-TOP: 197.25pt; Z-INDEX: 4; LEFT: 0px; MARGIN-LEFT: 109.55pt; WIDTH: 45.05pt; POSITION: absolute; HEIGHT: 70.3pt; TEXT-ALIGN: left; mso-position-horizontal: absolute; mso-position-vertical: absolute;"></rect><line id="_x0000_s1036" coordsize="21600,21600" to="190.5pt,212.9pt" from="154.5pt,212.9pt" style="Z-INDEX: 5; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1037" coordsize="21600,21600" to="271.5pt,212.9pt" from="235.5pt,212.9pt" style="Z-INDEX: 6; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1038" coordsize="21600,21600" to="361.5pt,212.9pt" from="316.55pt,212.9pt" style="Z-INDEX: 7; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1039" coordsize="21600,21600" to="451.5pt,212.9pt" from="406.5pt,212.9pt" style="Z-INDEX: 8; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1040" coordsize="21600,21600" to="451.5pt,251.85pt" from="451.5pt,212.9pt" style="Z-INDEX: 9; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line><line id="_x0000_s1041" coordsize="21600,21600" to="451.5pt,251.85pt" from="154.5pt,251.85pt" style="Z-INDEX: 10; LEFT: 0px; POSITION: absolute; TEXT-ALIGN: left;"></line>正常情况数据走主以太网口，当中间链路任何一点终端，断点后的设备以太网数据可从令一条线回到交换中心备用以</p><p>太网口，切换时间要求1秒一下。断点前设备走原有通道不变。中心端要求一个设备解决。</p>