<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<!-- saved from url=(0014)about:internet -->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta http-equiv="Content-Style-Type" content="text/css" />
    <meta name="GENERATOR" content="Quadralay WebWorks AutoMap 2003 Platinum Edition Client for FrameMaker 8.6.6597.0" />
    <meta name="TEMPLATEBASE" content="emwebh8-1-17" />
    <meta name="LASTUPDATED" content="08/01/13 14:47:07" />
    <title>General Guidelines and Limitations </title>
    <!-- Copyright 2010-2013, Cisco Systems, Inc. All rights reserved. -->

    <link rel="StyleSheet" href="document.css" type="text/css" />
    <link rel="StyleSheet" href="catalog.css" type="text/css" />


<script> 
    var is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1; 
   
    if(is_chrome){document.domain=document.domain}
   </script>
    <script type="text/javascript" language="JavaScript1.2" src="expand.js"></script>
    <script type="text/javascript" language="JavaScript1.2" src="page.js"></script>

    <script type="text/javascript" language="JavaScript1.2">
     <!--
      function  WWNoOp() {}
      function  WWNoValue() { return ""; }

      var  VarDropDown;

      if (typeof(HTMLHelp_Object) != "undefined")
      {
        VarDropDown = new WWDropDown_Object();
      }
      else
      {
        VarDropDown = new Object();
        VarDropDown.fAnchorOpen  = WWNoOp;
        VarDropDown.fAnchorClose = WWNoOp;
        VarDropDown.fDIVOpen  = WWNoOp;
        VarDropDown.fDIVClose = WWNoOp;
      }
     // -->
    </script>

  
<SCRIPT language="javascript">
<!--
  self.document.write("<link href='"+top.relPath+"shared/style.css' rel='stylesheet' type='text/css'>");
  myid=693;
  self.document.write("<script type='text/javascript' language='JavaScript' src='"+top.relPath+"shared/con_utils.js'></scr"+"ipt>");
//-->
</SCRIPT>
</head>

  <body onload="highlightSearchTerms();" bgcolor="#ffffff">

    
    <blockquote>
    <a name="top"></a>

    
    


<a name="wp1072984"> </a><h1 class="pTitle">
General Guidelines and Limitations

</h1>
<a name="wp1074903"> </a><p class="pBody">
The trunking feature has the following general configuration guidelines and limitations:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1072985"> </a><li class="pSmartList1">F ports support trunking in Fx mode.
</li>
<a name="wp1072987"> </a><li class="pSmartList1">The trunk-allowed VSANs configured for TE, TF, and TNP links are used by the trunking protocol 
to determine the allowed active VSANs in which frames can be received or transmitted.
</li>
<a name="wp1072989"> </a><li class="pSmartList1">If a trunking enabled E port is connected to a third-party switch, the trunking protocol ensures 
seamless operation as an E port.
</li>
<a name="wp1072990"> </a><li class="pSmartList1">Trunking F ports and trunking F PortChannels are not supported on the following hardware:
</li>
<div class="pSmartList2"><ul class="pSmartList2">
<a name="wp1072991"> </a><li class="pSmartList2">91x4 switches, if NPIV is enabled and used as the NPIV core switch.</li>
<a name="wp1072992"> </a><li class="pSmartList2">Generation 1 2-Gbps Fibre Channel switching modules.</li>
</ul></div>
<a name="wp1072993"> </a><li class="pSmartList1">On core switches, the FC-SP authentication will be supported only for the physical FLOGI from the 
physical pWWN.
</li>
<a name="wp1072994"> </a><li class="pSmartList1">No FC-SP authentication is supported by the NPV switch on the server F ports.
</li>
<a name="wp1072995"> </a><li class="pSmartList1">MDS does not enforce the uniqueness of logical pWWNs across VSANs.
</li>
<a name="wp1072996"> </a><li class="pSmartList1">DPVM is not supported on trunked F port logins.
</li>
<a name="wp1072997"> </a><li class="pSmartList1">The DPVM feature is limited to the control of the port VSAN, since the EVFP protocol does not 
allow changing the VSAN on which a logical pWWN has done FLOGI.
</li>
<a name="wp1072998"> </a><li class="pSmartList1">The port security configuration will be applied to both the first physical FLOGI and the per VSAN 
FLOGIs.
</li>
<a name="wp1072999"> </a><li class="pSmartList1">Trunking is not supported on F ports that have FlexAttach enabled.
</li>
<a name="wp1073000"> </a><li class="pSmartList1">On MDS 91x4 core switches, hard zoning can be done only on F ports that are doing either NPIV 
or trunking. However, in NPV mode, this restriction does not apply since zoning is enforced on the 
core F port.
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

    </blockquote>

  </body>
</html>
