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    <title>Port Rate Modes </title>
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<a name="wp1073333"> </a><h1 class="pTitle">
Port Rate Modes

</h1>
<a name="wp1142589"> </a><p class="pBody">
In Generation 2, Generation 3, and Generation 4 modules, you can configure the port rate modes. The 
<em class="cEmphasis">port rate mode</em> configuration is used to determine the bandwidth allocation for ports in a port group. Two 
port rate modes are supported: 

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1073335"> </a><li class="pSmartList1">Dedicated Rate Mode&#8212;A port is allocated required fabric bandwidth to sustain line traffic at the 
maximum operating speed configured on the port. For more information, see the <a href="gen206.html">&quot;Dedicated Rate 
Mode&quot; topic</a>.
</li>
<a name="wp1142567"> </a><li class="pSmartList1">Shared Rate Mode&#8212;Multiple ports in a port group share data paths to the switch fabric and share 
bandwidth. For more information, see the <a href="gen207.html">&quot;Shared Rate Mode&quot; topic</a>.
</li>
</ul></div>
<a name="wp1142571"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> In Generation 1 modules, you cannot configure the port rate modes. The mode is determined implicitly 
based on the port mode and line card type. 

</p>
<a name="wp1073344"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> Port rate modes are not supported on the Cisco Fabric Switch for HP c-Class Blade System, and the 
Cisco Fabric Switch for IBM Blade Center.

</p>
<a name="wp1073348"> </a><p class="pBody">
<a href="gen205.html#wp1144646">Table&#160;13-3</a> shows the modules that support dedicated, shared, and the default rate modes.

</p>
<a name="wp1073563"> </a><p class="pBodyRelative">
</p><div>
<table border="2" cellpadding="2" id="wp1144646table1073349">
  <caption><a name="wp1144646"> </a><div class="pTableTitle">
Table&#160;13-3	Port Rate Mode Support on Generation 2, Generation 3, and Generation 4 Modules 
and Switches&#160;

</div>
</caption>
  <tr bgcolor="#CCCCCC" align="left" valign="middle">    <th><a name="wp1144659"> </a><p class="pCellHeading">
Part Number

</p>
</th>
    <th><a name="wp1144661"> </a><p class="pCellHeading">
Product Name/

</p>
<a name="wp1144662"> </a><p class="pCellHeading">
Description

</p>
</th>
    <th><a name="wp1144664"> </a><p class="pCellHeading">
Supports 
Dedicated Rate 
Mode

</p>
</th>
    <th><a name="wp1144666"> </a><p class="pCellHeading">
Supports 
Shared Rate 
Mode

</p>
</th>
    <th><a name="wp1144668"> </a><p class="pCellHeading">
Default Speed 
Mode and Rate 
Mode on All Ports

</p>
</th>
</tr>
  <tr align="left" valign="top">    <td colspan="5" rowspan="1"><a name="wp1144670"> </a><p class="pCellHeading">
Generation 4 Modules

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144680"> </a><p class="pBody">
DS-X9248-256K9

</p>
</td>
    <td><a name="wp1144682"> </a><p class="pBody">
48-port 8-Gbps Advanced 
Fibre Channel switching 
module

</p>
</td>
    <td><a name="wp1144684"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1150449"> </a><p class="pBody">
Yes<a href="#wp1183930"><sup class="Footnote">1</sup></a>

</p>
</td>
    <td><a name="wp1144688"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144690"> </a><p class="pCellHeading">
DS-X9232-256K9

</p>
</td>
    <td><a name="wp1144692"> </a><p class="pBody">
32-port 8-Gbps Advanced 
Fibre Channel switching 
module

</p>
</td>
    <td><a name="wp1150531"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1150465"> </a><p class="pBody">
Yes<a href="gen205.html#wp1183930"><sup class="cSuperscript">1</sup></a>

</p>
</td>
    <td><a name="wp1150540"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td colspan="5" rowspan="1"><a name="wp1144731"> </a><p class="pCellHeading">
Generation 3 Modules

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144741"> </a><p class="pBody">
DS-X9248-96K9

</p>
</td>
    <td><a name="wp1144743"> </a><p class="pBody">
48-Port 8-Gbps Fibre 
Channel switching module

</p>
</td>
    <td><a name="wp1144745"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1150500"> </a><p class="pBody">
Yes<a href="#wp1154632"><sup class="Footnote">2</sup></a>

</p>
</td>
    <td><a name="wp1144753"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144755"> </a><p class="pBody">
DS-X9224-96K9

</p>
</td>
    <td><a name="wp1144757"> </a><p class="pBody">
24-Port 8-Gbps Fibre 
Channel switching module

</p>
</td>
    <td><a name="wp1144759"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1150513"> </a><p class="pBody">
Yes<a href="gen205.html#wp1154632"><sup class="cSuperscript">2</sup></a>

</p>
</td>
    <td><a name="wp1144766"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144768"> </a><p class="pBody">
DS-X9248-48K9

</p>
</td>
    <td><a name="wp1144770"> </a><p class="pBody">
4/44-Port 8-Gbps 
Host-Optimized Fibre 
Channel switching module

</p>
</td>
    <td><a name="wp1144772"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1150518"> </a><p class="pBody">
Yes<a href="gen205.html#wp1154632"><sup class="cSuperscript">2</sup></a>

</p>
</td>
    <td><a name="wp1144779"> </a><p class="pBody">
Auto Max 4 Gbps, 
Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td colspan="5" rowspan="1"><a name="wp1144781"> </a><p class="pCellHeading">
Generation 3 Fabric Switches

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144791"> </a><p class="pBody">
DS-C9148-K9

</p>
<a name="wp1144792"> </a><p class="pBody">
(Cisco MDS 9148 
Fabric switch)

</p>
</td>
    <td><a name="wp1144794"> </a><p class="pBody">
48-port 8-Gbps Fabric 
switch

</p>
</td>
    <td><a name="wp1144796"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144798"> </a><p class="pBody">
No

</p>
</td>
    <td><a name="wp1144800"> </a><p class="pBody">
Auto, Dedicated

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td colspan="5" rowspan="1"><a name="wp1144802"> </a><p class="pCellHeading">
Generation 2 Modules

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144812"> </a><p class="pBody">
DS-X9148

</p>
</td>
    <td><a name="wp1144815"> </a><p class="pBody">
48-port 4-Gbps Fibre 
Channel switching module 
<a href="#wp1144818"><sup class="Footnote">3</sup></a>

</p>
</td>
    <td><a name="wp1144820"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144822"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144824"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144826"> </a><p class="pBody">
DS-X9124

</p>
</td>
    <td><a name="wp1144828"> </a><p class="pBody">
24-port 4-Gbps Fibre 
Channel switching module

</p>
</td>
    <td><a name="wp1144830"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144832"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144834"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144836"> </a><p class="pBody">
DS-X9304-18K9

</p>
<a name="wp1144837"> </a><p class="pBody">
(MSM-18/4 
Multiservice 
module)

</p>
</td>
    <td><a name="wp1144839"> </a><p class="pBody">
18-port 4-Gbps Fibre 
Channel switching module 
with 4-Gigabit Ethernet 
ports

</p>
</td>
    <td><a name="wp1144841"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144843"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144845"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144847"> </a><p class="pBody">
DS-X9112

</p>
</td>
    <td><a name="wp1144850"> </a><p class="pBody">
12-port 4-Gbps Fibre 
Channel switching module

</p>
</td>
    <td><a name="wp1144852"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144854"> </a><p class="pBody">
No

</p>
</td>
    <td><a name="wp1144856"> </a><p class="pBody">
Auto, Dedicated

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144858"> </a><p class="pBody">
DS-X9704

</p>
</td>
    <td><a name="wp1144861"> </a><p class="pBody">
4-port 10-Gbps Fibre 
Channel switching module

</p>
</td>
    <td><a name="wp1144863"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144865"> </a><p class="pBody">
No

</p>
</td>
    <td><a name="wp1144867"> </a><p class="pBody">
Auto, Dedicated

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td colspan="5" rowspan="1"><a name="wp1144869"> </a><p class="pCellHeading">
Generation 2 Fabric Switches

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td colspan="1" rowspan="2"><a name="wp1144879"> </a><p class="pBody">
DS-C9134-K9

</p>
<a name="wp1144880"> </a><p class="pBody">
(Cisco MDS 9134 
Fabric switch)

</p>
</td>
    <td><a name="wp1144882"> </a><p class="pBody">
32-port 4-Gbps Fabric 
switch

</p>
</td>
    <td><a name="wp1144884"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144886"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144888"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144892"> </a><p class="pBody">
2-port 10-Gbps Fabric 
switch

</p>
</td>
    <td><a name="wp1144894"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144896"> </a><p class="pBody">
No

</p>
</td>
    <td><a name="wp1144898"> </a><p class="pBody">
Auto, Dedicated

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144900"> </a><p class="pBody">
DS-C9124-K9 

</p>
<a name="wp1144901"> </a><p class="pBody">
(Cisco MDS 9124 
Fabric switch)

</p>
</td>
    <td><a name="wp1144904"> </a><p class="pBody">
24-port 4-Gbps Fabric 
switch<sup class="cSuperscript"><a href="#wp1144907"><sup class="Footnote">4</sup></a>
</sup>
</p>
</td>
    <td><a name="wp1144909"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144911"> </a><p class="pBody">
No

</p>
</td>
    <td><a name="wp1144913"> </a><p class="pBody">
Auto, Dedicated

</p>
</td>
</tr>
  <tr align="left" valign="top">    <td><a name="wp1144915"> </a><p class="pBody">
DS-C9222i-K9

</p>
<a name="wp1144916"> </a><p class="pBody">
(Cisco MDS 9222i 
Multiservice 
Modular switch)

</p>
</td>
    <td><a name="wp1144918"> </a><p class="pBody">
18-port 4-Gbps Fibre 
Channel switch with 
4-Gigabit Ethernet IP 
storage services ports, and 
a modular expansion slot to 
host Cisco MDS 9000 
Family Switching and 
Services Modules

</p>
</td>
    <td><a name="wp1144920"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144922"> </a><p class="pBody">
Yes

</p>
</td>
    <td><a name="wp1144924"> </a><p class="pBody">
Auto, Shared

</p>
</td>
</tr>
</table>

<table>
  <tr>
    <td><a name="wp1183930"> </a><p class="pTableFootnote">
<a href="#wp1150449"><sup class="Footnote">1</sup></a>Supports shared rate mode.

</p>
<a name="wp1154632"> </a><p class="pTableFootnote">
<a href="#wp1150500"><sup class="Footnote">2</sup></a>Shared rate mode is supported on Fx ports only and no ISLs.

</p>
<a name="wp1144818"> </a><p class="pTableFootnote">
<a href="#wp1144815"><sup class="Footnote">3</sup></a>All ports in a 48-port 4-Gbps switching module can operate in dedicated rate mode with a 1-Gbps operating speed. However, 
if you configure one or more ports to operate in 2-Gbps or 4-Gbps dedicated rate mode, some of the other ports in the port 
group would have to operate in shared mode. 

</p>
<a name="wp1144907"> </a><p class="pTableFootnote">
<a href="#wp1144904"><sup class="Footnote">4</sup></a>All ports in a 24-port 4-Gbps switching module can operate in dedicated rate mode with a 2-Gbps operating speed. However, 
if you configure one or more ports to operate in 4-Gbps dedicated rate mode, some of the other ports in the port group would 
have to operate in shared mode. 

</p>
</td>
  </tr>
</table>
</div>
<p class="pBodyRelative">
</p>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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