<div dir="ltr"><div>The CRM module is just to allow you to have 2 control links.  ALl it is a long winded way of giving the control plane another interface  We would use these for resiliency and redundancy on the control plane.<br>
<br>We already have this resiliency in the data plane cos we have more than one member interface per fab link.<br><br></div>You are right though, it is NOT needed but if the customer needs that level of redundancy then install it.  We have one customer with the CRM modules installed in its 3600 clusters.<br>
<br>However please note there was a PR raised last year regarding the firmware of the module I would suggest finding the PR and upgrading as per the KB article in it<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On 11 May 2011 12:17, Altaf Ahmad <span dir="ltr"><<a href="mailto:aahmad@bmc.com.sa" target="_blank">aahmad@bmc.com.sa</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal">Hi Experts,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I did configure the clustering of SRX 3400 chassis without installing SRX3K-CRM Module and it went successful. Could anyone please let tell me that then what is the purpose of CRM? Even in Juniper SRX3400 hardware guide I read that this module is necessary for the clustering.  But I am achieving the clustering feature without  installing the module. <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Kind Regards,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><img src="cid:image001.png@01CC0FD5.A7F16E90" alt="Description: cid:image005.png@01CBC300.A254E4C0" height="38" width="86"> <b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#244061" lang="EN-CA"> Altaf Ahmad</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy" lang="EN-CA"> </span></b><b><span style="font-family:"Arial","sans-serif";color:#e36c0a">|</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy"> </span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#f79646">Senior Solutions Designer<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#f79646">                       </span></b><b><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:#002060">CCIE # 28697 (R&S), CCIE SP (Written), CCSP</span></b><span style="font-size:8.0pt;font-family:"Times New Roman","serif";color:#002060"><u></u><u></u></span></p>
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