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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>I would open up a ticket with your eMTA vendor.<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Our approach has been two appliances that move a third IP
address between the two and sync data behind the scenes with an associated
heartbeat.  If either server goes down, the other server gets the third IP
address and things go on their merry way.  This solves the problem for all
the CPE, STBs, CMS, in addition to eMTAs.<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'>Frank<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>

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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
dhcp-users-bounces@lists.isc.org [mailto:dhcp-users-bounces@lists.isc.org] <b>On
Behalf Of </b>ae<br>
<b>Sent:</b> Tuesday, September 01, 2009 11:49 AM<br>
<b>To:</b> dhcp-users@lists.isc.org<br>
<b>Subject:</b> Failover with eMTAs<o:p></o:p></span></p>

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<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>I am trying to setup Failover for MTAs.  I have
configured failover before for normal modem booting and that works great, but
not having much success with mtas.  <o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>I have option 122 (suboptions 1 and 2) configured to allow
both of my mta dhcp servers.  I seem to be hitting a problem where an mta
is never responding to the OFFER from suboption 2 when the server for suboption
1 tells it to load balance to suboption 2’s ip.  So what happens is:<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Server1 gets a DISCOVER – tells it to load balance to
peer<o:p></o:p></p>

<p class=MsoNormal>Server2 gets a DISCOVER<o:p></o:p></p>

<p class=MsoNormal>Server2 sends OFFER<o:p></o:p></p>

<p class=MsoNormal>Rinse repeat forever.<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Does anyone have a working setup where you are doing dhcp
failover with mta devices?  Any tips?  Do I need to maybe set my
split option to not load balance?  Any tips or information would help, and
if you need more information please ask.  Thanks.<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>-Adam<o:p></o:p></p>

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