<html><body bgcolor="#FFFFFF"><div>I belive this is the job of a load balancer and not something that can be done in dns. </div><div><br></div><div>DNS has no way of following the resulting answer ip or host, let alone knowing what protocol to follow on and how to determine what ones definition of "up" is.</div><div><br></div><div>This type if check could be done in a basic software load balancer. <br><div>-- </div><div>Scott</div>Iphone says hello.</div><div><br>On Apr 26, 2009, at 11:10 PM, "Mohammed Ejaz" <<a href="mailto:mejaz@cyberia.net.sa">mejaz@cyberia.net.sa</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div>
<div class="Section1">
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Hi all, <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Can it be possible through the bind, www records should work as
failover, I mean during the primary record unavailable and then it should go
for next www only, Pls. note that I don’t want let they work as round
robin function. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">1. Primary www record pointing 1.2.3.4 as long as it is available it
should read from the same IP, <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">2. Secondary www record pointing 4.3.2.1 it should act only incase of
primary is down. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt">Ejaz <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:
12.0pt"><o:p> </o:p></span></font></p>
</div>
</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>bind-users mailing list</span><br><span><a href="mailto:bind-users@lists.isc.org">bind-users@lists.isc.org</a></span><br><span><a href="https://lists.isc.org/mailman/listinfo/bind-users">https://lists.isc.org/mailman/listinfo/bind-users</a></span><br></div></blockquote></body></html>