<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.3268" name=GENERATOR></HEAD>
<BODY>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>Hi
Damian,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>Yes - Ive had this
problem (and still working on a solution). it goes like
this.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>Two servers in
failover pair and a PC with PXEboot still enabled.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008> PXEboot
request from PC is given address "ABCD" by
"Server-1"</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008> Server-1 puts PC=ABCD and ABCD=PC
into DNS</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008> PC
keeps booting....</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008> OS Boot
request from PC is given "EFGH" by
"Server-2"</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008> DHCP has "one_lease_per_client
on;"...</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008> Server 2 tells Server-1
that PC now= EFGH, so</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008> Server-1 removes the entries given
for "PC=ABCD" and :"ABCD=PC" from the DNS.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>
</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>
End result - PC has a valid lease and there is nothing in the DNS -
aaagh!</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008> </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>Crux is
that this isnt considered a fault as according to "the
specficiations" and other dialogue in this mail list this is a design
feature.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>
The OS-boot boot packet is sent with a
client-identifier</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>
The PXEboot packet is sent without this identifier,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>Therefore "according
to the specification" these are different NIC's so should be given
different leases</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008> </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=234352423-24032008>Cheers &
Good Luck</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=234352423-24032008>Paul:)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV class=Section1>
<P class=MsoNormal><?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p> All,<BR><BR>Setup: two
peered servers.<BR><BR>Problem: occasional lost of dns data due to lease
expiration.<BR>Looks like workstation omits T1 and T2 communication, and renews
its<BR>lease at T3. Well, one peer adds dns data. The other find the
lease<BR>expired and removes dns data a split second after the lease was
granted.<BR><BR>Anybody with similar problem? Any help would be
appreciated!<BR><BR><BR>Log snips:<BR>Mar 3 08:28:57
s_sys@tlpgbrdns-2.edj.ad.edwardjones.com dhcpd: Added<BR>new forward map from
USU41602D1.b22838.branches.edwardjones.com to<BR>10.145.101.200<BR><BR>Mar
3 08:28:57 s_sys@nlpgbrdns-1.edj.ad.edwardjones.com dhcpd:
if<BR>USU41602D1.b22838.branches.edwardjones.com IN
TXT<BR>"312e461c3d4bf095111c87d30e4f30e7f2" rrset exists
and<BR>USU41602D1.b22838.branches.edwardjones.com IN A 10.145.101.200
rrset<BR>exists delete USU41602D1.b22838.branches.edwardjones.com IN
A<BR>10.145.101.200: success.<BR><BR><BR><BR><BR>Damjan Stulic<BR>IS Security
Identity Management<BR>Edward Jones<BR> <BR> If you are not the intended
recipient of this message (including attachments), or if \<BR>you have received
this message in error, immediately notify us and delete it and any
\<BR>attachments. If you no longer wish to receive e-mail from Edward
Jones, please send \<BR>this request to messages@edwardjones.com. You must
include the e-mail address that \<BR>you wish not to receive e-mail
communications. For important additional information \<BR>related to this
e-mail, visit <A
href="http://www.edwardjones.com/US_email_disclosure">www.edwardjones.com/US_email_disclosure</A><BR><BR></o:p></P></DIV></BODY></HTML>