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<p>Greetings, Mike</p>
<p>You could use classes in order to mach the correct subnet to the
requesting Client.<br>
The Client does not know it's subnet, until it got an IP address. <br>
For my own, i separate the classes depending on the relay address. </p>
<p>Best regards, <br>
Daniel</p>
<p>Gesendet mit AquaMail für Android<br>
<a href="http://www.aqua-mail.com">http://www.aqua-mail.com</a></p>
<div style="font-family: sans-serif;">
<p style="margin: 10pt 0; color: black;">Am 26. Juli 2014 00:17:49 schrieb
"Senko, Mike" <Mike.Senko@seattle.gov>:</p>
<blockquote type="cite" class="gmail_quote"
style="margin: 0 0 0 0.75ex; border-left: 1px solid #808080; padding-left: 0.75ex;"><div
class=WordSection1><p class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>I’ve gone through the archives, but
haven’t found a solution to using a single dhcp
server<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span style='font-size:11.0pt'>to service multiple
subnets.<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>The subnets are set up on a router (non-cisco)
that uses dhcp-relay to pass dhcp requests <o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>through the configured switch interfaces. The
switches are layer 2 and also are configured<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>for dhcp relay.<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>The dhcp request packets show up at the
server.<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>The dhcp server then assigns and address and sends
it to the router’s address.<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>The problem I’ve run into is the server is
always sending the first dhcp address in the first
configured<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span style='font-size:11.0pt'>subnet regardless of the subnet
the request comes from.<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>In
other words, dhcp ip address assigned is always 10.1.6.200 even if the
request comes from 10.1.8.0 subnet.<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>If
the dhcp request comes from the 10.1.6.0 subnet, all is
fine.<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
think the problem is in the dhcp server
configuration:<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option domain-name
"TestLab.NSC";<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>default-lease-time
600;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>max-lease-time
7200;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>authoritative;<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>log-facility
local7;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>subnet 10.1.6.0 netmask 255.255.255.0
{<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option routers
10.1.6.2;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>range 10.1.6.200
10.1.6.254;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option subnet-mask
255.255.255.0;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>}<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>subnet 10.1.7.0 netmask 255.255.255.0
{<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option routers
10.1.6.2;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>range 10.1.7.200
10.1.7.254;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option subnet-mask
255.255.255.0;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>}<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>subnet 10.1.8.0 netmask 255.255.255.0
{<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option routers
10.1.6.2;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>range 10.1.8.200
10.1.8.254;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option subnet-mask
255.255.255.0;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>}<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>subnet 10.1.9.0 netmask 255.255.255.0
{<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option routers
10.1.6.2;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>range 10.1.9.200
10.1.9.254;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option subnet-mask
255.255.255.0;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>}<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>subnet 10.1.5.0 netmask 255.255.255.0
{<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option routers
10.1.6.2;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>range 10.1.5.200
10.1.5.254;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>option subnet-mask
255.255.255.0;<o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>}<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>This is the entire configuration, there must be
something missing. I’m not using dns, just trying to get addresses
assigned <o:p></o:p></span></font></p><p class=MsoNormal><font size=2
face=Calibri><span style='font-size:11.0pt'>to the right vlan/subnet. The
server is attached to 10.1.6.0/24.<o:p></o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'><o:p> </o:p></span></font></p><p
class=MsoNormal><font size=2 face=Calibri><span
style='font-size:11.0pt'>Thanks,
ms<o:p></o:p></span></font></p></div></blockquote>
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