I have checked the spelling. I have given the correct spelling in the conf file . Still iam not able to see the DHCPNAK.<br>I have even tried with always-broadcast on; also<br><br>-kalyan <br><br><div class="gmail_quote">On Fri, Mar 19, 2010 at 4:29 PM, Glenn Satchell <span dir="ltr"><<a href="mailto:glenn.satchell@uniq.com.au">glenn.satchell@uniq.com.au</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Make sure you spell it correctly in the conf file. Due to the way the parser works a spelling mistake on a single keyword can be parsed as a variable :) This is not in the documentation, but if you search the mail archives you will find this mentioned...<br>
<br>
So, in this example there are no relays, only directly connected clients? Check the always-broadcast on; statement in the dhcpd.conf man page. It may (or may not) help.<br>
<br>
What is shown in the logs of the dhcpd server?<br>
<br>
Try using a packet sniffer (eg ethereal, snoop, tcpdump) to look at the traffic to see what flags and settings are in the actual request packets.<br>
<br>
regards,<br><font color="#888888">
-glenn</font><div class="im"><br>
<br>
On 03/19/10 21:46, kalyan Alle wrote:<br>
</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">
Ya i have kept authoritative; at the top of the conf file. Still iam<br>
facing the same issue.<br>
Plz let mw know if i have to do something else .<br>
<br>
-kalyan<br>
<br>
On Fri, Mar 19, 2010 at 3:46 PM, kalyan Alle <<a href="mailto:kalyan.alle@gmail.com" target="_blank">kalyan.alle@gmail.com</a><br></div><div class="im">
<mailto:<a href="mailto:kalyan.alle@gmail.com" target="_blank">kalyan.alle@gmail.com</a>>> wrote:<br>
<br></div><div class="im">
I did not try it.<br>
I will try putting authoritative at the beginning of the conf file.<br>
<br>
thanks glenn.....<br>
<br>
<br>
<br>
On Fri, Mar 19, 2010 at 3:40 PM, Glenn Satchell<br></div><div><div></div><div class="h5">
<<a href="mailto:glenn.satchell@uniq.com.au" target="_blank">glenn.satchell@uniq.com.au</a> <mailto:<a href="mailto:glenn.satchell@uniq.com.au" target="_blank">glenn.satchell@uniq.com.au</a>>> wrote:<br>
<br>
Have you included the authoritative statement? by default ISC<br>
dhcpd is not authoritative. See dhcpd.conf man page, following<br>
on from the earlier section already posted:<br>
...<br>
<br>
If the server knows nothing about the address,<br>
it will remain silent, unless the address is incorrect for<br>
the network segment to which the client has been attached<br>
and the server is authoritative for that network segment, in<br>
which case the server will send a DHCPNAK even though it<br>
doesn't know about the address.<br>
...<br>
The authoritative statement<br>
<br>
authoritative;<br>
<br>
not authoritative;<br>
<br>
The DHCP server will normally assume that the configura-<br>
tion information about a given network segment is not<br>
known to be correct and is not authoritative. This is so<br>
that if a naive user installs a DHCP server not fully<br>
understanding how to configure it, it does not send spuri-<br>
ous DHCPNAK messages to clients that have obtained<br>
addresses from a legitimate DHCP server on the network.<br>
<br>
Network administrators setting up authoritative DHCP<br>
servers for their networks should always write authorita-<br>
tive; at the top of their configuration file to indicate<br>
that the DHCP server should send DHCPNAK messages to mis-<br>
configured clients. If this is not done, clients will be<br>
unable to get a correct IP address after changing subnets<br>
until their old lease has expired, which could take quite<br>
a long time.<br>
<br>
regards,<br>
-glenn<br>
<br>
<br>
On 03/19/10 21:00, kalyan Alle wrote:<br>
<br>
The DHCPNAK is sent by the windows DHCP server configured<br>
but my device<br>
with ISC dhcp-4.1.0 is unable to send the DHCPNAK.<br>
Plz suggest if this is the expected behaviour or not.<br>
<br>
-kalyan<br>
<br>
On Fri, Mar 19, 2010 at 3:20 PM, kalyan Alle<br>
<<a href="mailto:kalyan.alle@gmail.com" target="_blank">kalyan.alle@gmail.com</a> <mailto:<a href="mailto:kalyan.alle@gmail.com" target="_blank">kalyan.alle@gmail.com</a>><br>
<mailto:<a href="mailto:kalyan.alle@gmail.com" target="_blank">kalyan.alle@gmail.com</a><br>
<mailto:<a href="mailto:kalyan.alle@gmail.com" target="_blank">kalyan.alle@gmail.com</a>>>> wrote:<br>
<br>
I have got the issue with the setup as below<br>
<br>
* (169.254.128.132)<br>
1) DUT(SU)(DHCP Server)----Ethernet0-----Win XP PC<br>
(DHCP Client)<br>
<br>
2) Windows 2003 Server (192.168.9.2) ----Eth----WIN<br>
XP (DHCP Client)*<br>
<br>
*<br>
*<br>
<br>
*4) Enable the DHCP Server on DUT<br>
5) Make WinXP PC as Client and get the ip address (say<br>
169.254.128.10)<br>
6) Disconnect the DHCP Client PC and connect to windows<br>
2003 Server i.e another<br>
<br>
DHCP Server configured on 192.168.9.0 subnet.<br>
7) DHCP Client sends the DHCP request message with the<br>
old ip address, DHCP<br>
server ( windows 2003 server) responds with DHCPNAK<br>
message and after receiving<br>
DHCPNAK the client restarts the allocation procedure<br>
with DHCPDISCOVER message.<br>
<br>
<br>
8) Clients gets ip address from Win server as 192.168.9.100.<br>
9) Disconnect the DHCP Client and reconnect to Mumbai<br>
SU/DUT.<br>
10)Again DHCP client sends the DHCP request message to<br>
the DHCP server with<br>
assigned ip address which is in 192.168.9.0 subnet to<br>
DUT DHCP server.<br>
<br>
<br>
The DUT DHCP server is silent and doesn't send any<br>
DHCPNAK message.<br>
<br>
Can any one comment or let me know the solution for this<br>
scenario.<br>
<br>
thanks<br>
kalyan*<br>
<br>
<br>
</div></div></blockquote><div><div></div><div class="h5">
_______________________________________________<br>
dhcp-users mailing list<br>
<a href="mailto:dhcp-users@lists.isc.org" target="_blank">dhcp-users@lists.isc.org</a><br>
<a href="https://lists.isc.org/mailman/listinfo/dhcp-users" target="_blank">https://lists.isc.org/mailman/listinfo/dhcp-users</a><br>
</div></div></blockquote></div><br>