DHCP question/Scenario

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booker@mgt

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looking at the DHCP logs on a non windows DHCP server(Infoblox Grid Manager
appliance), it appears that my switch ports are active and live on a boot
cycle, because I can see the dhcp discover message sent from the Windows XP
client, and I can see the infoblox appliance send back the offer. But it
stops right there upon either booting or changing networks. It will repeat
the discover and offer process about three times..

Now if I take out the network cable for about 10 seconds and plug it back
into the machine and check the dhcp logs, I then see the full dhcp process in
action.. Discover, offer, request, acknowledgment

What, if anything, could be causing this from the XP client side.

I am trying to determine exactly wher the problem lies.

In a nutshell, most of my XP clients, if their machine is off during the
whole time of their lease (12 hours), or if they are on a different
network(i.e a home router), and come into my building to get on my network),
I will see this discover and offer process occur upon booting up, and then
failing. Thus I get calls about, hey i can't get on the network..... if i
have them restart, everything is fine...

What could be going on?
 
RE: DHCP question/Scenario

Let me add, when I look at the event log for one of my test machines, during
the boot, I will see an error about the semaphore timing out

But looking at the log after i unplug and re plug in the cable, it just
detects that spaning tree protocol is running as information and acts normally



"booker@mgt" wrote:

> looking at the DHCP logs on a non windows DHCP server(Infoblox Grid Manager
> appliance), it appears that my switch ports are active and live on a boot
> cycle, because I can see the dhcp discover message sent from the Windows XP
> client, and I can see the infoblox appliance send back the offer. But it
> stops right there upon either booting or changing networks. It will repeat
> the discover and offer process about three times..
>
> Now if I take out the network cable for about 10 seconds and plug it back
> into the machine and check the dhcp logs, I then see the full dhcp process in
> action.. Discover, offer, request, acknowledgment
>
> What, if anything, could be causing this from the XP client side.
>
> I am trying to determine exactly wher the problem lies.
>
> In a nutshell, most of my XP clients, if their machine is off during the
> whole time of their lease (12 hours), or if they are on a different
> network(i.e a home router), and come into my building to get on my network),
> I will see this discover and offer process occur upon booting up, and then
> failing. Thus I get calls about, hey i can't get on the network..... if i
> have them restart, everything is fine...
>
> What could be going on?
>
>
 
RE: DHCP question/Scenario


One of the events in the event log

Event Type: Warning
Event Source: Dhcp
Event Category: None
Event ID: 1003
Date: 9/18/2007
Time: 9:52:11 AM
User: N/A
Computer: COMPUTERNAME
Description:
Your computer was not able to renew its address from the network (from the
DHCP Server) for the Network Card with network address 00188BDD0127. The
following error occurred:
The semaphore timeout period has expired. . Your computer will continue to
try and obtain an address on its own from the network address (DHCP) server.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 79 00 00 00 y...

"booker@mgt" wrote:

> Let me add, when I look at the event log for one of my test machines, during
> the boot, I will see an error about the semaphore timing out
>
> But looking at the log after i unplug and re plug in the cable, it just
> detects that spaning tree protocol is running as information and acts normally
>
>
>
> "booker@mgt" wrote:
>
> > looking at the DHCP logs on a non windows DHCP server(Infoblox Grid Manager
> > appliance), it appears that my switch ports are active and live on a boot
> > cycle, because I can see the dhcp discover message sent from the Windows XP
> > client, and I can see the infoblox appliance send back the offer. But it
> > stops right there upon either booting or changing networks. It will repeat
> > the discover and offer process about three times..
> >
> > Now if I take out the network cable for about 10 seconds and plug it back
> > into the machine and check the dhcp logs, I then see the full dhcp process in
> > action.. Discover, offer, request, acknowledgment
> >
> > What, if anything, could be causing this from the XP client side.
> >
> > I am trying to determine exactly wher the problem lies.
> >
> > In a nutshell, most of my XP clients, if their machine is off during the
> > whole time of their lease (12 hours), or if they are on a different
> > network(i.e a home router), and come into my building to get on my network),
> > I will see this discover and offer process occur upon booting up, and then
> > failing. Thus I get calls about, hey i can't get on the network..... if i
> > have them restart, everything is fine...
> >
> > What could be going on?
> >
> >
 
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