lease expiration issue

I have a win2003 DHCP server with 150+ hosts.
Recently I change the lease expiration to 8 hours(in a school system).
Now when I come in the AM I see on some desktops the IP conflict message.
Click ok.
When I look in the leases I see the "bad address" notation on a specific
IP's.
Why am I getting this condition?
I reduced the lease time because we have 70 wireless devices.

Hello,

Did these workstations went to sleep/standby mode ?

Another thing, i speak about on my blog, is the grace period. By default,
lease are still reserved 4 more hours, and the cleanup only occurs once per
hour (or if lease are starving).

To get the pig picture:
http://lordoftheping.blogspot.com/20...-expected.html

--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Will Sellers" <(E-Mail Removed)> wrote in message
news:KQ_Li.18833$Im1.8196@trnddc01...
>I have a win2003 DHCP server with 150+ hosts.
> Recently I change the lease expiration to 8 hours(in a school system).
> Now when I come in the AM I see on some desktops the IP conflict message.
> Click ok.
> When I look in the leases I see the "bad address" notation on a specific
> IP's.
> Why am I getting this condition?
> I reduced the lease time because we have 70 wireless devices.
>
>

My question is why am I getting ip conflicts?
The stations that get the message are still issued new ip addresses.
The stations are on all the time ...these are desktops directly connected.

"Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
news:eYrEOJ$(E-Mail Removed)...
> Hello,
>
> Did these workstations went to sleep/standby mode ?
>
> Another thing, i speak about on my blog, is the grace period. By default,
> lease are still reserved 4 more hours, and the cleanup only occurs once
> per hour (or if lease are starving).
>
> To get the pig picture:
> http://lordoftheping.blogspot.com/20...-expected.html
>
> --
> Cordialement,
> Mathieu CHATEAU
> English blog: http://lordoftheping.blogspot.com
> French blog: http://www.lotp.fr
>
>
> "Will Sellers" <(E-Mail Removed)> wrote in message
> news:KQ_Li.18833$Im1.8196@trnddc01...
>>I have a win2003 DHCP server with 150+ hosts.
>> Recently I change the lease expiration to 8 hours(in a school system).
>> Now when I come in the AM I see on some desktops the IP conflict message.
>> Click ok.
>> When I look in the leases I see the "bad address" notation on a specific
>> IP's.
>> Why am I getting this condition?
>> I reduced the lease time because we have 70 wireless devices.
>>
>>
>

Don't you have another station that got the same address as static ip
address ?


--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Will Sellers" <(E-Mail Removed)> wrote in message
news:BK4Mi.417$n92.263@trnddc06...
> My question is why am I getting ip conflicts?
> The stations that get the message are still issued new ip addresses.
> The stations are on all the time ...these are desktops directly connected.
>
> "Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
> news:eYrEOJ$(E-Mail Removed)...
>> Hello,
>>
>> Did these workstations went to sleep/standby mode ?
>>
>> Another thing, i speak about on my blog, is the grace period. By default,
>> lease are still reserved 4 more hours, and the cleanup only occurs once
>> per hour (or if lease are starving).
>>
>> To get the pig picture:
>> http://lordoftheping.blogspot.com/20...-expected.html
>>
>> --
>> Cordialement,
>> Mathieu CHATEAU
>> English blog: http://lordoftheping.blogspot.com
>> French blog: http://www.lotp.fr
>>
>>
>> "Will Sellers" <(E-Mail Removed)> wrote in message
>> news:KQ_Li.18833$Im1.8196@trnddc01...
>>>I have a win2003 DHCP server with 150+ hosts.
>>> Recently I change the lease expiration to 8 hours(in a school system).
>>> Now when I come in the AM I see on some desktops the IP conflict
>>> message.
>>> Click ok.
>>> When I look in the leases I see the "bad address" notation on a specific
>>> IP's.
>>> Why am I getting this condition?
>>> I reduced the lease time because we have 70 wireless devices.
>>>
>>>
>>
>
>

I found the source of the problem.
I had just finished building a second server with replication and moved the
dhcp database to the new server.
Now both servers are trying to issue leases.
There is a conflict option that I can set to tell the DHCP the number of
times to try issuing a new lease.

"Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Don't you have another station that got the same address as static ip
> address ?
>
>
> --
> Cordialement,
> Mathieu CHATEAU
> English blog: http://lordoftheping.blogspot.com
> French blog: http://www.lotp.fr
>
>
> "Will Sellers" <(E-Mail Removed)> wrote in message
> news:BK4Mi.417$n92.263@trnddc06...
>> My question is why am I getting ip conflicts?
>> The stations that get the message are still issued new ip addresses.
>> The stations are on all the time ...these are desktops directly
>> connected.
>>
>> "Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
>> news:eYrEOJ$(E-Mail Removed)...
>>> Hello,
>>>
>>> Did these workstations went to sleep/standby mode ?
>>>
>>> Another thing, i speak about on my blog, is the grace period. By
>>> default, lease are still reserved 4 more hours, and the cleanup only
>>> occurs once per hour (or if lease are starving).
>>>
>>> To get the pig picture:
>>> http://lordoftheping.blogspot.com/20...-expected.html
>>>
>>> --
>>> Cordialement,
>>> Mathieu CHATEAU
>>> English blog: http://lordoftheping.blogspot.com
>>> French blog: http://www.lotp.fr
>>>
>>>
>>> "Will Sellers" <(E-Mail Removed)> wrote in message
>>> news:KQ_Li.18833$Im1.8196@trnddc01...
>>>>I have a win2003 DHCP server with 150+ hosts.
>>>> Recently I change the lease expiration to 8 hours(in a school system).
>>>> Now when I come in the AM I see on some desktops the IP conflict
>>>> message.
>>>> Click ok.
>>>> When I look in the leases I see the "bad address" notation on a
>>>> specific IP's.
>>>> Why am I getting this condition?
>>>> I reduced the lease time because we have 70 wireless devices.
>>>>
>>>>
>>>
>>
>>
>

it may be better that both DHCP got its own scope (plit the actual range by
half, or 80/20)

--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Will Sellers" <(E-Mail Removed)> wrote in message
news:0fpMi.3600$Hb2.1333@trndny07...
>I found the source of the problem.
> I had just finished building a second server with replication and moved
> the dhcp database to the new server.
> Now both servers are trying to issue leases.
> There is a conflict option that I can set to tell the DHCP the number of
> times to try issuing a new lease.
>
> "Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> Don't you have another station that got the same address as static ip
>> address ?
>>
>>
>> --
>> Cordialement,
>> Mathieu CHATEAU
>> English blog: http://lordoftheping.blogspot.com
>> French blog: http://www.lotp.fr
>>
>>
>> "Will Sellers" <(E-Mail Removed)> wrote in message
>> news:BK4Mi.417$n92.263@trnddc06...
>>> My question is why am I getting ip conflicts?
>>> The stations that get the message are still issued new ip addresses.
>>> The stations are on all the time ...these are desktops directly
>>> connected.
>>>
>>> "Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
>>> news:eYrEOJ$(E-Mail Removed)...
>>>> Hello,
>>>>
>>>> Did these workstations went to sleep/standby mode ?
>>>>
>>>> Another thing, i speak about on my blog, is the grace period. By
>>>> default, lease are still reserved 4 more hours, and the cleanup only
>>>> occurs once per hour (or if lease are starving).
>>>>
>>>> To get the pig picture:
>>>> http://lordoftheping.blogspot.com/20...-expected.html
>>>>
>>>> --
>>>> Cordialement,
>>>> Mathieu CHATEAU
>>>> English blog: http://lordoftheping.blogspot.com
>>>> French blog: http://www.lotp.fr
>>>>
>>>>
>>>> "Will Sellers" <(E-Mail Removed)> wrote in message
>>>> news:KQ_Li.18833$Im1.8196@trnddc01...
>>>>>I have a win2003 DHCP server with 150+ hosts.
>>>>> Recently I change the lease expiration to 8 hours(in a school system).
>>>>> Now when I come in the AM I see on some desktops the IP conflict
>>>>> message.
>>>>> Click ok.
>>>>> When I look in the leases I see the "bad address" notation on a
>>>>> specific IP's.
>>>>> Why am I getting this condition?
>>>>> I reduced the lease time because we have 70 wireless devices.
>>>>>
>>>>>
>>>>
>>>
>>>
>>
>
>