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DHCP server,strange problem

 
 
Andy
Guest
Posts: n/a
 
      17th Nov 2003
I have DHCP server on win2k server.
However I can still ping to the old DHCP server.
The old DHCP server is shutdown and turned off.
Also Some clients still get the IP address from
old DHCP server. There are no logs.Also i checked in DNS
about any possible entries, why this is happenening?

 
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Marc Reynolds [MSFT]
Guest
Posts: n/a
 
      17th Nov 2003
Hi,

Are you sure the old DHCP server is not running?
Is this a switched environment? If so, you may want to try rebooting your
switches


--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.


"Andy" <(E-Mail Removed)> wrote in message
news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
> I have DHCP server on win2k server.
> However I can still ping to the old DHCP server.
> The old DHCP server is shutdown and turned off.
> Also Some clients still get the IP address from
> old DHCP server. There are no logs.Also i checked in DNS
> about any possible entries, why this is happenening?
>



 
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Guest
Posts: n/a
 
      17th Nov 2003
Yes i am Sure, The Server is powered OFF and shutdown,
and even removed the network cables from server.
Also i restarted all the Network switches,still
same problem. I still cannot understand why and
where it is finding this host, because it is still
pinging on the network with that ip address.



>-----Original Message-----
>Hi,
>
>Are you sure the old DHCP server is not running?
>Is this a switched environment? If so, you may want to

try rebooting your
>switches
>
>
>--
>
>Thanks,
>Marc Reynolds
>Microsoft Technical Support
>
>This posting is provided "AS IS" with no warranties, and

confers no rights.
>
>
>"Andy" <(E-Mail Removed)> wrote in message
>news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
>> I have DHCP server on win2k server.
>> However I can still ping to the old DHCP server.
>> The old DHCP server is shutdown and turned off.
>> Also Some clients still get the IP address from
>> old DHCP server. There are no logs.Also i checked in DNS
>> about any possible entries, why this is happenening?
>>

>
>
>.
>

 
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Lanwench [MVP - Exchange]
Guest
Posts: n/a
 
      17th Nov 2003
If you're getting replies, you're pinging something else that is assigned
that address/name. A powered-off/disconnected device cannot reply to a ping.


(E-Mail Removed) wrote:
> Yes i am Sure, The Server is powered OFF and shutdown,
> and even removed the network cables from server.
> Also i restarted all the Network switches,still
> same problem. I still cannot understand why and
> where it is finding this host, because it is still
> pinging on the network with that ip address.
>
>
>
>> -----Original Message-----
>> Hi,
>>
>> Are you sure the old DHCP server is not running?
>> Is this a switched environment? If so, you may want to

> try rebooting your
>> switches
>>
>>
>> --
>>
>> Thanks,
>> Marc Reynolds
>> Microsoft Technical Support
>>
>> This posting is provided "AS IS" with no warranties, and confers no
>> rights.
>>
>>
>> "Andy" <(E-Mail Removed)> wrote in message
>> news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
>>> I have DHCP server on win2k server.
>>> However I can still ping to the old DHCP server.
>>> The old DHCP server is shutdown and turned off.
>>> Also Some clients still get the IP address from
>>> old DHCP server. There are no logs.Also i checked in DNS
>>> about any possible entries, why this is happenening?
>>>

>>
>>
>> .



 
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Politician Spock
Guest
Posts: n/a
 
      17th Nov 2003
try TRACERT <IP>

<(E-Mail Removed)> wrote in message
news:5dd901c3ad43$ef413cf0$(E-Mail Removed)...
> Yes i am Sure, The Server is powered OFF and shutdown,
> and even removed the network cables from server.
> Also i restarted all the Network switches,still
> same problem. I still cannot understand why and
> where it is finding this host, because it is still
> pinging on the network with that ip address.
>
>
>
> >-----Original Message-----
> >Hi,
> >
> >Are you sure the old DHCP server is not running?
> >Is this a switched environment? If so, you may want to

> try rebooting your
> >switches
> >
> >
> >--
> >
> >Thanks,
> >Marc Reynolds
> >Microsoft Technical Support
> >
> >This posting is provided "AS IS" with no warranties, and

> confers no rights.
> >
> >
> >"Andy" <(E-Mail Removed)> wrote in message
> >news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
> >> I have DHCP server on win2k server.
> >> However I can still ping to the old DHCP server.
> >> The old DHCP server is shutdown and turned off.
> >> Also Some clients still get the IP address from
> >> old DHCP server. There are no logs.Also i checked in DNS
> >> about any possible entries, why this is happenening?
> >>

> >
> >
> >.
> >



 
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andy
Guest
Posts: n/a
 
      17th Nov 2003


I did tracert and it completes the trace,
and says as trace complete and does not give
any name
>-----Original Message-----
>try TRACERT <IP>
>
><(E-Mail Removed)> wrote in message
>news:5dd901c3ad43$ef413cf0$(E-Mail Removed)...
>> Yes i am Sure, The Server is powered OFF and shutdown,
>> and even removed the network cables from server.
>> Also i restarted all the Network switches,still
>> same problem. I still cannot understand why and
>> where it is finding this host, because it is still
>> pinging on the network with that ip address.
>>
>>
>>
>> >-----Original Message-----
>> >Hi,
>> >
>> >Are you sure the old DHCP server is not running?
>> >Is this a switched environment? If so, you may want to

>> try rebooting your
>> >switches
>> >
>> >
>> >--
>> >
>> >Thanks,
>> >Marc Reynolds
>> >Microsoft Technical Support
>> >
>> >This posting is provided "AS IS" with no warranties,

and
>> confers no rights.
>> >
>> >
>> >"Andy" <(E-Mail Removed)> wrote in message
>> >news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
>> >> I have DHCP server on win2k server.
>> >> However I can still ping to the old DHCP server.
>> >> The old DHCP server is shutdown and turned off.
>> >> Also Some clients still get the IP address from
>> >> old DHCP server. There are no logs.Also i checked in

DNS
>> >> about any possible entries, why this is happenening?
>> >>
>> >
>> >
>> >.
>> >

>
>
>.
>

 
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Marc Reynolds [MSFT]
Guest
Posts: n/a
 
      18th Nov 2003
Somewhere on the network a device is using the old DHCP server's address.
Try ping -a <ip address> and see if it resolves to a name. If not you will
need to get a sniff and find the Mac address and trace it down via switch
logs.

--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.


"andy" <(E-Mail Removed)> wrote in message
news:040c01c3ad4e$e63e1af0$(E-Mail Removed)...
>
>
> I did tracert and it completes the trace,
> and says as trace complete and does not give
> any name
> >-----Original Message-----
> >try TRACERT <IP>
> >
> ><(E-Mail Removed)> wrote in message
> >news:5dd901c3ad43$ef413cf0$(E-Mail Removed)...
> >> Yes i am Sure, The Server is powered OFF and shutdown,
> >> and even removed the network cables from server.
> >> Also i restarted all the Network switches,still
> >> same problem. I still cannot understand why and
> >> where it is finding this host, because it is still
> >> pinging on the network with that ip address.
> >>
> >>
> >>
> >> >-----Original Message-----
> >> >Hi,
> >> >
> >> >Are you sure the old DHCP server is not running?
> >> >Is this a switched environment? If so, you may want to
> >> try rebooting your
> >> >switches
> >> >
> >> >
> >> >--
> >> >
> >> >Thanks,
> >> >Marc Reynolds
> >> >Microsoft Technical Support
> >> >
> >> >This posting is provided "AS IS" with no warranties,

> and
> >> confers no rights.
> >> >
> >> >
> >> >"Andy" <(E-Mail Removed)> wrote in message
> >> >news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
> >> >> I have DHCP server on win2k server.
> >> >> However I can still ping to the old DHCP server.
> >> >> The old DHCP server is shutdown and turned off.
> >> >> Also Some clients still get the IP address from
> >> >> old DHCP server. There are no logs.Also i checked in

> DNS
> >> >> about any possible entries, why this is happenening?
> >> >>
> >> >
> >> >
> >> >.
> >> >

> >
> >
> >.
> >



 
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Andy
Guest
Posts: n/a
 
      18th Nov 2003
Hi mark,

Thanks for the solution. Actually I wanted to
know where and what is sniff and where i can get
or download from ? Also why and what is the
reson happening this?
>-----Original Message-----
>Somewhere on the network a device is using the old DHCP

server's address.
>Try ping -a <ip address> and see if it resolves to a

name. If not you will
>need to get a sniff and find the Mac address and trace it

down via switch
>logs.
>
>--
>
>Thanks,
>Marc Reynolds
>Microsoft Technical Support
>
>This posting is provided "AS IS" with no warranties, and

confers no rights.
>
>
>"andy" <(E-Mail Removed)> wrote in message
>news:040c01c3ad4e$e63e1af0$(E-Mail Removed)...
>>
>>
>> I did tracert and it completes the trace,
>> and says as trace complete and does not give
>> any name
>> >-----Original Message-----
>> >try TRACERT <IP>
>> >
>> ><(E-Mail Removed)> wrote in message
>> >news:5dd901c3ad43$ef413cf0$(E-Mail Removed)...
>> >> Yes i am Sure, The Server is powered OFF and

shutdown,
>> >> and even removed the network cables from server.
>> >> Also i restarted all the Network switches,still
>> >> same problem. I still cannot understand why and
>> >> where it is finding this host, because it is still
>> >> pinging on the network with that ip address.
>> >>
>> >>
>> >>
>> >> >-----Original Message-----
>> >> >Hi,
>> >> >
>> >> >Are you sure the old DHCP server is not running?
>> >> >Is this a switched environment? If so, you may want

to
>> >> try rebooting your
>> >> >switches
>> >> >
>> >> >
>> >> >--
>> >> >
>> >> >Thanks,
>> >> >Marc Reynolds
>> >> >Microsoft Technical Support
>> >> >
>> >> >This posting is provided "AS IS" with no warranties,

>> and
>> >> confers no rights.
>> >> >
>> >> >
>> >> >"Andy" <(E-Mail Removed)> wrote in message
>> >> >news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
>> >> >> I have DHCP server on win2k server.
>> >> >> However I can still ping to the old DHCP server.
>> >> >> The old DHCP server is shutdown and turned off.
>> >> >> Also Some clients still get the IP address from
>> >> >> old DHCP server. There are no logs.Also i checked

in
>> DNS
>> >> >> about any possible entries, why this is

happenening?
>> >> >>
>> >> >
>> >> >
>> >> >.
>> >> >
>> >
>> >
>> >.
>> >

>
>
>.
>

 
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Lanwench [MVP - Exchange]
Guest
Posts: n/a
 
      18th Nov 2003
He meant a network sniffer - do a google search for "Ethereal + sniffer".
Why did this happen? I don't know, I can't see your network from here. But
it is obvious that something is using that IP address, so either it's been
assigned using DHCP or someone has statically assigned it.

Andy wrote:
> Hi mark,
>
> Thanks for the solution. Actually I wanted to
> know where and what is sniff and where i can get
> or download from ? Also why and what is the
> reson happening this?
>> -----Original Message-----
>> Somewhere on the network a device is using the old DHCP server's
>> address. Try ping -a <ip address> and see if it resolves to a

> name. If not you will
>> need to get a sniff and find the Mac address and trace it down via
>> switch logs.
>>
>> --
>>
>> Thanks,
>> Marc Reynolds
>> Microsoft Technical Support
>>
>> This posting is provided "AS IS" with no warranties, and confers no
>> rights.
>>
>>
>> "andy" <(E-Mail Removed)> wrote in message
>> news:040c01c3ad4e$e63e1af0$(E-Mail Removed)...
>>>
>>>
>>> I did tracert and it completes the trace,
>>> and says as trace complete and does not give
>>> any name
>>>> -----Original Message-----
>>>> try TRACERT <IP>
>>>>
>>>> <(E-Mail Removed)> wrote in message
>>>> news:5dd901c3ad43$ef413cf0$(E-Mail Removed)...
>>>>> Yes i am Sure, The Server is powered OFF and shutdown,
>>>>> and even removed the network cables from server.
>>>>> Also i restarted all the Network switches,still
>>>>> same problem. I still cannot understand why and
>>>>> where it is finding this host, because it is still
>>>>> pinging on the network with that ip address.
>>>>>
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>> Hi,
>>>>>>
>>>>>> Are you sure the old DHCP server is not running?
>>>>>> Is this a switched environment? If so, you may want

> to
>>>>> try rebooting your
>>>>>> switches
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Thanks,
>>>>>> Marc Reynolds
>>>>>> Microsoft Technical Support
>>>>>>
>>>>>> This posting is provided "AS IS" with no warranties,
>>> and
>>>>> confers no rights.
>>>>>>
>>>>>>
>>>>>> "Andy" <(E-Mail Removed)> wrote in message
>>>>>> news:02ae01c3ad3d$3107a220$(E-Mail Removed)...
>>>>>>> I have DHCP server on win2k server.
>>>>>>> However I can still ping to the old DHCP server.
>>>>>>> The old DHCP server is shutdown and turned off.
>>>>>>> Also Some clients still get the IP address from
>>>>>>> old DHCP server. There are no logs.Also i checked

> in
>>> DNS
>>>>>>> about any possible entries, why this is happenening?
>>>>>>>
>>>>>>
>>>>>>
>>>>>> .
>>>>>>
>>>>
>>>>
>>>> .
>>>>

>>
>>
>> .



 
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