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We have PCs that change there IP address multiple times each week,
but there DNS entries do not update when their IPs change. It used to
work in the past, but for some reason it has stopped. We use static
IPs and have a 2003 DC/DNS server with an active directory integrated
zone and these machines are part of the domain. We have no idea what
changes have been made that could have caused this, any thoughts?
Thanks
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Read inline please.
In news:1179776942.083628.308770[ at ]u36g2000prd.googlegroups.com,
z.heineman[ at ]gmail.com <z.heineman[ at ]gmail.com> typed:
[Quoted Text] > We have PCs that change there IP address multiple times each week,
> but there DNS entries do not update when their IPs change. It used to
> work in the past, but for some reason it has stopped. We use static
> IPs and have a 2003 DC/DNS server with an active directory integrated
> zone and these machines are part of the domain. We have no idea what
> changes have been made that could have caused this, any thoughts?
Why is it the when someone says "We use static IPs" I suspect they have
disabled the DHCP client service?
The DHCP client service is required for all DNS registrations, whether the
client is DHCP or static addressed.
--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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[Quoted Text] > Why is it the when someone says "We use static IPs" I suspect they have
> disabled the DHCP client service?
> The DHCP client service is required for all DNS registrations, whether the
> client is DHCP or static addressed.
No, the DHCP service is not disabled, it is running on all the
computers. They do update if we ipconfig /registerdns or restart the
PC, but that is not practical.
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client will send a new lease request message to the DHCP server when the
lease period is half over.If the server hears the request message and there's
no reason to reject it, it sends a DHCPACK to the client.
can it be a service failing on the client? can it be some blockage on your
network so that the lease process can not happen
UDP 68 and 67
is there any interesting events on the event log? client and server, please
post the events
http://smtp25.blogspot.com/2007/04/discovering-dhcp-discovery-in-smtp25.html
Best
oz
--
Oz Ozugurlu
Systems Engineer
MCSE 2003| M+| S+
MCDST | Security+|Project+
oz[ at ]SMTp25.org
http://smtp25.blogspot.com (Blog)
"z.heineman[ at ]gmail.com" wrote:
[Quoted Text] > > Why is it the when someone says "We use static IPs" I suspect they have
> > disabled the DHCP client service?
> > The DHCP client service is required for all DNS registrations, whether the
> > client is DHCP or static addressed.
>
>
> No, the DHCP service is not disabled, it is running on all the
> computers. They do update if we ipconfig /registerdns or restart the
> PC, but that is not practical.
>
>
>
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if your PC's are assigning themself APIPA 169.254.X.Y ,
you tried below and it worked,
IPCONFIG /RELEASE
IPCONFIG /RENEW
IPCONFIG /ALL
multiple workstations are experiencing problems with leasing IP addresses,
the problem is most likely related to the DHCP server itself
Check Scope options on the DNCP server, make sure it is active, amke sure
there is no overlapping scopes in DHCP server
http://technet2.microsoft.com/windowsserver/en/library/6350df25-a5d9-46e4-82c7-85d9141aa24f1033.mspx?mfr=true
Good Luck
oz
--
Oz Ozugurlu
Systems Engineer
MCSE 2003| M+| S+
MCDST | Security+|Project+
oz[ at ]SMTp25.org
http://smtp25.blogspot.com (Blog)
"z.heineman[ at ]gmail.com" wrote:
[Quoted Text] > > Why is it the when someone says "We use static IPs" I suspect they have
> > disabled the DHCP client service?
> > The DHCP client service is required for all DNS registrations, whether the
> > client is DHCP or static addressed.
>
>
> No, the DHCP service is not disabled, it is running on all the
> computers. They do update if we ipconfig /registerdns or restart the
> PC, but that is not practical.
>
>
>
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All of our addresses are assigned statically, we do not use DHCP. The
DHCP client service is not disabled though. The problem is that
laptop A changes its ip from 10.10.2.1 to 10.10.3.1 but when you ping
"laptop A" it will still reference 10.10.2.1. Even when checking the
DNS records it still references the old. Why does it not update when
the IP is changed manually?
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<z.heineman[ at ]gmail.com> wrote in message
news:1179929649.798951.223900[ at ]w5g2000hsg.googlegroups.com...
[Quoted Text] > All of our addresses are assigned statically, we do not use
> DHCP. The
> DHCP client service is not disabled though. The problem is
> that
> laptop A changes its ip from 10.10.2.1 to 10.10.3.1 but when
> you ping
> "laptop A" it will still reference 10.10.2.1. Even when
> checking the
> DNS records it still references the old. Why does it not
> update when
> the IP is changed manually?
Under 'Advanced TCP/IP Settings' -
Do you list the correct IP address for the local DNS server, and
is the box 'Register this connection's addresses in DNS' checked?
Len Agoado
agoado[ at ]msn.com
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Read inline please.
In news:1179929649.798951.223900[ at ]w5g2000hsg.googlegroups.com,
z.heineman[ at ]gmail.com <z.heineman[ at ]gmail.com> typed:
[Quoted Text] > All of our addresses are assigned statically, we do not use DHCP. The
> DHCP client service is not disabled though. The problem is that
> laptop A changes its ip from 10.10.2.1 to 10.10.3.1 but when you ping
> "laptop A" it will still reference 10.10.2.1. Even when checking the
> DNS records it still references the old. Why does it not update when
> the IP is changed manually?
I would think that it should, however by default Windows XP will re-register
in DNS once every 24 hours.
That said, if you are manually changing the IP addresses, it doesn't seem
any more impractical to select the Support tab of the NIC Status and
clicking the Repair button. Apparently you're changing other settings too,
like the Default gateway because it appears these addresses are on different
LAN segments.
Though I would really wonder why you haven't implemented a DHCP server.
--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
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http://support.wftx.us/
http://message.wftx.us/
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[Quoted Text] >Do you list the correct IP address for the local DNS server, and
>is the box 'Register this connection's addresses in DNS' checked?
Yes.
>Apparently you're changing other settings too,
>like the Default gateway because it appears these addresses are on different LAN segments.
>Though I would really wonder why you haven't implemented a DHCP server.
We don't use DHCP for security reasons. Yes, the IP and gate way is
changed b/c they are on different LAN segements. I was thinking this
was more of a Server issue and some DNS setting was set the wrong
way. It does register when we do ipconfig /registerdns, but shouldn't
to work on its own?
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Read inline please.
In news:1180013729.265911.4140[ at ]m36g2000hse.googlegroups.com,
z.heineman[ at ]gmail.com <z.heineman[ at ]gmail.com> typed:
[Quoted Text] >> Do you list the correct IP address for the local DNS server, and
>> is the box 'Register this connection's addresses in DNS' checked?
>
> Yes.
>
>> Apparently you're changing other settings too,
>> like the Default gateway because it appears these addresses are on
>> different LAN segments. Though I would really wonder why you haven't
>> implemented a DHCP server.
>
> We don't use DHCP for security reasons. Yes, the IP and gate way is
> changed b/c they are on different LAN segements. I was thinking this
> was more of a Server issue and some DNS setting was set the wrong
> way. It does register when we do ipconfig /registerdns, but shouldn't
> to work on its own?
Once every 24 hours, however, since Gateways are changing it may be
advisable to use the repair button because it actually performs additional
commands.
Dynamic Host Configuration Protocol (DHCP) lease is renewed: ipconfig
/renew
Address Resolution Protocol (ARP) cache is flushed: arp -d *
Reload of the NetBIOS name cache: nbtstat -R
NetBIOS name update is sent: nbtstat -RR
Domain Name System (DNS) cache is flushed: ipconfig /flushdns
DNS name registration: ipconfig /registerdns
The following action has been added to Windows XP Service Pack 1: IEEE
802.1X Authentication Restart
--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
http://www.lonestaramerica.com/
http://support.wftx.us/
http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
http://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:
http://www.oehelp.com/OEBackup/Default.aspx
===================================
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