DNS not updating


G

Guest

I have 2 domain contollers running Active Directory DNS.
I have a PC that had a static IP (server1) of 192.168.10.248
I rebuilt another PC (Server2) that had a dynamic address of 192.168.10.44
I need to make server2 take IP of server1 192.168.10.248. The static IP has
been configured on server 2 but does not ping by host name. (unless I add an
entry in the host file 192.168.10.248 server2 on the domain controller)

I've noticed following entries in DNS = server1 still has IP 192.168.10.248
and server2 still has IP 192.168.10.44 associated. However IP config on
Server2 shows as 192.168.19.248. Shall I delete server1 from DNS or edit the
record in DNS? or shall I remove server1 from AD users and Computers?
(note adding the host entry in the host file on the DC allowed me ping
server2 from a domain crontroller for a while, but now ping does not work on
server2)

Thanks, PL
 
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K

Kevin D. Goodknecht Sr. [MVP]

PL Microsoft Query said:
I have 2 domain contollers running Active Directory DNS.
I have a PC that had a static IP (server1) of 192.168.10.248
I rebuilt another PC (Server2) that had a dynamic address of
192.168.10.44
I need to make server2 take IP of server1 192.168.10.248. The static
IP has been configured on server 2 but does not ping by host name.
(unless I add an entry in the host file 192.168.10.248 server2 on
the domain controller)

I've noticed following entries in DNS = server1 still has IP
192.168.10.248 and server2 still has IP 192.168.10.44 associated.
However IP config on Server2 shows as 192.168.19.248. Shall I delete
server1 from DNS or edit the record in DNS?

Did you try ipconfig /registerdns?
Is the zone set to allow dynamic updates?
Does server2 have a primary DNS suffix that matches the domain name?
Is "Register this connection's addresses in DNS" checked in TCP/IP
properties? (DNS Tab)

or shall I remove server1
from AD users and Computers?

Scratching my head wondering why you want to do this and what you are trying
to accomplish.




--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps
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K

Kevin D. Goodknecht Sr. [MVP]

PL Microsoft Query said:
I have 2 domain contollers running Active Directory DNS.
I have a PC that had a static IP (server1) of 192.168.10.248
I rebuilt another PC (Server2) that had a dynamic address of
192.168.10.44
I need to make server2 take IP of server1 192.168.10.248. The static
IP has been configured on server 2 but does not ping by host name.
(unless I add an entry in the host file 192.168.10.248 server2 on
the domain controller)

Hit send too soon, the DHCP client service is required for DNS registration,
whether the client is a DHCP client or not.
Make sure the DHCP client service is running and set to automatic start up.



--
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/
===================================
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
===================================
 
G

Guest

Hi Kevin,

(lets say server1 = LADP1 and server2 = LADP2)
I think running IPCONFIG /REGISTERDNS on LADP2 is the key.

Currently a ping to LADP1 gives an IP of 192.168.10.248 (FQDN) and a ping to
LADP2 also gives the same IP 192.168.10.248 (but does not show FQDN)

DNS SERVER1 Forward lookup currenty shows :
LADP1 : 192.168.10.248, LADP2 : 192.168.10.44, WATM3 192.168.10.44
DNS SERVER1 Reverse lookup currently shows:
192.168.10.44 LADP2.test.ac.uk, 192.168.10.44 WATM3, 192.168.10.248 LADP1

DNS SERVER2 Forward lookup currently shows:
LADP1 : 192.168.10.248, LADP2 192.168.10.44, WATM3 192.168.10.44
DNS SERVER2 Reverse lookup currently shows :
192.168.10.44 LADP2.test.ac.uk, 192.168.10.44 WATM3.test.ac.uk,
192.168.10.248 LADP1.test.ac.uk

DHCP on DC1 : 192.168.10.44 LADP2.test.ac.uk lease expiration 13/10/2005
DHCP on DC2 : 192.168.10.44 WATM3.test.ac.uk lease expiration 14/10/2005

Do you think running IPCONFIG /REGISTERDNS on LADP2 wil resolve the DNS and
DHCP entries. Basically I need LADP2 to be recognised as 192.168.10.248 when
pinged from any machine on the domain.

thanks, PL
 
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K

Kevin D. Goodknecht Sr. [MVP]

PL Microsoft Query said:
Hi Kevin,

(lets say server1 = LADP1 and server2 = LADP2)
I think running IPCONFIG /REGISTERDNS on LADP2 is the key.

Currently a ping to LADP1 gives an IP of 192.168.10.248 (FQDN) and a
ping to LADP2 also gives the same IP 192.168.10.248 (but does not
show FQDN)

DNS SERVER1 Forward lookup currenty shows :
LADP1 : 192.168.10.248, LADP2 : 192.168.10.44, WATM3 192.168.10.44
DNS SERVER1 Reverse lookup currently shows:
192.168.10.44 LADP2.test.ac.uk, 192.168.10.44 WATM3, 192.168.10.248
LADP1

DNS SERVER2 Forward lookup currently shows:
LADP1 : 192.168.10.248, LADP2 192.168.10.44, WATM3 192.168.10.44
DNS SERVER2 Reverse lookup currently shows :
192.168.10.44 LADP2.test.ac.uk, 192.168.10.44 WATM3.test.ac.uk,
192.168.10.248 LADP1.test.ac.uk

DHCP on DC1 : 192.168.10.44 LADP2.test.ac.uk lease expiration
13/10/2005
DHCP on DC2 : 192.168.10.44 WATM3.test.ac.uk lease
expiration 14/10/2005

Are you saying DHCP server is running on both DCs?
This is fine but you cannot have both DHCP servers assigning the same
addresses, unless the addresses are reserved for the same machine on both
DHCP servers. You need to set up exclusions in each DHCP server for
addresses the other DHCP server can assign.

Do you think running IPCONFIG /REGISTERDNS on LADP2 wil resolve the
DNS and DHCP entries. Basically I need LADP2 to be recognised as
192.168.10.248 when pinged from any machine on the domain.

ipconfig /registerdns should register the machines addresses in DNS if the
machines are properly configured for DDNS registration.
1. DHCP client service running (Required for DNS registration even if the
client uses a static assigned address)
2. Register this connections addresses in DNS checked on the DNS tab in
TCP/IP properties.
a. Primary DNS suffix matches the zone name in DNS
-or-
b. Connection DNS suffix matches zone name in DNS -AND- "Use this
connections DNS suffix in DNS registration"
-and-
c. DNS server list in TCP/IP has the DDNS server listed.


--
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/
===================================
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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