On-off DNS

[Ron Sparks]

Having problems at client site. They have Windows 2000 Server, running AD
and DHCP. The Windows 2000 server is the DNS server, XP machines are
pointing to the Server for DNS, and the rest of the computers are Windows
98. Internet access is DSL through an Actiontec DSL router. The server
seems to get to the Internet no problem. Most of the time the workstations
can get out, but they are not always able to connect to a site using DNS.
It is like it works sometimes, but not always.

Not sure if all settings are correct. Any ideas?

Thank you for your help in advance!

Candace Sparks

 

[Ace Fekay [MVP]]

In

Having problems at client site. They have Windows 2000 Server,
running AD and DHCP. The Windows 2000 server is the DNS server, XP
machines are pointing to the Server for DNS, and the rest of the
computers are Windows
98. Internet access is DSL through an Actiontec DSL router. The
server seems to get to the Internet no problem. Most of the time the
workstations can get out, but they are not always able to connect to
a site using DNS. It is like it works sometimes, but not always.

Not sure if all settings are correct. Any ideas?

Thank you for your help in advance!

Candace Sparks

Check to see if it's an MTU issue first ( a known issue with ADSL):

MTU - How to test and how to set in registry:
http://gw.renner.bei.t-online.de/windowsxp/mtu.htm

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS-IS" with no warranties and confers no
rights.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory

 

[Kevin D. Goodknecht [MVP]]

In

Having problems at client site. They have Windows 2000 Server,
running AD and DHCP. The Windows 2000 server is the DNS server, XP
machines are pointing to the Server for DNS, and the rest of the
computers are Windows
98. Internet access is DSL through an Actiontec DSL router. The
server seems to get to the Internet no problem. Most of the time the
workstations can get out, but they are not always able to connect to
a site using DNS. It is like it works sometimes, but not always.

Not sure if all settings are correct. Any ideas?

Thank you for your help in advance!

Candace Sparks

Have you verified the the root "." forward lookup zone has been deleted?
298148 - HOWTO Remove the Root Zone (Dot Zone):
http://support.microsoft.com/default.aspx?scid=kb;en-us;298148&Product=win2000

 

[Herb Martin]

Having problems at client site. They have Windows 2000 Server, running AD
and DHCP. The Windows 2000 server is the DNS server, XP machines are
pointing to the Server for DNS, and the rest of the computers are Windows
98. Internet access is DSL through an Actiontec DSL router. The server
seems to get to the Internet no problem. Most of the time the workstations
can get out, but they are not always able to connect to a site using DNS.
It is like it works sometimes, but not always.

Not sure if all settings are correct. Any ideas?

There is a common cause of these symptoms for which you
should check:

Having BOTH Internal and External DNS servers specified
in the client NIC properties.

Depending on which one they actually "latch onto" they will
be able to resolve first inside, then another time outside etc.

Unless the internal server is properly forwarding for external
resolution, in which case external will usually work all of the
time and internal will fail unpredictably.

Set ALL clients to use ONLY INTERNAL DNS servers.
Then have the internal server FORWARD as necessary to
handle the Internet lookups.

*Clients include DCs an DNS servers too!