DNS required ?

Hi All!
I facing the following problem:
Sometimes i get error while connecting to my SQLServer instance from client
machine "Timeout expired". I found it occurs when my DNS server is not reach
eable from client machine. But i connecting through alias, created by Client
network utility, where i s
pecify directly IP-address, NOT DNS-name ! I tried to connect through QA, os
ql - resuls the same.
Why it requires DNS ? What parameter i missing ?
Telnet on IP-address port works normally.
Server - NT 4.0 SP6 PDC, SQLServer 2000 Std Ed
Client - Windows 98 or NT 4.0IF you try to connect to a server named London, the name London needs to be
resolved to the IP address. This is the function that DNS provides...
However if you use theIP address yourself, DNS does not have to do anything.
Wayne Snyder MCDBA, SQL Server MVP
Computer Education Services Corporation (CESC), Charlotte, NC
(Please respond only to the newsgroups.)
I support the Professional Association for SQL Server
(www.sqlpass.org)
"Slava Melnikov" <vasya000@.yandex.ru> wrote in message
news:F6CBFA12-2F13-452B-B848-5BA82228D0A1@.microsoft.com...
> Hi All!
> I facing the following problem:
> Sometimes i get error while connecting to my SQLServer instance from
client machine "Timeout expired". I found it occurs when my DNS server is
not reacheable from client machine. But i connecting through alias, created
by Client network utility, where i specify directly IP-address, NOT DNS-name
! I tried to connect through QA, osql - resuls the same.
> Why it requires DNS ? What parameter i missing ?
> Telnet on IP-address port works normally.
> Server - NT 4.0 SP6 PDC, SQLServer 2000 Std Ed
> Client - Windows 98 or NT 4.0|||What version of the SQL Server ODBC driver (sqlsrv32.dll) is installed on
the client. There is a issue with wsome of the earlier MDAC 2.6 SQL Server
ODBC drivers. If your driver version is 2000.8.0.194 you may be running
into this problem. It also occurs on some later versions as well. If you
install one of the more recent versions of MDAC, such as MDAC 2.7 then the
problem I am describing will not occur. Of course this assumes that you are
using the version of MDAC that has the problem.
When you ping the ip address does the response come back quickly or dies it
take some time?
Rand
This posting is provided "as is" with no warranties and confers no rights.|||O-oh!
sqlsrv32.dll version is really 2000.8.0.194.
Thanks for help, Rand !
I should install latest service pack or new MDAC it's
enough ?
ping works normally

>--Original Message--
>What version of the SQL Server ODBC driver
(sqlsrv32.dll) is installed on
>the client. There is a issue with wsome of the earlier
MDAC 2.6 SQL Server
>ODBC drivers. If your driver version is 2000.8.0.194 you
may be running
>into this problem. It also occurs on some later versions
as well. If you
>install one of the more recent versions of MDAC, such as
MDAC 2.7 then the
>problem I am describing will not occur. Of course this
assumes that you are
>using the version of MDAC that has the problem.
>When you ping the ip address does the response come back
quickly or dies it
>take some time?
>Rand
>This posting is provided "as is" with no warranties and
confers no rights.
>.
>