Network connections gets disconnected

  • Thread starter Thread starter Danny Sanders
  • Start date Start date
D

Danny Sanders

I have seen those symptoms when the client computer has a bad entry in DNS
for the alternate DNS server.

What do your clients point to for the alternate DNS server?

hth
DDS
 
Hi! people,
I am having a problem in my network since last week. Here is the story.....
I have a network with Windows 2000 Server and Windows XP clients. Everything
was workin fine till last week. Then we had a problem with our firewall
router and we replaced it with new one. Same time we also changed the
network Switch as well as did some windows updates on the server. Now we hav
a software applications which access the loan files from the server and this
was working fine before but since all these changes and updates, if the user
has a loan file open and does not do anything for few minutes, the software
looses the connection with the server and then user mostly looses the data
and work. This is so frustrating. I have tried to bypass the switch and no
help. I have talked with the tech support at the Netgear (my firewall
router) and according to them because we don'e loose the internet connection
and only loose the LAN connection, it's not the router.

Can anybody help?
Thanks
Raj
 
Raj said:
Hi! people,
I am having a problem in my network since last week. Here is the story.....
I have a network with Windows 2000 Server and Windows XP clients. Everything
was workin fine till last week. Then we had a problem with our firewall
router and we replaced it with new one. Same time we also changed the
network Switch as well as did some windows updates on the server. Now we hav
a software applications which access the loan files from the server and this
was working fine before but since all these changes and updates, if the user
has a loan file open and does not do anything for few minutes, the software
looses the connection with the server and then user mostly looses the data
and work. This is so frustrating. I have tried to bypass the switch and no
help. I have talked with the tech support at the Netgear (my firewall
router) and according to them because we don'e loose the internet connection
and only loose the LAN connection, it's not the router.

Can anybody help?
Thanks
Raj
Click to expand...
If the router only connects you to the Internet, that's the only
connection it could cause you to lose. You've bypassed the switch? How?
Any IP address conflicts? Can you ping the server after the connection
is lost? Any ports going down on the switch? Checked the switch logs?
Checked the server logs? Workstation logs? I've seen the same MAC
address (I know, it's not supposed to happen) cause intermittent
connections. Also look for a layer-2 loop.

....kurt
 
Hi

The DNS Settings are automatic which they get from the router and its
provided by the ISP.

Thanks

Raj
 
I have connected one user directly to router instead of the switch and that
user is still having same problem.

Thanks
Raj
 
The DNS Settings are automatic which they get from the router and its
provided by the ISP.

Thanks
Click to expand...


That is your problem right there. AD clients MUST point to the DNS server
set up for the AD domain ONLY.

Do not put your ISP's DNS server *anywhere* on an AD client. Putting your
ISP's DNS server as primary will result in long log in times, group policy
will not apply correctly, problems adding computers to the domain. Putting
your ISP's DNS server as alternate on an AD client will result in network
drives being inaccessible after a time.

Basic AD DNS setup is install DNS on a server. Point this server to itself
in the properties of TCP/IP. Point all AD clients to the DNS server set up
for the AD domain only. For Internet access set up your AD DNS server to
forward requests and list your ISP's DNS server as the forwarder. This is
the only place on an AD domain where your ISP's DNS servers should be
listed.

I suspect someone is putting your ISP's DNS server on the AD clients for
internet resolution, but that is not the way.
See:
How to configure DNS for Internet access in Windows Server 2003
http://support.microsoft.com/kb/323380/en-us


See also:
How To Install and Configure DNS Server in Windows Server 2003
http://support.microsoft.com/kb/814591/en-us

http://support.microsoft.com/kb/291382/en-us

http://support.microsoft.com/kb/825036/en-us


hth
DDS
 
I did install DNS server on my 2000 server and all my clients have my server
IP as the DNS Server but still having same problem....

Thanks
Click to expand...

I am having a similar problem. I have identified the issue but not the
solution. I wil briefly describe the problem and lok forward to any
suggestions.

Thanks.

Rajkumar

Problem:
I have a Win 2000 server with 3 work stations. The server internal
network is on a switch. The DSL modem is connected to a Linksys router
and the router is connected to the switch.

Whenever a remote access is done to the server, whether it is Windows
Remote Desktop or VPN access the connection gets broken after a period
of rtime and the internet access becomes disabled in the server as
well as the work stations. The internal network is fine!

Something similar happens when a remote access through a VPN is
attempted from a work station bringing part of the network down.

Pinging from the server shows no connection.

However I found out that if the Linksys server is reset by
disconnecting the power and reconnecting it every thing gets reset and
the internet connection in the server as well as the work stations
gets enabled.

There could be a specific issue with the DSL modem and the Linksys
router.

Perhaps a knowledgeable reader can point to some reference I can look
up.

Thanks again.

Rajkumar
( see ther is another Raj in this forum so I have to use Rajkumar as
my name.)
email: (e-mail address removed)
 
I did install DNS server on my 2000 server and all my clients have my server
IP as the DNS Server but still having same problem....

Thanks
 
Raj said:
I have connected one user directly to router instead of the switch and that
user is still having same problem.
Click to expand...

What happens when you connect the server and one workstation to the router?

Does that one user get kicked too?

moncho
 
Following is the result of the ipconfig on one of the client....
I have tried different brand firewall router also yesterday. I had Netgear
and I changed it to Linksys but no difference.

Thanks

******************************************************************
Windows IP Configuration

Host Name . . . . . . . . . . . . : ws-lisa
Primary Dns Suffix . . . . . . . : FCMPA.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : FCMPA.local
fcmpa.local

Ethernet adapter Local Area Connection 2:

Connection-specific DNS Suffix . : fcmpa.local
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network
Connection
Physical Address. . . . . . . . . : 00-13-20-0E-AF-61
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.106
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.10
DNS Servers . . . . . . . . . . . : 192.168.0.10
Primary WINS Server . . . . . . . : 192.168.0.10
Lease Obtained. . . . . . . . . . : Tuesday, April 10, 2007 10:14:26
AM
Lease Expires . . . . . . . . . . : Friday, April 20, 2007 10:14:26
AM

******************************************************************
 
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