RE: How to solve random VPN disconnection issue
- From: v-terliu@xxxxxxxxxxxxxxxxxxxx (Terence Liu [MSFT])
- Date: Thu, 08 Nov 2007 07:01:51 GMT
Hello Chris,
Thank you for posting here. Let's also thank others for the input.
According to your description, I understand that the remote clients random
disconnect to SBS thru VPN connection. If I have misunderstood the problem,
please don't hesitate to let me know.
Based on my research, I suggest we try the following steps to see if we can
resolve this issue:
1. The random disconnection issue seem the known issue about apply Windows
server 2003 sp2 on SBS. Do you install Windows server 2003 sp2 on SBS? If
yes, please perform the following steps:
1) Update the network adapter drivers
Contact the network adapter manufacturer or contact the original equipment
manager (OEM) for the computer to determine whether an updated network
adapter driver is available. You must have drivers that are compatible with
NDIS 5.2 or with a later version.
2) Modify the registry to disable Receive Side Scaling
a. Click Start, click Run, type regedit , and then click OK.
b. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
c. If the EnableRSS registry entry does not exist, create it. To do this,
follow these steps:
a) On the Edit menu, point to New, and then click DWORD Value.
b) In the New Value #1 box, type EnableRSS , and then press ENTER.
d. Right-click EnableRSS, and then click Modify.
e. In the Value data box, type 0 (zero), and then click OK.
f. Exit Registry Editor.
3) Disable offloading support
a. Click Start, click Run, type regedit , and then click OK.
b. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
c. In the details pane, right-click EnableTCPA, and then click Modify.
Note: If the EnableTCPA registry entry does not exist, create it. To do
this, follow these steps:
a) On the Edit menu, point to New, and then click DWORD Value.
b) In the New Value #1 box, type EnableTCPA , and then press ENTER.
d. In the Value data box, type 0 (zero), and then click OK.
e. Exit Registry Editor.
f. Restart the computer.
2. If the issue persists, I suggest we try the following steps to
reconfigure the VPN connection see if we can resolve this issue:
1) Disable RRAS
a. Schedule a network down time.
b. Please open Routing and Remote Access console on SBS thru run command
"rrasmgmt.msc"
c. Right click the SBSname (local), select Disable Routing and Remote
Access console
2) Run CEICW on SBS
You have to rerun the CEICW to make sure your SBS 2003 server have right
network configuration. Go through the follow KB and Rerun CEICW again
carefully.
How to configure Internet access in Windows Small Business Server 2003
http://support.microsoft.com/kb/825763/en-us
3) Run Remote Access wizard
a. On the Small Business Server 2003-based server, click To Do List in the
left pane of the Server Management console.
b. Under Network Tasks, click Configure Remote Access.
c. Click Next, click Enable Remote Access, click to select the VPN Access
check box, and then click Next.
d. Type the fully qualified public domain name (your public DNS name) of
your server, click Next, and then click Finish.
e. When the wizard is completed, click Close.
4) Then you can access RWW to download Connection Manager or copy the file
from SBS server c:\ClientApps\Connection Manager\SBSPackage.exe. Please
save the sbspackage.exe file in VPN client computer. Then double-click
SBSPackage.exe to run it. After this file run the "connect to small
business server" will be created and you can use it to connect VPN to your
SBS server.
If we cannot resolve the issue after we perform the above steps, please
help me collect some information for further investigation:
1. Once the VPN connection is established, run command "ipconfig /all >
c:\ipconfig_sbs.txt" and "route print > c:\route_sbs.txt" on SBS, send the
files c:\ipconfig_sbs.txt and c:\route_sbs.txt to me at
v-terliu@xxxxxxxxxxxxx
2. Once the VPN connection is established, run command "ipconfig /all >
c:\ipconfig_client.txt" and "route print > c:\route_client.txt" on
problematic client, send the files c:\ipconfig_client.txt and
c:\route_client.txt to me at v-terliu@xxxxxxxxxxxxx
3. Do you install ISA server on SBS? What's the edition?
4. Do you get any VPN related event log on SBS and remote clients?
I hope these steps will give you some help.
Thanks and have a nice day!
Best regards,
Terence Liu(MSFT)
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| Thread-Topic: How to solve random VPN disconnection issue
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| From: =?Utf-8?B?Q2hyaXMgU3dpbm5leQ==?=
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| Subject: How to solve random VPN disconnection issue
| Date: Tue, 6 Nov 2007 15:06:00 -0800
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| Hi,
|
| We have a client with SBS 2003 and a couple of remote users that use a
| standard VPN conenctions (Windows XP and 2000). The connection on the
clients
| are set to never time out, but we have noted that the VPN connections
drop
| out randomly. Sometime the VPN connection will last a long time, other
times
| it will drop out afer minutes. I have also set the VPN connections on the
| client PCs to redial if the line is dropped, but this does not happen.
|
| The clients and the SBS server have ADSL connection that do not appear to
| drop connections. In fact, I can run a TS session direct from the clients
to
| the server without issue. I can't see anything obvious in the Event log
| either.
|
| Any one have an idea of what might be wrong here
|
.
- References:
- How to solve random VPN disconnection issue
- From: Chris Swinney
- How to solve random VPN disconnection issue
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