RCP and RDP intermittant connection problems

I have a very strage Windows 2003 issue which is manifesting itself in
failure of RDP and RCP traffic interimittanty.

I have failing AD replication and am unable to get an RDP session to the
affected servers.

A reboot of the DC/server clears the problem for around 2 days then it
occurs again. During the period when its working AD replication and terminal
services works fine.

I am able to ping the machine fine from any client and have also setup RCP
client/server over the affected WAN link, which tests out fine.

Note all these services work fine when on the LAN and only intermittantly
over the WAN.

WAN is a windows 2000 VPN server.

Default gateway of the DC is the VPN server.

Also, I cannot connect to other windows 2000 DCs on the WAN using ADUC - RPC
errors.

I have run Ethereal and tested trying to get and RDP terminal sessions, I
receive a TCP out-of-order after the first few packets.

RobWUK wrote:
> I have a very strage Windows 2003 issue which is manifesting itself in
> failure of RDP and RCP traffic interimittanty.
>
> I have failing AD replication and am unable to get an RDP session to the
> affected servers.
>
> A reboot of the DC/server clears the problem for around 2 days then it
> occurs again. During the period when its working AD replication and
> terminal services works fine.
>
> I am able to ping the machine fine from any client and have also setup RCP
> client/server over the affected WAN link, which tests out fine.
>
> Note all these services work fine when on the LAN and only intermittantly
> over the WAN.
>
> WAN is a windows 2000 VPN server.
>
> Default gateway of the DC is the VPN server.
>
> Also, I cannot connect to other windows 2000 DCs on the WAN using ADUC -
> RPC errors.
>
> I have run Ethereal and tested trying to get and RDP terminal sessions, I
> receive a TCP out-of-order after the first few packets.

Sounds like a memory leak affecting the Remote Procedure call subsystem.
Look into that. Also,

186645 - Troubleshooting RDP Client Connection Problems
http://support.microsoft.com/?kbid=186645


--
Todd J Heron, MCSE
Windows Server 2003/2000/NT; CCA
----------------------------------------------------------------------------
This posting is provided "as is" with no warranties and confers no rights

Note I meant RPC (not rcp - typo)

I can telnet to machine on 3389, I can view shares using net view on the
server over the WAN and can get and RDP connection on the LAN to the server.

If I look at netstat whilst trying to establish the connection I see an
entry for my client, with TCP - ESTABLISHED.

The RDP problem occurs only when the replication etc is failing, ie RPC
failures, but it is replicating locally ok.

Restarting the server resolves this, which makes me think how can that be
related to the WAN? I have checked all routing etc and can see no issues
there as ICMP, netbios etc work ok over it.

If it is an RPC memory leak do you think I should raise this is MS directly?

"Todd J Heron" wrote:

> RobWUK wrote:
> > I have a very strage Windows 2003 issue which is manifesting itself in
> > failure of RDP and RCP traffic interimittanty.
> >
> > I have failing AD replication and am unable to get an RDP session to the
> > affected servers.
> >
> > A reboot of the DC/server clears the problem for around 2 days then it
> > occurs again. During the period when its working AD replication and
> > terminal services works fine.
> >
> > I am able to ping the machine fine from any client and have also setup RCP
> > client/server over the affected WAN link, which tests out fine.
> >
> > Note all these services work fine when on the LAN and only intermittantly
> > over the WAN.
> >
> > WAN is a windows 2000 VPN server.
> >
> > Default gateway of the DC is the VPN server.
> >
> > Also, I cannot connect to other windows 2000 DCs on the WAN using ADUC -
> > RPC errors.
> >
> > I have run Ethereal and tested trying to get and RDP terminal sessions, I
> > receive a TCP out-of-order after the first few packets.
>
> Sounds like a memory leak affecting the Remote Procedure call subsystem.
> Look into that. Also,
>
> 186645 - Troubleshooting RDP Client Connection Problems
> http://support.microsoft.com/?kbid=186645
>
>
> --
> Todd J Heron, MCSE
> Windows Server 2003/2000/NT; CCA
> ----------------------------------------------------------------------------
> This posting is provided "as is" with no warranties and confers no rights
>
>