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RDP sessions dropping off regularly

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Last Modified: 2013-11-21
We have 2 offices.
Linked by a Cisco ASA 5505 and a 5510 site to site vpn
Users in office a RDP to a TS in site B for accounts.
However the last few weeks the RDP session gets dropped 10-20 times a day
Even if it's in use. It takes 5/6 seconds and comes back up again more often than not.

i've spoken to BT and there are no line issues
I've spoken to firewall people and they say no issue
VPN isn't dropping. So it appears to be only the RDP sessions.

It's a W2k3 server and XP clients.

Previous support incident raised resulted in the follwoing being added to all machines in site A

reg.exe add HKLM\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters /v KeepConn /t REG_DWORD /d 65535 /f
reg.exe add HKLM\SYSTEM\CurrentControlSet\Services\netbt\Parameters /v SessionKeepAlive /t REG_DWORD /d 4294967295 /f
reg.exe add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\BITS /v UseLmCompat /t REG_DWORD /d 0 /f


But that was a looooong time ago.
It's only of late this has been playing up.

Where do I start?

I'm going on holiday for a couple of weeks and set a ping site A -t to a text file
so I can check it when I get back. But if you had any pointers I could look at on my return.
That wouldbe great
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Will SzymkowskiSenior Solution Architect
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Most Valuable Expert 2015
Top Expert 2015

Commented:
Have you tried checking the event viewer to see if you can find anything related to this issues? Does this happen if you use a different Windows Profile for remoting in with?

If you do a "tracert" for command prompt are any of the hops dropping? Also, have you tried to do a ping -t 192.x.x.x to see if you have consistent latency?
Rick HobbsRETIRED
CERTIFIED EXPERT
Top Expert 2006

Commented:
You may want to try a hostmonitor to monitor the RDP availability rather than just using ping.  Whats Up Gold is excellent for that use but is not free.  There are some free ones that also do the job.
I've had a problem like this at a customer site. Took me days to figure out - turned out to a network teaming issue with the NIC cards on my servers. I recommend a monitoring tool that can look end to end - at the network, server, and application - see http://www.eginnovations.com/web/terminalservermonitor.htm

Author

Commented:
I'll have a look
Ping didnt drop once
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Commented:
NA

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