topic WAAS RDP Optimization in Application Networking

WAAS RDP Optimization

dinesh.thathanath — Tue, 01 Jun 2010 17:50:26 GMT

Has anybody been able to see any optization on Microsoft RDP (Port 3389)?.

Is RDP traffic compressed/encrypted?.

Any support appreciated.

Cheers,

Dinesh

Re: WAAS RDP Optimization

Eric Rose — Tue, 01 Jun 2010 18:15:58 GMT

Yes I have seen huge saving when the default encryption and compression was disables for the MS RDP protocols on port 3389.

Thanks

Eric

Re: WAAS RDP Optimization

Jan Rockstedt — Wed, 02 Jun 2010 09:38:08 GMT

Hi,

O yes the resond is very fast.

Jan

Re: WAAS RDP Optimization

dinesh.thathanath — Wed, 02 Jun 2010 11:14:27 GMT

Thanks Eric, Jan.

Can someone tell me how do I disable compression/encryption for RDP on the client side?

Additionally my CM Optimzation suggests that my original traffic was 10GB excluding passthrough and the optimized traffic is close to 11GB. Did anyone see such kind of data where optimized data is more than original?

-Dinesh

Re: WAAS RDP Optimization

Eric Rose — Wed, 02 Jun 2010 14:24:38 GMT

Hi Dinesh,

Here is a document that talks about the process.

http://www.cisco.com/en/US/solutions/collateral/ns340/ns517/ns224/ns377/deployment_guide_c07-493981.html#wp9000716

also when you "optimize" compressed data the output is actually more (larger) data.

so when you see the optimize traffic is more than the originial traffic, this is a sign that the original traffic is already compressed or encrypted.

for example when you compress a jpg the result is larger.

Thanks,

Eric

P.S. please mark this question as answered with a 5 if this answers your question.

Re: WAAS RDP Optimization

dinesh.thathanath — Wed, 02 Jun 2010 17:00:50 GMT

Many Thanks Eric.

Cheers,

Dinesh

Re: WAAS RDP Optimization

dinesh.thathanath — Thu, 03 Jun 2010 11:37:24 GMT

Thanks ERIC.

To summarize if I do the following things, will RDP be optimized on a WinXP machine?

1. Disabling Compression on the RDP File

Step 1. Open the RDP connection (.rdp) file in Notepad.

Step 2. Change the line compression:i:1 to compression:i:0.

Step 3. Save the file.

2. Disabling Encryption

Registry keys:

• Set HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\MinEncryptionLevel to 1.

• Create HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\SecurityLayer as a DWORD value and set it to 0.

• Restart PC.

Is this the same procedure followed?

We tried disabling the compression with no luck. Will try doing the step 2 as well.

Thanks,

Dinesh

Re: WAAS RDP Optimization

Eric Rose — Thu, 03 Jun 2010 13:12:23 GMT

yes from what I can find

step 1 is done on the client.

step 2 is done on the RDP server.

also note if your RDP terminal server is a windows xp 32 bit version you will need to apply the hot fix from MSFT.

http://support.microsoft.com/default.aspx?scid=kb;EN-US;956072

Re: WAAS RDP Optimization

johng231 — Wed, 09 Jun 2010 00:54:31 GMT

Do you recommend setting the RDP policy to Full TFO after you have disabled compression/encryption on the client side?

Re: WAAS RDP Optimization

Eric Rose — Wed, 09 Jun 2010 12:58:05 GMT

Yes, if you modify the default setting for RDP. In order to gian the benefits or disabling compression/encryption, you have to modify the default policy to full optimization.

Thanks.

Re: WAAS RDP Optimization

dinesh.thathanath — Wed, 09 Jun 2010 16:50:53 GMT

Finally got the RDP optimization working.

The terminal server was overriding the compression settings done on Default.RDP file. Once the seetings on Server was done for disabling encryption and compression, everything just worked great. Many thanks to you guys.

Any idea even after 80% optimization, why on the following output Bytes written for optimized traffic is more than Bytes written for original traffic?

Connection Id: 14800

Peer Id: 00:21:5e:73:0e:cf

Connection Type: EXTERNAL SERVER

Start Time: Wed Jun 9 11:21:36 2010

Source IP Address: 192.168.120.199

Source Port Number: 3600

Destination IP Address: 192.168.1.174

Destination Port Number: 3389

Application Name: Remote-Desktop

Classifier Name: MS-Terminal-Services

Map Name: basic

Directed Mode: FALSE

Preposition Flow: FALSE

Policy Details:

Configured: TCP_OPTIMIZE + DRE + LZ

Derived: TCP_OPTIMIZE + DRE + LZ

Peer: TCP_OPTIMIZE + DRE + LZ

Negotiated: TCP_OPTIMIZE + DRE + LZ

Applied: TCP_OPTIMIZE + DRE + LZ

Accelerator Details: None

Original Optimized

-------------------- --------------------

Bytes Read: 5818686 58462

Bytes Written: 50869 1075183

Total Reduction Ratio: 80.686%

Any thoughts?

Thanks,

Dinesh

Re: WAAS RDP Optimization

Eric Rose — Wed, 09 Jun 2010 19:20:34 GMT

Original Optimized

-------------------- --------------------

Bytes Read: 5818686 58462

Bytes Written: 50869 1075183

These number are based in each direction from my understansing.

from the reference guide.

Number of bytes that have been read and written on the original (incoming) side and the optimized (outgoing) side.

you should look at the DRE statistics for this connection to get the reduction values in both directions.

Re: WAAS RDP Optimization

dinesh.thathanath — Thu, 10 Jun 2010 03:40:54 GMT

Yes thats right Eric.

But optimized traffic cannot be more than original isn't it?. The Ref guide doesnt really talk about this in detail.

-Dinesh