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Slow remote deslktop from China , solution ?

Posted on 2011-10-22
Medium Priority
Last Modified: 2013-11-21
Hello .,
We have an office in China that connects with remote desktop to our server in Sweden .
Now has China such firewalls that slow down everything .
Is there a solution besides VPN ?

Best regards
Question by:carlsberg112
  • 2
LVL 12

Expert Comment

ID: 37011301
This is a problem with China. They still do have the great firewall of China, but that isn’t your greatest problem. It is simply geography and physics.

You are, as the crow flys, 4200 miles away from China. But a traceroute would tell you what countries your path actually takes.

Looking at CenturyLink’s statistics (https://kai02.centurylink.com/PtapRpts/Public/BackboneReport.aspx) Between TSUEN WAN (HGK), HK and FRANKFURT AM MAIN (FRN), GE, they report 232ms RTTs. That’s pretty huge, a quarter-second time elapsed between transmission and reception. And for real-time data like RDP, that is borderline unusable. Furthermore, who knows what the great firewall of China does to that RTT.

Have you considered the possibility of deploying a MPLS circuit between the two locations? I’ve seen some EXCELLENT results between Sydney and Northern Germany with a current client who has about 150 users on Citrix with hosted desktops in Germany who struggled with 300ms+ delays. Now, MPLS isn’t going to solve the physics problem, but at least by getting off the public internet and traveling on private infrastructure which is fully managed from end to end with SLAs, your RTTs will become much more stable and reliable.

To your question about VPN. Do mean encapsulating their RDP traffic inside a VPN tunnel? If so, you will in fact ONLY make the situation worst, as you will have two devices in the middle encapsulating and encrypting packets and then reversing the process on the other side.

Heck, even in my own lab environment, I have seen a marked degradation in the RDP protocol when passed through a hardware-based VPN tunnel. (Of course, I had the Desktop Experience enabled and I was pulling through an Aero desktop.)

Author Comment

ID: 37011687
Hello thanks for the awnser ,

About the MPLS , how to do that ? you have a good starting point , meaning site with how to ?
VPN i know , it just slows it down ..

LVL 12

Accepted Solution

Sommerblink earned 2000 total points
ID: 37011726
MPLS, as I define it (there are others, and really its a packet tagging standard), is a service that you can order from your data line provider (BT, ATT, Qwest.. really any large international telecommunications provider) where you have a 'private' data circuit located at both locations (Sweden and China) and inbetween these two sites is a very large, very private IP network that BT or ATT or Qwest owns and/or operates and has guarenteed performance SLAs throughout the entire distance that the data must travel.



http://www.centurylink.com/business/products/special-offers/mpls.html (Used to be Qwest, I still consider it Qwest :))

I hope this helps a bit, but like I said, don't expect a miracle. Geography and physics are still going to impact performance considerably, but at least you're not going to be passing the traffic over the unmanageable Internet.

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