May 2013 - Test - lists.nanog.org

Andros Island Connectivity?
by Aaron C. de Bruyn 01 May '13

01 May '13

I just had a client drop an interesting requirement on me. They are on Andros Island (Bahamas) for about a year. I'm working on getting an exact address from the adminisphere above me, but all I've been told so far is they are 'near the naval base'. They just called and said "We need internet access yesterday". None of the people on-site are technical, and all their data is accessed via RDP on a server in the United States. Having never been there, I have no idea if it's like downtown San Francisco where the internet grows on trees, or if it's like the Sahara desert which might require dragging your own fiber in on camelback... Does anyone have pointers on who to talk to or how I can get them internet access? -A

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Re: Andros Island Connectivity?
by alejandroacostaalamo＠gmail.com 01 May '13

01 May '13

Hi, Please also note that modern VSAT hubs (idirect, viasat) -some better than other- can emulate SCPC. They also support QoS, tcp spoofing and many other nice features. Regards, ------Original Message------ From: Rob Seastrom To: TR Shaw Cc: Aaron C. de Bruyn Cc: NANOG mailing list Subject: Re: Andros Island Connectivity? Sent: Apr 30, 2013 8:43 PM Protracted discussion (and promotion) has glossed over one key point: >> None of the people on-site are technical, and all their data is accessed >> via RDP on a server in the United States. They will not be happy with VSAT latency (typically 700ms though physics says you can never do better than 550, and that's for the space segment alone) if they are running RDP, VNC, Citrix, or similar technologies. Sorry for being a buzzkill, Warren. :) -r Este mensaje ha sido enviado gracias al servicio BlackBerry de Movilnet

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Re: Andros Island Connectivity?
by Joel M Snyder 30 Apr '13

30 Apr '13

> > Protracted discussion (and promotion) has glossed over one key point: > >>> None of the people on-site are technical, and all their data is accessed >>> via RDP on a server in the United States. > > They will not be happy with VSAT latency (typically 700ms though > physics says you can never do better than 550, and that's for the > space segment alone) if they are running RDP, VNC, Citrix, or similar > technologies. Sorry for being a buzzkill, Warren. :) Actually, Citrix (in particular) works quite well over satellite latencies. The network project I'm working on right now is wrapping up an app rollout to about 100 countries, many of which we can only reach via VSAT. Testing showed that Citrix performance is much better for AJAX-y web apps than pure HTTP. Citrix has a bunch of intelligence built-in specifically to deal with issues related to high-latency/low-bandwidth circuits, including local mouse, local echo, click/movement aggregation into large packets, and of course compression-before-encryption. It's not quite Memorex, but it's very usable. I'd be happy to share the data with anyone who is interested; I also showed that F5 Big-IP load balancers can make really horrible ERP apps (*ahem* Oracle eBusiness *cough* *cough* *cough*) work a lot better as well, if you decide not to use Citrix. jms -- Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719 Senior Partner, Opus One Phone: +1 520 324 0494 jms(a)Opus1.COM http://www.opus1.com/jms

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