Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-31 Thread Luan Nguyen
Just a note on this thread, we got everything sorted out. There was a little asymmetric routing going on, but the great folks at HGC was very quick in helping us fix this. We had some problem with HGC support at the Hutch before, but they are great and fast now. At the other end in Johannesburg,

RE: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread chris burri
A pointer here: http://en.wikipedia.org/wiki/Bandwidth-delay_product Cheers Chris --- -= Amat Victoria Curam =- Date: Thu, 11 Jul 2013 10:04:52 -0400 Subject: File transfer speed between Hong Kong and Johannesburg, South Africa From: luan20...@gmail.com To: nanog@nanog.org Hello

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Mikael Abrahamsson
On Thu, 11 Jul 2013, Luan Nguyen wrote: Does anyone know what's the average speed for windows file transferring (SMB2) between Hong Kong and Johannesburg? Any guide on how to calculate/estimate this? Worst case would be that XP is involved, then you're going to be limited by xmodem-like

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Martin Hepworth
Probably quite nasty delays as anything over a few milliseconds delays really badly affects SMB around 90 ms it's just about usable and above 120 ms forget it. have a look at some of the WAN accelerator products esp Aryaka who'll be able to set you up in minutes with no capital outlay..

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Clayton Zekelman
It all depends on the air speed velocity of an unladen swallow, and varies if it is African or Eurpoean. In all seriousness, you need to know the speed and latency of the link before that question can be answered. At 10:04 AM 11/07/2013, Luan Nguyen wrote: Hello folks, Does anyone know

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Joe Loiacono
/community/blog/tcp-performance-and-mathis-equation ) Joe From: Luan Nguyen luan20...@gmail.com To: nanog@nanog.org Date: 07/11/2013 10:06 AM Subject:File transfer speed between Hong Kong and Johannesburg, South Africa Hello folks, Does anyone know what's

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Luan Nguyen
@nanog.org Date: 07/11/2013 10:06 AM Subject: File transfer speed between Hong Kong and Johannesburg, South Africa -- Hello folks, Does anyone know what's the average speed for windows file transferring (SMB2) between Hong Kong and Johannesburg? Any guide on how

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Warren Bailey
Look at your MTU on links.. Sent from my Mobile Device. Original message From: Luan Nguyen luan20...@gmail.com Date: 07/11/2013 10:16 AM (GMT-08:00) To: nanog@nanog.org Subject: Re: File transfer speed between Hong Kong and Johannesburg, South Africa Thanks guys. We do

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Luan Nguyen
luan20...@gmail.com Date: 07/11/2013 10:16 AM (GMT-08:00) To: nanog@nanog.org Subject: Re: File transfer speed between Hong Kong and Johannesburg, South Africa Thanks guys. We do have Riverbed Steelhead appliances at both end. According to calculation, maximum throughput can be attained

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Nick Hilliard
On 11/07/2013 18:14, Luan Nguyen wrote: We do have Riverbed Steelhead appliances at both end. According to calculation, maximum throughput can be attained is ~330KB/sec. With the Riverbed cold transfer, we should get ~600KB/sec. But I can only get ~250KB/sec with the Steelhead doing its stuff

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Nick Hilliard
luan20...@gmail.com Date: 07/11/2013 10:16 AM (GMT-08:00) To: nanog@nanog.org Subject: Re: File transfer speed between Hong Kong and Johannesburg, South Africa Thanks guys. We do have Riverbed Steelhead appliances at both end. According to calculation, maximum throughput can be attained

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread James Grace
Hey Luan, Here is a good guide that will help you optimise your throughput. As for knowing the average, it all depends on pipe size, network topology, end host configurations to even conjure a guess. http://bradhedlund.com/2008/12/19/how-to-calculate-tcp-throughput-for-long-distance-links/

RE: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Shaw, Matthew
AM To: Luan Nguyen Cc: nanog@nanog.org Subject: Re: File transfer speed between Hong Kong and Johannesburg, South Africa Honestly, this depends on what OS you are using. Anything prior to Win7 you are likely to suffer from the TCP stack. Add in anything weird like ICMP filtering, load

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Martin Hepworth
From: Luan Nguyen luan20...@gmail.com To: nanog@nanog.org Date: 07/11/2013 10:06 AM Subject: File transfer speed between Hong Kong and Johannesburg, South Africa -- Hello folks, Does anyone know what's the average speed for windows file

Re: File transfer speed between Hong Kong and Johannesburg, South Africa

2013-07-11 Thread Larry Sheldon
On 7/11/2013 10:32 AM, Clayton Zekelman wrote: It all depends on the air speed velocity of an unladen swallow, and varies if it is African or Eurpoean. In all seriousness, you need to know the speed and latency of the link before that question can be answered. At 10:04 AM 11/07/2013, Luan