Is there a tool to do that end to end? Path MTU discovery tool? We use GRE/IPSEC with a WS-IPSEC 3 setting the tunnel to MTU 1400 with MSS = 1360 both end. The steelhead set to 1400 MTU as well since I was told the steelhead will set the DF bit. Steelhead log doesn't show timeout, unable to connect/ retry or anything to suggest drop packets though.
Thanks. Regards, -Luan On Thu, Jul 11, 2013 at 1:36 PM, Warren Bailey < wbai...@satelliteintelligencegroup.com> wrote: > 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 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 for 500M file so plenty > of time for whatever to kick in. Iperf and netperf show great results > though. > I guess I will be sampling results hourly for comparison. > > Regards, > > -Luan > > > On Thu, Jul 11, 2013 at 11:37 AM, Joe Loiacono <jloia...@csc.com> wrote: > > > The maximum you can expect is: > > > > Rate < (MSS/RTT)*(1 / sqrt(p)) where p is the probability of packet loss. > > > > Credit: Mathis, Semke, Mahdavi & Ott in Computer Communication Review, > > 27(3), July 1997, titled The macroscopic behavior of the TCP congestion > > avoidance algorithm. ( > > > http://www.infoblox.com/community/blog/tcp-performance-and-mathis-equation > ) > > > > Joe > > > > [image: Inactive hide details for Luan Nguyen ---07/11/2013 10:06:19 > > AM---Hello folks, Does anyone know what's the average speed for wi]Luan > > Nguyen ---07/11/2013 10:06:19 AM---Hello folks, Does anyone know what's > the > > average speed for windows file transferring > > > > 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 transferring > > (SMB2) between Hong Kong and Johannesburg? > > Any guide on how to calculate/estimate this? > > > > Thanks. > > > > Regards, > > > > -Luan > > > > >