[AusNOG] Looking for someone who has experience with Nextgen VPLS

[Mark Smith]

Hi,

On Mon, 4 Apr 2011 19:07:16 +0800
"Greg M" <gregm at servu.net.au> wrote:

> Hi Noggers,
> 
>  
> 
<snip>

>  
> 
> Happy to receive responses on or off-list, and we are happy to pay for
> someone either locally in Sydney or in Perth to help diagnose this - as a
> lot of money is being burnt on this circuit that is not providing consistent
> speeds. We have raised these issues to both Nextgen and Telstra and they are
> pointing the finger at our internal network.
> 
>  

Sounds like you might have TCP window problems due to the large
bandwidth delay products. If that is the case, the following should
help -

Tuning hosts for network performance
http://www.linuxsa.org.au/meetings/2008-09/linuxsa-network-performance-slides.pdf

TCP performance and the Web100 project
http://www.linuxsa.org.au/meetings/2003-09/tcpperformance.screen.pdf

http://www.psc.edu/networking/projects/tcptune/

Regards,
Mark.