Re: [Lksctp-developers] Network emulation / Transmit list ordering

[Neil H. <nh...@tu...>]

On Fri, Dec 23, 2005 at 08:57:20AM -0700, Mark Butler wrote:
> Is anyone aware of a network / link emulator to use to test protocol 
> stacks like SCTP under real world conditions (loss, delay, etc.)?  
> Preferably one that plugs into the network stack of a single machine?  I 
> am considering writing a simple one that compiles into the output path 
> of LKSCTP to simulate various conditions loopback or LAN testing hardly 
> exercises.
> 
I'm not aware of any projects explicitly, but I've written small simulators
along those line for various companies using the TAP netlink interface, and some
redirector code.  Depending on your needs, its something that can be thrown
together in a few days.

> Also, is anyone aware of any reason why the transport transmitted lists 
> are not or cannot trivially be kept in implicit TSN order?  It is very 
> important to exit early when doing SACK scans on high BDP associations.  
> Otherwise overhead will go as O(N^2) in the window size. 
> 
If your referring to the send queue for a given association here, I think they
are kept in TSN order.
Neil

> - Mark
> 
> 
> -------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
> for problems?  Stop!  Download the new AJAX search engine that makes
> searching your log files as easy as surfing the  web.  DOWNLOAD SPLUNK!
> http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
> _______________________________________________
> Lksctp-developers mailing list
> Lks...@li...
> https://lists.sourceforge.net/lists/listinfo/lksctp-developers