Bandwidth issues in the Sprint network

Wed Apr 9 16:01:44 UTC 2008

You can also use ttcp from the command line, useful if its cisco on both ends of the circuit.

sr01#ttcp
transmit or receive [receive]: transmit
Target IP address: 1.1.1.1
calculate checksum during buffer write [y]: 
perform tcp half close [n]: 
send buflen [32768]: 
send nbuf [2048]: 
bufalign [16384]: 
bufoffset [0]: 
port [5001]: 
sinkmode [y]: 
buffering on writes [y]: 
show tcp information at end [n]: 

ttcp-t: buflen=32768, nbuf=2048, align=16384/0, port=5001  tcp  -> 1.1.1.1

sr02#ttcp     
transmit or receive [receive]: 
receive packets asynchronously [n]: 
perform tcp half close [n]: 
receive buflen [32768]: 
bufalign [16384]: 
bufoffset [0]: 
port [5001]: 
sinkmode [y]: 
rcvwndsize [32768]: 
ack frequency [0]: 
delayed ACK [y]: 
show tcp information at end [n]: 

ttcp-r: buflen=32768, align=16384/0, port=5001
rcvwndsize=32768, delayedack=yes  tcp

---- Michael Holstein <michael.holstein at csuohio.edu> wrote: 
> 
> 
> > Does anyone know of bootable Linux CD with iperf on it?
> >   
> 
> Knoppix STD (security tools distro)
> 
> http://www.knoppix-std.org/tools.html
> 
> Cheers,
> 
> Michael Holstein
> Cleveland State University