Bandwidth issues in the Sprint network

Thu Apr 10 17:18:05 UTC 2008

Good idea, but the other side doesn't have a Cisco box.

Frank

-----Original Message-----
From: rcheung at rochester.rr.com [mailto:rcheung at rochester.rr.com] 
Sent: Wednesday, April 09, 2008 11:02 AM
To: Michael Holstein
Cc: frnkblk at iname.com; nanog at merit.edu
Subject: Re: Bandwidth issues in the Sprint network

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