ndt-users list created

[Richard Carlson <>]

Hi Carlos;

I believe this bug is fixed in 1.7, but I'll need to review things to  
verify this.  What type of error message do you get when you try using  
a IPv6 client?

Rich

On Apr 21, 2009, at 10:45 AM, Carlos Vicente wrote:

> The other question I have is: isn't web100_userland-1.7 supposed to  
> have
> the v6 bug fixed?  Running without '-4' does not work at all.
>
> What do I need to tweak to make tests over IPv6 work?
>
> Thanks,
>
> cv
>
>
> > Carlos Vicente wrote:
> > > Hi Rich and others,
> > >
> > > I just installed NDT here at UO.
> > >
> > > I'm running with:
> > >
> > > /usr/local/sbin/web100srv -a --snaplog --tcpdump -4
> > >
> > > The problem is that I'm getting a protocol error when running the  
> > > S2C
> > > test (this is from my Ubuntu desktop machine):
> > >
> > > # sudo web100clt -4 -l -n netspeed.uoregon.edu
> > > Testing network path for configuration and performance problems  --
> > > Using IPv4 address
> > > Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
> > > checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
> > > running 10s outbound test (client to server) . . . . .  901.99 Mb/s
> > > Protocol error!
> > > S2C throughput test FAILED!
> > > Protocol error!
> > >
> > > This happens with some clients and not with others.  Testing with a
> > > laptop running MS Vista, using Firefox, I get no errors.
> > >
> > > Here are the different versions of things on the server:
> > >
> > > RedHat AS 5.3
> > > Linux kernel 2.6.20-10.3web100smp
> > > ndt 3.5.0
> > > web100_userland-1.7
> > > javac 1.6.0_13
> > >
> > > I tried disabling iptables on both the server and the client, but  
> > > that
> > > does not fix it.
> > >
> > > I can provide a pcap file of a failed test, captured on the client
> > > machine, in case that helps.
> > >
> > > Any help greatly appreciated.
> > >
> > > = 
> > > ====================================================================
> > > Carlos Vicente                  Tel    :  +1(541) 346-1763
> > > Network Engineer                Fax    :  +1(541) 346-4397
> > > Information Services            PGP ID :  8623D99C
> > > 1212 University of Oregon
> > > Eugene,OR  97403-1205

Richard Carlson

1000 Oakbrook Dr
Ann Arbor, MI  48104

P: 734-352-7043
C: 630-251-4572