ndt-users list created

[Carlos Vicente <>]

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