ndt-users list created

[Jason Zurawski <>]

Hey Matt;

If not us, I am sure someone from MLab Ops can assist in testing.  The 
current deployed version (3.6.4) should be fine, the init scripts may 
need to be twiddled (I don't remember if they were set to be v4 only).

Thanks;

-jason

On 3/1/11 9:16 PM, Matt Mathis wrote:
> +Tiziana
>
> Thanks for the discussion on the web100 list!  Can you guys be ready
> to test NDT IPv6 on M-Lab when they get IPv6 connectivity?   I don't
> have an ETA yet, but real soon now I am sure.
>
> (FYI to everyone else) There was a web100 library patch (attached)
> from ~2008 to fix dual stack IPv6.  We failed to get it into a release
> somehow.
>
> Thanks,
> --MM--
> The best way to predict the future is to create it.  - Alan Kay
>
>
> On Tue, Mar 1, 2011 at 3:49 PM, Jason 
> Zurawski<>
>   wrote:
> > Hey Matt;
> >
> > Aaron Brown (cc'ed) will mail his patch to the discussion list ASAP.  We
> > haven't thoroughly tested this beyond a couple of users currently.
> >
> > Thanks;
> >
> > -jason
> >
> > On 3/1/11 3:27 PM, Matt Mathis wrote:
> > > Please send your library fix with a little summary to 
> > > .
> > >
> > > Thanks,
> > > --MM--
> > > -------------------------------------------
> > > Matt Mathis    Home/Cell:412.654.7529
> > >
> > > On Mon, Feb 28, 2011 at 2:52 PM, Jeremy 
> > > Palmer<>
> > >     wrote:
> > > > Fist thing to do is to make sure your server is actually listening on the
> > > > appropriate NDT ports on V6. See below examples.
> > > >
> > > > - This port for fakewww is listening on IPV6.
> > > > # netstat -anp | grep 7123
> > > > tcp        0      0 :::7123                     :::*
> > > > LISTEN      27107/fakewww
> > > >
> > > > - This port for web100srv is only listening on IPV4.
> > > > # netstat -anp | grep 3001
> > > > tcp        0      0 0.0.0.0:3001                0.0.0.0:*
> > > > LISTEN      27100/web100srv
> > > >
> > > > In the above example, I can connect to the NDT page over v6 but would not be
> > > > able to run a NDT test since web100srv/3001 is only listening on V4.
> > > >
> > > > Also, I believe there are at least two bugs related to IPV6 in the current
> > > > implementation of the PerfSonar toolkit (assuming you are running the 
> > > > toolkit).
> > > >
> > > > - The first bug appears to be a redirect issue to the toolkit homepage itself.
> > > > For example if I go to the IPV6 base URL of one of my PSToolkit boxes:
> > > > http://[2600:3000:2400::10]
> > > > I get an "Unable To Connect" error in FFox. I believe this is because its 
> > > > trying
> > > > to redirect to "/toolkit" with a IPV4 URL. I'm assuming Ffox wont follow a v4
> > > > redirect when accessed via a v6 URL (just a guess). The workaround is to use
> > > > /toolkit at the end of the v6 URL so it doesn't try to redirect:
> > > > http://[2600:3000:2400::10]/toolkit/
> > > >
> > > > - The second bug appears to be related to NDT and the web100 userland libs. My
> > > > issue is if I enable IPV6 in the WEB100SRV_OPTIONS in /etc/sysconfig/ndt, NDT
> > > > tests over V6 works fine, but when trying to run tests over v4 I get the
> > > > infamous "protocol error!". Switching NDT back to ipv4-only cures the error 
> > > > but
> > > > disables V6 testing. According to a response to my post on this issue, there 
> > > > is
> > > > an unsupported but fixed version of the web100 userland libs available:
> > > >
> > > > > I've got an web100 userland RPM with a bugfix that seems to fix this issue on
> > > > the hosts here. If you don't mind being a guinea pig, you can grab the RPM 
> > > > from
> > > > http://software.internet2.edu/branches/aaron-testing/rpms/i386/RPMS.main/web100_userland-1.7-4.el5.i386.rpm
> > > > . Install it by running "rpm -Uvh web100_userland-1.7-4.el5.i386.rpm" as root.
> > > > Then, restart NDT by running "/sbin/service ndt restart". In testing locally,
> > > > we've found that this new RPM seems to fix this "protocol error" issue on our
> > > > dual-stack hosts. Let us know if it works for you.
> > > >
> > > > Hope this helps!
> > > >
> > > > On 2/28/2011 6:59 AM, 
> > > >
> > > >  wrote:
> > > > > Hi all ,
> > > > >
> > > > > I have try to  using ipv6 address instead of a DNS name  and start fakewww ,
> > > > > web100srv -4 and web100srv -6,  But cann't  open the ndt site with ipv6 
> > > > > address.
> > > > >
> > > > > I have try to using the format http://[ipv6-addr]:port to connect my ndt 
> > > > > server
> > > > > site, But still can't connect .
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Am I missing anything ? any hint ?
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Thanks and best regards
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Matt
> > _______________________________________________
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