perfSONAR User Q&A and Other Discussion

["Florio, Christopher N" <>]

That's great for off-campus testing, however, we use these boxes to help troubleshoot on-campus performance.  For instance, having one in a vlan with front-ended by a firewall vs one right off of our core routers can help us determine where problems are.  Just pointing to an off-campus NDT or speedtest host doesn't do the job these boxes are currently doing for us.

On Apr 18, 2017, at 11:57 AM, Brian Tierney <> wrote:

I'd also like to point out that we suggest folks point their users to 'measurement lab' as an alternative to NDT on perfSONAR:

http://docs.perfsonar.net/FAQ.html#q-what-happened-to-the-ndt-and-npad-tools

On Tue, Apr 18, 2017 at 8:50 AM, Andrew Lake <> wrote:

Hi,

To clarify, NDT was not removed from the host if it was already installed when you upgraded an existing host to 4.0. It is not shown on the main toolkit web page but the package should still be installed.  A new install will not have NDT though. 

As is being noted in this email thread, the firewall rules no longer include the NDT ports. You should be able to add them back with the following (and it should stick between future perfSONAR updates and reboots as well):

iptables -I INPUT 1 -m state --state NEW -m tcp -p tcp --dport 3001:3003 -j ACCEPT 

iptables -I INPUT 1 -m state --state NEW -m tcp -p tcp --dport 7123 -j ACCEPT 

iptables -I INPUT 1 -m state --state NEW -m tcp -p tcp --dport 843 -j ACCEPT 

/etc/init.d/iptables save

ip6tables -I INPUT 1 -m state --state NEW -m tcp -p tcp --dport 3001:3003 -j ACCEPT 

ip6tables -I INPUT 1 -m state --state NEW -m tcp -p tcp --dport 7123 -j ACCEPT 

ip6tables -I INPUT 1 -m state --state NEW -m tcp -p tcp --dport 843 -j ACCEPT 

/etc/init.d/ip6tables save

Above should work for most people, if you have other custom stuff in the rules, you want to tweak.

Thanks,

Andy

On April 18, 2017 at 11:31:53 AM, Florio, Christopher N () wrote:

Check and see if you're running the version 4 toolkit version.  Apparently NDT has been removed from this.  I've got one running 3.5.1.7 and that has not had ndt removed yet.  

On Apr 18, 2017, at 10:47 AM, Holtzman, Thomas <> wrote:

Hello,

 

I was trying to access the ndt bandwidth test using my perfsonar. I used to access it at http://ndtserver-ft.datacom.upmc.edu:7123/, but it now no longer works. How do I get it back?

 

Thanks,

Thomas Holtzman
Data Communications Specialist - Associate
Information Services Division
Network Operations Center
3600 Forbes Ave at Meyra
Pittsburgh PA, 15213

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Brian Tierney, http://www.es.net/tierney
Energy Sciences Network (ESnet), Berkeley National Lab
http://fasterdata.es.net