perfSONAR User Q&A and Other Discussion

[Gustavo Neves Dias <>]

Hi Szymon, 

Recently, I discover that our connection have a MTU problem (less than 1500 
bytes) and I already contact our network engineering to fix it. 

Furthermore, I installed SSL certificate in the server and "like a miracle" 
the web interface is accessible by https://ps-bw.sdmz.rnp.br/toolkit/. 

So, the owamp (latency) tests are OKay. But, the bwctl (bandwidth) tests are 
still with problem I believe that because MTU problem isn't fix yet. 

Thanks. 
Best regards. 
Gustavo Dias. 

-- 
Coordenador de P&D | R&D Coordinator 
Gerência de Comunidades e Aplicações Avançadas | Management of Advanced 
Applications and Communities 
Diretoria de Pesquisa e Desenvolvimento | Board of Research and Development 
RNP - Rede Nacional de Ensino e Pesquisa | Brazilian National Research and 
Educational Network 
http://www.rnp.br | +55 (21) 2102-9689 | Skype: gnevesdias 
Rio de Janeiro - RJ - Brasil | E-mail: 

 


From: "Szymon Trocha" 
<>
 
To: "Gustavo Neves Dias" 
<>
 
Cc: 

 
Sent: Tuesday, January 17, 2017 11:39:45 AM 
Subject: Re: [perfsonar-user] problems with perfSONAR 3.5.1 post-installation 

W dniu 13.01.2017 o 12:10, Gustavo Neves Dias pisze: 



Hi Szymon, 

I think the ntpd service is not a problem: 

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
= = = = = = 
[root@ps-bw ~]# ntpq -p 
remote refid st t when poll reach delay offset jitter 
==============================================================================
 
+a.st1.ntp.br .ONBR. 1 u 742 1024 377 46.977 5.186 7.867 
*b.st1.ntp.br .ONBR. 1 u 1067 1024 377 25.970 0.098 4.396 
-c.st1.ntp.br .ONBR. 1 u 610 1024 377 66.986 12.112 4.282 
+d.st1.ntp.br .ONBR. 1 u 121m 1024 300 7.326 -4.320 21.633 
-a.ntp.br 200.160.7.186 2 u 523 1024 377 46.903 6.063 4.234 
-b.ntp.br 200.160.7.186 2 u 146 1024 377 0.830 3.735 5.131 
-c.ntp.br 200.160.7.186 2 u 495 1024 377 19.830 5.420 3.654 
gps.jd.ntp.br .INIT. 16 u - 1024 0 0.000 0.000 0.000 
eth-0.nms-rlat. .INIT. 16 u - 1024 0 0.000 0.000 0.000 
eth-1.nms-rlat. .INIT. 16 u - 1024 0 0.000 0.000 0.000 
eth-1.nms-rlat. .INIT. 16 u - 1024 0 0.000 0.000 0.000 
nms-rlat.newy.n .INIT. 16 u - 1024 0 0.000 0.000 0.000 
chronos.es.net .INIT. 16 u - 1024 0 0.000 0.000 0.000 
saturn.es.net .INIT. 16 u - 1024 0 0.000 0.000 0.000 
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 
= = = = = = 





Hi Gustavo, 

I was wondering if you managed to run successfull tests after your ntp 
stabilized? 


Wrt the other problem of web interface could you check the SELinux settings 
in /etc/sysconfig/selinux. If it is set to enforcing, consider setting to 
permissive and rebooting and check again? 

Regards, 
-- 
Szymon Trocha

Poznań Supercomputing & Networking Center
Tel. +48 618582022 ::: http://noc.pcss.pl