perfSONAR User Q&A and Other Discussion

[Daniel Manzo <>]

Hi Ivan,

 

Sorry for not responding – our firewall is allowing the correct rules/exceptions for the new IP and tests do not run on this interface. I am able to choose my secondary interface on the web service, but no results show up. I cannot ping my default internet gateway, but can ping other local servers. I think I may just have to set up the secondary interface on another subnet.

 

Thanks,

Dan

 

From: Garnizov, Ivan (RRZE) [mailto:]
Sent: Friday, October 14, 2016 7:48 AM
To: Daniel Manzo; perfsonar-user
Subject: RE: two NICs on same subnet

 

Hi Dan,

 

“. The new interface has an IP on the same subnet as the primary interface, if that matters at all.”

Here in the doc http://docs.perfsonar.net/manage_dual_xface.html#ip-addressing-strategy you will see some extra configuration, which is needed to make the linux system distinguish between the interfaces.

Also note that: “ It is recommended that you assign each interface to a different subnet. ” {from documentation}

 

Could you also try to setup a bwctl or owamp test from the secondary interface?

Have a look at the running processes and see how (about the options with which) the ping test is executed. This might give us a clue on what is wrong.

 

And of course please make sure that on the external FW you have the correct exceptions/rules for the new IP.

 

Regards,

Ivan Garnizov

 

GEANT SA1T2: pS deployments GN Operations

GEANT SA2T3: pS development team

GEANT SA3T5: eduPERT team

 

 

 

From: [] On Behalf Of Daniel Manzo
Sent: Donnerstag, 13. Oktober 2016 21:11
To: perfsonar-user
Subject: [perfsonar-user] two NICs on same subnet

 

Hi all,

 

My current perfSONAR setup is an HP server with 8 GB of RAM and an OS of RHEL 6.8. I installed using the CentOS bundle method with perfsonar-toolkit. My perfSONAR server is behind a firewall, and we have added another network interface in order to split our tests for bandwidth and latency. After setting up a normal ping test on the new interface via the webpage, I am not seeing any results at all being populated. The new interface has an IP on the same subnet as the primary interface, if that matters at all. I tried following the instructions on the “Configuring a Host with Multiple Interfaces” page, but it did not work. Any and all help is greatly appreciated.

 

Best regards,

 

Dan Manzo