perfSONAR User Q&A and Other Discussion

[Andrew Lake <>]

/etc/init.d/bwctld restart
/etc/init.d/owampd restart


Thanks,
Andy


On Jan 2, 2015, at 1:33 PM, Zhi-Wei Lu 
<>
 wrote:

> Thanks Andrew,
> 
> I have modified the config file with srcnode <ip-of-eth1>:861 in 
> /etc/owampd/owampd.conf 
> and I also added srcnod <ip-of-eth0>:4823 for /etc/bwctl/bwctl.conf
> 
> I am not quite sure which script(s) I should use to restart the daemon 
> processes?  I am getting errors
> 
> /etc/init.d/perfsonarbuoy_owp_master restart
> Conf::must_get_val(ATTR=>NODE, ) undefined, called from 
> /opt/perfsonar_ps/perfsonarbuoy_ma/bin/powmaster.pl:154
> Conf::must_get_val(ATTR=>NODE, ) undefined, called from 
> /opt/perfsonar_ps/perfsonarbuoy_ma/bin/powmaster.pl:154
> Conf::must_get_val(ATTR=>NODE, ) undefined, called from 
> /opt/perfsonar_ps/perfsonarbuoy_ma/bin/powmaster.pl:154
> Couldn't start perfSONAR-BUOY OWAMP Measurement Service
> 
> Thank you for your help
> 
> 
> Zhi-Wei Lu
> IET-CR-Network Operations Center 
> University of California, Davis
> (530) 752-0155
> 
> -----Original Message-----
> From: Andrew Lake 
> [mailto:]
>  
> Sent: Friday, January 02, 2015 7:33 AM
> To: Zhi-Wei Lu
> Cc: 
> ;
>  Daniel Doyle
> Subject: Re: [perfsonar-user] tips for One way latency and bw test on 
> separate NICs on perfSonar 3.4rc2
> 
> Hi,
> 
> If you only want to accept OWAMP connections (like those initiated by 
> powstream) on one of the ports you can try editing /etc/owampd/owampd.conf 
> and set "srcnode <ip-of-eth1>:861". Replace <ip-of-eth1> with the IP 
> address of eth1. That should cause OWAMP to only listen on eth1 instead of 
> all interfaces. I haven't actually tried it but in theory that should work.
> 
> Thanks,
> Andy
> 
> 
> On Dec 28, 2014, at 3:34 PM, Zhi-Wei Lu 
> <>
>  wrote:
> 
>> Hi all,
>> 
>> I am reviving my old thread as I am progressing more on this TWO NICs 
>> setup.
>> 
>> I have configured two NICs with Linux policy routing, with one NIC as a 
>> primary, currently performing regular tests with bwping, bwtraceroute, and 
>> bwctl, while the other NIC was configured for powstream (one way latency 
>> tests).  I manually configured with the configure file in
>> /opt/perfsonar_ps/regular_testing/etc/regular_testing.conf
>> 
>> After each <test>, I manually and explicitly added (rather than using 
>> implied "default" interface, problematic in a multi-NICs situation)
>> 
>> local_interface eth0
>> for bwping, bwtraceroute, and bwctl
>> 
>> local_interface eth1
>> for latency tests (powstream)
>> 
>> I am wondering how I can modify my configuration files to advertise 
>> INCOMING powstream only on ip address corresponding to eth1 and other 
>> tests to eth0.  Currently, the web GUI advertises all tests on both 
>> interfaces.
>> 
>> Thank you very much for your insight and have a wonderful New Year!
>> 
>> 
>> On 07/30/2014 12:38 PM, Trey Dockendorf wrote
>>> That's a problem with Linux I believe.  Having two interfaces on the same 
>>> subnet will result in both IPs responding but if you do an arping to each 
>>> IP you will likely see that the same MAC address is hit every time.  I do 
>>> not know the right way to fix this, so I've always avoided that situation 
>>> of configuring two NICs on the same subnet.
>>> 
>>> RedHat has knowledge base articles regarding this but it's for 
>>> subscribers only.  Here's something similar but not requiring a 
>>> subscription, 
>>> http://z-issue.com/wp/linux-rhel-6-centos-6-two-nics-in-the-same-subnet-but-secondary-doesnt-ping/
>>> 
>>> Not sure if that's the problem your describing.
>>> 
>>> - Trey
>>> 
>>> =============================
>>> 
>>> Trey Dockendorf
>>> Systems Analyst I
>>> Texas A&M University
>>> Academy for Advanced Telecommunications and Learning Technologies
>>> Phone: (979)458-2396
>>> Email: 
>>> 
>>> Jabber: 
>>> 
>>> 
>>> ----- Original Message -----
>>>> From: "Zhi-Wei Lu" 
>>>> <>
>>>> To: "Daniel Doyle" 
>>>> <>
>>>> Cc: 
>>>> ,
>>>>  "Pulak K Chowdhury" 
>>>> <>
>>>> Sent: Wednesday, July 30, 2014 1:56:23 PM
>>>> Subject: RE: [perfsonar-user] tips for One way latency and bw test on 
>>>> separate NICs on perfSonar 3.4rc2
>>>> 
>>>> Hi Daniel,
>>>> 
>>>> Thanks for the tip and I have found it configuration in the web gui.
>>>> 
>>>> However, I am stuck again!  I started the system with one configured
>>>> NIC and scheduled "owamp" test.  Later, I enabled the second NIC on
>>>> the same subnet, now the "Throughtput/Latency Graphs" won't
>>>> displayed at all, a perpetual spinning circles goes around (even
>>>> after I disabled the second NIC).
>>>> 
>>>> If I have two NICs in the the same host on the same subnet, will the
>>>> outgoing tests use the first interface only (default route on the
>>>> default NIC)?  While both interface were up, the "local services"
>>>> show all tests running on both NICs, how can I configure the
>>>> incoming tests for individual NIC.  With two NICs on the same
>>>> subnet, the incoming test comes the second NIC, but the outgoing
>>>> packets could be sent out on the first NIC, is that right?
>>>> 
>>>> Thank you.
>>>> 
>>>> Zhi-Wei Lu
>>>> IET-CR-Network Operations Center
>>>> University of California, Davis
>>>> (530) 752-0155
>>>> 
>>>> -----Original Message-----
>>>> From: Daniel Doyle 
>>>> [mailto:]
>>>> Sent: Wednesday, July 30, 2014 6:34 AM
>>>> To: Zhi-Wei Lu
>>>> Cc: 
>>>> ;
>>>>  Pulak K Chowdhury
>>>> Subject: Re: [perfsonar-user] tips for One way latency and bw test on
>>>> separate NICs on perfSonar 3.4rc2
>>>> 
>>>> Zhi-Wei,
>>>> 
>>>> This is configurable in the same place as you configure all the rest
>>>> of the test parameters, underneath "Toolkit Administration" on the
>>>> left in the section "Configure Tests".
>>>> 
>>>> There is now a new field called "Interface" under the Test Parameters
>>>> section of a test that defaults to "Default" which was the old
>>>> behavior. You can change this to instruct the test to use a specific
>>>> interface instead. All previously configured tests should have
>>>> "Default" set as their Interface option when upgrading.
>>>> 
>>>> Hope that helps.
>>>> 
>>>> -Dan
>>>> 
>>>> On Jul 30, 2014, at 1:47 AM, Zhi-Wei Lu 
>>>> <>
>>>>  wrote:
>>>> 
>>>>> Hi all,
>>>>> 
>>>>> I have successfully installed perfSonar 3.4rc2 recently and I heard
>>>>> that it is now possible to configure owamp and bw tests on two
>>>>> separate NICs, I would love to learn how I can configure perfSonar
>>>>> to accomplish two NIC set up.
>>>>> 
>>>>> Thank you very much for your help.
>>>>> 
>>>>> --
>>>>> Zhi-Wei Lu
>>>>> IET-CR-Network Operations Center
>>>>> University of California, Davis
>>>>> (530) 752-0155
>>>> Dan Doyle
>>>> GlobalNOC Software Developer
>>>> 1-812-856-3892
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>> 
>> -- 
>> Zhi-Wei Lu
>> IET-CR-Network Operations Center
>> University of California, Davis
>> (530) 752-0155
>> 
>