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Re: [perfsonar-user] tips for One way latency and bw test on separate NICs on perfSonar 3.4rc2


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  • From: Andrew Lake <>
  • 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
  • Date: Fri, 2 Jan 2015 14:46:57 -0500

I think you want to use -p (--port) instead of -i.


On Jan 2, 2015, at 2:16 PM, Zhi-Wei Lu
<>
wrote:

> Hi Andy,
>
> I am trying to specify an "-i" (--interface) for ndt (web100srv) in
> /etc/sysconfig/ndt configuration file, but web100srv appears to ignore the
> "-i" option.
>
> I tried interface name or ip address, but ndt still listens on all
> interfaces:
>
> netstat -natp|grep 3001
> tcp 0 0 0.0.0.0:3001 0.0.0.0:*
> LISTEN 12255/web100srv
>
> Thanks!
>
> Zhi-Wei Lu
> IET-CR-Network Operations Center
> University of California, Davis
> (530) 752-0155
>
> -----Original Message-----
> From: Zhi-Wei Lu
> Sent: Friday, January 02, 2015 10:47 AM
> To: 'Andrew Lake'
> Cc:
> ;
> Daniel Doyle
> Subject: RE: [perfsonar-user] tips for One way latency and bw test on
> separate NICs on perfSonar 3.4rc2
>
> Thanks Andy,
>
> It is working from netstat output (even though the web page is still
> advertising for both interfaces).
>
> netstat -natp |grep bwctld
> tcp 0 0 128.120.80.74:4823 0.0.0.0:*
> LISTEN 580/bwctld
>
> netstat -natp |grep owampd
> tcp 0 0 128.120.80.78:861 0.0.0.0:*
> LISTEN 1266/owampd
>
> 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 10:39 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
>
> /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
>>>
>>
>




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