perfSONAR User Q&A and Other Discussion

[Charley Kneifel <>]

We have a scenario on campus when we have a 'transparent' failover of our 
firewalls.  The failover causes a slight increase in latency as the secondary 
set are about 3 km further away.  We don't end up with a path change that is 
visible as a traceroute change but we do end up with an increase in latency.  
It would be nice to incorporate the SNMP traps for those failovers into 
perfsonar.

Charley

-----Original Message-----
From: 

 
[mailto:]
 On Behalf Of Michael Johnson
Sent: Monday, July 24, 2017 11:44 AM
To: Jeronimo Bezerra 
<>
Cc: 

Subject: Re: [perfsonar-user] Importing External Data to perfSonar charts

Hi Jeronimo,

We have similar use cases here as well; I do think this could be useful to a 
lot of people. Thanks for your suggestion!

In the short(er) term, we plan to add a indicators of traceroutes change 
events to the graphs, which might help you correlate ps test results with 
network events, if not quite as directly. That's planned for 4.1.

Thanks,
Michael

On Mon, Jul 24, 2017 at 03:36:43PM +0000, Jeronimo Bezerra wrote:
>Hi Michael,
>
>We have a few long-haul links, and we have at least one network event per 
>day involving these links. In our vision, our SDN controller could be 
>extended to upload these network events to perfSonar via REST or later via 
>CSV file. Then, it would be easier to correlate events.
>
>I will be waiting for this feature! Thanks for your feedback!
>
>Jeronimo
>
>> On Jul 24, 2017, at 10:59 AM, Michael Johnson 
>> <>
>>  wrote:
>>
>> Hi Jeronimo,
>>
>> We have an open issue requesting something similar:
>> https://github.com/perfsonar/graphs/issues/4
>>
>> Your request is a little different in that you want to import the data 
>> rather than manually entering it, but this seems like a logical feature to 
>> add to it. This feature has not yet been planned for a specific perfsonar 
>> release, so nothing has happened with it yet. As described, it's pretty 
>> involved to add. It might be possible to do a subset of the functionality 
>> in a shorter timeframe, but it's unlikely to happen in the near future 
>> (4.1 at least is already planned out).
>> Thanks for the feedback!
>>
>> - Michael
>>
>> On Fri, Jul 21, 2017 at 06:51:45PM +0000, Jeronimo Bezerra wrote:
>>> Hi All,
>>>
>>> I really liked the new perfSonar charts, specially the interactive part 
>>> of it. I was wondering how complicated would be to add more info to those 
>>> dynamic charts, to try to correlate with network events. For example, if 
>>> one of the links flaps (which could add errors to a specific OWAMP test 
>>> running), how could I reflect that into our charts? This would allow me 
>>> to easily correlate events.
>>>
>>> How complicated would that be in case I have all network events in a CSV 
>>> or JSON file? I just need to print a dot indicating that something 
>>> external happened at that time.
>>>
>>> Thanks,
>>> Jeronimo
>>
>> --
>> Michael Johnson
>> GlobalNOC Software Engineering
>> Indiana University
>> 
>> 812-856-2771
>>
>

-- 
Michael Johnson
GlobalNOC Software Engineering
Indiana University

812-856-2771