ONOS

[ShaD Attarha]

Hello

i am student of  master degree in network engineering
i want to improve load balancing of controller to switch masterships on the network control plane in ONOS controller

when i read the software architecture page i understood no load balancing policy has implemented yet

can i have your kind assistance to explain me how i can find specific code /app that is about load balancing therefor i can  improve it    

Best Regards

[satish karunanithi]

Hi,

Couple of days back Thomas replied to you in this aspect to refer to cpman app and collaborate with JianLi.

In case if you have missed his mail below it is:

Just to clarify, do you want to:

a) improve load-balancing of controller-to-switch mastership relationships on the network control-plane?

b) improve load-balancing of traffic over the network data-plane?

In this case, I recommend you take a look at the apps/cpman (control plane management) application and perhaps get in touch with Jian Li (on this list) to see if you can collaborate. The idea behind this app is to collect various metrics pertaining to observed system load as well as the number of control-plane interactions each cluster node is engaged in and then to use this information (together with other info, such as regions defined by the user) to help determine the optimal balanced load.

Regards,

Satish.

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[Jian Li]

2016년 4월 20일 수요일 오후 11시 49분 34초 UTC-7, ShaD Attarha 님의 말:

Hi, ShaD,

As Thomas and Satish mentioned, ONOS has some initial work on load balancing cross multiple instances. The underlying idea is to evenly assign the number of switch to each instance. If you press "E" button in topology view, you can trigger the equalizing mastership feature. The assumption of this feature is that 1) all instances are homogenous; 2) control traffic generated in each switch is homogenous.

However, if you take a look at real-world deployment, it is not always the case.
The idea of CPMan (located under apps/cpman) is to monitor various control plane metrics including instance spec, system load (CPU, memory, etc.), messages exchanged between instances, messages exchanged between control plane and data plane. With these monitored information, we can evenly distribute the control load across multiple instances.

By far, control plane monitoring part has been finished, and I am currently working on scheduling part. If you feel interested on this topic, we can work together.

I have documented some of the implementation details in wiki.
https://wiki.onosproject.org/display/ONOS/Control+Plane+Management+Application
https://wiki.onosproject.org/display/ONOS/Collecting+System+Metrics+from+CollectD+Agent
https://wiki.onosproject.org/display/ONOS/InfluxDB+Report+and+Query+Application
https://wiki.onosproject.org/display/ONOS/Integration+with+Grafana+Dashboard

// Jian

[lravh...@gmail.com]

Hi Jian,

I am fairly new to SDN and recently started working on ONOS load balancing. I have been trying to reproduce the work you published on CPMan all in vain.May you kindly assist on how to run this app, specifically the following:

• How do I configure the setpoints on the PID controller?
• How do I set the soft idle timeouts?

Regards,

Lue