Contributors

Overview

Control Plane Manager (CPMan) adds management capability to control plane in a way to provide higher availability and reliability for ONOS.

The features of CPMan are comprised of  two parts: 1) control plane monitoring, 2) enhanced mastership management.

1. Control plane monitoring: CPMan monitors various types of control plane metrics that include control message, system metrics.
   We collect stats information for six types of control message and those are PACKET_IN, PACKET_OUT, FLOW_MOD, FLOW_REMOVED, STATS_REQUEST, STATS_REPLY.
   We also collect stats information for four types of system metrics that include CPU, memory, disk I/O, network I/O.
   Note that the monitoring granularity is 1 minute.
2. Enhanced mastership management: Work-In-Progress.

Architecture

Control message subsystem

This subsystem is used to aggregate and collect various types of control message from network devices. Followings are the components of the subsystem.

• ControlMessageProvider
  • Collect and aggregate OpenFlow messages. Note that message aggregation relies on MetricsService.
  • Abstract OpenFlow message into protocol agnostic control message type.
• ControlMessageManager
  • Transfer the aggregated control message statistics to application layer.
• ControlMessageApplication
  • Query and store control message statistics into Round-Robin-Database (RRD) through ControlPlaneMonitor service. 
  • Note that, RRD stores the statistic information for 24-hours, and the upcoming data will gradually overwrites the data that is stored previously.

Following table shows the mapping between abstracted message type and OpenFlow message type.

Usage

Installation

Before you start, you will need followings:

• Ubuntu 14.04 64-bit
• 2GB or more RAM
• 2 or more processors

ONOS, mininet Installation and CPMan Activation

Install and run ONOS instance. The detailed procedures can be refer from here.

To collect control message, we also need to deploy a set of devices and connect to ONOS.

This can be realizable by setting up an OpenFlow network using mininet. 
Mininet installation and configuration can be referred from http://mininet.org/download/. 

After ONOS and mininet get initialized, we can activate CPMan application.

onos > app activate org.onosproject.cpman 

As long as CPMan is activated, it automatically senses control messages and stores stats. into local RRD.

If you want to collect system metrics (e.g., CPU, memory usages, disk I/O, etc.), please refer to this link.

Command Line Interface (CLI)

Web Graphic User Interface (GUI)

Terminology

TBD

References