Description

        The purpose of the test is to measure the performance of OpenFlow controller channels with a single or cluster controllers. Multiple switches are setuped up by IxNetwork, and directly connected to controllers by TCP connection.   

        There are two items we should measure:

      1、The established establish time of these switches;

      2、The maximum number of OF channels can be support coinstantaneous by controllers.

      We measure the establish time by the time interval between the first Hello Message and the last Hello Message of these switches.The maximum number of OF channels measure by a time interval  without any session flap, and the time interval is recommended as 5 minutes.

      We For single mode, we done the test repeated by different number of switches with the sequence of 500、1000、1500、2000 ……

      For cluster mode, we done the test repeated by different number of switches with the sequence of 100、200、300、400 ……

Suggestions

1. If the OF sessions are restricted to 1000 or 1024, please check the following points:
   

   a) DPID configured by IxNetwork, they should exclusive with each switch.

   b) File descriptor of the OS which running the controllers(default with 1024).

   c)  ARP tables volume of the OS which running the controllers(default with 1024).

2. In order to test out the best performance of controllers, several ports of IxNetwork are suggested. In the test below, we used four ports to do the test, each ports with same number of switches, forexample, 500 switches test, we configed 125 switches each port. 

Preparation

1. Features install

   Code Block
   onos> feature:install onos-drivers onos> feature:install onos-openflow onos> feature:install onos-openflow-base

     

Test steps

...

      6. If step 5 is successful, then wait for 5 minutes and check whether the established channels are stable without any flap, and the Echo messages sent sended are equal with received. 

      7.  if If step 6 has passed,  analyse the establish time from the messages captured by four ports and write down the result.

      8. Clean the configuration of controllers and IxNetwork.

       9. Restart the test with another number of switches.

Test Results