Enabling openflow decreases the speed substantially in HP procurve 3500yl-48G

[devilfox]

Hi, I am using HP Procurve 3500yl-48G with firmware K.16 for my experiements. I have done the following.

1. Create seperate VLAN for controller

2. Create sepearte VLAN for other hosts

3. I have a internet uplink connected to the VLAN mentioned in 2nd so that hosts can connect to internet.

4. I am using ubuntu 18.04 to host ONOS controller connected to controller VLAN.

The setup is working normally. But the issue is that whenever I enable openflow, the communication speed between the hosts is decreased substantially. For example, if openflow is disabled, the speed it shows is around 900MBits/s but when openflow is enabled, it decreases to mere Kbits/s. I am confused if I have done anything wrong on the setup. I trued to search for similar instances but couldn't find any. I hope my problem statement is clear. If anyone can help me troubleshoot this, I would be grateful.

Thank you