rdelg / of-bw-control Goto Github PK

Hello, just wanted to let you know that this looks extremely promising for issuing bandwidth control on physical networks as well. For right now, I am just trying to make it through your README but am encountering an OpenFlow protocol problem. When I try

ryu-manager Switch.py

or

ryu-manager Rest.py

I encounter the error that the title of this issue shows. Do you have any idea how I may resolve this issue? I am a little perplexed because I thought Ryu adapted to any OpenFlow version and when I run these files without opening mininet first I still get this error. Any insights on how to get past this?

Hi @RDelg
I hope that you are doing fine and great.

Please, I want to assigne a specific value for each connected host at each time, and install it in the mater table of the switch.

For example, I have 6 hosts connected to the CPqD switch. I want to assign (based on my bw algorithm) for each client an amount of bw form the total available bw. Let say, at t = 4s, the available bw = 5mbps.
Host 1 : bw = 1 mbps
Host 2: bw = 750 kbps
Host3: bw = 1.5 mbps
.......

After t = 8s.
Host 1 : bw = 700 kbps
Host 2: bw = 250kbps
Host3: bw = 1 mbps
.......
So, I want to assign the bw based on my algorithm, and the switch install it in the mater table .

Please, How we can do this in your algorithm. Many thanks

Best Regards,

Hi Mr. Rene Delgado,
can you give me a tutorial how to work.

Regards

Hi @RDelg,
The RYU gives this error when number of hosts per-switch increase to 10:

hub: uncaught exception: Traceback (most recent call last):
File "/home/mininet/ryu/ryu/lib/hub.py", line 52, in _launch
func(_args, *_kwargs)
File "/home/mininet/ryu/ryu/base/app_manager.py", line 287, in _event_loop
handler(ev)
File "/home/mininet/ryu/ryu/app/OF-BW-Control/Switch.py", line 137, in _meter_stats_reply_handler
if (self.rate_used[dpid][port][src] >= int(self.rate_allocated[dpid][port][src]*0.7)
KeyError: 4294967294

It seems like a memory management problem ! or whet do you think!

Furthermore if we use it to monitor 2 Userswitch, its also gives the same issue

Regards,

Hi Mr. Rene Delgado,
I hope that you are doing fine.

I have tested the code by running mininet with 10 clients and NAT service, each client run a video streaming service.
I have discovered that bw controle work good between clients (for example file transfert). However, it not work properly with external hosts (WAN). For example for my video streaming test, bw cannot exceed 2 Kbps ?. Is there any solution to control the bw dynamically inside the LAN between clients when all clients launch video streaming service (of course using NAT to connect with strealming server).

Best Regards,