Thank you Murphy, 

I read these points and worked on queue and port stats. 
(ofp_queue_stats_request, and ofp_queue_stats) (ofp_port_stats and 
ofp_port_stats_request)

To print the queues and ports stats including all packets sent through them. 



I've this simple experiment, two host (h1 and h2) and one switch. The BW of 
link (h1-s1) and link (h2-s1) is 10Mbps and 5 Mbps respectively. 

h1 --------- s1 ---------- h2 

In my experiment, I create two queues for each interface (s1-eth1 and s1-eth2). 
One queue (q0) is for TCP traffic while the q1 is for other traffic. I would 
like to ask how to measure real time queueing, so the controller has 
information about how many packets in each queue at particular time.  

Regards, 
Ali



________________________________
 From: Murphy McCauley <[email protected]>
To: Ali Al-Khamis <[email protected]> 
Cc: "[email protected]" <[email protected]> 
Sent: Thursday, 12 September 2013, 3:52
Subject: Re: [pox-dev] About print network status
 


A good place to start might be by sending stats queries to the switches and 
analyzing the replies.

You might read the "OpenFlow in POX:OpenFlow Messages:ofp_stats_request - 
Requesting statistics" section in the POX wiki manual.

-- Murphy


On Sep 11, 2013, at 7:35 PM, Ali Al-Khamis <[email protected]> wrote:

Hi all, 
>
>
>I am new in POX controller. I would like to ask how the POX controller can 
>print the network's status such as Bandwidth.., so if there is any exchange 
>information of the network or a switch status between the switch and the 
>controller.
>
>
>Regards, 
>Ali

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