Hi, I'm glad you got well again.

ovs-vsctl helps you to know datapath id, name, ports, and so on:

# sudo ovs-vsctl list Bridge

To know port numbers, please use ovs-ofctl:

# sudo ovs-ofctl dump-ports-desc (datapath name)

For more information, please refer to manpages of these commands.


On Mon, 2 Jun 2014 23:40:12 -0400
Md. Amjad Hossain wrote:

> Hello Yuichi Ito,
> 
> Sorry for replying after long time. Actually I had to stop working for my 
> physical condition and other reasons. 
> 
> Thank you for your suggestions. I want to start my work again. Could you 
> please tell me How can I know the datapath ID of a OVS ? Manually I can find 
> the port number of the VM-2 where VM-7 is connected, Do you know any easy way 
> to find that port?
> 
> Best Regards
> Amjad
> 
> 
> On Thu, Mar 6, 2014 at 8:50 PM, Yuichi Ito <[email protected] 
> <mailto:[email protected]>> wrote:
> 
>     hi.
> 
>     simple_switch_igmp.py requires rewriting according to environments when a 
> querier does not exist.
> 
>     please set the followings:
>      - the datapath id of VM-2 switch
>      - the port number of VM-2 switch that is linked to VM-7
> 
>     https://github.com/osrg/ryu/blob/master/ryu/app/simple_switch_igmp.py#L38
> 
> 
>     On Thu, 6 Mar 2014 00:06:04 -0500
>     Md. Amjad Hossain <[email protected] <mailto:[email protected]>> wrote:
> 
>     > Hi,
>     >
>     > I am trying to do video streaming using ryu controller's multicast 
> module " simpe_switch_igmp.py". My topology is attached. when video streamer 
> start streaming , video should be received by everyone listening in the 
> multicasting group. But most of the cases its not happening. Seems like when 
> H4 is receiving video, no other hosts getting it; when H4 is not listening 
> other host can receive video but sometimes need to flush switch forwarding 
> table manually.
>     >
>     >
>     > My question is, can anyone please let me know whether the 
> implementation of the IGMP module perfect. I mean, is there anyone who has 
> been successful doing multicasting with this existing IGMP module?
>     >
>     > Any suggestion for doing video streaming by multicasting would be 
> greatly appreciated.
>     >
>     >
>     > Thanks
>     > Amjad
>     >
>     >
>     > 
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