I'm sorry Ben, I didn't copy paste the ovs-vsctl show result previously; I
manually typed it. But its actually configured. This is the exact output:

[neha@doorsingdog-dx ~]$ sudo ovs-vsctl show
15b36cfd-2b20-4459-abb0-26396a692ab4
    Bridge "ovsbr0"
        Controller "tcp:127.0.0.1:6633"
        Port "ovsbr0"
            Interface "ovsbr0"
                type: internal
        Port "vnet2"
            Interface "vnet2"
        Port "vnet0"
            Interface "vnet0"
        Port "vnet1"
            Interface "vnet1"
    ovs_version: "1.4.0"


Can you please answer it now?


On 7/12/12 10:52 PM, "Ben Pfaff" <[email protected]> wrote:

>On Thu, Jul 12, 2012 at 10:49:14PM +0530, Neha Jatav wrote:
>> I am running NOX controller with a python script that prints out the
>> destination mac and the source mac for each packet arriving at the now
>> controller and then floods it out. So here's what happening:
>> 
>> With em1 connected, all the packets that arrive at em1 are coming to the
>> controller and printing out the details. However, without em1 connected
>>to
>> the OVS, when I have the following setup:
>>  ____                  ____
>> / VM1\______br0_______/ VM3\
>> \____/       |        \____/
>>              |
>>             _|_
>>            /VM2\
>>            \___/
>> 
>> VM1 & VM2 are of the same subnet. They can ping each other. The ping
>> packets aren't seen at the controller probably because they are in the
>> same subnet and they don't need a flow table entry.
>
>That doesn't make sense.  OpenFlow doesn't make any distinction on
>this basis.

Ok. 
>
>> VM3 is in a different subnet. So, when I ping from VM1 to VM3 or
>> viceversa, they aren't reachable to each other. However, the packets do
>> not arrive at the controller at all. Could you suggest me what might
>> possibly be wrong.
>> 
>> This is how the bridge looks:
>> 
>> $sudo ovs-vsctl br0 show
>> Bridge "br0"
>>      Port "vnet1"
>>              Interface "vnet1"
>>      Port "br0"
>>              Interface "br0"
>>              type: internal
>>      Port "vnet0"
>>              Interface "vnet0"
>>      Port "vnet2"
>>              Interface "vnet2"
>>      ovs_version: "1.4.0"
>
>No controller is configured.

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