On May 26, 2014, at 10:18 PM, farshad tajedin <farshad.taje...@gmail.com> wrote:
>
>
> ---------- Forwarded message ----------
> From: farshad tajedin <farshad.taje...@gmail.com>
> Date: Mon, May 26, 2014 at 9:28 AM
> Subject: Re: [pox-dev] packet in message
> To: Murphy McCauley <murphy.mccau...@gmail.com>
> Cc: pox-dev <pox-dev@lists.noxrepo.org>
>
>
> ok , this code called when a packet received to edge switch for example
> e_s1(in my scenario, h1 ping h2 and h1 connected to e_s1 ) and path
> calculated between two hosts, this code first sends add flow setup msg to
> switches on this path(line1,2,3,4,5) including e_s1 then sends packet out msg
> to e_s1 (line 6)
>
> 1-core.openflow.sendToDPID(int('0002'+self.ToDPIDformat(SelectOne[1]),16),self.add_FlowEntri((SelectOne[2]%(NumOfPod/2))+(NumOfPod/2)+1,str(dstIP),0x800))
>
> 2-core.openflow.sendToDPID(int('0001'+self.ToDPIDformat(SelectOne[2]),16),self.add_FlowEntri((SelectOne[3]/(NumOfPod/2))+1,str(dstIP),0x800))
>
> 3-core.openflow.sendToDPID(int('0002'+self.ToDPIDformat(SelectOne[3]),16),self.add_FlowEntri((SelectOne[4]%(NumOfPod/2))+1,str(dstIP),0x800))
>
> 4-core.openflow.sendToDPID(int('0003'+self.ToDPIDformat(SelectOne[4]),16),self.add_FlowEntri(((int(dstNo)-1)%(NumOfPod/2))+1,str(dstIP),0x800))
>
>
> 5-self.connection.send(self.add_FlowEntri((SelectOne[1]%(NumOfPod/2))+(NumOfPod/2)+1,str(dstIP),0x800))
>
> 6-self.connection.send(self.packetOutMsg((SelectOne[1]%(NumOfPod/2))+(NumOfPod/2)+1,of.buffer_id,of.data))
>
> ----------------------------------------------------------------------------------------------------------------------------------------------
> can i attach pcap file for this senario?
Sure. Or upload it somewhere and post the link. (There's a file size limit,
though it's at least a few hundred K.)
Ideally you'd have captures for all the interfaces on the switch and its
control connection. With synchronized timestamps or as a single capture (but
done in such a way that interfaces can be differentiated).
-- Murphy
> On Mon, May 26, 2014 at 1:55 AM, Murphy McCauley <murphy.mccau...@gmail.com>
> wrote:
> Well, I'm not able to learn anything from that code snippet. I repeat my
> advice of using Wireshark to watch the traffic on the switch which sends the
> two packet-ins and try to confirm whether it actually receives the packet
> twice.
>
> -- Murphy
>
> On May 25, 2014, at 10:51 AM, farshad tajedin <farshad.taje...@gmail.com>
> wrote:
>
>> P.S
>> when i remove last line every thing is ok
>>
>>
>> On Sun, May 25, 2014 at 10:17 PM, farshad tajedin
>> <farshad.taje...@gmail.com> wrote:
>> sorry this hase better view
>> -core.openflow.sendToDPID(int('0002'+self.ToDPIDformat(SelectOne[1]),16),self.add_FlowEntri((SelectOne[2]%(NumOfPod/2))+(NumOfPod/2)+1,str(dstIP),0x800))
>>
>> -core.openflow.sendToDPID(int('0001'+self.ToDPIDformat(SelectOne[2]),16),self.add_FlowEntri((SelectOne[3]/(NumOfPod/2))+1,str(dstIP),0x800))
>>
>> -core.openflow.sendToDPID(int('0002'+self.ToDPIDformat(SelectOne[3]),16),self.add_FlowEntri((SelectOne[4]%(NumOfPod/2))+1,str(dstIP),0x800))
>>
>> -core.openflow.sendToDPID(int('0003'+self.ToDPIDformat(SelectOne[4]),16),self.add_FlowEntri(((int(dstNo)-1)%(NumOfPod/2))+1,str(dstIP),0x800))
>>
>>
>> -self.connection.send(self.add_FlowEntri((SelectOne[1]%(NumOfPod/2))+(NumOfPod/2)+1,str(dstIP),0x800))
>>
>> -self.connection.send(self.packetOutMsg((SelectOne[1]%(NumOfPod/2))+(NumOfPod/2)+1,of.buffer_id,of.data))
>>
>>
>>
>> On Sun, May 25, 2014 at 10:16 PM, farshad tajedin
>> <farshad.taje...@gmail.com> wrote:
>> this my code section which make this problem:
>>
>> core.openflow.sendToDPID(int('0002'+self.ToDPIDformat(SelectOne[1]),16),self.add_FlowEntri((SelectOne[2]%(NumOfPod/2))+(NumOfPod/2)+1,str(dstIP),0x800))
>>
>> core.openflow.sendToDPID(int('0001'+self.ToDPIDformat(SelectOne[2]),16),self.add_FlowEntri((SelectOne[3]/(NumOfPod/2))+1,str(dstIP),0x800))
>>
>> core.openflow.sendToDPID(int('0002'+self.ToDPIDformat(SelectOne[3]),16),self.add_FlowEntri((SelectOne[4]%(NumOfPod/2))+1,str(dstIP),0x800))
>>
>> core.openflow.sendToDPID(int('0003'+self.ToDPIDformat(SelectOne[4]),16),self.add_FlowEntri(((int(dstNo)-1)%(NumOfPod/2))+1,str(dstIP),0x800))
>>
>>
>> self.connection.send(self.add_FlowEntri((SelectOne[1]%(NumOfPod/2))+(NumOfPod/2)+1,str(dstIP),0x800))
>>
>> self.connection.send(self.packetOutMsg((SelectOne[1]%(NumOfPod/2))+(NumOfPod/2)+1,of.buffer_id,of.data))
>>
>>
>>
>> On Sun, May 25, 2014 at 11:44 AM, farshad tajedin
>> <farshad.taje...@gmail.com> wrote:
>> yes of curse but not now because i am at my job now and haven't access to
>> source code, i will do this a few hours later.
>>
>>
>> On Sun, May 25, 2014 at 10:07 AM, Murphy McCauley
>> <murphy.mccau...@gmail.com> wrote:
>> Generally speaking, there's only ever one active connection to a switch at a
>> time.
>>
>> Can you share a minimal version of your code which demonstrates the issue?
>>
>> -- Murphy
>>
>> On May 24, 2014, at 10:20 PM, farshad tajedin <farshad.taje...@gmail.com>
>> wrote:
>>
>>> as i said before in my controller code i used two connection to e_s1
>>> sequentially one for installing flow entry and next connection for sending
>>> packet out message. if connecting to switches done by thread programming so
>>> these message sending parallel, is these parallel message to one switch
>>> make problem?
>>>
>>>
>>> On Sun, May 25, 2014 at 8:15 AM, Murphy McCauley
>>> <murphy.mccau...@gmail.com> wrote:
>>> It's implemented by a recoco Task as described in the POX manual. Beneath
>>> that, there's a thread, but then... isn't there always?
>>>
>>> -- Murphy
>>>
>>> On May 24, 2014, at 4:04 AM, farshad tajedin <farshad.taje...@gmail.com>
>>> wrote:
>>>
>>>> is connection to switch implemented by thread?
>>>>
>>>>
>>>> On Sat, May 24, 2014 at 9:26 AM, Murphy McCauley
>>>> <murphy.mccau...@gmail.com> wrote:
>>>> How about disabling enough links in your topology so that it doesn't have
>>>> loops and then trying? (I'm wondering if the second one has looped back
>>>> to where it started somehow.)
>>>>
>>>> Another thought would be to wireshark all the ports of the switch where
>>>> you're seeing two of these packets. Do you actually see the packet arrive
>>>> twice? Leave twice? Etc.
>>>>
>>>> -- Murphy
>>>>
>>>> On May 23, 2014, at 9:51 PM, farshad tajedin <farshad.taje...@gmail.com>
>>>> wrote:
>>>>
>>>>> yes both of them are same except buffer id , i do this in mininet
>>>>>
>>>>>
>>>>> On Fri, May 23, 2014 at 2:53 PM, farshad tajedin
>>>>> <farshad.taje...@gmail.com> wrote:
>>>>> yes both of them are same except buffer id , i do this in mininet
>>>>>
>>>>>
>>>>> On Fri, May 23, 2014 at 1:23 PM, Murphy McCauley
>>>>> <murphy.mccau...@gmail.com> wrote:
>>>>> Are the packet-in messages and their payloads 100% identical?
>>>>>
>>>>> Are you doing this on real hardware, or in Mininet, or... ?
>>>>>
>>>>> -- Murphy
>>>>>
>>>>> On May 22, 2014, at 11:13 PM, farshad tajedin <farshad.taje...@gmail.com>
>>>>> wrote:
>>>>>
>>>>>> hi murphy
>>>>>> i have a path between two hosts(h1 and h2) in a data center,when i ping
>>>>>> h2 from h1 since switches on this path have no flow entry for route icmp
>>>>>> packet to h2 , the edge switch that h1 connected to it(e_s1) ,send icmp
>>>>>> packet to controller. in controller i handle it and i add flow entry to
>>>>>> each switch on this path in my controller code and at last send packet
>>>>>> out msg to e_s1 to forward this packet. during this action (ping h2
>>>>>> from h1) i capture traffic of my network by wireshark and i see packet
>>>>>> in msg from e_s1 two times sends to controller that i expect packet in
>>>>>> msg must send once.
>>>>>>
>>>>>>
>>>>>> On Fri, May 23, 2014 at 4:30 AM, Murphy McCauley
>>>>>> <murphy.mccau...@gmail.com> wrote:
>>>>>> I think you'll need to provide a lot more detail.
>>>>>>
>>>>>> Are you saying that you're trying to proactively insert all the rules
>>>>>> into the switch when it connects, but you're getting packet-ins (from
>>>>>> table misses) anyway and you're not expecting them?
>>>>>>
>>>>>> How do packet-outs factor in here?
>>>>>>
>>>>>> -- Murphy
>>>>>>
>>>>>> On May 22, 2014, at 5:45 AM, farshad tajedin <farshad.taje...@gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> i must say that i use 1.add flow message and 2.packet out message
>>>>>>> sequensialy
>>>>>>>
>>>>>>>
>>>>>>> On Thu, May 22, 2014 at 3:17 PM, farshad tajedin
>>>>>>> <farshad.taje...@gmail.com> wrote:
>>>>>>> hi all
>>>>>>>
>>>>>>> i have a fat-tree topology, when i ping a host from another host i
>>>>>>> found that first host 2 times send packet in message to controller and
>>>>>>> i dont know why. can anybody help me ?
>>>>>>>
>>>>>>> P.S i use core.openflow.addListenerByName("ConnectionUp",
>>>>>>> start_switch) for event handling.
>>>>>>>
>>>>>>> --
>>>>>>> Best Regards
>>>>>>>
>>>>>>> Farshad Tajedin
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Best Regards
>>>>>>>
>>>>>>> Farshad Tajedin
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Best Regards
>>>>>>
>>>>>> Farshad Tajedin
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Best Regards
>>>>>
>>>>> Farshad Tajedin
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Best Regards
>>>>>
>>>>> Farshad Tajedin
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Best Regards
>>>>
>>>> Farshad Tajedin
>>>
>>>
>>>
>>>
>>> --
>>> Best Regards
>>>
>>> Farshad Tajedin
>>
>>
>>
>>
>> --
>> Best Regards
>>
>> Farshad Tajedin
>>
>>
>>
>> --
>> Best Regards
>>
>> Farshad Tajedin
>>
>>
>>
>> --
>> Best Regards
>>
>> Farshad Tajedin
>>
>>
>>
>> --
>> Best Regards
>>
>> Farshad Tajedin
>
>
>
>
> --
> Best Regards
>
> Farshad Tajedin
>
>
>
> --
> Best Regards
>
> Farshad Tajedin
