its pcap link:
https://www.dropbox.com/s/9964xavdbqrv27n/pingSenario
On Tue, May 27, 2014 at 9:50 AM, Murphy McCauley
<murphy.mccau...@gmail.com>wrote:
>
> 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
>
>
>
--
Best Regards
Farshad Tajedin
