---------- 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?
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
