On Nov 25, 2013, at 2:18 PM, Amer <amer7...@hotmail.com> wrote:
> Hello,
> I tried it, it works fine.
> I tried pox.py forwarding. l2_multi openflow.discovery proto.dhcpd: default
>
> I received in Debug:
> misc.dhcpd [00-00-00-00-00-07 4] no packet
> proto.dhcpd [00-00-00-00-00-07 4] no packet
>
> DHCP packet data too short to parse: data len 86
On ConnectionUp, dhcpd installs a table entry to ensure that DHCP packets get
to the controller.
On LinkEvent, l2_multi clears the flow tables of all connected switches to set
up new paths.
.. this is probably the source of the problem. The latter is undoing the
former. You could try fixing it in a number of ways. I'd probably do it by
subclassing the DHCP server and adding a LinkEvent handler at a lower priority
than l2_multi's. In the handler, I'd just reinstall the DHCP table entry.
-- Murphy
> Best regards,
> Amer
>
> Sent from my iPhone
>
> On ٢٤/١١/٢٠١٣, at ٤:١٨ م, Murphy McCauley <murphy.mccau...@gmail.com> wrote:
>
>> Try to isolate the problem. What if you just run discovery and the DHCP
>> server? Does it work then? Does the log (at DEBUG level) provide any hints?
>>
>> -- Murphy
>>
>> On Nov 24, 2013, at 3:44 AM, Amer <amer7...@hotmail.com> wrote:
>>
>>> Dear Murphy
>>>
>>> I tried
>>>> pox.py log.level --DEBUG proto.dhcpd:default
>>>
>>> It is OK
>>> But I do not know what is the problem in previous command
>>>
>>> Best regards,
>>> Amer
>>>
>>> On ٢٤/١١/٢٠١٣, at ١:٢٦ ص, Murphy McCauley <murphy.mccau...@gmail.com>
>>> wrote:
>>>
>>>> Have you tried a simple test?
>>>> pox.py log.level --DEBUG proto.dhcpd:default
>>>>
>>>> -- Murphy
>>>>
>>>> On Nov 23, 2013, at 2:11 PM, AMER <amer7...@hotmail.com> wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> I tried the following:
>>>>>
>>>>> pox.py forwarding.l2_multi openflow.discovery proto.dhcpd
>>>>> --network=10.1.1.0/24 --ip=10.0.0.4 --first=10
>>>>> in l2_multi, from pox.lib.packet.dhcp import *
>>>>> under Switch() class I added
>>>>> core.DHCPD.addListenerByName('DHCPLease', _H_hate_)
>>>>> def _H_hate_ (self, event):
>>>>> macmap[event.connection.dpid] = event.host_mac
>>>>> print "DHCP"
>>>>>
>>>>> in mininet CLI
>>>>> >h4 dhclient -v
>>>>> Internet Systems Consortium DHCP Client 4.1-ESV-R4
>>>>> Copyright 2004-2011 Internet Systems Consortium.
>>>>> All rights reserved.
>>>>> For info, please visit https://www.isc.org/software/dhcp/
>>>>> Listening on LPF/h4-eth0/f2:f9:b3:96:ba:0b
>>>>> Sending on LPF/h4-eth0/f2:f9:b3:96:ba:0b
>>>>> Sending on Socket/fallback
>>>>> DHCPDISCOVER on h4-eth0 to 255.255.255.255 port 67 interval 3
>>>>> DHCPDISCOVER on h4-eth0 to 255.255.255.255 port 67 interval 5
>>>>> DHCPDISCOVER on h4-eth0 to 255.255.255.255 port 67 interval 5
>>>>> DHCPDISCOVER on h4-eth0 to 255.255.255.255 port 67 interval 13
>>>>>
>>>>> What is the problem
>>>>>
>>>>> Best regards,
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Eng Amer Alghadhban
>>>>> COE
>>>>> SANS-GCFW
>>>>> CEH, SCNP, CCNA
>>>>>
>>>>>
>>>>> From: amer7...@hotmail.com
>>>>> Date: Sat, 23 Nov 2013 22:03:06 +0300
>>>>> To: c.vijaya.du...@gmail.com
>>>>> CC: pox-dev@lists.noxrepo.org
>>>>> Subject: Re: [pox-dev] Build MAC list
>>>>>
>>>>> Thank you
>>>>> This means I should ping each host in the network to get the packets.
>>>>> I want something automatic like openflow discovery to discover the
>>>>> clients. I have another question:
>>>>> What does DHCP request message has (i.e., attributes)? In POX not in
>>>>> general.
>>>>>
>>>>> Best regards,
>>>>> Amer
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>> On ٢٣/١١/٢٠١٣, at ٤:٣٤ م, durga <c.vijaya.du...@gmail.com> wrote:
>>>>>
>>>>> Hi Amer,
>>>>>
>>>>> I am not too sure if I understand your question,but to my current
>>>>> learning, all the above fields can be collected as in_port.src (mac ID),
>>>>> event.dpid (switch connection) and event.port( inport).
>>>>>
>>>>> Cheers!
>>>>> Durga
>>>>>
>>>>>
>>>>>
>>>>> On Sat, Nov 23, 2013 at 10:47 PM, Amer <amer7...@hotmail.com> wrote:
>>>>> Hello,
>>>>>
>>>>> I want to collect MAC addresses of each host in the network and switch
>>>>> they connect to and port number.
>>>>> I think about DHCP and openflow discovery, but I do not know how to
>>>>> combine them.
>>>>>
>>>>>
>>>>> Best regards,
>>>>> Amer
>>>>
>>
