On Oct 30, 2013, at 2:23 AM, Sayed Qaiser Ali Shah Shah
<[email protected]> wrote:
> Thanks to both of you. I got what you want to say. Thanks Murphy for
> explaining it clearly. I will try this.
>
> What I have done till now is:
> I sent flow stats request to switch from pox controller and in response of
> that request I got reply from switch. I am sharing the code
>
> def _handle_flowstats_received (self, event):
> stats = flow_stats_to_list(event.stats)
> log.debug("FlowStatsReceived from %s: %s",
> dpidToStr(event.connection.dpid), stats)
> for f in event.stats:
> print stats
>
> Using this method I received following reply
>
> [{'packet_count': 7, 'hard_timeout': 30, 'byte_count': 686, 'duration_sec':
> 7, 'actions': [{'type': 'OFPAT_ENQUEUE', 'port': 3, 'queue_id': 2}],
> 'duration_nsec': 46000000, 'priority': 65535, 'idle_timeout': 10, 'cookie':
> 0, 'table_id': 0, 'match': {'dl_type': 'IP', 'nw_dst': IPAddr('10.0.0.3'),
> 'tp_src': 8, 'dl_vlan_pcp': 0, 'dl_src': 'fe:9c:4e:22:7e:6c', 'nw_proto': 1,
> 'nw_tos': 0, 'tp_dst': 0, 'get_nw_src': '10.0.0.1/32', 'get_nw_dst':
> '10.0.0.3/32', 'dl_dst': '52:4f:83:f5:cc:24', 'dl_vlan': 65535, 'nw_src':
> IPAddr('10.0.0.1'), 'in_port': 1}}
>
> When I use
> for f in event.stats:
> print f.priority
> print f.duration_nsec
> print f.idle_timeout
> print f.cookie
> print f.table_id
>
> I got all of the above. But I am unable to get MAC address. I think it is
> because MAC address is in action field.
It's not in the action, it's in the match.
print f.match.dl_src
-- Murphy
> On Wed, Oct 30, 2013 at 1:51 PM, durga <[email protected]> wrote:
> Hi Sayed,
>
> My 2 cents as below..
>
> Just to put Murphy's words into examples- please find below
>
> while initialising the controller, create a mac adde dictionary like below
>
>
> def __init__(self):
>
>
>
> # as soon as the module is hooked initialise..
>
>
> self.macaddrtable = {}
>
>
>
> as and when you get an packet with unknown address you can update the
> dictionary based on source mac learning like below
>
>
>
> #updating srcmactable
> self.updateMap(inport,srcmacaddr)
>
>
>
>
> that will help you keep a dummy src mac able in the controller.
>
>
>
>
>
> Cheers!
> Durga
>
>
>
> On Wed, Oct 30, 2013 at 7:46 PM, Murphy McCauley <[email protected]>
> wrote:
> You want to compare to entries in the flow table of a particular switch?
> This seems like a sort of strange thing to want. But the easiest way to do
> it is to keep track of what flow entries you installed in a normal Python
> data structure like a set or dictionary and check if the MAC is in there.
>
> -- Murphy
>
> On Oct 30, 2013, at 1:39 AM, Sayed Qaiser Ali Shah Shah
> <[email protected]> wrote:
>
> > Hello everyone,
> >
> > Using POX controller I want to compare Mac addresses from packet in and
> > flow table. As we can get source mac from packet in by using packet.src but
> > I don't know how can we get source mac and destination MAC from table. What
> > I want to do is:
> > Lets say source mac from table is table.src.
> >
> > if (packet.src == table.src):
> > Do This
> > else
> > Do this
> >
>
>
>
>
>
> --
> Regards
>
> Sayed Qaiser Ali Shah
> MSIT-12
> NUST (SEECS)
