Your code appears to work as you intended here (Mininet with OVS built from the
repo somewhere around 1.9.0).
Are you running other components? For example, if you're running l2_learning,
it will see the packet-in event, assume it was due to a table miss, and then
instruct the switch to resend it.
It may help to monitor the control traffic. You can easily dump it with the
openflow.debug component and then load it into Wireshark to view with the
OpenFlow dissector.
-- Murphy
On May 28, 2013, at 1:30 PM, mehmet fatih Aktaş wrote:
> Hi,
>
> I programmed the OF controller to send a of_mod message:
> m = of.ofp_flow_mod()
> m.priority = 0x7000 # Pretty high
> m.match.dl_type = ethernet.ARP_TYPE
> m.match.dl_dst = EthAddr("FF:FF:FF:FF:FF:FF")
> m.idle_timeout = 100
> m.hard_timeout = 0
> m.actions.append(of.ofp_
> action_output(port=of.OFPP_CONTROLLER))
> event.connection.send(m)
>
> once it is connected to a switch. The goal of this is to enforce all the ARP
> requested incoming to a connected sw to be directly forwarded to the
> controller WITHOUT broadcasting the ARP in any case.
> And when I got the reply for flow_stats for a random sw, it is showing that
> of_mod is actually set correctly e.g.
>
> FlowStats rxed from sw_00-00-00-00-00-01 : [{'packet_count': 0,
> 'hard_timeout': 0, 'byte_count': 0, 'duration_sec': 0, 'actions':
> [{'max_len': 65535, 'type': 'OFPAT_OUTPUT', 'port': 'OFPP_CONTROLLER'}],
> 'duration_nsec': 44000000, 'priority': 28672, 'idle_timeout': 100, 'cookie':
> 0, 'table_id': 0, 'match': {'dl_type': 'ARP', 'dl_dst': 'ff:ff:ff:ff:ff:ff',
> 'get_nw_dst': 'None', 'get_nw_src': 'None'}}]
>
> However, sws continue broadcasting arp reqs even though they forward them
> also to the controller. What may be the possible problem causing that, any
> idea would be greatly appreciated.
>
> Thanks.
>
> Mehmet Fatih Aktas
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> openflow-discuss@lists.stanford.edu
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