On Tue, 25 Feb 2014 14:59:03 +0000
Anna kos <[email protected]> wrote:
> Hi,
> I have done some simple modifications to simple_switch_13.py based on your
> previous instruction, I am getting strange switch behavior which can be
> seen after dumping switch flow table, even ping sometimes doesn't work
> between pc in port 1 and port 6 even when flows are installed..in my
> opinion flows are forwarded to incoming port and output port(see flow table
> below..am I correct..?).....
Looks flows are wrong. If you just simply connect two ports:
=
from ryu.controller import handler
from ryu.controller import dpset
from ryu.controller import ofp_event
from ryu.ofproto import ofproto_v1_3
from ryu.ofproto import ofproto_v1_3_parser
from ryu.base import app_manager
from ryu.ofproto.ofproto_parser import MsgBase, msg_pack_into, msg_str_attr
class OF13(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
_CONTEXTS = {
'dpset': dpset.DPSet,
}
def __init__(self, *args, **kwargs):
super(OF13, self).__init__(*args, **kwargs)
def delete_all_flows(self, dp):
match = dp.ofproto_parser.OFPMatch()
m = dp.ofproto_parser.OFPFlowMod(dp,
command=dp.ofproto.OFPFC_DELETE,
out_port=dp.ofproto.OFPP_ANY,
out_group=dp.ofproto.OFPG_ANY)
dp.send_msg(m)
def add_flow(self, datapath, priority, match, actions):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,
actions)]
mod = parser.OFPFlowMod(datapath=datapath, priority=priority,
match=match, instructions=inst)
datapath.send_msg(mod)
@handler.set_ev_cls(dpset.EventDP, dpset.DPSET_EV_DISPATCHER)
def handler_datapath(self, ev):
if ev.enter:
print "join"
dp = ev.dp
self.delete_all_flows(dp)
actions = [dp.ofproto_parser.OFPActionOutput(2)]
match = dp.ofproto_parser.OFPMatch(in_port=1)
self.add_flow(dp, 1, match, actions)
actions = [dp.ofproto_parser.OFPActionOutput(1)]
match = dp.ofproto_parser.OFPMatch(in_port=2)
self.add_flow(dp, 1, match, actions)
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