hi
i want to detect the link fault, when the link or the port is down, i can
detect it and recovery the fault,my detect code is below,i use mininet to
emulate the link failure using the command( link s1 s2 down),in my app, i can
monitor the EventOFPPortStatus,but the reason is not ofproto.OFPPR_DELETE,
someone can help me!
--------------------------------------------------------------------
def remove_flow(self,datapath,match):
ofproto=datapath.ofproto
parser=datapath.ofproto_parser
mod=parser.OFPFlowMod(datapath=datapath,command=ofproto.OFPFC_DELETE,out_group=ofproto.OFPG_ANY,out_port=ofproto.OFPP_ANY,match=match)
datapath.send_msg(mod)
@set_ev_cls(ofp_event.EventOFPPortStatus,MAIN_DISPATCHER)
def _port_status_handler(self,ev):
msg=ev.msg
parser=msg.datapath.ofproto_parser
reason=msg.reason
port_no=msg.desc.port_no
dpid=msg.datapath.id
ofproto=msg.datapath.ofproto
if reason==ofproto.OFPPR_DELETE:
match=parser.OFPMatch(in_port=port_no)
self.remove_flow(msg.datapath,match)
match=parser.OFPMatch(out_port=port_no)
self.remove_flow(msg.datapath,match)
------------------------------------------------------------------------------
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