Hi All,
I need to measure link delay in Ryu controller. I want to send a packet-out
message for all switches. Then, the time between the sent packet-out message
in the source node and received the packet-in message in the destination node
is calculated. I am a beginner in Ryu and don't know how to send a packet with
specific EtherType such as 0x8fc to all switches. I have obtained the MAC of
all switches and build a packet.
How I can send a packet with specific EtherType to all switches?
I don't have datapath (db) of all switches. how to set the datapath parameter
for every switch?How to insert time.time to the packet?
The adjacency is a matrix of the neighbor of nodes.
The macadrr is a matrix of the MAC address of nodes.
def send_packet(self, dp, port, pkt):
ofproto = dp.ofproto
parser = dp.ofproto_parser
pkt.serialize()
data = pkt.data
action = [parser.OFPActionOutput(port=port)]
out = parser.OFPPacketOut(
datapath=dp, buffer_id=ofproto.OFP_NO_BUFFER,
in_port=ofproto.OFPP_CONTROLLER,
actions=action, data=data)
dp.send_msg(out)
def create_packet(self):
i=l=0
for l in range(1,len(self.adjacency)+1):
#print("\n")
for i in self.adjacency[l]:
ethertype = 0x8fc
dst = self.macaddr(i)
src = self.macaddr(l)
e = ethernet.ethernet(dst, src, ethertype)
p = packet.Packet()
p.add_protocol(e)
p.add_protocol(time.time()) ???? It causes an error.
p.serialize()
port=self.adjacency[l][i]
send_packet(self, dp **??????** , port, p)
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