Dear Ryu Experts,
I'm trying to inject an "echo" mpls packet using ryu, so I created an MPLS
packet using this code :
f = EchoRyu()
f.timestamp = int(time.time()*1000 - start_time)
eth_MPLS = ether.ETH_TYPE_MPLS
parser = datapath.ofproto_parser
ofproto = datapath.ofproto
actions = [parser.OFPActionPushMpls(eth_MPLS)]
src = "00:00:00:00:00:01"
dst = "00:01:00:00:00:01"
in_port = ofproto.OFPP_CONTROLLER
pkt = packet.Packet()
pkt.add_protocol(ethernet.ethernet(ethertype=ether.ETH_TYPE_MPLS,
dst=dst, src=src))
pkt.add_protocol(mpls.mpls(label=50, exp=0, bsb=1, ttl=255))
pkt.payload = f
pkt.serialize()
out = parser.OFPPacketOut(datapath=datapath, buffer_id=0xffffffff,
in_port=in_port, actions=actions, data=pkt.data)
datapath.send_msg(out)
but my packet seems to be malformed accordind to wireshark trace:
No. Time Source Destination Protocol
Length Info
64 7.006662000 192.168.1.200 192.168.1.200 OpenFlow
118 51241
Frame 64: 118 bytes on wire (944 bits), 118 bytes captured (944 bits) on
interface 0
Linux cooked capture
Internet Protocol Version 4, Src: 192.168.1.200 (192.168.1.200), Dst:
192.168.1.200 (192.168.1.200)
Transmission Control Protocol, Src Port: 6633 (6633), Dst Port: 51241
(51241), Seq: 99, Ack: 705, Len: 50
OpenFlow 1.3
Version: 1.3 (0x04)
Type: OFPT_PACKET_OUT (13)
Length: 50
Transaction ID: 2770032434
Buffer ID: OFP_NO_BUFFER (0xffffffff)
In port: OFPP_CONTROLLER (0xfffffffd)
Actions length: 8
Pad: 000000000000
Action
Type: OFPAT_PUSH_MPLS (19)
Length: 8
Ethertype: MPLS label switched packet (0x8847)
Pad: 0000
Data
Ethernet II, Src: 00:00:00_00:00:01 (00:00:00:00:00:01), Dst:
EquipTra_00:00:01 (00:01:00:00:00:01)
Destination: EquipTra_00:00:01 (00:01:00:00:00:01)
Source: 00:00:00_00:00:01 (00:00:00:00:00:01)
Type: MPLS label switched packet (0x8847)
MultiProtocol Label Switching Header, Label: 50, Exp: 0, S: 1, TTL:
255
[Malformed Packet: MPLS]
[Expert Info (Error/Malformed): Malformed Packet (Exception
occurred)]
[Malformed Packet (Exception occurred)]
[Severity level: Error]
[Group: Malformed]
Can someone please firgure out if I'm missing something here ?
Thanks,
Mounir
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