Hi,
On 2015年08月25日 12:52, muzixing.com wrote:
> Hi all,
> I built an Packet_in packet with LLDP, and send it from a controller to
> another controller. When I parse the packet, I can get PacketIn packet with
> data. But the data is Not LLDP packet.
> When parse data ,I get LLDPUnknownFormat exception. The packet information
> show below.
>
> {'total_len': 87, 'xid': 0, 'msg_type': 10, 'data':
> '\xc2\x00\x00\x0e\x00\x00\x00\x00\x00\x00\x88\xcc\x02\x16\x07dpid:0000000000000001\x04\x05\x02\x00\x00\x00\x01\x06\x02\x00x\x12\x1b\x07domain_id:0000000000000002\x14\x05\x02\x00\x00\xff\xff\x00\x00',
> 'msg_len': 135, 'datapath': None, 'buffer_id': 4294967295L, 'reason': 1,
> 'version': 4, 'table_id': 0, 'cookie': 0, 'buf': <read-only buffer for
> 0x9dc2a10, size -1, offset 0 at 0x9e60980>, 'match':
> OFPMatch(oxm_fields={'in_port': 1})}
> data: 0xc2 0x0 0x0 0xe 0x0 0x0 0x0 0x0 0x0 0x0 0x88 0xcc 0x2 0x16 0x7 0x64
> 0x70 0x69 0x64 0x3a 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30
> 0x30 0x30 0x30 0x30 0x31 0x4 0x5 0x2 0x0 0x0 0x0 0x1 0x6 0x2 0x0 0x78 0x12
> 0x1b 0x7 0x64 0x6f 0x6d 0x61 0x69 0x6e 0x5f 0x69 0x64 0x3a 0x30 0x30 0x30
> 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x30 0x32 0x14 0x5 0x2
> 0x0 0x0 0xff 0xff 0x0 0x0
> {'data':
> '\xc2\x00\x00\x0e\x00\x00\x00\x00\x00\x00\x88\xcc\x02\x16\x07dpid:0000000000000001\x04\x05\x02\x00\x00\x00\x01\x06\x02\x00x\x12\x1b\x07domain_id:0000000000000002\x14\x05\x02\x00\x00\xff\xff\x00\x00',
> 'protocols':
> [ethernet(dst='c2:00:00:0e:00:00',ethertype=534,src='00:00:00:00:88:cc'),
> llc(control=ControlFormatI(pf_bit=0,receive_sequence_number=52,send_sequence_number=56),dsap_addr=7,ssap_addr=100),
>
> 'd:0000000000000001\x04\x05\x02\x00\x00\x00\x01\x06\x02\x00x\x12\x1b\x07domain_id:0000000000000002\x14\x05\x02\x00\x00\xff\xff\x00\x00']}
>
> We can find out that there is LLC in protocols in protocols.
> The ethernet type is 534, which is the same with the LLDP chassis_id‘ s
> typelen：534.
How did you make OFPPacketOut?
If you want to set Packet-In data into Packet-Out data,
I think you need to set OFPPacketIn.data, which is raw packet data, into
OFPPacketOut.data.
e.g.)
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
msg = ev.msg
data = msg.data
...
...
out = parser.OFPPacketOut(..., data=data) # set OFPPacketIn.data into
OFPPacketOut.data
datapath.send_msg(out)
Thanks,
Iwase
>
> What should I do?
>
> Thank you for your time.
>
>
> ------------------
> Distance 李呈
>
> _____________________________________________________
> School of Information and Communication Engineering
> Beijing University of Posts and Telecommunications
> Beijing 100876, PR China
>
> 北京邮电大学·信息与通信工程学院·通信工程
> _____________________________________________________
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