Hi ISHIDA-san Please check my bgp packet capture in case of above report . Regards,
Toshiki Tsuboi
Wireshark_mpBGP.pcapng.gz
Description: GNU Zip compressed data
2014/07/30 14:21、ISHIDA Wataru <ishida.wat...@lab.ntt.co.jp> のメール：
> Hi,
>
> Thank you for reporting.
> Could you kindly send a pcap file of the bgp messages?
> Then I will check why bgp parser can’t work well.
>
> Thanks,
>
> On Jul 30, 2014, at 13:31, Toshiki Tsuboi <t.tsubo2...@gmail.com> wrote:
>
>> Hi
>>
>> It looks Ryu BGP can not parse mpBGP Update Message .
>> In spite of receiving mpBGP Update Message, Ryu BGP has parsed it as
>> regular BGP Update Message in case of the sample code as follows .
>>
>> ( Caution : Total path attribute length including MP_REACH_NLRI )
>>
>> Best Regards .
>> Toshiki Tsuboi
>>
>>
>>
>> — result of sample code ---
>>
>> tsubo@RyuBGP:~/ryu/ryu/services/protocols/bgp/sampleApp$ sudo
>> ./start_RyuBGPSpeaker.sh
>> INFO 2014-07-30 12:50:24,023 base 207 API method core.start called with
>> args: {'router_id': '10.10.0.2', 'label_range': (100, 100000), 'waiter':
>> <ryu.lib.hub.Event object at 0x7f7d52aade90>, 'local_as': 64512,
>> 'bgp_server_port': 179, 'refresh_max_eor_time': 0, 'refresh_stalepath_time':
>> 0}
>> DEBUG 2014-07-30 12:50:24,037 processor 89 Starting new processing run...
>> DEBUG 2014-07-30 12:50:24,038 processor 118 Processing RT NLRI destination...
>> DEBUG 2014-07-30 12:50:24,039 processor 108 Processing destination...
>> DEBUG 2014-07-30 12:50:24,040 application 171 Core started True
>> INFO 2014-07-30 12:50:24,040 base 207 API method neighbor.create called with
>> args: {'remote_as': 64511, 'cap_refresh': True, 'cap_mbgp_vpnv6': True,
>> 'hold_time': 180, 'cap_mbgp_vpnv4': True, 'cap_enhanced_refresh': True,
>> 'ip_address': '192.168.100.100'}
>> DEBUG 2014-07-30 12:50:24,041 application 194 Added neighbor 192.168.100.100
>> DEBUG 2014-07-30 12:50:24,042 application 99 Started Network Controller
>> DEBUG 2014-07-30 12:50:24,043 peer 559 Started peer Peer(ip:
>> 192.168.100.100, asn: 64511)
>> DEBUG 2014-07-30 12:50:24,043 net_ctrl 337 NetworkController started
>> listening for connections...
>> DEBUG 2014-07-30 12:50:25,045 peer 209 Peer 192.168.100.100 BGP FSM went
>> from Idle to Connect
>> DEBUG 2014-07-30 12:50:25,046 peer 952 Peer(ip: 192.168.100.100, asn: 64511)
>> trying to connect to ('192.168.100.100', 179)
>> DEBUG 2014-07-30 12:50:25,046 base 398 Connect TCP called for
>> 192.168.100.100:179
>> DEBUG 2014-07-30 12:50:25,070 speaker 401 Sent msg to ('192.168.100.100',
>> '179') >>
>> BGPOpen(bgp_identifier='10.10.0.2',hold_time=180,len=61,my_as=64512,opt_param=[BGPOptParamCapabilityMultiprotocol(afi=1,cap_code=1,cap_length=4,length=6,reserved=0,safi=1,type=2),
>>
>> BGPOptParamCapabilityMultiprotocol(afi=1,cap_code=1,cap_length=4,length=6,reserved=0,safi=128,type=2),
>>
>> BGPOptParamCapabilityMultiprotocol(afi=2,cap_code=1,cap_length=4,length=6,reserved=0,safi=128,type=2),
>> BGPOptParamCapabilityRouteRefresh(cap_code=2,cap_length=0,length=2,type=2),
>> BGPOptParamCapabilityEnhancedRouteRefresh(cap_code=70,cap_length=0,length=2,type=2)],opt_param_len=32,type=1,version=4)
>> INFO 2014-07-30 12:50:25,071 peer 1859 Connection to peer: 192.168.100.100
>> established
>> DEBUG 2014-07-30 12:50:25,083 speaker 447 Received msg from
>> ('192.168.100.100', '179') <<
>> BGPOpen(bgp_identifier='10.0.0.1',hold_time=180,len=53,my_as=64511,opt_param=[BGPOptParamCapabilityMultiprotocol(afi=1,cap_code=1,cap_length=4,length=6,reserved=0,safi=1,type=2),
>>
>> BGPOptParamCapabilityMultiprotocol(afi=1,cap_code=1,cap_length=4,length=6,reserved=0,safi=128,type=2),
>>
>> BGPOptParamCapabilityUnknown(cap_code=128,cap_length=0,cap_value='',length=2,type=2),
>>
>> BGPOptParamCapabilityRouteRefresh(cap_code=2,cap_length=0,length=2,type=2)],opt_param_len=24,type=1,version=4)
>> DEBUG 2014-07-30 12:50:25,085 peer 209 Peer 192.168.100.100 BGP FSM went
>> from Connect to OpenConfirm
>> DEBUG 2014-07-30 12:50:25,086 peer 1005 Trying to bind protocol
>> <ryu.services.protocols.bgp.speaker.BgpProtocol object at 0x7f7d529be2d0> to
>> peer Peer(ip: 192.168.100.100, asn: 64511)
>> DEBUG 2014-07-30 12:50:25,086 peer 983 Connect retry event for Peer(ip:
>> 192.168.100.100, asn: 64511) is cleared
>> DEBUG 2014-07-30 12:50:25,087 speaker 532 Started keep-alive and expire
>> timer for negotiated holdtime 180
>> DEBUG 2014-07-30 12:50:25,088 speaker 401 Sent msg to ('192.168.100.100',
>> '179') >> BGPKeepAlive(len=19,type=4)
>> DEBUG 2014-07-30 12:50:25,089 speaker 447 Received msg from
>> ('192.168.100.100', '179') << BGPKeepAlive(len=19,type=4)
>> DEBUG 2014-07-30 12:50:25,089 peer 209 Peer 192.168.100.100 BGP FSM went
>> from OpenConfirm to Established
>> DEBUG 2014-07-30 12:50:25,090 peer 1727 Communicating current best path for
>> all afi/safi except 1/132
>> DEBUG 2014-07-30 12:50:25,114 speaker 447 Received msg from
>> ('192.168.100.100', '179') << BGPKeepAlive(len=19,type=4)
>> DEBUG 2014-07-30 12:50:25,116 speaker 447 Received msg from
>> ('192.168.100.100', '179') << BGPKeepAlive(len=19,type=4)
>> DEBUG 2014-07-30 12:50:25,126 speaker 566 Traceback (most recent call last):
>> File
>> "/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/speaker.py",
>> line 560, in _recv_loop
>> self.data_received(next_bytes)
>> File
>> "/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/speaker.py",
>> line 275, in data_received
>> self._data_received(next_bytes)
>> File
>> "/usr/local/lib/python2.7/dist-packages/ryu/services/protocols/bgp/speaker.py",
>> line 351, in _data_received
>> msg, rest = BGPMessage.parser(self._recv_buff)
>> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/packet/bgp.py", line
>> 1937, in parser
>> kwargs = subcls.parser(binmsg)
>> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/packet/bgp.py", line
>> 2120, in parser
>> pa, binpathattrs = _PathAttribute.parser(binpathattrs)
>> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/packet/bgp.py", line
>> 1276, in parser
>> **subcls.parse_value(value)), rest
>> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/packet/bgp.py", line
>> 1812, in parse_value
>> next_hop = addrconv.ipv4.bin_to_text(next_hop_bin)
>> File "/usr/local/lib/python2.7/dist-packages/ryu/lib/addrconv.py", line 30,
>> in bin_to_text
>> return str(self._addr(self._strat.packed_to_int(bin),
>> File "/usr/local/lib/python2.7/dist-packages/netaddr/strategy/ipv4.py",
>> line 196, in packed_to_int
>> return _struct.unpack('>I', packed_int)[0]
>> error: unpack requires a string argument of length 4
>>
>> INFO 2014-07-30 12:50:25,128 peer 1873 Connection to peer 192.168.100.100
>> lost, reason: unpack requires a string argument of length 4 Resetting retry
>> connect loop: False
>> DEBUG 2014-07-30 12:50:25,128 peer 209 Peer 192.168.100.100 BGP FSM went
>> from Established to Idle
>> DEBUG 2014-07-30 12:50:25,128 base 305 Stopping activity BgpProtocol True,
>> ('192.168.100.100', '179'), ('192.168.100.102', '46632').
>> DEBUG 2014-07-30 12:50:25,129 base 291 BgpProtocol True, ('192.168.100.100',
>> '179'), ('192.168.100.102', '46632'): Stopping timer Holdtime Timer
>> DEBUG 2014-07-30 12:50:25,129 base 291 BgpProtocol True, ('192.168.100.100',
>> '179'), ('192.168.100.102', '46632'): Stopping timer Keepalive Timer
>> DEBUG 2014-07-30 12:50:25,129 base 285 BgpProtocol True, ('192.168.100.100',
>> '179'), ('192.168.100.102', '46632'): Closing socket passive_conn -
>> <eventlet.greenio.GreenSocket object at 0x7f7d529bea10>
>> DEBUG 2014-07-30 12:50:25,130 base 317 Stopping activity BgpProtocol True,
>> ('192.168.100.100', '179'), ('192.168.100.102', '46632') finished.
>> DEBUG 2014-07-30 12:50:25,130 peer 1700 Un-scheduling sending of initial
>> Non-RTC UPDATEs (init. UPDATEs already sent: False)
>> DEBUG 2014-07-30 12:50:25,130 peer_manager 65 Cleaning obsolete paths whose
>> source/version: 192.168.100.100/2
>> INFO 2014-07-30 12:50:25,130 speaker 599 unpack requires a string argument
>> of length 4
>>
>>
>>
>> <wireshark_mpBGP_Update_message.png>
>>
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