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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Build a bridge from your legacy apps to the future.
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