Hi,
I am using RYU version 3.27 to manage ovs and lagopus.
ovs i need to connect on OF 1.5(For support in some specific feature in
groups) while lagopus only supports OF 1.3
so, i am declaring my ofp versions as follows
OFP_VERSIONS = [
ofproto_v1_3.OFP_VERSION,
ofproto_v1_5.OFP_VERSION,
]
OVS successfully connects on OF version 1.5, However lagopus is facing
some issue while connecting on 1.3
connected socket:<eventlet.greenio.base.GreenSocket object at
0xb642644c> address:('192.168.1.4', 44517)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0xb642490c>
move onto config mode
EVENT ofp_event->Controller EventOFPErrorMsg
Error in the datapath None from ('192.168.1.4', 44517)
EVENT ofp_event->dpset EventOFPStateChange
EVENT ofp_event->Controller EventOFPStateChange
EVENT ofp_event->ofctl_service EventOFPStateChange
hub: uncaught exception: Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/ryu/lib/hub.py", line 52, in _launch
func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/ryu/controller/controller.py",
line 327, in datapath_connection_factory
datapath.serve()
File "/usr/lib/python2.7/site-packages/ryu/controller/controller.py",
line 247, in serve
self._recv_loop()
File "/usr/lib/python2.7/site-packages/ryu/controller/controller.py",
line 103, in deactivate
method(self)
File "/usr/lib/python2.7/site-packages/ryu/controller/controller.py",
line 189, in _recv_loop
handler(ev)
File "/usr/lib/python2.7/site-packages/ryu/controller/ofp_handler.py",
line 254, in error_msg_handler
(version, msg_type, msg_len, xid) = ofproto_parser.header(msg.data)
File "/usr/lib/python2.7/site-packages/ryu/ofproto/ofproto_parser.py",
line 39, in header
assert len(buf) >= ofproto_common.OFP_HEADER_SIZE
AssertionError
dumping some more info for the above error.
DUMPING BUFF IN HEADER : 0x04 0x01 0x00 0x0c 0x6e 0xc6 0xa2 0xf2
length 12 bufsize
DUMPING BUFF IN HEADER : 0x04 0x01 0x00 0x0c 0x6e 0xc6 0xa2 0xf2 0x00
0x00 0x00 0x00
EVENT ofp_event->Controller EventOFPErrorMsg
version=0x4, msg_type=0x1, msg_len=0xc, xid=0x6ec6a2f2
length 0 bufsize
DUMPING BUFF IN HEADER :
OFPErrorMsg received: type=0x00 code=0x00 message=
Error in the datapath None from ('192.168.1.4', 59995)
However in ryu version 4.16 this is what happens.I get a
OFPET_HELL_FAILED but i am able to get port info etc after lagopus is
connected.
connected socket:<eventlet.greenio.base.GreenSocket object at
0x7f7a7a865a10> address:('127.0.0.1', 55388)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7f7a7a7fe390>
move onto config mode
EVENT ofp_event->Controller EventOFPErrorMsg
EventOFPErrorMsg received.
version=0x4, msg_type=0x1, msg_len=0xc, xid=0xfea3027
`-- msg_type: OFPT_ERROR(1)
OFPErrorMsg(type=0x0, code=0x0, data=b'')
|-- type: OFPET_HELLO_FAILED(0)
|-- code: OFPHFC_INCOMPATIBLE(0)
`-- data:
EVENT ofp_event->dpset EventOFPSwitchFeatures
EVENT ofp_event->Controller EventOFPSwitchFeatures
EVENT ofp_event->ofctl_service EventOFPSwitchFeatures
switch features ev
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xfea3028,OFPSwitchFeatures(auxiliary_id=0,capabilities=79,datapath_id=1,n_buffers=65535,n_tables=255)
OFPErrorMsg received: type=0x00 code=0x00 message=
switch feature handle called succefully
add dpid 1 datapath <ryu.controller.controller.Datapath object at
0x7f7a7a865c90> new_info <ryu.app.ofctl.service._SwitchInfo object at
0x7f7a7e5c7090> old_info None
move onto main mode
EVENT ofp_event->dpset EventOFPStateChange
EVENT ofp_event->Controller EventOFPStateChange
DPSET: register datapath <ryu.controller.controller.Datapath object at
0x7f7a7a865c90>
register datapath: 0000000000000001
**lagopus dp connected
It would be really helpful , if you could tell me
1) Is the hello failed which i am seeing in ryu 4.16, have any impact on
the functionality of the switch? (i have tried OFPportstatus request, and
it seems to work)
2)What other things i would be required to handle if i were to manage DP's
with OF version 1.3 and 1.5 concurrently on Ryu 4.xx version
3)Also if possible i would like to know which fix related to this issue was
made onto ryu 3.xx version that is making it not fail in 4.16 version
Thanks and regards,
Rahul
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