POX负载平衡器组件在Mininet-Wifi上引发OpenFlow错误

Question

我正在进行无线负载平衡器测试，并使用Mininet-Wifi作为仿真器，使用POX作为控制器。我有一个问题，这会让我发疯。我用Mininet-Wifi创建一个简单的拓扑

mininet@mininet-vm:~$ sudo mn --wifi --topo single,5 --controller=remote

具有一个简单的负载均衡器组件的运行控制器之后

mininet@mininet-vm:~$ sudo ~/pox/pox.py log.level --DEBUG forwarding.l2_learning misc.ip_loadbalancer --ip=10.0.1.1 --servers=10.0.0.1,10.0.0.2

但是我遇到了类似的OpenFlow错误；

POX 0.5.0 (eel) / Copyright 2011-2014 James McCauley, et al.
DEBUG:core:POX 0.5.0 (eel) going up...
DEBUG:core:Running on CPython (2.7.6/Nov 13 2018 12:45:42)
DEBUG:core:Platform is Linux-4.2.0-42-generic-x86_64-with-Ubuntu-14.04-trusty
INFO:core:POX 0.5.0 (eel) is up.
DEBUG:openflow.of_01:Listening on 0.0.0.0:6633
INFO:openflow.of_01:[00-00-00-00-00-01|4096 2] connected
DEBUG:forwarding.l2_learning:Connection [00-00-00-00-00-01|4096 2]
INFO:iplb:IP Load Balancer Ready.
INFO:iplb:Load Balancing on [00-00-00-00-00-01|4096 2]
ERROR:openflow.of_01:[00-00-00-00-00-01|4096 2] OpenFlow Error:
[00-00-00-00-00-01|4096 2] Error: header:
[00-00-00-00-00-01|4096 2] Error:   version: 1
[00-00-00-00-00-01|4096 2] Error:   type:    1 (OFPT_ERROR)
[00-00-00-00-00-01|4096 2] Error:   length:  28
[00-00-00-00-00-01|4096 2] Error:   xid:     11
[00-00-00-00-00-01|4096 2] Error: type: OFPET_BAD_REQUEST (1)
[00-00-00-00-00-01|4096 2] Error: code: OFPBRC_BUFFER_EMPTY (7)
[00-00-00-00-00-01|4096 2] Error: datalen: 16
[00-00-00-00-00-01|4096 2] Error: 0000: 01 0d 00 10 00 00 00 0b  00 00 01 00 00 01 00 00   |................|
ERROR:openflow.of_01:[00-00-00-00-00-01|4096 2] OpenFlow Error:
[00-00-00-00-00-01|4096 2] Error: header:
[00-00-00-00-00-01|4096 2] Error:   version: 1
[00-00-00-00-00-01|4096 2] Error:   type:    1 (OFPT_ERROR)
[00-00-00-00-00-01|4096 2] Error:   length:  28
[00-00-00-00-00-01|4096 2] Error:   xid:     13
[00-00-00-00-00-01|4096 2] Error: type: OFPET_BAD_REQUEST (1)
[00-00-00-00-00-01|4096 2] Error: code: OFPBRC_BUFFER_EMPTY (7)
[00-00-00-00-00-01|4096 2] Error: datalen: 16
[00-00-00-00-00-01|4096 2] Error: 0000: 01 0d 00 10 00 00 00 0d  00 00 01 01 00 01 00 00   |................|
ERROR:openflow.of_01:[00-00-00-00-00-01|4096 2] OpenFlow Error:
[00-00-00-00-00-01|4096 2] Error: header:
[00-00-00-00-00-01|4096 2] Error:   version: 1
[00-00-00-00-00-01|4096 2] Error:   type:    1 (OFPT_ERROR)
[00-00-00-00-00-01|4096 2] Error:   length:  28
[00-00-00-00-00-01|4096 2] Error:   xid:     15
[00-00-00-00-00-01|4096 2] Error: type: OFPET_BAD_REQUEST (1)
[00-00-00-00-00-01|4096 2] Error: code: OFPBRC_BUFFER_EMPTY (7)
[00-00-00-00-00-01|4096 2] Error: datalen: 16
[00-00-00-00-00-01|4096 2] Error: 0000: 01 0d 00 10 00 00 00 0f  00 00 01 02 00 01 00 00   |................|
ERROR:openflow.of_01:[00-00-00-00-00-01|4096 2] OpenFlow Error:
[00-00-00-00-00-01|4096 2] Error: header:
[00-00-00-00-00-01|4096 2] Error:   version: 1
[00-00-00-00-00-01|4096 2] Error:   type:    1 (OFPT_ERROR)
[00-00-00-00-00-01|4096 2] Error:   length:  28
[00-00-00-00-00-01|4096 2] Error:   xid:     17
[00-00-00-00-00-01|4096 2] Error: type: OFPET_BAD_REQUEST (1)
[00-00-00-00-00-01|4096 2] Error: code: OFPBRC_BUFFER_EMPTY (7)
[00-00-00-00-00-01|4096 2] Error: datalen: 16
[00-00-00-00-00-01|4096 2] Error: 0000: 01 0d 00 10 00 00 00 11  00 00 01 03 00 01 00 00   |................|
ERROR:openflow.of_01:[00-00-00-00-00-01|4096 2] OpenFlow Error:
[00-00-00-00-00-01|4096 2] Error: header:
[00-00-00-00-00-01|4096 2] Error:   version: 1
[00-00-00-00-00-01|4096 2] Error:   type:    1 (OFPT_ERROR)
[00-00-00-00-00-01|4096 2] Error:   length:  28
[00-00-00-00-00-01|4096 2] Error:   xid:     19
[00-00-00-00-00-01|4096 2] Error: type: OFPET_BAD_REQUEST (1)
[00-00-00-00-00-01|4096 2] Error: code: OFPBRC_BUFFER_EMPTY (7)
[00-00-00-00-00-01|4096 2] Error: datalen: 16
[00-00-00-00-00-01|4096 2] Error: 0000: 01 0d 00 10 00 00 00 13  00 00 01 04 00 01 00 00   |................|
DEBUG:forwarding.l2_learning:Port for 00:00:00:00:00:01 unknown -- flooding
INFO:iplb.00-00-00-00-00-01|4096:Server 10.0.0.2 up
DEBUG:forwarding.l2_learning:Port for 00:00:00:00:00:01 unknown -- flooding
INFO:iplb.00-00-00-00-00-01|4096:Server 10.0.0.1 up

Wireshark（2.6.5版）显示“尚未解析消息数据”。

有趣的是，负载均衡器组件可在小型网络拓扑上工作。运行时

mininet@mininet-vm:~$ sudo mn --topo single,5 --controller=remote

平衡器工作正常。

我一直在努力解决这个问题。我能做什么？我该如何解决这个问题？