Mininet系列实验（六）：Mininet动态改变转发规则实验
2024-05-12 00:15:26
Mininet系列实验（六）：Mininet动态改变转发规则实验
一、 实验目的
熟悉Mininet自定义拓扑脚本的编写；
熟悉编写POX脚本动态改变转发规则
二、实验原理
在SDN环境中，控制器可以通过对交换机下发流表操作来控制交换机的转发行为。在本实验中，基于Mininet脚本，编写POX脚本，动态改变交换机的转发规则。
三、实验任务
先看一下本次实验的拓扑图：
在该环境下，假设H1 ping H4，初始的路由规则是S1-S2-S5，一秒后，路由转发规则变为S1-S3-S5，再过一秒，规则变为S1-S4-S5，然后再回到最初的转发规则S1-S2-S5。通过这个循环调度的例子动态地改变交换机的转发规则。
1.1在pox文件里面创建脚本lab_controller.py
1 from pox.core import core
2
3 import pox.openflow.libopenflow_01 as of
4
5 from pox.lib.util import dpidToStr
6
7 from pox.lib.addresses import IPAddr, EthAddr
8
9 from pox.lib.packet.arp import arp
10
11 from pox.lib.packet.ethernet import ethernet, ETHER_BROADCAST
12
13 from pox.lib.packet.packet_base import packet_base
14
15 from pox.lib.packet.packet_utils import *
16
17 import pox.lib.packet as pkt
18
19 from pox.lib.recoco import Timer
20
21 import time
22
23
24
25 log = core.getLogger()
26
27
28
29 s1_dpid=0
30
31 s2_dpid=0
32
33 s3_dpid=0
34
35 s4_dpid=0
36
37 s5_dpid=0
38
39
40
41 s1_p1=0
42
43 s1_p4=0
44
45 s1_p5=0
46
47 s1_p6=0
48
49 s2_p1=0
50
51 s3_p1=0
52
53 s4_p1=0
54
55
56
57 pre_s1_p1=0
58
59 pre_s1_p4=0
60
61 pre_s1_p5=0
62
63 pre_s1_p6=0
64
65 pre_s2_p1=0
66
67 pre_s3_p1=0
68
69 pre_s4_p1=0
70
71
72
73 turn=0
74
75
76
77 def getTheTime(): #fuction to create a timestamp
78
79 flock = time.localtime()
80
81 then = "[%s-%s-%s" %(str(flock.tm_year),str(flock.tm_mon),str(flock.tm_mday))
82
83
84
85 if int(flock.tm_hour)<10:
86
87 hrs = "0%s" % (str(flock.tm_hour))
88
89 else:
90
91 hrs = str(flock.tm_hour)
92
93 if int(flock.tm_min)<10:
94
95 mins = str(flock.tm_min)
96
97 secs = "0%s" % (str(flock.tm_sec))
98
99 else:
100
101 secs = str(flock.tm_sec)
102
103
104
105 then +="]%s.%s.%s" % (hrs,mins,secs)
106
107 return then
108
109
110
111
112
113 def _timer_func ():
114
115 global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid,turn
116
117
118
119
120
121 #print getTheTime(), "sent the port stats request to s1_dpid"
122
123
124
125 if turn==0:
126
127 msg = of.ofp_flow_mod()
128
129 msg.command=of.OFPFC_MODIFY_STRICT
130
131 msg.priority =100
132
133 msg.idle_timeout = 0
134
135 msg.hard_timeout = 0
136
137 msg.match.dl_type = 0x0800
138
139 msg.match.nw_dst = "10.0.0.4"
140
141 msg.actions.append(of.ofp_action_output(port = 5))
142
143 core.openflow.getConnection(s1_dpid).send(msg)
144
145 turn=1
146
147 return
148
149
150
151 if turn==1:
152
153 msg = of.ofp_flow_mod()
154
155 msg.command=of.OFPFC_MODIFY_STRICT
156
157 msg.priority =100
158
159 msg.idle_timeout = 0
160
161 msg.hard_timeout = 0
162
163 msg.match.dl_type = 0x0800
164
165 msg.match.nw_dst = "10.0.0.4"
166
167 msg.actions.append(of.ofp_action_output(port = 6))
168
169 core.openflow.getConnection(s1_dpid).send(msg)
170
171 turn=2
172
173 return
174
175
176
177 if turn==2:
178
179 msg = of.ofp_flow_mod()
180
181 msg.command=of.OFPFC_MODIFY_STRICT
182
183 msg.priority =100
184
185 msg.idle_timeout = 0
186
187 msg.hard_timeout = 0
188
189 msg.match.dl_type = 0x0800
190
191 msg.match.nw_dst = "10.0.0.4"
192
193 msg.actions.append(of.ofp_action_output(port = 4))
194
195 turn=0
196
197 return
198
199
200
201 def _handle_portstats_received (event):
202
203 global s1_p1,s1_p4, s1_p5, s1_p6, s2_p1, s3_p1, s4_p1
204
205 global pre_s1_p1,pre_s1_p4, pre_s1_p5, pre_s1_p6, pre_s2_p1, pre_s3_p1, pre_s4_p1
206
207
208
209 if event.connection.dpid==s1_dpid:
210
211 for f in event.stats:
212
213 if int(f.port_no)<65534:
214
215 if f.port_no==1:
216
217 pre_s1_p1=s1_p1
218
219 s1_p1=f.rx_packets
220
221
222 if f.port_no==4:
223
224 pre_s1_p4=s1_p4
225
226 s1_p4=f.tx_packets
227
228 #s1_p4=f.tx_bytes
229
230
231 if f.port_no==5:
232
233 pre_s1_p5=s1_p5
234
235 s1_p5=f.tx_packets
236
237 if f.port_no==6:
238
239 pre_s1_p6=s1_p6
240
241 s1_p6=f.tx_packets
242
243
244
245 for f in event.stats:
246
247 if int(f.port_no)<65534:
248
249 if f.port_no==1:
250
251 pre_s2_p1=s2_p1
252
253 s2_p1=f.rx_packets
254
255 #s2_p1=f.rx_bytes
256
257
258 if event.connection.dpid==s3_dpid:
259
260 for f in event.stats:
261
262 if int(f.port_no)<65534:
263
264 if f.port_no==1:
265
266 pre_s3_p1=s3_p1
267
268 s3_p1=f.rx_packets
269
270
271
272
273 if event.connection.dpid==s4_dpid:
274
275 for f in event.stats:
276
277 if int(f.port_no)<65534:
278
279 if f.port_no==1:
280
281 pre_s4_p1=s4_p1
282
283 s4_p1=f.rx_packets
284
285
286
287
288 def _handle_ConnectionUp (event):
289
290 global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid
291
292 print "ConnectionUp: ",dpidToStr(event.connection.dpid)
293
294
295
296 #remember the connection dpid for switch
297
298 for m in event.connection.features.ports:
299
300 if m.name == "s1-eth1":
301
302 s1_dpid = event.connection.dpid
303
304 print "s1_dpid=", s1_dpid
305
306 elif m.name == "s2-eth1":
307
308 s2_dpid = event.connection.dpid
309
310 print "s2_dpid=", s2_dpid
311
312 elif m.name == "s3-eth1":
313
314 s3_dpid = event.connection.dpid
315
316 elif m.name == "s4-eth1":
317
318 s4_dpid = event.connection.dpid
319
320 print "s4_dpid=", s4_dpid
321
322 elif m.name == "s5-eth1":
323
324 s5_dpid = event.connection.dpid
325
326 print "s5_dpid=", s5_dpid
327
328
329
330 if s1_dpid<>0 and s2_dpid<>0 and s3_dpid<>0 and s4_dpid<>0:
331
332 Timer(1, _timer_func, recurring=True)
333
334
335
336 def _handle_PacketIn(event):
337
338 global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid
339
340
341
342 packet=event.parsed
343
344
345
346
347 if event.connection.dpid==s1_dpid:
348
349 a=packet.find('arp')
350
351 if a and a.protodst=="10.0.0.4":
352
353 msg = of.ofp_packet_out(data=event.ofp)
354
355 msg.actions.append(of.ofp_action_output(port=4))
356
357 event.connection.send(msg)
358
359
360
361 if a and a.protodst=="10.0.0.5":
362
363 msg = of.ofp_packet_out(data=event.ofp)
364
365 msg.actions.append(of.ofp_action_output(port=5))
366
367 event.connection.send(msg)
368
369
370
371 if a and a.protodst=="10.0.0.6":
372
373 msg = of.ofp_packet_out(data=event.ofp)
374
375 msg.actions.append(of.ofp_action_output(port=6))
376
377 event.connection.send(msg)
378
379
380
381 if a and a.protodst=="10.0.0.1":
382
383 msg = of.ofp_packet_out(data=event.ofp)
384
385 msg.actions.append(of.ofp_action_output(port=1))
386
387 event.connection.send(msg)
388
389
390
391 if a and a.protodst=="10.0.0.2":
392
393 msg = of.ofp_packet_out(data=event.ofp)
394
395 msg.actions.append(of.ofp_action_output(port=2))
396
397 event.connection.send(msg)
398
399
400
401 if a and a.protodst=="10.0.0.3":
402
403 msg = of.ofp_packet_out(data=event.ofp)
404
405 msg.actions.append(of.ofp_action_output(port=3))
406
407 event.connection.send(msg)
408
409
410
411 msg = of.ofp_flow_mod()
412
413 msg.priority =100
414
415 msg.idle_timeout = 0
416
417 msg.hard_timeout = 0
418
419 msg.match.dl_type = 0x0800
420
421 msg.match.nw_dst = "10.0.0.1"
422
423 msg.actions.append(of.ofp_action_output(port = 1))
424
425 event.connection.send(msg)
426
427
428
429 msg = of.ofp_flow_mod()
430
431 msg.priority =100
432
433 msg.idle_timeout = 0
434
435 msg.hard_timeout = 0
436
437 msg.match.dl_type = 0x0800
438
439 msg.match.nw_dst = "10.0.0.2"
440
441 msg.actions.append(of.ofp_action_output(port = 2))
442
443 event.connection.send(msg)
444
445
446
447 msg = of.ofp_flow_mod()
448
449 msg.priority =100
450
451 msg.idle_timeout = 0
452
453 msg.hard_timeout = 0
454
455 msg.match.dl_type = 0x0800
456
457 msg.match.nw_dst = "10.0.0.3"
458
459 msg.actions.append(of.ofp_action_output(port = 3))
460
461 event.connection.send(msg)
462
463
464
465 msg = of.ofp_flow_mod()
466
467 msg.priority =100
468
469 msg.idle_timeout = 0
470
471 msg.hard_timeout = 1
472
473 msg.match.dl_type = 0x0800
474
475 msg.match.nw_dst = "10.0.0.4"
476
477 msg.actions.append(of.ofp_action_output(port = 4))
478
479 event.connection.send(msg)
480
481
482
483 msg = of.ofp_flow_mod()
484
485 msg.priority =100
486
487 msg.idle_timeout = 0
488
489 msg.hard_timeout = 0
490
491 msg.match.dl_type = 0x0800
492
493 msg.match.nw_dst = "10.0.0.5"
494
495 msg.actions.append(of.ofp_action_output(port = 5))
496
497 event.connection.send(msg)
498
499
500
501 msg = of.ofp_flow_mod()
502
503 msg.priority =100
504
505 msg.idle_timeout = 0
506
507 msg.hard_timeout = 0
508
509 msg.match.dl_type = 0x0800
510
511 msg.match.nw_dst = "10.0.0.6"
512
513 msg.actions.append(of.ofp_action_output(port = 6))
514
515 event.connection.send(msg)
516
517
518
519 elif event.connection.dpid==s2_dpid:
520
521 msg = of.ofp_flow_mod()
522
523 msg.priority =10
524
525 msg.idle_timeout = 0
526
527 msg.hard_timeout = 0
528
529 msg.match.in_port = 1
530
531 msg.match.dl_type=0x0806
532
533 msg.actions.append(of.ofp_action_output(port = 2))
534
535 event.connection.send(msg)
536
537
538
539 msg = of.ofp_flow_mod()
540
541 msg.priority =10
542
543 msg.idle_timeout = 0
544
545 msg.hard_timeout = 0
546
547 msg.match.in_port = 1
548
549 msg.match.dl_type=0x0800
550
551 msg.actions.append(of.ofp_action_output(port = 2))
552
553 event.connection.send(msg)
554
555
556
557 msg = of.ofp_flow_mod()
558
559 msg.priority =10
560
561 msg.idle_timeout = 0
562
563 msg.hard_timeout = 0
564
565 msg.match.in_port = 2
566
567 msg.match.dl_type=0x0806
568
569 msg.actions.append(of.ofp_action_output(port = 1))
570
571 event.connection.send(msg)
572
573
574
575 msg = of.ofp_flow_mod()
576
577 msg.priority =10
578
579 msg.idle_timeout = 0
580
581 msg.hard_timeout = 0
582
583 msg.match.in_port = 2
584
585 msg.match.dl_type=0x0800
586
587 msg.actions.append(of.ofp_action_output(port = 1))
588
589 event.connection.send(msg)
590
591
592
593 elif event.connection.dpid==s3_dpid:
594
595 msg = of.ofp_flow_mod()
596
597 msg.priority =10
598
599 msg.idle_timeout = 0
600
601 msg.hard_timeout = 0
602
603 msg.match.in_port = 1
604
605 msg.match.dl_type=0x0806
606
607 msg.actions.append(of.ofp_action_output(port = 2))
608
609 event.connection.send(msg)
610
611
612
613 msg = of.ofp_flow_mod()
614
615 msg.priority =10
616
617 msg.idle_timeout = 0
618
619 msg.hard_timeout = 0
620
621 msg.match.in_port = 1
622
623 msg.match.dl_type=0x0800
624
625 msg.actions.append(of.ofp_action_output(port = 2))
626
627 event.connection.send(msg)
628
629
630
631 msg = of.ofp_flow_mod()
632
633 msg.priority =10
634
635 msg.idle_timeout = 0
636
637 msg.hard_timeout = 0
638
639 msg.match.in_port = 2
640
641 msg.match.dl_type=0x0806
642
643 msg.actions.append(of.ofp_action_output(port = 1))
644
645 event.connection.send(msg)
646
647
648
649 msg = of.ofp_flow_mod()
650
651 msg.priority =10
652
653 msg.idle_timeout = 0
654
655 msg.hard_timeout = 0
656
657 msg.match.in_port = 2
658
659 msg.match.dl_type=0x0800
660
661 msg.actions.append(of.ofp_action_output(port = 1))
662
663 event.connection.send(msg)
664
665
666
667 elif event.connection.dpid==s4_dpid:
668
669 msg = of.ofp_flow_mod()
670
671 msg.priority =10
672
673 msg.idle_timeout = 0
674
675 msg.hard_timeout = 0
676
677 msg.match.in_port = 1
678
679 msg.match.dl_type=0x0806
680
681 msg.actions.append(of.ofp_action_output(port = 2))
682
683 event.connection.send(msg)
684
685
686
687 msg = of.ofp_flow_mod()
688
689 msg.priority =10
690
691 msg.idle_timeout = 0
692
693 msg.hard_timeout = 0
694
695 msg.match.in_port = 1
696
697 msg.match.dl_type=0x0800
698
699 msg.actions.append(of.ofp_action_output(port = 2))
700
701 event.connection.send(msg)
702
703
704
705 msg = of.ofp_flow_mod()
706
707 msg.priority =10
708
709 msg.idle_timeout = 0
710
711 msg.hard_timeout = 0
712
713 msg.match.in_port = 2
714
715 msg.match.dl_type=0x0806
716
717 msg.actions.append(of.ofp_action_output(port = 1))
718
719 event.connection.send(msg)
720
721
722
723 msg = of.ofp_flow_mod()
724
725 msg.priority =10
726
727 msg.idle_timeout = 0
728
729 msg.hard_timeout = 0
730
731 msg.match.in_port = 2
732
733 msg.match.dl_type=0x0800
734
735 msg.actions.append(of.ofp_action_output(port = 1))
736
737 event.connection.send(msg)
738
739
740
741 elif event.connection.dpid==s5_dpid:
742
743 a=packet.find('arp')
744
745 if a and a.protodst=="10.0.0.4":
746
747 msg = of.ofp_packet_out(data=event.ofp)
748
749 msg.actions.append(of.ofp_action_output(port=4))
750
751 event.connection.send(msg)
752
753
754
755 if a and a.protodst=="10.0.0.5":
756
757 msg = of.ofp_packet_out(data=event.ofp)
758
759 msg.actions.append(of.ofp_action_output(port=5))
760
761 event.connection.send(msg)
762
763
764
765 if a and a.protodst=="10.0.0.6":
766
767 msg = of.ofp_packet_out(data=event.ofp)
768
769 msg.actions.append(of.ofp_action_output(port=6))
770
771 event.connection.send(msg)
772
773
774
775 if a and a.protodst=="10.0.0.1":
776
777 msg = of.ofp_packet_out(data=event.ofp)
778
779 msg.actions.append(of.ofp_action_output(port=1))
780
781 event.connection.send(msg)
782
783
784
785 if a and a.protodst=="10.0.0.2":
786
787 msg = of.ofp_packet_out(data=event.ofp)
788
789 msg.actions.append(of.ofp_action_output(port=2))
790
791 event.connection.send(msg)
792
793
794
795 if a and a.protodst=="10.0.0.3":
796
797 msg = of.ofp_packet_out(data=event.ofp)
798
799 msg.actions.append(of.ofp_action_output(port=3))
800
801 event.connection.send(msg)
802
803
804
805
806
807
808 msg = of.ofp_flow_mod()
809
810 msg.priority =100
811
812 msg.idle_timeout = 0
813
814 msg.hard_timeout = 0
815
816 msg.match.dl_type = 0x0800
817
818 msg.match.nw_dst = "10.0.0.1"
819
820 msg.actions.append(of.ofp_action_output(port = 1))
821
822 event.connection.send(msg)
823
824
825
826 msg = of.ofp_flow_mod()
827
828 msg.priority =100
829
830 msg.idle_timeout = 0
831
832 msg.hard_timeout = 0
833
834 msg.match.dl_type = 0x0800
835
836 msg.match.nw_dst = "10.0.0.2"
837
838 msg.actions.append(of.ofp_action_output(port = 2))
839
840 event.connection.send(msg)
841
842
843
844 msg = of.ofp_flow_mod()
845
846 msg.priority =100
847
848 msg.idle_timeout = 0
849
850 msg.hard_timeout = 0
851
852 msg.match.dl_type = 0x0800
853
854 msg.match.nw_dst = "10.0.0.3"
855
856 msg.actions.append(of.ofp_action_output(port = 3))
857
858 event.connection.send(msg)
859
860
861
862 msg = of.ofp_flow_mod()
863
864 msg.priority =100
865
866 msg.idle_timeout = 0
867
868 msg.hard_timeout = 0
869
870 msg.match.dl_type = 0x0800
871
872 msg.match.nw_dst = "10.0.0.4"
873
874 msg.actions.append(of.ofp_action_output(port = 4))
875
876 event.connection.send(msg)
877
878
879
880 msg = of.ofp_flow_mod()
881
882 msg.priority =100
883
884 msg.idle_timeout = 0
885
886 msg.hard_timeout = 0
887
888 msg.match.dl_type = 0x0800
889
890 msg.match.nw_dst = "10.0.0.5"
891
892 msg.actions.append(of.ofp_action_output(port = 5))
893
894 event.connection.send(msg)
895
896
897
898 msg = of.ofp_flow_mod()
899
900 msg.priority =100
901
902 msg.idle_timeout = 0
903
904 msg.hard_timeout = 0
905
906 msg.match.dl_type = 0x0800
907
908 msg.match.nw_dst = "10.0.0.6"
909
910 msg.actions.append(of.ofp_action_output(port = 6))
911
912 event.connection.send(msg)
913
914
915
916 def launch ():
917
918 global start_time
919
920 core.openflow.addListenerByName("PortStatsReceived",_handle_portstats_received)
921
922 core.openflow.addListenerByName("ConnectionUp", _handle_ConnectionUp)
923
924 core.openflow.addListenerByName("PacketIn",_handle_PacketIn)1.2查看流表项（做完步骤2再回来）
1 ./pox.py lab_controller web messenger messenger.log_service messenger.ajax_transport openflow.of_service poxdesk
然后再火狐里面搜索：http://pox-ip:8000/poxdesk然后点击TableViewer选择s1即00-00-00-00-01就会跳出下图（其中深蓝色的交换机的output的端口就是在5，6的切换，时而还会出现不存在（个人是这认为ox脚本的bug）说明了只有两种切换方式，而另一种（连向4的）不通，说明了网络运行的时候在s1的OUTPUT：4处出现了问题，这个待我日后分析lab_controller.py再说吧。
2.1在mininet文件夹里面创建脚本文件rulemininet.py
1 #!/usr/bin/python
2
3 # coding:utf -8
4
5 from mininet.topo import Topo
6
7 from mininet.net import Mininet
8
9 from mininet.node import CPULimitedHost
10
11 from mininet.link import TCLink
12
13 from mininet.util import dumpNodeConnections
14
15 from mininet.log import setLogLevel
16
17 from mininet.node import Controller
18
19 from mininet.cli import CLI
20
21 from functools import partial
22
23 from mininet.node import RemoteController
24
25 import os
26
27
28 # 创建一个基于拓扑类的MyTopo类使得多交换机连接多个主机和交换机的复杂拓扑
29
30 class MyTopo(Topo):
31
32 "Single switch connected to n hosts."
33 # 构造函数创建5个交换机和6个主机
34
35 def __init__(self):
36
37 Topo.__init__(self)
38
39 s1=self.addSwitch('s1')
40
41 s2=self.addSwitch('s2')
42
43 s3=self.addSwitch('s3')
44
45 s4=self.addSwitch('s4')
46
47 s5=self.addSwitch('s5')
48
49 h1=self.addHost('h1')
50
51 h2=self.addHost('h2')
52
53 h3=self.addHost('h3')
54
55 h4=self.addHost('h4')
56
57 h5=self.addHost('h5')
58
59 h6=self.addHost('h6')
60
61 # 主机1，2，3连接s1
62
63 self.addLink(h1, s1, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
64
65 self.addLink(h2, s1, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
66
67 self.addLink(h3, s1, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
68
69 # 交换机2，3，4连接s1,所以说s1有6个接口
70
71 self.addLink(s1, s2, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
72
73 self.addLink(s1, s3, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
74
75 self.addLink(s1, s4, bw=1, delay='10ms', loss=0, max_queue_size=1000，use_htb=True)
76
77 # 交换机2，3，4连接s5,所以说s5也有6个接口，2，3，4各两个
78
79 self.addLink(s2, s5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
80
81 self.addLink(s3, s5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
82
83 self.addLink(s4, s5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
84
85 # 主机4，5，6连接s5
86
87 self.addLink(s5, h4, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
88
89 self.addLink(s5, h5, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
90
91 self.addLink(s5, h6, bw=1, delay='10ms', loss=0, max_queue_size=1000, use_htb=True)
92
93
94
95 def perfTest():
96
97 # 创建网络并运行简单性能测试
98
99 topo = MyTopo()
100
101
102 net = Mininet(topo=topo, host=CPULimitedHost, link=TCLink, controller=partial(RemoteController, ip='10.0.0.13', port=6633))
103
104 net.start()
105
106 print "Dumping host connections"
107
108 dumpNodeConnections(net.hosts)
109
110 h1,h2,h3=net.get('h1','h2','h3')
111
112 h4,h5,h6=net.get('h4','h5','h6')
113
114 h1.setMAC("0:0:0:0:0:1")
115
116 h2.setMAC("0:0:0:0:0:2")
117
118 h3.setMAC("0:0:0:0:0:3")
119
120 h4.setMAC("0:0:0:0:0:4")
121
122 h5.setMAC("0:0:0:0:0:5")
123
124 h6.setMAC("0:0:0:0:0:6")
125
126 CLI(net)
127
128 net.stop()
129
130
131
132 if __name__ == '__main__':
133
134 setLogLevel('info')
135
136 perfTest()2.2 先打开脚本文件lab_controller.py然后打开rulemininet.py ,分别用两个程序
1 2 cd pox 3 4 ./pox.py lab_controller 5 6 cd mininet 7 8 ./rulemininet.py 9 10 h1 ping -i 0.1 h4
rulemininet.py脚本的显示情况：
然而，pox理论上应当显示的是：
而我的是。。
所以这应当是pox的脚本问题，于是我才使用查看流表项的方式来分析。
总结：
1.学会了使用查看流表项
2.理解这个动态拓扑的原理
posted on 2018-09-11 17:39 李承泽 阅读(...) 评论(...) 编辑 收藏
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