介绍
拓扑如下：
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。
pox脚本
pox脚本lab_controller.py
不得不说这脚本问题是真的多。
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 log = core.getLogger()
24
25 s1_dpid = 0
26
27 s2_dpid = 0
28
29 s3_dpid = 0
30
31 s4_dpid = 0
32
33 s5_dpid = 0
34
35 s1_p1 = 0
36
37 s1_p4 = 0
38
39 s1_p5 = 0
40
41 s1_p6 = 0
42
43 s2_p1 = 0
44
45 s3_p1 = 0
46
47 s4_p1 = 0
48
49 pre_s1_p1 = 0
50
51 pre_s1_p4 = 0
52
53 pre_s1_p5 = 0
54
55 pre_s1_p6 = 0
56
57 pre_s2_p1 = 0
58
59 pre_s3_p1 = 0
60
61 pre_s4_p1 = 0
62
63 turn = 0
64
65
66 def getTheTime(): # fuction to create a timestamp
67
68 flock = time.localtime()
69
70 then = "[%s-%s-%s" % (str(flock.tm_year),
71 str(flock.tm_mon), str(flock.tm_mday))
72
73 if int(flock.tm_hour) < 10:
74
75 hrs = "0%s" % (str(flock.tm_hour))
76
77 else:
78
79 hrs = str(flock.tm_hour)
80
81 if int(flock.tm_min) < 10:
82
83 mins = str(flock.tm_min)
84
85 secs = "0%s" % (str(flock.tm_sec))
86
87 else:
88
89 secs = str(flock.tm_sec)
90
91 then += "]%s.%s.%s" % (hrs, mins, secs)
92
93 return then
94
95
96 def _timer_func():
97 global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid, turn
98
99 # print getTheTime(), "sent the port stats request to s1_dpid"
100
101 if turn == 0:
102 msg = of.ofp_flow_mod()
103
104 msg.command = of.OFPFC_MODIFY_STRICT
105
106 msg.priority = 100
107
108 msg.idle_timeout = 0
109
110 msg.hard_timeout = 0
111
112 msg.match.dl_type = 0x0800
113
114 msg.match.nw_dst = "10.0.0.4"
115
116 msg.actions.append(of.ofp_action_output(port=5))
117
118 core.openflow.getConnection(s1_dpid).send(msg)
119
120 turn = 1
121
122 return
123
124 if turn == 1:
125 msg = of.ofp_flow_mod()
126
127 msg.command = of.OFPFC_MODIFY_STRICT
128
129 msg.priority = 100
130
131 msg.idle_timeout = 0
132
133 msg.hard_timeout = 0
134
135 msg.match.dl_type = 0x0800
136
137 msg.match.nw_dst = "10.0.0.4"
138
139 msg.actions.append(of.ofp_action_output(port=6))
140
141 core.openflow.getConnection(s1_dpid).send(msg)
142
143 turn = 2
144 return
145
146 if turn == 2:
147 msg = of.ofp_flow_mod()
148
149 msg.command = of.OFPFC_MODIFY_STRICT
150
151 msg.priority = 100
152
153 msg.idle_timeout = 0
154
155 msg.hard_timeout = 0
156
157 msg.match.dl_type = 0x0800
158
159 msg.match.nw_dst = "10.0.0.4"
160
161 msg.actions.append(of.ofp_action_output(port=4))
162
163 turn = 0
164
165 return
166
167
168 def _handle_portstats_received(event):
169 global s1_p1, s1_p4, s1_p5, s1_p6, s2_p1, s3_p1, s4_p1
170
171 global pre_s1_p1, pre_s1_p4, pre_s1_p5, pre_s1_p6, pre_s2_p1, pre_s3_p1, pre_s4_p1
172
173 if event.connection.dpid == s1_dpid:
174
175 for f in event.stats:
176
177 if int(f.port_no) < 65534:
178
179 if f.port_no == 1:
180 pre_s1_p1 = s1_p1
181
182 s1_p1 = f.rx_packets
183
184 if f.port_no == 4:
185 pre_s1_p4 = s1_p4
186
187 s1_p4 = f.tx_packets
188
189 # s1_p4=f.tx_bytes
190
191 if f.port_no == 5:
192 pre_s1_p5 = s1_p5
193
194 s1_p5 = f.tx_packets
195
196 if f.port_no == 6:
197 pre_s1_p6 = s1_p6
198
199 s1_p6 = f.tx_packets
200
201 for f in event.stats:
202
203 if int(f.port_no) < 65534:
204
205 if f.port_no == 1:
206 pre_s2_p1 = s2_p1
207
208 s2_p1 = f.rx_packets
209
210 # s2_p1=f.rx_bytes
211
212 if event.connection.dpid == s3_dpid:
213
214 for f in event.stats:
215
216 if int(f.port_no) < 65534:
217
218 if f.port_no == 1:
219 pre_s3_p1 = s3_p1
220
221 s3_p1 = f.rx_packets
222
223 if event.connection.dpid == s4_dpid:
224
225 for f in event.stats:
226
227 if int(f.port_no) < 65534:
228
229 if f.port_no == 1:
230 pre_s4_p1 = s4_p1
231
232 s4_p1 = f.rx_packets
233
234
235 def _handle_ConnectionUp(event):
236 global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid
237
238 print "ConnectionUp: ", dpidToStr(event.connection.dpid)
239
240 # remember the connection dpid for switch
241
242 for m in event.connection.features.ports:
243
244 if m.name == "s1-eth1":
245
246 s1_dpid = event.connection.dpid
247
248 print "s1_dpid=", s1_dpid
249
250 elif m.name == "s2-eth1":
251
252 s2_dpid = event.connection.dpid
253
254 print "s2_dpid=", s2_dpid
255
256 elif m.name == "s3-eth1":
257
258 s3_dpid = event.connection.dpid
259
260 print "s3_dpid=", s3_dpid
261
262 elif m.name == "s4-eth1":
263
264 s4_dpid = event.connection.dpid
265
266 print "s4_dpid=", s4_dpid
267
268 elif m.name == "s5-eth1":
269
270 s5_dpid = event.connection.dpid
271
272 print "s5_dpid=", s5_dpid
273
274 if s1_dpid <> 0 and s2_dpid <> 0 and s3_dpid <> 0 and s4_dpid <> 0:
275 Timer(1, _timer_func, recurring=True)
276
277
278 def _handle_PacketIn(event):
279 global s1_dpid, s2_dpid, s3_dpid, s4_dpid, s5_dpid
280
281 packet = event.parsed
282
283 if event.connection.dpid == s1_dpid:
284
285 a = packet.find(‘arp‘)
286
287 if a and a.protodst == "10.0.0.4":
288 msg = of.ofp_packet_out(data=event.ofp)
289
290 msg.actions.append(of.ofp_action_output(port=4))
291
292 event.connection.send(msg)
293
294 if a and a.protodst == "10.0.0.5":
295 msg = of.ofp_packet_out(data=event.ofp)
296
297 msg.actions.append(of.ofp_action_output(port=5))
298
299 event.connection.send(msg)
300
301 if a and a.protodst == "10.0.0.6":
302 msg = of.ofp_packet_out(data=event.ofp)
303
304 msg.actions.append(of.ofp_action_output(port=6))
305
306 event.connection.send(msg)
307
308 if a and a.protodst == "10.0.0.1":
309 msg = of.ofp_packet_out(data=event.ofp)
310
311 msg.actions.append(of.ofp_action_output(port=1))
312
313 event.connection.send(msg)
314
315 if a and a.protodst == "10.0.0.2":
316 msg = of.ofp_packet_out(data=event.ofp)
317
318 msg.actions.append(of.ofp_action_output(port=2))
319
320 event.connection.send(msg)
321
322 if a and a.protodst == "10.0.0.3":
323 msg = of.ofp_packet_out(data=event.ofp)
324
325 msg.actions.append(of.ofp_action_output(port=3))
326
327 event.connection.send(msg)
328
329 msg = of.ofp_flow_mod()
330
331 msg.priority = 100
332
333 msg.idle_timeout = 0
334
335 msg.hard_timeout = 0
336
337 msg.match.dl_type = 0x0800
338
339 msg.match.nw_dst = "10.0.0.1"
340
341 msg.actions.append(of.ofp_action_output(port=1))
342
343 event.connection.send(msg)
344
345 msg = of.ofp_flow_mod()
346
347 msg.priority = 100
348
349 msg.idle_timeout = 0
350
351 msg.hard_timeout = 0
352
353 msg.match.dl_type = 0x0800
354
355 msg.match.nw_dst = "10.0.0.2"
356
357 msg.actions.append(of.ofp_action_output(port=2))
358
359 event.connection.send(msg)
360
361 msg = of.ofp_flow_mod()
362
363 msg.priority = 100
364
365 msg.idle_timeout = 0
366
367 msg.hard_timeout = 0
368
369 msg.match.dl_type = 0x0800
370
371 msg.match.nw_dst = "10.0.0.3"
372
373 msg.actions.append(of.ofp_action_output(port=3))
374
375 event.connection.send(msg)
376
377 msg = of.ofp_flow_mod()
378
379 msg.priority = 100
380
381 msg.idle_timeout = 0
382
383 msg.hard_timeout = 1
384
385 msg.match.dl_type = 0x0800
386
387 msg.match.nw_dst = "10.0.0.4"
388
389 msg.actions.append(of.ofp_action_output(port=4))
390
391 event.connection.send(msg)
392
393 msg = of.ofp_flow_mod()
394
395 msg.priority = 100
396
397 msg.idle_timeout = 0
398
399 msg.hard_timeout = 0
400
401 msg.match.dl_type = 0x0800
402
403 msg.match.nw_dst = "10.0.0.5"
404
405 msg.actions.append(of.ofp_action_output(port=5))
406
407 event.connection.send(msg)
408
409 msg = of.ofp_flow_mod()
410
411 msg.priority = 100
412
413 msg.idle_timeout = 0
414
415 msg.hard_timeout = 0
416
417 msg.match.dl_type = 0x0800
418
419 msg.match.nw_dst = "10.0.0.6"
420
421 msg.actions.append(of.ofp_action_output(port=6))
422
423 event.connection.send(msg)
424
425
426
427 elif event.connection.dpid == s2_dpid:
428
429 msg = of.ofp_flow_mod()
430
431 msg.priority = 10
432
433 msg.idle_timeout = 0
434
435 msg.hard_timeout = 0
436
437 msg.match.in_port = 1
438
439 msg.match.dl_type = 0x0806
440
441 msg.actions.append(of.ofp_action_output(port=2))
442
443 event.connection.send(msg)
444
445 msg = of.ofp_flow_mod()
446
447 msg.priority = 10
448
449 msg.idle_timeout = 0
450
451 msg.hard_timeout = 0
452
453 msg.match.in_port = 1
454
455 msg.match.dl_type = 0x0800
456
457 msg.actions.append(of.ofp_action_output(port=2))
458
459 event.connection.send(msg)
460
461 msg = of.ofp_flow_mod()
462
463 msg.priority = 10
464
465 msg.idle_timeout = 0
466
467 msg.hard_timeout = 0
468
469 msg.match.in_port = 2
470
471 msg.match.dl_type = 0x0806
472
473 msg.actions.append(of.ofp_action_output(port=1))
474
475 event.connection.send(msg)
476
477 msg = of.ofp_flow_mod()
478
479 msg.priority = 10
480
481 msg.idle_timeout = 0
482
483 msg.hard_timeout = 0
484
485 msg.match.in_port = 2
486
487 msg.match.dl_type = 0x0800
488
489 msg.actions.append(of.ofp_action_output(port=1))
490
491 event.connection.send(msg)
492
493
494
495 elif event.connection.dpid == s3_dpid:
496
497 msg = of.ofp_flow_mod()
498
499 msg.priority = 10
500
501 msg.idle_timeout = 0
502
503 msg.hard_timeout = 0
504
505 msg.match.in_port = 1
506
507 msg.match.dl_type = 0x0806
508
509 msg.actions.append(of.ofp_action_output(port=2))
510
511 event.connection.send(msg)
512
513 msg = of.ofp_flow_mod()
514
515 msg.priority = 10
516
517 msg.idle_timeout = 0
518
519 msg.hard_timeout = 0
520
521 msg.match.in_port = 1
522
523 msg.match.dl_type = 0x0800
524
525 msg.actions.append(of.ofp_action_output(port=2))
526
527 event.connection.send(msg)
528
529 msg = of.ofp_flow_mod()
530
531 msg.priority = 10
532
533 msg.idle_timeout = 0
534
535 msg.hard_timeout = 0
536
537 msg.match.in_port = 2
538
539 msg.match.dl_type = 0x0806
540
541 msg.actions.append(of.ofp_action_output(port=1))
542
543 event.connection.send(msg)
544
545 msg = of.ofp_flow_mod()
546
547 msg.priority = 10
548
549 msg.idle_timeout = 0
550
551 msg.hard_timeout = 0
552
553 msg.match.in_port = 2
554
555 msg.match.dl_type = 0x0800
556
557 msg.actions.append(of.ofp_action_output(port=1))
558
559 event.connection.send(msg)
560
561
562
563 elif event.connection.dpid == s4_dpid:
564
565 msg = of.ofp_flow_mod()
566
567 msg.priority = 10
568
569 msg.idle_timeout = 0
570
571 msg.hard_timeout = 0
572
573 msg.match.in_port = 1
574
575 msg.match.dl_type = 0x0806
576
577 msg.actions.append(of.ofp_action_output(port=2))
578
579 event.connection.send(msg)
580
581 msg = of.ofp_flow_mod()
582
583 msg.priority = 10
584
585 msg.idle_timeout = 0
586
587 msg.hard_timeout = 0
588
589 msg.match.in_port = 1
590
591 msg.match.dl_type = 0x0800
592
593 msg.actions.append(of.ofp_action_output(port=2))
594
595 event.connection.send(msg)
596
597 msg = of.ofp_flow_mod()
598
599 msg.priority = 10
600
601 msg.idle_timeout = 0
602
603 msg.hard_timeout = 0
604
605 msg.match.in_port = 2
606
607 msg.match.dl_type = 0x0806
608
609 msg.actions.append(of.ofp_action_output(port=1))
610
611 event.connection.send(msg)
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 = 2
622
623 msg.match.dl_type = 0x0800
624
625 msg.actions.append(of.ofp_action_output(port=1))
626
627 event.connection.send(msg)
628
629
630
631 elif event.connection.dpid == s5_dpid:
632
633 a = packet.find(‘arp‘)
634
635 if a and a.protodst == "10.0.0.4":
636 msg = of.ofp_packet_out(data=event.ofp)
637
638 msg.actions.append(of.ofp_action_output(port=4))
639
640 event.connection.send(msg)
641
642 if a and a.protodst == "10.0.0.5":
643 msg = of.ofp_packet_out(data=event.ofp)
644
645 msg.actions.append(of.ofp_action_output(port=5))
646
647 event.connection.send(msg)
648
649 if a and a.protodst == "10.0.0.6":
650 msg = of.ofp_packet_out(data=event.ofp)
651
652 msg.actions.append(of.ofp_action_output(port=6))
653
654 event.connection.send(msg)
655
656 if a and a.protodst == "10.0.0.1":
657 msg = of.ofp_packet_out(data=event.ofp)
658
659 msg.actions.append(of.ofp_action_output(port=1))
660
661 event.connection.send(msg)
662
663 if a and a.protodst == "10.0.0.2":
664 msg = of.ofp_packet_out(data=event.ofp)
665
666 msg.actions.append(of.ofp_action_output(port=2))
667
668 event.connection.send(msg)
669
670 if a and a.protodst == "10.0.0.3":
671 msg = of.ofp_packet_out(data=event.ofp)
672
673 msg.actions.append(of.ofp_action_output(port=3))
674
675 event.connection.send(msg)
676
677 msg = of.ofp_flow_mod()
678
679 msg.priority = 100
680
681 msg.idle_timeout = 0
682
683 msg.hard_timeout = 0
684
685 msg.match.dl_type = 0x0800
686
687 msg.match.nw_dst = "10.0.0.1"
688
689 msg.actions.append(of.ofp_action_output(port=1))
690
691 event.connection.send(msg)
692
693 msg = of.ofp_flow_mod()
694
695 msg.priority = 100
696
697 msg.idle_timeout = 0
698
699 msg.hard_timeout = 0
700
701 msg.match.dl_type = 0x0800
702
703 msg.match.nw_dst = "10.0.0.2"
704
705 msg.actions.append(of.ofp_action_output(port=2))
706
707 event.connection.send(msg)
708
709 msg = of.ofp_flow_mod()
710
711 msg.priority = 100
712
713 msg.idle_timeout = 0
714
715 msg.hard_timeout = 0
716
717 msg.match.dl_type = 0x0800
718
719 msg.match.nw_dst = "10.0.0.3"
720
721 msg.actions.append(of.ofp_action_output(port=3))
722
723 event.connection.send(msg)
724
725 msg = of.ofp_flow_mod()
726
727 msg.priority = 100
728
729 msg.idle_timeout = 0
730
731 msg.hard_timeout = 0
732
733 msg.match.dl_type = 0x0800
734
735 msg.match.nw_dst = "10.0.0.4"
736
737 msg.actions.append(of.ofp_action_output(port=4))
738
739 event.connection.send(msg)
740
741 msg = of.ofp_flow_mod()
742
743 msg.priority = 100
744
745 msg.idle_timeout = 0
746
747 msg.hard_timeout = 0
748
749 msg.match.dl_type = 0x0800
750
751 msg.match.nw_dst = "10.0.0.5"
752
753 msg.actions.append(of.ofp_action_output(port=5))
754
755 event.connection.send(msg)
756
757 msg = of.ofp_flow_mod()
758
759 msg.priority = 100
760
761 msg.idle_timeout = 0
762
763 msg.hard_timeout = 0
764
765 msg.match.dl_type = 0x0800
766
767 msg.match.nw_dst = "10.0.0.6"
768
769 msg.actions.append(of.ofp_action_output(port=6))
770
771 event.connection.send(msg)
772
773
774 def launch():
775 global start_time
776
777 core.openflow.addListenerByName("PortStatsReceived", _handle_portstats_received)
778
779 core.openflow.addListenerByName("ConnectionUp", _handle_ConnectionUp)
780
781 core.openflow.addListenerByName("PacketIn", _handle_PacketIn)
mininet脚本
1 #!/usr/bin/python
2
3
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
29
30
31 class MyTopo(Topo):
32
33 "Single switch connected to n hosts."
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
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 self.addLink(s1, s2, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
70
71 self.addLink(s1, s3, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
72
73 self.addLink(s1, s4, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
74
75 self.addLink(s2, s5, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
76
77 self.addLink(s3, s5, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
78
79 self.addLink(s4, s5, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
80
81 self.addLink(s5, h4, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
82
83 self.addLink(s5, h5, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
84
85 self.addLink(s5, h6, bw=1, delay=‘10ms‘, loss=0, max_queue_size=1000, use_htb=True)
86
87
88
89 def perfTest():
90
91 "Create network and run simple performance test"
92
93 topo = MyTopo()
94
95
96 net = Mininet(topo=topo, host=CPULimitedHost, link=TCLink, controller=partial(RemoteController, ip=‘127.0.0.1‘, port=6633))
97
98 net.start()
99
100 print "Dumping host connections"
101
102 dumpNodeConnections(net.hosts)
103
104 h1,h2,h3=net.get(‘h1‘,‘h2‘,‘h3‘)
105
106 h4,h5,h6=net.get(‘h4‘,‘h5‘,‘h6‘)
107
108 h1.setMAC("0:0:0:0:0:1")
109
110 h2.setMAC("0:0:0:0:0:2")
111
112 h3.setMAC("0:0:0:0:0:3")
113
114 h4.setMAC("0:0:0:0:0:4")
115
116 h5.setMAC("0:0:0:0:0:5")
117
118 h6.setMAC("0:0:0:0:0:6")
119
120 CLI(net)
121
122 net.stop()
123
124
125
126 if __name__ == ‘__main__‘:
127
128 setLogLevel(‘info‘)
129
130 perfTest()
如果是在不同的机器使用的pox将控制器ip修改到对应pox所在的ip，我使用的是同一台计算机上的就直接修改成了127.0.0.1。
然后运行pox脚本再运行mininet脚本，得到下图：
mininet运行没啥问题，不过提示0丢包率是非法的emmmmm。 然后pox的内容有些奇怪，咋感觉少了一句的感觉。强迫症，到脚本里填上。在第260行填上一行输出。得到下图：
鉴于有人说，h1 ping不到 h4，就先pingall一下，得到下图：
一切正常。 然后继续实验，在mininet输入h1 ping -i 0.1 h4 每秒从h1传送10个包到h4。
mininet界面到时挺正常的，但是pox界面emmm一片死寂，所以我反复了几次，结果没有变化。估计不是pox出问题了，就是pox脚本写的有问题吧，难不成是我实验环境有问题？
由于对脚本内容了解的不够，所以我先尝试了一下使用poxdesk图形界面来显示结果。先安装一下。
1 cd ./pox/ext 2 git clone https://github.com/MurphyMc/poxdesk 3 cd poxdesk 4 wget http://downloads.sourceforge.net/qooxdoo/qooxdoo-2.0.2-sdk.zip 5 unzip qooxdoo-2.0.2-sdk.zip 6 mv qooxdoo-2.0.2-sdk qx 7 cd poxdesk 8 ./generate.py
我的小水管算是把我卡死了
然后通过命令运行：
1 ./pox.py 脚本名 web messenger messenger.log_service messenger.ajax_transport openflow.of_service poxdesk
然后进入浏览器查看：http://pox-ip:8000/poxdesk。这里pox-ip是pox所在的ip，如果本地就直接使用127.0.0.1就行。
观察s1目标为h4的，发现output一直在5和6之间变化，但是理论来说应该有三种不同的路由规则。结果很尴尬。。。
原文地址：https://www.cnblogs.com/pullself/p/10202584.html
时间： 2024-08-29 17:53:45