Home » Dell Manuals » Hubs & Switches » Dell S3100 » Manual Viewer

Dell S3100 Command Line Reference Guide for the Series 9.100.1 - Page 1567

Designated, Example, Example Brief, Usage Information, Port path cost 4, Port priority 8

Add to My Manuals
Save this manual to your list of manuals

Page 1567 highlights

Field "Designated port..." Description Displays the designated port ID. Example Dell# show spann 0 Executing IEEE compatible Spanning Tree Protocol Bridge Identifier has priority 32768, Address 0001.e800.0a56 Configured hello time 2, max age 20, forward delay 15 We are the root of the spanning tree Current root has priority 32768 address 0001.e800.0a56 Topology change flag set, detected flag set Number of topology changes 1 last change occurred 0:00:05 ago from GigabitEthernet 1/3 Timers:hold 1, topology change 35 hello 2, max age 20, forward_delay 15 Times:hello 1, topology change 1, notification 0, aging 2 Port 26 (GigabitEthernet 1/1) is Forwarding Port path cost 4, Port priority 8, Port Identifier 8.26 Designated root has priority 32768, address 0001.e800.0a56 Designated bridge has priority 32768, address 0001.e800.0a56 Designated port id is 8.26, designated path cost 0 Timers: message age 0, forward_delay 0, hold 0 Number of transitions to forwarding state 1 BPDU: sent:18, received 0 The port is not in the portfast mode Port 27 (GigabitEthernet 1/2) is Forwarding Port path cost 4, Port priority 8, Port Identifier 8.27 Designated root has priority 32768, address 0001.e800.0a56 Designated bridge has priority 32768, address 0001.e800.0a56 Designated port id is 8.27, designated path cost 0 Timers: message age 0, forward_delay 0, hold 0 Number of transitions to forwarding state 1 BPDU: sent:18, received 0 The port is not in the portfast mode Port 28 (GigabitEthernet 1/3) is Forwarding Port path cost 4, Port priority 8, Port Identifier 8.28 Designated root has priority 32768, address 0001.e800.0a56 Designated bridge has priority 32768, address 0001.e800.0a56 Designated port id is 8.28, designated path cost 0 Timers: message age 0, forward_delay 0, hold 0 Number of transitions to forwarding state 1 BPDU: sent:31, received 0 The port is not in the portfast mode Dell# Example (Brief) Dell# show span 0 brief Executing IEEE compatible Spanning Tree Protocol Root ID Priority 32768 Address 0001.e800.0a56 Root Bridge hello time 2, max age 20, forward delay 15 Bridge ID Priority 32768, Address 0001.e800.0a56 Configured hello time 2, max age 20, forward delay 15 Interface Designated Name PortID Prio Cost Sts Cost Bridge ID PortID Gi 1/1 8.26 8 4 FWD 0 32768 0001.e800.0a56 8.26 Gi 1/2 8.27 8 4 FWD 0 32768 0001.e800.0a56 8.27 Gi 1/3 8.28 8 4 FWD 0 32768 0001.e800.0a56 8.28 Dell# Usage Information The following describes the show spanning-tree 0 guard command shown in the example. Spanning Tree Protocol (STP) 1567

Section	Page
Dell Command Line Reference Guide for the S3100 Series 9.10(0.1)	3
About this Guide	39
Objectives	39
Audience	39
Conventions	39
CLI Basics	40
Accessing the Command Line	40
Multiple Configuration Users	40
Obtaining Help	41
Navigating the CLI	42
Using the Keyword no Command	43
Filtering show Commands	43
Enabling Software Features on Devices Using a Command Option	44
feature vrf	44
show feature	45
Command Modes	46
File Management	55
boot system	55
cd	57
copy	57
delete	60
dir	61
format	62
fsck flash	63
mkdir	64
mount nfs	64
rmdir	65
upgrade system	65
rename	67
restore factory-defaults	68
show boot system	70
show bootvar	71
show file-systems	72
show os-version	73
show running-config	75
show startup-config	78
show version	80
upgrade	81
Control and Monitoring	84
banner exec	84
banner login	85
banner motd	87
cam-acl	88
cam-acl-vlan	89
clear line	90
configure	91
disable	92
do	93
enable	94
enable optic-info-update interval	95
end	95
exec-timeout	96
exit	97
ftp-server enable	98
ftp-server topdir	100
ftp-server username	101
hostname	102
ip http source-interface	102
ip http vrf	103
ip ftp password	104
ip ftp source-interface	105
ip ftp username	106
ip ftp vrf	107
ip telnet server enable	108
ip telnet server vrf	108
ip telnet source-interface	109
ip telnet vrf	110
ip tftp source-interface	111
ip tftp vrf	112
line	113
login concurrent-session	114
login statistics	115
motd-banner	117
ping	118
reload	121
send	122
service timestamps	123
show alarms	124
show cam-acl-vlan	125
show command-history	125
show cpu-traffic-stats	127
show debugging	128
show environment	129
show inventory	130
show login statistics	132
show memory	134
show processes cpu	135
show processes ipc flow-control	138
show processes memory	139
show software ifm	142
show system	143
show tech-support	147
ssh-peer-stack-unit	150
telnet	150
telnet-peer-stack-unit	152
terminal length	153
traceroute	153
undebug all	155
virtual-ip	156
write	157
802.1X	159
dot1x critical-vlan	160
debug dot1x	161
dot1x auth-fail-vlan	162
dot1x auth-server	163
dot1x auth-type mab-only	163
dot1x authentication (Configuration)	164
dot1x authentication (Interface)	165
dot1x guest-vlan	166
dot1x host-mode	167
dot1x mac-auth-bypass	168
dot1x max-eap-req	169
dot1x max-supplicants	169
dot1x port-control	170
dot1x profile	171
dot1x quiet-period	172
dot1x reauthentication	172
dot1x reauth-max	173
dot1x server-timeout	174
dot1x static-mab	175
dot1x supplicant-timeout	176
dot1x tx-period	177
mac	178
show dot1x cos-mapping interface	179
show dot1x interface	180
show dot1x profile	182
Access Control Lists (ACL)	184
Commands Common to all ACL Types	185
remark	185
show config	186
Common IP ACL Commands	187
access-class	188
clear counters ip access-group	189
ip access-group	190
ip control-plane egress-filter	191
show ip accounting access-list	192
show ip access-lists	193
Standard IP ACL Commands	194
deny	194
ip access-list standard	196
permit	197
resequence access-list	198
seq	199
Extended IP ACL Commands	201
deny	201
deny icmp	203
deny tcp	205
deny udp	207
ip access-list extended	210
permit	211
permit tcp	212
permit udp	215
resequence access-list	217
seq	218
Common MAC Access List Commands	221
clear counters mac access-group	221
mac access-group	222
show mac access-lists	223
show mac accounting access-list	224
Standard MAC ACL Commands	225
deny	225
mac access-list standard	227
permit	228
seq	229
Extended MAC ACL Commands	231
deny	231
mac access-list extended	233
permit	234
IP Prefix List Commands	236
clear ip prefix-list	236
deny	237
ip prefix-list	238
seq	239
show config	240
show ip prefix-list detail	241
show ip prefix-list summary	242
Route Map Commands	243
continue	243
description	244
match as-path	245
match community	246
match interface	247
match ip address	248
match ip next-hop	249
match ip route-source	250
match metric	251
match origin	252
match route-type	253
match tag	254
route-map	255
set as-path	256
set automatic-tag	257
set comm-list delete	258
set community	259
set level	260
set local-preference	261
set metric	262
set metric-type	263
set next-hop	264
set origin	265
set tag	266
set weight	267
show config	268
show route-map	269
AS-Path Commands	270
ip as-path access-list	270
show ip as-path-access-lists	271
IP Community List Commands	271
ip community-list	271
show ip community-lists	272
deny (for Standard IP ACLs)	273
deny (for Extended IP ACLs)	274
seq (for Standard IPv4 ACLs)	276
deny tcp (for Extended IP ACLs)	277
deny udp (for Extended IP ACLs)	279
deny arp (for Extended MAC ACLs)	280
deny icmp (for Extended IP ACLs)	281
deny ether-type (for Extended MAC ACLs)	282
deny (for Standard MAC ACLs)	284
deny (for Extended MAC ACLs)	285
permit (for Standard IP ACLs)	287
permit arp (for Extended MAC ACLs)	288
permit ether-type (for Extended MAC ACLs)	289
permit icmp (for Extended IP ACLs)	291
permit udp (for Extended IP ACLs)	292
permit (for Extended IP ACLs)	294
permit (for Standard MAC ACLs)	295
seq (for Standard MAC ACLs)	296
permit tcp (for Extended IP ACLs)	298
seq arp (for Extended MAC ACLs)	299
seq ether-type (for Extended MAC ACLs)	301
seq (for IP ACLs)	302
seq (for IPv6 ACLs)	303
permit udp (for IPv6 ACLs)	305
permit tcp (for IPv6 ACLs)	306
permit icmp (for IPv6 ACLs)	307
permit (for IPv6 ACLs)	309
deny udp (for IPv6 ACLs)	310
deny tcp (for IPv6 ACLs)	312
deny icmp (for Extended IPv6 ACLs)	313
deny (for IPv6 ACLs)	314
Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)	317
member vlan	317
ip access-group	318
show acl-vlan-group	318
show cam-acl-vlan	319
cam-acl-vlan	321
show cam-usage	321
show running config acl-vlan-group	324
acl-vlan-group	324
show acl-vlan-group detail	325
description (ACL VLAN Group)	326
Bidirectional Forwarding Detection (BFD)	328
bfd all-neighbors	328
bfd disable	330
bfd enable (Configuration)	330
bfd enable (Interface)	331
bfd interval	332
bfd neighbor	333
bfd protocol-liveness	333
ip route bfd	334
ipv6 ospf bfd all-neighbors	335
isis bfd all-neighbors	336
neighbor bfd	337
neighbor bfd disable	338
show bfd neighbors	339
vrrp bfd neighbor	341
Border Gateway Protocol	342
BGP IPv4 Commands	342
address-family	342
aggregate-address	343
bgp add-path	345
bgp always-compare-med	346
bgp asnotation	347
bgp bestpath as-path ignore	348
bgp bestpath as-path multipath-relax	349
bgp bestpath med confed	349
bgp bestpath med missing-as-best	350
bgp bestpath router-id ignore	351
bgp client-to-client reflection	352
bgp cluster-id	352
bgp confederation identifier	353
bgp confederation peers	355
bgp connection-retry-timer	356
bgp dampening	356
bgp default local-preference	357
bgp dmzlink-bw	358
bgp enforce-first-as	359
bgp fast-external-fallover	360
bgp four-octet-as-support	361
bgp graceful-restart	362
bgp non-deterministic-med	363
bgp recursive-bgp-next-hop	364
bgp regex-eval-optz-disable	365
bgp router-id	366
clear ip bgp	367
clear ip bgp dampening	368
clear ip bgp flap-statistics	370
clear ip bgp peer-group	371
deny bandwidth	372
debug ip bgp	373
debug ip bgp dampening	374
debug ip bgp events	375
debug ip bgp keepalives	376
debug ip bgp notifications	377
debug ip bgp soft-reconfiguration	378
debug ip bgp updates	379
default-metric	381
description	382
maximum-paths	382
neighbor activate	383
neighbor add-path	384
neighbor advertisement-interval	385
neighbor advertisement-start	386
neighbor allowas-in	387
neighbor default-originate	388
neighbor description	389
neighbor distribute-list	390
neighbor ebgp-multihop	391
neighbor fall-over	392
neighbor local-as	393
neighbor maximum-prefix	394
neighbor next-hop-self	395
neighbor password	396
neighbor peer-group (assigning peers)	397
neighbor peer-group (creating group)	398
neighbor peer-group passive	399
neighbor remote-as	400
neighbor remove-private-as	401
neighbor route-map	402
neighbor route-reflector-client	403
neighbor sender-side-loopdetect	404
neighbor send-community	405
neighbor shutdown	406
neighbor soft-reconfiguration inbound	407
neighbor timers	408
neighbor update-source	410
neighbor weight	411
network	412
network backdoor	413
permit bandwidth	414
redistribute	415
redistribute ospf	416
router bgp	417
set extcommunity bandwidth	418
show capture bgp-pdu neighbor	419
show config	420
show ip bgp	421
show ip bgp cluster-list	423
show ip bgp community	425
show ip bgp community-list	427
show ip bgp dampened-paths	429
show ip bgp detail	430
show ip bgp extcommunity-list	432
show ip bgp filter-list	433
show ip bgp flap-statistics	435
show ip bgp inconsistent-as	437
show ip bgp neighbors	438
show ip bgp next-hop	442
show ip bgp paths	443
show ip bgp paths community	445
show ip bgp peer-group	446
show ip bgp regexp	448
show ip bgp summary	449
show running-config bgp	452
timers bgp	453
MBGP Commands	454
debug ip bgp dampening	454
distance bgp	455
show ip bgp dampened-paths	456
BGP Extended Communities (RFC 4360)	457
set extcommunity rt	458
set extcommunity soo	459
show ip bgp paths extcommunity	460
show ip extcommunity-list	461
IPv6 BGP Commands	462
clear ip bgp ipv6 unicast soft	462
debug ip bgp ipv6 unicast soft-reconfiguration	463
ipv6 prefix-list	464
neighbor soft-reconfiguration inbound	464
show ipv6 prefix-list	465
IPv6 MBGP Commands	466
show ipv6 mbgproutes	466
Content Addressable Memory (CAM)	468
CAM Profile Commands	468
cam-acl (Configuration)	469
cam-acl-egress	472
cam-optimization	472
show cam-acl	473
test cam-usage	475
Control Plane Policing (CoPP)	477
control-plane-cpuqos	477
service-policy rate-limit-cpu-queues	478
service-policy rate-limit-protocols	479
ip unknown-unicast	480
ipv6 unknown-unicast	480
show cpu-queue rate cp	481
show ip protocol-queue-mapping	482
show ipv6 protocol-queue-mapping	483
show mac protocol-queue-mapping	484
Debugging and Diagnostics	485
Diagnostics and Monitoring Commands	485
logging coredump stack-unit	485
Offline Diagnostic Commands	486
diag stack-unit	486
offline stack-unit	487
online stack-unit	488
Hardware Commands	489
clear hardware stack-unit	489
clear hardware system-flow	490
clear hardware vlan-counters	491
hardware watchdog	492
show hardware mac	492
show hardware ip	493
show hardware stack-unit	494
show hardware buffer interface	502
show hardware counters interface	503
show hardware buffer-stats-snapshot	505
show hardware stack-unit buffer-stats-snapshot (Total Buffer Information)	506
show hardware system-flow	508
show hardware vlan-counters	510
show hardware drops	510
Dynamic Host Configuration Protocol (DHCP)	513
Commands to Configure the System to be a DHCP Server	513
clear ip dhcp	513
debug ip dhcp server	514
debug ipv6 dhcp	515
default-router	515
disable	516
dns-server	517
domain-name	518
excluded-address	518
hardware-address	519
host	520
lease	521
netbios-name-server	521
netbios-node-type	522
network	523
pool	524
show ip dhcp binding	525
show ip dhcp configuration	525
show ip dhcp conflict	526
show ip dhcp server	527
Commands to Configure Secure DHCP	528
arp inspection	528
arp inspection-trust	529
clear ip dhcp snooping	529
clear ipv6 dhcp snooping binding	531
ip dhcp relay	531
ip dhcp snooping	532
ipv6 dhcp snooping	533
ipv6 dhcp snooping vlan	533
ip dhcp snooping binding	534
IPv6 DHCP Snooping Binding	535
ip dhcp snooping database	536
ipv6 dhcp snooping database write-delay	537
ip dhcp snooping database renew	537
ipv6 dhcp snooping database renew	538
ip dhcp snooping trust	539
ipv6 dhcp snooping trust	539
ip dhcp source-address-validation	540
ip dhcp relay information-option	541
ip dhcp snooping verify mac-address	542
ipv6 dhcp snooping verify mac-address	542
ip helper-address	543
ipv6 helper-address	544
show ip dhcp snooping	544
show ipv6 dhcp snooping	547
Commands to Configure DNS	547
ip name-server	547
ip domain-name	548
ip domain-list	549
ip host	550
clear host	551
Equal Cost Multi-Path (ECMP)	553
ecmp-group	553
hash-algorithm	554
ip ecmp-group	556
ip ecmp weighted	557
link-bundle-monitor enable	558
link-bundle-distribution trigger-threshold	558
show config	559
show link-bundle distribution	560
FIPS Cryptography	561
fips mode enable	561
show fips status	562
show ip ssh	562
ssh	564
Force10 Resilient Ring Protocol (FRRP)	567
clear frrp	567
debug frrp	569
description	570
disable	571
interface	571
member-vlan	573
mode	574
protocol frrp	575
show frrp	576
timer	577
GARP VLAN Registration (GVRP)	579

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1,000
1,001
1,002
1,003
1,004
1,005
1,006
1,007
1,008
1,009
1,010
1,011
1,012
1,013
1,014
1,015
1,016
1,017
1,018
1,019
1,020
1,021
1,022
1,023
1,024
1,025
1,026
1,027
1,028
1,029
1,030
1,031
1,032
1,033
1,034
1,035
1,036
1,037
1,038
1,039
1,040
1,041
1,042
1,043
1,044
1,045
1,046
1,047
1,048
1,049
1,050
1,051
1,052
1,053
1,054
1,055
1,056
1,057
1,058
1,059
1,060
1,061
1,062
1,063
1,064
1,065
1,066
1,067
1,068
1,069
1,070
1,071
1,072
1,073
1,074
1,075
1,076
1,077
1,078
1,079
1,080
1,081
1,082
1,083
1,084
1,085
1,086
1,087
1,088
1,089
1,090
1,091
1,092
1,093
1,094
1,095
1,096
1,097
1,098
1,099
1,100
1,101
1,102
1,103
1,104
1,105
1,106
1,107
1,108
1,109
1,110
1,111
1,112
1,113
1,114
1,115
1,116
1,117
1,118
1,119
1,120
1,121
1,122
1,123
1,124
1,125
1,126
1,127
1,128
1,129
1,130
1,131
1,132
1,133
1,134
1,135
1,136
1,137
1,138
1,139
1,140
1,141
1,142
1,143
1,144
1,145
1,146
1,147
1,148
1,149
1,150
1,151
1,152
1,153
1,154
1,155
1,156
1,157
1,158
1,159
1,160
1,161
1,162
1,163
1,164
1,165
1,166
1,167
1,168
1,169
1,170
1,171
1,172
1,173
1,174
1,175
1,176
1,177
1,178
1,179
1,180
1,181
1,182
1,183
1,184
1,185
1,186
1,187
1,188
1,189
1,190
1,191
1,192
1,193
1,194
1,195
1,196
1,197
1,198
1,199
1,200
1,201
1,202
1,203
1,204
1,205
1,206
1,207
1,208
1,209
1,210
1,211
1,212
1,213
1,214
1,215
1,216
1,217
1,218
1,219
1,220
1,221
1,222
1,223
1,224
1,225
1,226
1,227
1,228
1,229
1,230
1,231
1,232
1,233
1,234
1,235
1,236
1,237
1,238
1,239
1,240
1,241
1,242
1,243
1,244
1,245
1,246
1,247
1,248
1,249
1,250
1,251
1,252
1,253
1,254
1,255
1,256
1,257
1,258
1,259
1,260
1,261
1,262
1,263
1,264
1,265
1,266
1,267
1,268
1,269
1,270
1,271
1,272
1,273
1,274
1,275
1,276
1,277
1,278
1,279
1,280
1,281
1,282
1,283
1,284
1,285
1,286
1,287
1,288
1,289
1,290
1,291
1,292
1,293
1,294
1,295
1,296
1,297
1,298
1,299
1,300
1,301
1,302
1,303
1,304
1,305
1,306
1,307
1,308
1,309
1,310
1,311
1,312
1,313
1,314
1,315
1,316
1,317
1,318
1,319
1,320
1,321
1,322
1,323
1,324
1,325
1,326
1,327
1,328
1,329
1,330
1,331
1,332
1,333
1,334
1,335
1,336
1,337
1,338
1,339
1,340
1,341
1,342
1,343
1,344
1,345
1,346
1,347
1,348
1,349
1,350
1,351
1,352
1,353
1,354
1,355
1,356
1,357
1,358
1,359
1,360
1,361
1,362
1,363
1,364
1,365
1,366
1,367
1,368
1,369
1,370
1,371
1,372
1,373
1,374
1,375
1,376
1,377
1,378
1,379
1,380
1,381
1,382
1,383
1,384
1,385
1,386
1,387
1,388
1,389
1,390
1,391
1,392
1,393
1,394
1,395
1,396
1,397
1,398
1,399
1,400
1,401
1,402
1,403
1,404
1,405
1,406
1,407
1,408
1,409
1,410
1,411
1,412
1,413
1,414
1,415
1,416
1,417
1,418
1,419
1,420
1,421
1,422
1,423
1,424
1,425
1,426
1,427
1,428
1,429
1,430
1,431
1,432
1,433
1,434
1,435
1,436
1,437
1,438
1,439
1,440
1,441
1,442
1,443
1,444
1,445
1,446
1,447
1,448
1,449
1,450
1,451
1,452
1,453
1,454
1,455
1,456
1,457
1,458
1,459
1,460
1,461
1,462
1,463
1,464
1,465
1,466
1,467
1,468
1,469
1,470
1,471
1,472
1,473
1,474
1,475
1,476
1,477
1,478
1,479
1,480
1,481
1,482
1,483
1,484
1,485
1,486
1,487
1,488
1,489
1,490
1,491
1,492
1,493
1,494
1,495
1,496
1,497
1,498
1,499
1,500
1,501
1,502
1,503
1,504
1,505
1,506
1,507
1,508
1,509
1,510
1,511
1,512
1,513
1,514
1,515
1,516
1,517
1,518
1,519
1,520
1,521
1,522
1,523
1,524
1,525
1,526
1,527
1,528
1,529
1,530
1,531
1,532
1,533
1,534
1,535
1,536
1,537
1,538
1,539
1,540
1,541
1,542
1,543
1,544
1,545
1,546
1,547
1,548
1,549
1,550
1,551
1,552
1,553
1,554
1,555
1,556
1,557
1,558
1,559
1,560
1,561
1,562
1,563
1,564
1,565
1,566
1,567
1,568
1,569
1,570
1,571
1,572
1,573
1,574
1,575
1,576
1,577
1,578
1,579
1,580
1,581
1,582
1,583
1,584
1,585
1,586
1,587
1,588
1,589
1,590
1,591
1,592
1,593
1,594
1,595
1,596
1,597
1,598
1,599
1,600
1,601
1,602
1,603
1,604
1,605
1,606
1,607
1,608
1,609
1,610
1,611
1,612
1,613
1,614
1,615
1,616
1,617
1,618
1,619
1,620
1,621
1,622
1,623
1,624
1,625
1,626
1,627
1,628
1,629
1,630
1,631
1,632
1,633
1,634
1,635
1,636
1,637
1,638
1,639
1,640
1,641
1,642
1,643
1,644
1,645
1,646
1,647
1,648
1,649
1,650
1,651
1,652
1,653
1,654
1,655
1,656
1,657
1,658
1,659
1,660
1,661
1,662
1,663
1,664
1,665
1,666
1,667
1,668
1,669
1,670
1,671
1,672
1,673
1,674
1,675
1,676
1,677
1,678
1,679
1,680
1,681
1,682
1,683
1,684
1,685
1,686
1,687
1,688
1,689
1,690
1,691
1,692
1,693
1,694
1,695
1,696
1,697
1,698
1,699
1,700
1,701
1,702
1,703
1,704
1,705
1,706
1,707
1,708
1,709
1,710
1,711
1,712
1,713
1,714
1,715
1,716
1,717
1,718
1,719
1,720
1,721
1,722
1,723
1,724
1,725
1,726
1,727

Match case Limit results 1 per page

Field

Description

“Designated

port...”

Displays the designated port ID.

Example

Dell# show spann 0

Executing IEEE compatible Spanning Tree Protocol

Bridge Identifier has priority 32768, Address 0001.e800.0a56

Configured hello time 2, max age 20, forward delay 15

We are the root of the spanning tree

Current root has priority 32768 address 0001.e800.0a56

Topology change flag set, detected flag set

Number of topology changes 1 last change occurred 0:00:05 ago

from GigabitEthernet 1/3

Timers:hold 1, topology change 35

hello 2, max age 20, forward_delay 15

Times:hello 1, topology change 1, notification 0, aging 2

Port 26 (GigabitEthernet 1/1) is Forwarding

Port path cost 4, Port priority 8, Port Identifier 8.26

Designated root has priority 32768, address 0001.e800.0a56

Designated bridge has priority 32768, address 0001.e800.0a56

Designated port id is 8.26, designated path cost 0

Timers: message age 0, forward_delay 0, hold 0

Number of transitions to forwarding state 1

BPDU: sent:18, received 0

The port is not in the portfast mode

Port 27 (GigabitEthernet 1/2) is Forwarding

Port path cost 4, Port priority 8, Port Identifier 8.27

Designated root has priority 32768, address 0001.e800.0a56

Designated bridge has priority 32768, address 0001.e800.0a56

Designated port id is 8.27, designated path cost 0

Timers: message age 0, forward_delay 0, hold 0

Number of transitions to forwarding state 1

BPDU: sent:18, received 0

The port is not in the portfast mode

Port 28 (GigabitEthernet 1/3) is Forwarding

Port path cost 4, Port priority 8, Port Identifier 8.28

Designated root has priority 32768, address 0001.e800.0a56

Designated bridge has priority 32768, address 0001.e800.0a56

Designated port id is 8.28, designated path cost 0

Timers: message age 0, forward_delay 0, hold 0

Number of transitions to forwarding state 1

BPDU: sent:31, received 0

The port is not in the portfast mode

Dell#

Example (Brief)

Dell# show span 0 brief

Executing IEEE compatible Spanning Tree Protocol

Root ID Priority 32768

Address 0001.e800.0a56

Root Bridge hello time 2, max age 20, forward delay 15

Bridge ID Priority 32768,

Address 0001.e800.0a56

Configured hello time 2, max age 20, forward delay 15

Interface

Designated

Name

PortID Prio Cost Sts Cost Bridge ID

PortID

-------------- ------ ---- ---- --- ----- ------------------

Gi 1/1 8.26

FWD 0

32768 0001.e800.0a56 8.26

Gi 1/2 8.27

FWD 0

32768 0001.e800.0a56 8.27

Gi 1/3 8.28

FWD 0

32768 0001.e800.0a56 8.28

Dell#

Usage Information

The following describes the

show spanning-tree 0 guard

command shown in the example.

Spanning Tree Protocol (STP)

1567