Home » Dell Manuals » Hubs & Switches » Dell C1048P Port Extender » Manual Viewer

Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 1118

Defaults, Command Modes, Command History, 3.19.0, 3.7.0, 1.1.0, 1.1.0, Usage Information

Get Dell C1048P Port Extender PDF manuals and user guides

View all Dell C1048P Port Extender manuals

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

Page 1118 highlights

Defaults 1500 bytes Command Modes INTERFACE Command History This guide is platform-specific. For command information about other platforms, refer to the relevant Dell Networking OS Command Line Reference Guide. The following is a list of the Dell Networking OS version history for this command. Version 9.9(0.0) 9.2(1.0) 8.3.19.0 8.3.7.0 8.1.1.0 6.1.1.0 Description Introduced on the C9010. Introduced on the Z9500. Introduced on the S4820T. Introduced on the S4810. Introduced on the E-Series ExaScale. Introduced on the E-Series. Usage Information When you enter the no mtu command, the system reduces the ip mtu value to 1536 bytes. To return the IP MTU value to the default, use the no ip mtu command. Compensate for Layer 2 header when configuring link MTU on an Ethernet interface or the system may not fragment packets. If the packet includes a Layer 2 header, the difference between the link MTU and IP MTU (the ip mtu command) must be enough bytes to include for the Layer 2 header. Link MTU and IP MTU considerations for Port Channels and VLANs are as follows Port Channels: • All members must have the same link MTU value and the same IP MTU value. • The Port Channel link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values configured on the channel members. For example, if the members have a link MTU of 2100 and an IP MTU 2000, the Port Channel's MTU values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU. VLANs: • All members of a VLAN must have same IP MTU value. • Members can have different Link MTU values. Tagged members must have a link MTU 4 bytes higher than untagged members to account for the packet tag. • The VLAN link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values configured on the VLAN members. For example, the VLAN contains tagged members with Link MTU of 1522 and IP MTU of 1500 and untagged members with Link MTU of 1518 and IP MTU of 1500. The VLAN's Link MTU cannot be higher than 1518 bytes and its IP MTU cannot be higher than 1500 bytes. The following describes the difference between Link MTU and IP MTU. 1118 IPv4 Routing

Section	Page
Dell Networking Command-Line Reference Guide for the C9000 Series Version 9.9(0.0)	3
About this Guide	47
Objectives	47
Audience	48
Conventions	48
Information Icons	48
CLI Basics	49
Accessing the Command Line	49
Multiple Configuration Users	49
Obtaining Help	50
Navigating the CLI	53
Using the Keyword no Command	53
Filtering show Commands	53
Command Modes	54
Control and Monitoring	64
asf-mode	64
banner exec	65
banner login	66
banner motd	68
cam-acl	69
cam-audit linecard	72
clear alarms	73
clear line	73
configure	74
debug cpu-traffic-stats	75
debug ftpserver	76
disable	77
do	78
enable	79
enable optic-info-update interval	80
end	81
exec-timeout	82
exit	83
ftp-server enable	84
ftp-server topdir	85
ftp-server username	86
hostname	87
ip ftp password	88
ip ftp source-interface	89
ip ftp username	91
ip http source-interface	92
ip telnet server enable	93
ip telnet source-interface	93
ip tftp source-interface	95
line	96
logging coredump server	97
ping	98
power on	102
reload	102
send	103
service timestamps	104
show alarms	106
show asf	108
show chassis	109
show command-history	110
show console lp	112
show cpu-traffic-stats	113
show cpu-interface-stats	114
show debugging	118
show environment	119
show inventory	121
show linecard	124
show memory	127
show processes cpu	129
show processes ipc	133
show processes ipc flow-control	137
show processes memory	140
show rpm	149
show software ifm	151
show system linecard	153
show tech-support	154
show util-threshold cpu	168
show util-threshold memory	169
show version	170
telnet	173
terminal length	175
traceroute	176
undebug all	178
upload trace-log	179
util-threshold cpu	180
util-threshold memory	181
virtual-ip	183
write	184
File Management	186
boot system	186
cd	187
copy	189
delete	192
dir	194
format flash	196
mkdir	197
mount nfs	198
pwd	198
rename	199
restore factory-defaults	200
rmdir	201
show boot bmp	202
show boot system	203
show bootvar	204
show file	205
show file-systems	207
show os-version	208
show running-config	212
show startup-config	217
upgrade	218
verify	221
802.1X	223
debug dot1x	224
dot1x auth-fail-vlan	225
dot1x auth-server	226
dot1x auth-type mab-only	226
dot1x authentication (Configuration)	227
dot1x authentication (Interface)	228
dot1x critical-vlan	229
dot1x guest-vlan	230
dot1x host-mode	231
dot1x mac-auth-bypass	232
dot1x max-eap-req	233
dot1x max-supplicants	234
dot1x port-control	234
dot1x profile	235
dot1x quiet-period	236
dot1x reauthentication	237
dot1x reauth-max	238
dot1x server-timeout	238
dot1x static-mab	240
dot1x supplicant-timeout	241
dot1x tx-period	242
mac	242
show dot1x cos-mapping interface	243
show dot1x interface	245
show dot1x profile	248
Access Control Lists (ACL)	249
Commands Common to all ACL Types	249
remark	249
show config	251
Common IP ACL Commands	252
clear counters ip access-group	252
ip access-group	253
ip control-plane egress-filter	254
show ip accounting access-list	255
Standard IP ACL Commands	256
deny	256
ip access-list standard	259
permit	260
resequence access-list	262
resequence prefix-list ipv4	263
seq	264
show ip access-lists	267
Extended IP ACL Commands	268
deny	268
deny icmp	271
deny tcp	275
deny udp	279
ip access-list extended	282
permit	283
permit icmp	285
permit tcp	288
permit udp	291
resequence prefix-list ipv4	294
seq	295
ACL VLAN Group Commands	299
acl-vlan-group	299
cam-acl-vlan	300
description (ACL VLAN Group)	301
ip access-group (ACL VLAN Group)	301
member vlan (ACL VLAN Group)	302
show acl-vlan-group	303
show cam-acl-vlan	304
show running config acl-vlan-group	306
Common MAC ACL Commands	307
clear counters mac access-group	307
mac access-group	308
show mac access-lists	309
show mac accounting access-list	311
Standard MAC ACL Commands	312
deny	312
mac access-list standard	314
permit	315
seq	317
Extended MAC ACL Commands	319
deny	319
mac access-list extended	322
permit	323
seq	326
IP Prefix List Commands	328
clear ip prefix-list	328
deny	329
ip prefix-list	330
permit	331
seq	332
show config	334
show ip prefix-list detail	334
show ip prefix-list summary	335
Route Map Commands	336
continue	337
description	338
match as-path	339
match community	340
match interface	341
match ip address	342
match ip next-hop	343
match ip route-source	344
match metric	345
match origin	346
match route-type	347
match tag	348
route-map	349
set as-path	351
set automatic-tag	352
set comm-list delete	353
set community	354
set level	355
set local-preference	357
set metric	358
set metric-type	359
set next-hop	360
set origin	361
set tag	362
set weight	363
show config	364
show route-map	364
AS-Path Commands	365
ip as-path access-list	365
show ip as-path-access-lists	366
IP Community List Commands	367
ip community-list	367
show ip community-lists	368
Bidirectional Forwarding Detection (BFD)	370
bfd all-neighbors	370
bfd disable	372
bfd enable (Configuration)	373
bfd enable (Interface)	373
bfd interval	374
bfd protocol-liveness	375
ip route bfd	376
ipv6 ospf bfd all-neighbors	377
neighbor bfd	378
neighbor bfd disable	380
show bfd neighbors	381
vrrp bfd	383
Border Gateway Protocol	385
BGP IPv4 Commands	385
address-family	385
aggregate-address	386
bgp add-path	388
bgp always-compare-med	389
bgp asnotation	390
bgp bestpath as-path ignore	391
bgp bestpath as-path multipath-relax	392
bgp bestpath med confed	392
bgp bestpath med missing-as-best	393
bgp bestpath router-id ignore	394
bgp client-to-client reflection	395
bgp cluster-id	395
bgp confederation identifier	396
bgp confederation peers	398
bgp dampening	399
bgp default local-preference	400
bgp dmzlink-bw	401
bgp enforce-first-as	402
bgp fast-external-fallover	403
bgp four-octet-as-support	404
bgp graceful-restart	405
bgp log-neighbor-changes	406
bgp non-deterministic-med	406
bgp recursive-bgp-next-hop	407
bgp regex-eval-optz-disable	408
bgp router-id	410
bgp soft-reconfig-backup	410
capture bgp-pdu neighbor	411
capture bgp-pdu max-buffer-size	412
clear ip bgp	413
clear ip bgp dampening	415
clear ip bgp flap-statistics	416
clear ip bgp peer-group	418
debug ip bgp	419
debug ip bgp dampening	421
debug ip bgp events	422
debug ip bgp keepalives	423
debug ip bgp notifications	424
debug ip bgp soft-reconfiguration	425
debug ip bgp updates	426
default-metric	428
deny bandwidth	428
description	429
distance bgp	430
maximum-paths	431
neighbor activate	432
neighbor add-path	433
neighbor advertisement-interval	434
neighbor advertisement-start	435
neighbor allowas-in	435
neighbor default-originate	436
neighbor description	437
neighbor distribute-list	438
neighbor dmzlink-bw	439
neighbor ebgp-multihop	440
neighbor fall-over	441
neighbor filter-list	442
neighbor graceful-restart	443
neighbor local-as	444
neighbor maximum-prefix	445
neighbor next-hop-self	446
neighbor password	447
neighbor peer-group (assigning peers)	448
neighbor peer-group (creating group)	450
neighbor peer-group passive	451
neighbor remote-as	452
neighbor remove-private-as	453
neighbor route-map	454
neighbor route-reflector-client	455
neighbor send-community	456
neighbor shutdown	457
neighbor soft-reconfiguration inbound	458
neighbor subnet	459
neighbor timers	460
neighbor update-source	461
neighbor weight	462
network	463
network backdoor	465
permit bandwidth	466
redistribute	466
redistribute ospf	468
router bgp	469
set extcommunity bandwidth	470
show capture bgp-pdu neighbor	471
show config	472
show ip bgp	473
show ip bgp cluster-list	475
show ip bgp community	477
show ip bgp community-list	480
show ip bgp dampened-paths	482
show ip bgp detail	484
show ip bgp extcommunity-list	486
show ip bgp filter-list	488
show ip bgp flap-statistics	490
show ip bgp inconsistent-as	492
show ip bgp neighbors	494
show ip bgp next-hop	498
show ip bgp paths	499
show ip bgp paths as-path	501
show ip bgp paths community	502
show ip bgp peer-group	504
show ip bgp regexp	506
show ip bgp summary	508
show running-config bgp	511
timers bgp	512
MBGP Commands	512
debug ip bgp dampening	513
distance bgp	514
show ip bgp dampened-paths	515
BGP Extended Communities (RFC 4360)	517
deny	517
deny regex	518
description	519
ip extcommunity-list	519
match extcommunity	520
permit	521
permit regex	522
set extcommunity rt	523
set extcommunity soo	524
show ip bgp ipv4 extcommunity-list	525
show ip bgp paths extcommunity	527
show ip extcommunity-list	528
show running-config extcommunity-list	528
IPv6 BGP Commands	529
address-family	529
address family ipv6 unicast	530
aggregate-address	531
bgp always-compare-med	532
bgp bestpath as-path ignore	533
bgp bestpath med confed	533
bgp bestpath med missing-as-best	534
bgp client-to-client reflection	534
bgp cluster-id	535
bgp confederation identifier	536
bgp dampening	537
bgp default local-preference	538
bgp enforce-first-as	538
bgp fast-external-fallover	539
bgp four-octet-as-support	540
bgp graceful-restart	540
bgp log-neighbor-changes	541
bgp non-deterministic-med	542
bgp recursive-bgp-next-hop	543
bgp regex-eval-optz-disable	543
bgp router-id	544
bgp soft-reconfig-backup	545
capture bgp-pdu max-buffer-size	546
capture bgp-pdu neighbor (ipv6)	546
clear ip bgp ipv6-address	547
clear ip bgp * (asterisk)	548
clear ip bgp as-number	549
clear ip bgp ipv6 dampening	550
clear ip bgp ipv6 flap-statistics	550
clear ip bgp ipv6 unicast	552
clear ip bgp ipv6 unicast dampening	552
clear ip bgp ipv6 unicast flap-statistics	553
debug ip bgp keepalives	554
debug ip bgp ipv6 dampening	554
debug ip bgp ipv6 unicast peer-group updates	555
debug ip bgp ipv6 unicast dampening	556
debug ip bgp ipv6 unicast updates	556
debug ip bgp notifications	557
debug ip bgp updates	558
default-metric	559
description	559
distance bgp	560
ipv6 prefix-list	561
maximum-paths	561
neighbor activate	562
neighbor advertisement-interval	563
neighbor allowas-in	564
neighbor default-originate	564
neighbor description	565
neighbor distribute-list	566
neighbor ebgp-multihop	567
neighbor fall-over	567
neighbor filter-list	568
neighbor maximum-prefix	569
neighbor next-hop-self	570
neighbor peer-group (assigning peers)	571
neighbor peer-group (creating group)	572
neighbor peer-group passive	573
neighbor remote-as	573
neighbor remove-private-as	574
neighbor route-map	575
neighbor route-reflector-client	576
neighbor send-community	577
neighbor soft-reconfiguration inbound	577
neighbor subnet	578
neighbor shutdown	579
neighbor timers	580
neighbor update-source	581
neighbor weight	581
neighbor X:X:X::X password	582
network	583
network backdoor	584
redistribute	585
redistribute ospf	586
router bgp	587
show capture bgp-pdu neighbor	587
show config	588
show ip bgp next-hop	588
show ip bgp paths	589
show ip bgp paths as-path	590
show ip bgp paths community	590
show ip bgp paths extcommunity	591
show ip bgp regexp	591
show ipv6 prefix-list	592
show ip bgp ipv6 unicast	593
show ip bgp ipv6 unicast cluster-list	593
show ip bgp ipv6 unicast community	594
show ip bgp ipv6 unicast community-list	595
show ip bgp ipv6 unicast dampened-paths	595
show ip bgp ipv6 unicast detail	596
show ip bgp ipv6 unicast extcommunity-list	596
show ip bgp ipv6 unicast filter-list	597
show ip bgp ipv6 unicast flap-statistics	597
show ip bgp ipv6 unicast inconsistent-as	598
show ip bgp ipv6 unicast neighbors	599
show ip bgp ipv6 unicast peer-group	600
show ip bgp ipv6 unicast summary	601
timers bgp	602
IPv6 MBGP Commands	602
show ipv6 mbgproutes	603
Content Addressable Memory (CAM)	604
CAM Profile Commands	604
cam-acl (Configuration)	605
cam-acl-egress	608
cam-acl-egress-pe	608
cam-acl-pe	609
cam-optimization	610
show cam-acl	611
show cam-usage	611
show cam-acl-pe	615
show cam-acl-egress-pe	615
test cam-usage	616
Unified Forwarding Table Modes	618
show hardware forwarding-table mode	618
hardware forwarding-table mode	619
Control Plane Policing (CoPP)	620
clear control-traffic protocol	620
clear control-traffic queue	621
control-plane-cpuqos	622
service-policy rate-limit-cpu-queues	623
service-policy rate-limit-protocols	624
show control-traffic protocol	625
show control-traffic queue	627
show cpu-queue rate	628
show ip protocol-queue-mapping	630
show ipv6 protocol-queue-mapping	631
show mac protocol-queue-mapping	632
show protocol-queue-mapping	633
Data Center Bridging (DCB)	637
DCB Commands	637
dcb-enable	637
PFC Commands	638
clear pfc counters	638

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
1,728
1,729
1,730
1,731
1,732
1,733
1,734
1,735
1,736
1,737
1,738
1,739
1,740
1,741
1,742
1,743
1,744
1,745
1,746
1,747
1,748
1,749
1,750
1,751
1,752
1,753
1,754
1,755
1,756
1,757
1,758
1,759
1,760
1,761
1,762
1,763
1,764
1,765
1,766
1,767
1,768
1,769
1,770
1,771
1,772
1,773
1,774
1,775
1,776
1,777
1,778
1,779
1,780
1,781
1,782
1,783
1,784
1,785
1,786
1,787
1,788
1,789
1,790
1,791
1,792
1,793
1,794
1,795
1,796
1,797
1,798
1,799
1,800
1,801
1,802
1,803
1,804
1,805
1,806
1,807
1,808
1,809
1,810
1,811
1,812
1,813
1,814
1,815
1,816
1,817
1,818
1,819
1,820
1,821
1,822
1,823
1,824
1,825
1,826
1,827
1,828
1,829
1,830
1,831
1,832
1,833
1,834
1,835
1,836
1,837
1,838
1,839
1,840
1,841
1,842
1,843
1,844
1,845
1,846
1,847
1,848
1,849
1,850
1,851
1,852
1,853
1,854
1,855
1,856
1,857
1,858
1,859
1,860
1,861
1,862
1,863
1,864
1,865
1,866
1,867
1,868
1,869
1,870
1,871
1,872
1,873
1,874
1,875
1,876
1,877
1,878
1,879
1,880
1,881
1,882
1,883
1,884
1,885
1,886
1,887
1,888
1,889
1,890
1,891
1,892
1,893
1,894
1,895
1,896
1,897
1,898
1,899
1,900
1,901
1,902
1,903
1,904
1,905
1,906
1,907
1,908
1,909
1,910
1,911
1,912
1,913
1,914
1,915
1,916
1,917
1,918
1,919
1,920
1,921
1,922
1,923
1,924
1,925
1,926
1,927
1,928
1,929
1,930
1,931
1,932
1,933
1,934
1,935
1,936
1,937
1,938
1,939
1,940
1,941
1,942
1,943
1,944
1,945
1,946
1,947
1,948
1,949
1,950
1,951
1,952
1,953
1,954
1,955
1,956
1,957
1,958
1,959
1,960
1,961
1,962
1,963
1,964
1,965
1,966
1,967
1,968
1,969
1,970
1,971
1,972
1,973
1,974
1,975
1,976
1,977
1,978
1,979
1,980
1,981
1,982
1,983
1,984
1,985
1,986
1,987
1,988
1,989
1,990
1,991
1,992
1,993
1,994
1,995
1,996
1,997
1,998
1,999
2,000
2,001
2,002
2,003
2,004
2,005
2,006
2,007
2,008
2,009
2,010
2,011
2,012
2,013
2,014
2,015
2,016
2,017
2,018
2,019
2,020
2,021
2,022
2,023
2,024
2,025
2,026
2,027
2,028
2,029
2,030
2,031
2,032
2,033
2,034
2,035
2,036
2,037
2,038
2,039
2,040
2,041
2,042
2,043
2,044
2,045
2,046
2,047
2,048
2,049
2,050
2,051
2,052
2,053
2,054
2,055
2,056
2,057
2,058
2,059
2,060
2,061
2,062
2,063
2,064
2,065
2,066
2,067
2,068
2,069
2,070
2,071
2,072
2,073
2,074
2,075
2,076
2,077
2,078
2,079
2,080
2,081
2,082
2,083
2,084
2,085
2,086
2,087
2,088
2,089
2,090
2,091
2,092
2,093
2,094
2,095
2,096
2,097
2,098
2,099
2,100
2,101
2,102
2,103
2,104
2,105
2,106
2,107
2,108
2,109
2,110
2,111
2,112
2,113
2,114
2,115
2,116
2,117
2,118
2,119

Match case Limit results 1 per page

Defaults

1500 bytes

Command Modes

INTERFACE

Command History

This guide is platform-specific. For command information about other platforms,

refer to the relevant

Dell Networking OS Command Line Reference Guide

The following is a list of the Dell Networking OS version history for this command.

Version

Description

9.9(0.0)

Introduced on the C9010.

9.2(1.0)

Introduced on the Z9500.

8.3.19.0

Introduced on the S4820T.

8.3.7.0

Introduced on the S4810.

8.1.1.0

Introduced on the E-Series ExaScale.

6.1.1.0

Introduced on the E-Series.

Usage Information

When you enter the

no mtu

command, the system reduces the ip mtu value to

1536 bytes. To return the IP MTU value to the default, use the

no ip mtu

command.

Compensate for Layer 2 header when configuring link MTU on an Ethernet

interface or the system may not fragment packets. If the packet includes a Layer 2

header, the difference between the link MTU and IP MTU (the

ip mtu

command)

must be enough bytes to include for the Layer 2 header.

Link MTU and IP MTU considerations for Port Channels and VLANs are as follows

Port Channels:

•

All members must have the same link MTU value and the same IP MTU value.

•

The Port Channel link MTU and IP MTU must be less than or equal to the link

MTU and IP MTU values configured on the channel members. For example, if

the members have a link MTU of 2100 and an IP MTU 2000, the Port Channel’s

MTU values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU.

VLANs:

•

All members of a VLAN must have same IP MTU value.

•

Members can have different Link MTU values. Tagged members must have a

link MTU 4 bytes higher than untagged members to account for the packet tag.

•

The VLAN link MTU and IP MTU must be less than or equal to the link MTU and

IP MTU values configured on the VLAN members. For example, the VLAN

contains tagged members with Link MTU of 1522 and IP MTU of 1500 and

untagged members with Link MTU of 1518 and IP MTU of 1500. The VLAN’s Link

MTU cannot be higher than 1518 bytes and its IP MTU cannot be higher than

1500 bytes.

The following describes the difference between Link MTU and IP MTU.

1118

IPv4 Routing