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Dell S3100 Command Line Reference Guide for the Series 9.112.1 - Page 671

interface loopback

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Note: For release 9.4(0.0), the group command is supported only for VLANs and physical interfaces. Example Dell(conf)# interface group ? gigabitethernet GigabitEthernet interface IEEE 802.3z tengigabitethernet TenGigabit Ethernet interface vlan VLAN keyword Dell(conf)# interface group vlan 1 - 2 , tengigabitethernet 1/10 Dell(conf-if-group-vl-1-2,gi-1/10)# no shutdown Dell(conf-if-group-vl-1-2,gi-1/10)# end Related Commands • interface range - configure a range of interfaces. • interface vlan - configures a VLAN. interface loopback Configure a Loopback interface. Syntax interface loopback number To remove a loopback interface, use the no interface loopback number command. Parameters number Enter a number as the interface number. The range is from 0 to 16383. Defaults Command Modes Command History Not configured. CONFIGURATION This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.10(0.0) 9.8(2.0) 9.8(1.0) 9.8(0.0P5) 9.8(0.0P2) 9.7(0.0) 9.2(1.0) 9.0.2.0 8.3.19.0 8.3.11.1 8.3.7.0 8.1.1.0 7.6.1.0 Description Introduced on the S3148. Introduced on the S6100-ON. Introduced on the S3100 series. Introduced on the Z9100-ON. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the S6000-ON. Introduced on the Z9500. Introduced on the S6000. Introduced on the S4820T. Introduced on the Z9000. Introduced on the S4810. Introduced on the E-Series. Introduced on the S-Series. Interfaces 671

Section	Page
Dell Command Line Reference Guide for the S3100 Series 9.11(2.1)	3
About this Guide	41
Objectives	41
Audience	41
Conventions	41
CLI Basics	43
Accessing the Command Line	43
Multiple Configuration Users	43
Obtaining Help	44
Navigating the CLI	45
Using the Keyword no Command	46
Filtering show Commands	46
Enabling Software Features on Devices Using a Command Option	47
feature vrf	47
show feature	48
Command Modes	49
File Management	59
boot system	59
cd	61
copy	62
delete	64
dir	65
format	67
fsck flash	67
mkdir	68
mount nfs	69
rmdir	70
upgrade system	70
rename	72
restore factory-defaults	72
show boot system	75
show bootvar	76
show file-systems	77
show os-version	78
show running-config	80
show startup-config	83
show version	85
upgrade	86
Control and Monitoring	89
banner exec	89
banner login	90
banner motd	92
cam-acl	93
cam-acl-vlan	94
clear average-power	95
clear line	95
configure	96
disable	97
do	98
enable	99
enable optic-info-update interval	100
end	101
exec-timeout	102
exit	103
ftp-server enable	104
ftp-server topdir	105
ftp-server username	106
hostname	107
ip http source-interface	108
ip http vrf	109
ip ftp password	110
ip ftp source-interface	111
ip ftp username	112
ip ftp vrf	113
ip telnet server enable	113
ip telnet server vrf	114
ip telnet source-interface	115
ip telnet vrf	116
ip tftp source-interface	117
ip tftp vrf	118
line	119
login concurrent-session	120
login statistics	121
motd-banner	123
ping	124
reload	127
send	128
service timestamps	129
show alarms	130
show cam-acl-vlan	131
show command-history	131
show cpu-traffic-stats	133
show debugging	134
show environment	135
show inventory	136
show login statistics	138
show memory	140
show processes cpu	141
show processes ipc flow-control	144
show processes memory	146
show software ifm	148
show system	149
show tech-support	153
ssh-peer-stack-unit	156
telnet	157
telnet-peer-stack-unit	158
terminal length	159
traceroute	160
undebug all	162
virtual-ip	163
write	164
802.1X	166
dot1x critical-vlan	167
debug dot1x	168
dot1x auth-fail-vlan	169
dot1x auth-server	170
dot1x auth-type mab-only	171
dot1x authentication (Configuration)	172
dot1x authentication (Interface)	172
dot1x guest-vlan	173
dot1x host-mode	174
dot1x mac-auth-bypass	175
dot1x max-eap-req	176
dot1x max-supplicants	177
dot1x port-control	178
dot1x profile	178
dot1x quiet-period	179
dot1x reauthentication	180
dot1x reauth-max	181
dot1x server-timeout	182
dot1x static-mab	183
dot1x supplicant-timeout	184
dot1x tx-period	185
mac	185
show dot1x cos-mapping interface	186
show dot1x interface	188
show dot1x profile	190
Access Control Lists (ACL)	192
Commands Common to all ACL Types	193
remark	193
show config	195
Common IP ACL Commands	196
access-class	196
clear counters ip access-group	197
ip access-group	198
ip control-plane egress-filter	199
show ip accounting access-list	200
show ip access-lists	202
Standard IP ACL Commands	202
deny	203
ip access-list standard	204
permit	206
resequence access-list	207
seq	208
Extended IP ACL Commands	210
deny	210
deny icmp	212
deny tcp	214
deny udp	217
ip access-list extended	220
permit	221
permit tcp	222
permit udp	225
resequence access-list	228
seq	229
Common MAC Access List Commands	232
clear counters mac access-group	232
mac access-group	233
show mac access-lists	234
show mac accounting access-list	235
Standard MAC ACL Commands	236
deny	236
mac access-list standard	238
permit	239
seq	240
Extended MAC ACL Commands	242
deny	242
mac access-list extended	244
permit	245
IP Prefix List Commands	247
clear ip prefix-list	247
deny	248
ip prefix-list	249
seq	250
show config	251
show ip prefix-list detail	252
show ip prefix-list summary	253
Route Map Commands	254
continue	254
description	255
match as-path	256
match community	257
match interface	258
match ip address	259
match ip next-hop	260
match ip route-source	261
match metric	262
match origin	263
match route-type	264
match tag	265
route-map	266
set as-path	267
set automatic-tag	268
set comm-list delete	269
set community	270
set level	272
set local-preference	273
set metric	274
set metric-type	275
set next-hop	276
set origin	277
set tag	278
set weight	279
show config	280
show route-map	280
AS-Path Commands	281
ip as-path access-list	282
show ip as-path-access-lists	282
IP Community List Commands	283
ip community-list	283
show ip community-lists	284
deny (for Standard IP ACLs)	285
deny (for Extended IP ACLs)	286
seq (for Standard IPv4 ACLs)	288
deny tcp (for Extended IP ACLs)	289
deny udp (for Extended IP ACLs)	290
deny arp (for Extended MAC ACLs)	292
deny icmp (for Extended IP ACLs)	293
deny ether-type (for Extended MAC ACLs)	294
deny (for Standard MAC ACLs)	296
deny (for Extended MAC ACLs)	297
permit (for Standard IP ACLs)	299
permit arp (for Extended MAC ACLs)	300
permit ether-type (for Extended MAC ACLs)	301
permit icmp (for Extended IP ACLs)	303
permit udp (for Extended IP ACLs)	304
permit (for Extended IP ACLs)	306
permit (for Standard MAC ACLs)	307
seq (for Standard MAC ACLs)	308
permit tcp (for Extended IP ACLs)	310
seq arp (for Extended MAC ACLs)	311
seq ether-type (for Extended MAC ACLs)	313
seq (for IP ACLs)	314
seq (for IPv6 ACLs)	315
permit udp (for IPv6 ACLs)	318
permit tcp (for IPv6 ACLs)	319
permit icmp (for IPv6 ACLs)	321
permit (for IPv6 ACLs)	323
deny udp (for IPv6 ACLs)	324
deny tcp (for IPv6 ACLs)	326
deny icmp (for Extended IPv6 ACLs)	328
deny (for IPv6 ACLs)	329
Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)	332
member vlan	332
ip access-group	333
show acl-vlan-group	333
show cam-acl-vlan	335
cam-acl-vlan	336
show cam-usage	336
show running config acl-vlan-group	339
acl-vlan-group	339
show acl-vlan-group detail	340
description (ACL VLAN Group)	341
Bidirectional Forwarding Detection (BFD)	343
bfd all-neighbors	343
bfd disable	345
bfd enable (Configuration)	346
bfd enable (Interface)	346
bfd interval	347
bfd neighbor	348
bfd protocol-liveness	349
ip route bfd	349
ip ospf bfd all-neighbors	350
ipv6 ospf bfd all-neighbors	352
isis bfd all-neighbors	353
neighbor bfd	354
neighbor bfd disable	355
show bfd neighbors	356
vrrp bfd neighbor	358
Border Gateway Protocol	359
BGP IPv4 Commands	359
address-family	359
aggregate-address	360
bgp add-path	362
bgp always-compare-med	363
bgp asnotation	364
bgp bestpath as-path ignore	365
bgp bestpath as-path multipath-relax	366
bgp bestpath med confed	366
bgp bestpath med missing-as-best	367
bgp bestpath router-id ignore	368
bgp client-to-client reflection	369
bgp cluster-id	369
bgp confederation identifier	370
bgp confederation peers	372
bgp connection-retry-timer	373
bgp dampening	373
bgp default local-preference	374
bgp dmzlink-bw	375
bgp enforce-first-as	376
bgp fast-external-fallover	377
bgp four-octet-as-support	378
bgp graceful-restart	379
bgp non-deterministic-med	380
bgp outbound-optimization	381
bgp outbound-optimization	382
bgp recursive-bgp-next-hop	382
bgp regex-eval-optz-disable	383
bgp router-id	384
clear ip bgp	385
clear ip bgp dampening	387
clear ip bgp flap-statistics	388
clear ip bgp peer-group	390
deny bandwidth	391
debug ip bgp	391
debug ip bgp dampening	393
debug ip bgp events	394
debug ip bgp keepalives	395
debug ip bgp notifications	396
debug ip bgp soft-reconfiguration	397
debug ip bgp updates	398
default-metric	399
description	400
maximum-paths	401
neighbor activate	402
neighbor add-path	403
neighbor advertisement-interval	404
neighbor advertisement-start	405
neighbor allowas-in	406
neighbor default-originate	407
neighbor description	408
neighbor distribute-list	409
neighbor ebgp-multihop	410
neighbor fall-over	411
neighbor local-as	412
neighbor maximum-prefix	413
neighbor next-hop-self	414
neighbor password	415
neighbor peer-group (assigning peers)	416
neighbor peer-group (creating group)	417
neighbor peer-group passive	418
neighbor remote-as	419
neighbor remove-private-as	420
neighbor route-map	421
neighbor route-reflector-client	422
neighbor sender-side-loopdetect	424
neighbor send-community	425
neighbor shutdown	426
neighbor soft-reconfiguration inbound	427
neighbor timers	428
neighbor update-source	429
neighbor weight	430
network	431
network backdoor	432
permit bandwidth	433
redistribute	434
redistribute ospf	436
router bgp	437
shutdown all	438
shutdown address-family-ipv4–multicast	438
shutdown address-family-ipv4–unicast	439
shutdown address-family-ipv6–unicast	439
set extcommunity bandwidth	440
show capture bgp-pdu neighbor	440
show config	441
show ip bgp	442
show ip bgp cluster-list	444
show ip bgp community	446
show ip bgp community-list	448
show ip bgp dampened-paths	450
show ip bgp detail	451
show ip bgp extcommunity-list	453
show ip bgp filter-list	454
show ip bgp flap-statistics	456
show ip bgp inconsistent-as	458
show ip bgp neighbors	460
show ip bgp next-hop	463
show ip bgp paths	464
show ip bgp paths community	466
show ip bgp peer-group	467
show ip bgp regexp	469
show ip bgp summary	470
show running-config bgp	473
timers bgp	474
MBGP Commands	475
debug ip bgp dampening	475
distance bgp	476
show ip bgp dampened-paths	477
BGP Extended Communities (RFC 4360)	479
set extcommunity rt	479
set extcommunity soo	480
show ip bgp paths extcommunity	481
show ip extcommunity-list	482
IPv6 BGP Commands	483
clear ip bgp ipv6 unicast soft	483
debug ip bgp ipv6 unicast soft-reconfiguration	484
ipv6 prefix-list	485
neighbor soft-reconfiguration inbound	486
show ipv6 prefix-list	487
IPv6 MBGP Commands	487
show ipv6 mbgproutes	488
Content Addressable Memory (CAM)	489
CAM Profile Commands	489
cam-acl (Configuration)	490
cam-acl-egress	493
cam-optimization	493
show cam-acl	494
show cam-usage	496
test cam-usage	497
Control Plane Policing (CoPP)	500
control-plane-cpuqos	500
service-policy rate-limit-cpu-queues	501
service-policy rate-limit-protocols	502
ip unknown-unicast	503
ipv6 unknown-unicast	503
show cpu-queue rate cp	504
show ip protocol-queue-mapping	505
show ipv6 protocol-queue-mapping	506
show mac protocol-queue-mapping	507
Debugging and Diagnostics	509
Diagnostics and Monitoring Commands	509
logging coredump stack-unit	509
Offline Diagnostic Commands	510
diag stack-unit	510
offline stack-unit	511
online stack-unit	512
Hardware Commands	513
clear hardware stack-unit	513
clear hardware system-flow	514
clear hardware vlan-counters	515
hardware watchdog	516
show hardware mac	516
show hardware ip	517
show hardware stack-unit	518
show hardware buffer interface	526
show hardware counters interface	527
show hardware buffer-stats-snapshot	529
show hardware stack-unit buffer-stats-snapshot (Total Buffer Information)	530
show hardware system-flow	531
show hardware vlan-counters	533
show hardware drops	534
Dynamic Host Configuration Protocol (DHCP)	537
Commands to Configure the System to be a DHCP Server	537
clear ip dhcp	537
debug ip dhcp server	538
debug ipv6 dhcp	539
default-router	539
disable	540
dns-server	541
domain-name	542
excluded-address	542
hardware-address	543
host	544
lease	545
netbios-name-server	546
netbios-node-type	546
network	547
pool	548
show ip dhcp binding	549
show ip dhcp configuration	549
show ip dhcp conflict	550
show ip dhcp server	551
Commands to Configure Secure DHCP	552
arp inspection	552
arp inspection-trust	553
clear ip dhcp snooping	554
clear ipv6 dhcp snooping binding	555
ip dhcp relay	555
ip dhcp snooping	557
ipv6 dhcp snooping	557
ipv6 dhcp snooping vlan	558
ip dhcp snooping binding	559
IPv6 DHCP Snooping Binding	560
ip dhcp snooping database	561
ipv6 dhcp snooping database write-delay	562
ip dhcp snooping database renew	562
ipv6 dhcp snooping database renew	563
ip dhcp snooping trust	564
ipv6 dhcp snooping trust	564
ip dhcp source-address-validation	565
ip dhcp relay information-option	566
ip dhcp snooping verify mac-address	567
ipv6 dhcp snooping verify mac-address	568
ip helper-address	568
ipv6 helper-address	569
show ip dhcp snooping	570
show ipv6 dhcp snooping	572
Commands to Configure DNS	573
ip name-server	573
ip domain-name	574
ip domain-list	575
ip host	576
clear host	577
Equal Cost Multi-Path (ECMP)	578
ecmp-group	578
hash-algorithm	579
ip ecmp-group	581
ip ecmp weighted	582
link-bundle-monitor enable	583
link-bundle-distribution trigger-threshold	584
show config	584
show link-bundle distribution	585
FIPS Cryptography	587
fips mode enable	587
show fips status	588
show ip ssh	588
ssh	590
Force10 Resilient Ring Protocol (FRRP)	593
clear frrp	593
debug frrp	595