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Dell S3100 EMC Command Line Reference Guide for the Series 9.14.2.1 - Page 434

neighbor fall-over

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neighbor fall-over Enable or disable fast fall-over for BGP neighbors. Syntax neighbor {ipv4-address | peer-group-name} fall-over To disable, use the no neighbor {ipv4-address | peer-group-name} fall-over command. Parameters ipv4-address peer-group-name Enter the IP address of the neighbor in dotted decimal format. Enter the name of the peer group. Defaults Command Modes Command History Disabled. ROUTER BGP This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide. Version 9.10(0.1) 9.10(0.0) 9.10(0.0) 9.8(1.0) 9.8(0.0) 9.7(0.0) 9.2(1.0) 9.0.2.0 8.3.19.0 8.3.11.1 8.3.7.0 7.8.1.0 7.7.1.0 7.4.1.0 Description Introduced on the S6010-ON and S4048T-ON. Introduced on the S3148. Introduced on the S6100-ON. Introduced on the Z9100-ON. Introduced on the S3048-ON and S4048-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 S-Series. Introduced on the C-Series. Introduced Usage Information Related Commands When you enable failover, BGP keeps track of IP or IPv6 ability to reach the peer remote address and the peer local address. Whenever either address becomes unreachable (for example, no active route exists in the routing table for the peer IP or IPv6 destination/local address), BGP brings down the session with the peer. • show ip bgp neighbors - display information on the BGP neighbors. 434 Border Gateway Protocol

Section	Page
Dell EMC Command Line Reference Guide for the S3100 Series 9.14.2.1	3
About this Guide	43
Objectives	43
Audience	43
Conventions	43
CLI Basics	44
Accessing the Command Line	44
Multiple Configuration Users	44
Obtaining Help	45
Navigating the CLI	46
Using the no Command	47
Filtering show Commands	47
Enabling Software Features on Devices Using a Command Option	48
feature vrf	48
show feature	49
Command Modes	50
File Management	60
boot system	60
cd	62
copy	63
delete	65
dir	66
format	68
fsck flash	69
mkdir	70
mount nfs	70
rmdir	71
upgrade system	72
rename	75
restore factory-defaults	75
show boot system	78
show bootvar	79
show file-systems	80
show os-version	81
show running-config	83
show startup-config	87
show version	88
upgrade	90
Control and Monitoring	92
banner exec	92
banner login	93
banner motd	95
cam-acl	96
cam-acl-vlan	98
clear average-power	98
clear line	99
configure	100
disable	101
do	102
enable	103
enable optic-info-update interval	104
end	105
exec-timeout	106
exit	107
ftp-server enable	108
ftp-server topdir	109
ftp-server username	110
hostname	111
ip http source-interface	112
ip http vrf	113
ip ftp password	114
ip ftp source-interface	115
ip ftp username	116
ip ftp vrf	117
ip telnet server enable	118
ip telnet server vrf	119
ip telnet source-interface	120
ip telnet vrf	121
ip tftp source-interface	122
ip tftp vrf	123
line	124
login concurrent-session	125
login statistics	126
motd-banner	128
ping	129
reload	132
send	133
service timestamps	134
show alarms	135
show cam-acl-vlan	136
show command-history	137
show cpu-traffic-stats	139
show debugging	140
show environment	141
show inventory	142
show login statistics	144
show memory	146
show processes cpu	147
show processes ipc flow-control	150
show processes memory	152
show reset-reason	154
show software ifm	156
show system	157
show tech-support	159
ssh-peer-stack-unit	162
telnet	163
telnet-peer-stack-unit	165
terminal length	165
traceroute	166
undebug all	168
virtual-ip	169
write	170
802.1X	172
dot1x critical-vlan	173
debug dot1x	174
dot1x auth-fail-vlan	175
dot1x auth-server	176
dot1x auth-type mab-only	177
dot1x authentication (Configuration)	178
dot1x authentication (Interface)	178
dot1x guest-vlan	179
dot1x host-mode	181
dot1x mac-auth-bypass	182
dot1x max-eap-req	182
dot1x max-supplicants	183
dot1x port-control	184
dot1x profile	185
dot1x quiet-period	186
dot1x reauthentication	187
dot1x reauth-max	187
dot1x server-timeout	188
dot1x static-mab	189
dot1x supplicant-timeout	191
dot1x tx-period	191
mac	192
show dot1x cos-mapping interface	193
show dot1x interface	195
show dot1x profile	197
Access Control Lists (ACL)	199
Commands Common to all ACL Types	200
remark	200
show config	202
Common IP ACL Commands	203
access-class	203
clear counters ip access-group	205
ip access-group	205
ip control-plane egress-filter	207
show ip accounting access-list	208
show ip access-lists	210
Standard IP ACL Commands	210
deny	211
ip access-list standard	212
permit	214
resequence access-list	215
seq	217
Extended IP ACL Commands	219
deny	219
deny icmp	221
deny tcp	223
deny udp	227
ip access-list extended	230
permit	231
permit tcp	233
permit udp	236
resequence access-list	239
seq	240
Common MAC Access List Commands	243
clear counters mac access-group	243
mac access-group	244
show mac access-lists	246
show mac accounting access-list	247
Standard MAC ACL Commands	248
deny	248
mac access-list standard	250
permit	251
seq	252
Extended MAC ACL Commands	254
deny	254
mac access-list extended	256
permit	257
IP Prefix List Commands	259
clear ip prefix-list	259
deny	260
ip prefix-list	261
seq	262
show config	264
show ip prefix-list detail	264
show ip prefix-list summary	265
Route Map Commands	266
continue	267
description	268
match as-path	269
match community	270
match interface	271
match ip address	272
match ip next-hop	273
match ip route-source	274
match metric	275
match origin	276
match route-type	277
match tag	278
route-map	279
set as-path	281
set automatic-tag	282
set comm-list delete	283
set community	284
set level	285
set local-preference	286
set metric	287
set metric-type	288
set next-hop	289
set origin	290
set tag	291
set weight	292
show config	293
show route-map	294
AS-Path Commands	295
ip as-path access-list	295
show ip as-path-access-lists	296
IP Community List Commands	297
ip community-list	297
show ip community-lists	298
deny (for Standard IP ACLs)	299
deny (for Extended IP ACLs)	300
seq (for Standard IPv4 ACLs)	302
deny tcp (for Extended IP ACLs)	303
deny udp (for Extended IP ACLs)	305
deny arp (for Extended MAC ACLs)	307
deny icmp (for Extended IP ACLs)	308
deny ether-type (for Extended MAC ACLs)	310
deny (for Standard MAC ACLs)	311
deny (for Extended MAC ACLs)	312
permit (for Standard IP ACLs)	314
permit arp (for Extended MAC ACLs)	315
permit ether-type (for Extended MAC ACLs)	317
permit icmp (for Extended IP ACLs)	318
permit udp (for Extended IP ACLs)	320
permit (for Extended IP ACLs)	322
permit (for Standard MAC ACLs)	324
seq (for Standard MAC ACLs)	325
permit tcp (for Extended IP ACLs)	326
seq arp (for Extended MAC ACLs)	328
seq ether-type (for Extended MAC ACLs)	330
seq (for IP ACLs)	331
seq (for IPv6 ACLs)	333
permit udp (for IPv6 ACLs)	335
permit tcp (for IPv6 ACLs)	337
permit icmp (for IPv6 ACLs)	339
permit (for IPv6 ACLs)	341
deny udp (for IPv6 ACLs)	343
deny tcp (for IPv6 ACLs)	344
deny icmp (for Extended IPv6 ACLs)	347
deny (for IPv6 ACLs)	349
Access Control List (ACL) VLAN Groups and Content Addressable Memory (CAM)	351
member vlan	351
ip access-group	352
show acl-vlan-group	352
show cam-acl-vlan	354
cam-acl-vlan	355
show cam-usage	355
show running config acl-vlan-group	358
acl-vlan-group	358
show acl-vlan-group detail	359
description (ACL VLAN Group)	360
Bidirectional Forwarding Detection (BFD)	362
bfd all-neighbors	362
bfd disable	364
bfd enable (Configuration)	365
bfd enable (Interface)	365
bfd interval	366
bfd protocol-liveness	367
ip route bfd	368
ip ospf bfd all-neighbors	369
ipv6 ospf bfd all-neighbors	370
ipv6 route bfd	371
isis bfd all-neighbors	372
neighbor bfd	374
neighbor bfd disable	375
show bfd neighbors	376
vrrp bfd neighbor	378
Border Gateway Protocol	379
BGP IPv4 Commands	379
address-family	379
aggregate-address	380
bgp add-path	382
bgp always-compare-med	383
bgp asnotation	384
bgp bestpath as-path ignore	385
bgp bestpath as-path multipath-relax	386
bgp bestpath med confed	386
bgp bestpath med missing-as-best	387
bgp bestpath router-id ignore	388
bgp client-to-client reflection	389
bgp cluster-id	390
bgp confederation identifier	391
bgp confederation peers	392
bgp connection-retry-timer	393
bgp dampening	393
bgp default local-preference	395
bgp dmzlink-bw	396
bgp enforce-first-as	397
bgp fast-external-fallover	398
bgp four-octet-as-support	399
bgp graceful-restart	400
bgp non-deterministic-med	401
bgp outbound-optimization	402
bgp outbound-optimization	402
bgp recursive-bgp-next-hop	403
bgp regex-eval-optz-disable	404
bgp router-id	405
clear ip bgp	406
clear ip bgp dampening	408
clear ip bgp flap-statistics	409
clear ip bgp peer-group	411
deny bandwidth	412
debug ip bgp	413
debug ip bgp dampening	414
debug ip bgp events	415
debug ip bgp keepalives	417
debug ip bgp notifications	418
debug ip bgp soft-reconfiguration	419
debug ip bgp updates	420
default-metric	421
description	422
maximum-paths	423
neighbor activate	424
neighbor add-path	425
neighbor advertisement-interval	426
neighbor advertisement-start	427
neighbor allowas-in	428
neighbor default-originate	429
neighbor description	431
neighbor distribute-list	431
neighbor ebgp-multihop	433
neighbor fall-over	434
neighbor local-as	435
neighbor maximum-prefix	436
neighbor next-hop-self	437
neighbor password	438
neighbor peer-group (assigning peers)	439
neighbor peer-group (creating group)	441
neighbor peer-group passive	442
neighbor remote-as	443
neighbor remove-private-as	444
neighbor route-map	445
neighbor route-reflector-client	446
neighbor sender-side-loopdetect	447
neighbor send-community	448
neighbor shutdown	449
neighbor soft-reconfiguration inbound	450
neighbor timers	451
neighbor timers extended	453
neighbor update-source	453
neighbor weight	454
network	455
network backdoor	457
permit bandwidth	458
redistribute	459
redistribute ospf	460
router bgp	461
shutdown all	462
shutdown address-family-ipv4–multicast	463
shutdown address-family-ipv4–unicast	463
shutdown address-family-ipv6–unicast	464
set extcommunity bandwidth	464
show capture bgp-pdu neighbor	465
show config	466
show ip bgp	467
show ip bgp cluster-list	471
show ip bgp community	473
show ip bgp community-list	475
show ip bgp dampened-paths	477
show ip bgp detail	479
show ip bgp extcommunity-list	480
show ip bgp filter-list	482
show ip bgp flap-statistics	483
show ip bgp inconsistent-as	485
show ip bgp neighbors	487
show ip bgp next-hop	491
show ip bgp paths	492
show ip bgp paths community	494
show ip bgp peer-group	495
show ip bgp regexp	497
show ip bgp summary	499
show running-config bgp	501
timers bgp	502
timers bgp extended	503
MBGP Commands	504
debug ip bgp dampening	504
distance bgp	505
show ip bgp dampened-paths	506
BGP Extended Communities (RFC 4360)	508
set extcommunity rt	508
set extcommunity soo	509
show ip bgp paths extcommunity	510
show ip extcommunity-list	511
IPv6 BGP Commands	512
clear ip bgp ipv6 unicast soft	512
debug ip bgp ipv6 unicast soft-reconfiguration	513
ipv6 prefix-list	514
neighbor soft-reconfiguration inbound	515
show ipv6 prefix-list	516
IPv6 MBGP Commands	516
show ipv6 mbgproutes	517
Content Addressable Memory (CAM)	518
CAM Profile Commands	518
cam-acl (Configuration)	518
cam-acl-egress	521
cam-optimization	522
cam-threshold	523
show cam-acl	524
show cam-usage	526
test cam-usage	527
Control Plane Policing (CoPP)	529
control-plane-cpuqos	529
service-policy rate-limit-cpu-queues	530
service-policy rate-limit-protocols	531
ip unknown-unicast	532
ipv6 unknown-unicast	533
show cpu-queue rate cp	533
show ip protocol-queue-mapping	534
show ipv6 protocol-queue-mapping	535
show mac protocol-queue-mapping	536
Debugging and Diagnostics	538
Diagnostics and Monitoring Commands	538
logging coredump stack-unit	538
Offline Diagnostic Commands	539
diag stack-unit	539
offline stack-unit	541
online stack-unit	542
Hardware Commands	543
clear hardware stack-unit	543
clear hardware system-flow	544
clear hardware vlan-counters	545
hardware watchdog	545
show hardware mac	546
show hardware ip	547
show hardware stack-unit	548
show hardware buffer interface	556
show hardware counters interface	557
show hardware buffer-stats-snapshot	559
show hardware stack-unit buffer-stats-snapshot (Total Buffer Information)	560
show hardware system-flow	561
show hardware vlan-counters	563
show hardware drops	564
Dynamic Host Configuration Protocol (DHCP)	567
Commands to Configure the System to be a DHCP Server	567
clear ip dhcp	567
debug ip dhcp server	568
debug ipv6 dhcp	569
default-router	569
disable	570
dns-server	571
domain-name	572
excluded-address	573
hardware-address	574
host-address	574
ip dhcp server	575
lease	576
netbios-name-server	577
netbios-node-type	578
network	579
pool	579
show ip dhcp binding	580
show ip dhcp configuration	581
show ip dhcp conflict	582
show ip dhcp server	583
Commands to Configure Secure DHCP	584
arp inspection	584
arp inspection-limit	585
arp inspection-trust	585
clear ip dhcp snooping	586
clear ipv6 dhcp snooping binding	587
ip dhcp relay	588
ip dhcp snooping	589
ipv6 dhcp snooping	590
ipv6 dhcp snooping vlan	590
ip dhcp snooping binding	591
IPv6 DHCP Snooping Binding	592
ip dhcp snooping database	594
ipv6 dhcp snooping database write-delay	594
ip dhcp snooping database renew	595
ipv6 dhcp snooping database renew	596
ip dhcp snooping trust	596
ipv6 dhcp snooping trust	597
ip dhcp source-address-validation	598
ip dhcp relay information-option	599
ip dhcp relay source-interface	600
ipv6 dhcp relay source-interface	601
ip dhcp snooping verify mac-address	602
ipv6 dhcp snooping verify mac-address	603
ip helper-address	603
ipv6 helper-address	604
show ip dhcp snooping	605
show ipv6 dhcp snooping	607
Commands to Configure DNS	608
ip name-server	608
ip domain-name	609
ip domain-list	610
ip host	611
clear host	612
Equal Cost Multi-Path (ECMP)	613
ecmp-group	613
hash-algorithm	614
ip ecmp-group	616
ip ecmp weighted	617
link-bundle-monitor enable	618
link-bundle-distribution trigger-threshold	619
show config	620
show link-bundle distribution	620