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Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 538

bgp default local-preference, bgp enforce-first-as

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Related Commands dependent; therefore, if you configure one parameter, you must configure the parameters in the order they appear in the command. show ip bgp dampened-paths - views the BGP paths. bgp default local-preference Change the default local preference value for routes exchanged between internal BGP peers. C9000 Series Syntax bgp default local-preference value To return to the default value, use the no bgp default local-preference command. Parameters value Enter a number to assign to routes as the degree of preference for those routes. When routes are compared, the higher the degree of preference or local preference value, the more the route is preferred. The range is 0 to 4294967295. The default is 100. Defaults 100 Command Modes ROUTER BGP Command History Version 9.9(0.0) 9.2(1.0) 8.2.1.0 7.4.1.0 Description Introduced on the C9010. Introduced on the Z9500. Introduced on the E-Series ExaScale. Introduced Usage Information The bgp default local-preference command setting is applied by all routers within the AS. bgp enforce-first-as Disable (or enable) enforce-first-as check for updates received from EBGP peers. C9000 Series Syntax bgp enforce-first-as To turn off the default, use the no bgp enforce-first-as command. Defaults Enabled. Command Modes ROUTER BGP 538 Border Gateway Protocol

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