HPE FlexFabric 5950 Series Installation manual

HPE FlexFabric 5950 Switch Series
Layer 3—IP Services Command Reference
Part number: 5200-0824
Software version: Release 6106 and later
Document version: 6W100-20160513

© Copyright 2016 Hewlett Packard Enterprise Development LP
The information contained herein is subject to change without notice. The only warranties for Hewlett Packard
Enterprise products and services are set forth in the express warranty statements accompanying such
products and services. Nothing herein should be construed as constituting an additional warranty. Hewlett
Packard Enterprise shall not be liable for technical or editorial errors or omissions contained herein.
Confidential computer software. Valid license from Hewlett Packard Enterprise required for possession, use, or
copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software
Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor’s
standard commercial license.
Links to third-party websites take you outside the Hewlett Packard Enterprise website. Hewlett Packard
Enterprise has no control over and is not responsible for information outside the Hewlett Packard Enterprise
website.
Acknowledgments
Intel®, Itanium®, Pentium®, Intel Inside®, and the Intel Inside logo are trademarks of Intel Corporation in the
United States and other countries.
Microsoft® and Windows® are trademarks of the Microsoft group of companies.
Adobe® andAcrobat® are trademarks ofAdobe Systems Incorporated.
Java and Oracle are registered trademarks of Oracle and/or its affiliates.
UNIX® is a registered trademark of The Open Group.

i
Contents
ARP commands······························································································1
arp check enable········································································································································1
arp check log enable··································································································································1
arp max-learning-num································································································································2
arp max-learning-number···························································································································3
arp mode uni··············································································································································4
arp multiport···············································································································································4
arp static·····················································································································································5
arp timer aging···········································································································································7
display arp··················································································································································7
display arp ip-address······························································································································10
display arp entry-limit·······························································································································11
display arp timer aging·····························································································································11
display arp vpn-instance ··························································································································11
reset arp···················································································································································12
Gratuitous ARP commands ··········································································14
arp ip-conflict log prompt··························································································································14
arp send-gratuitous-arp····························································································································14
gratuitous-arp-learning enable·················································································································15
gratuitous-arp-sending enable ·················································································································16
Proxy ARP commands··················································································17
display local-proxy-arp·····························································································································17
display proxy-arp······································································································································17
local-proxy-arp enable······························································································································18
proxy-arp enable······································································································································19
ARP snooping commands ············································································20
arp snooping enable·································································································································20
display arp snooping································································································································20
reset arp snooping ···································································································································21
ARP fast-reply commands············································································23
arp fast-reply enable ································································································································23
IP addressing commands ·············································································24
display ip interface ···································································································································24
display ip interface brief ···························································································································26
ip address·················································································································································27
ip address unnumbered ···························································································································28
DHCP commands·························································································30
Common DHCP commands·····························································································································30
dhcp client-detect·····································································································································30
dhcp dscp·················································································································································30
dhcp enable··············································································································································31
dhcp log enable········································································································································31
dhcp select···············································································································································32
DHCP server commands ·································································································································33
address range··········································································································································33
bims-server ··············································································································································34
bootfile-name ···········································································································································35
class ip-pool·············································································································································35
class option-group····································································································································36
class range···············································································································································37
default ip-pool···········································································································································38

ii
dhcp apply-policy ·····································································································································39
dhcp class················································································································································39
dhcp option-group····································································································································40
dhcp policy···············································································································································41
dhcp server always-broadcast ·················································································································42
dhcp server apply ip-pool·························································································································42
dhcp server bootp ignore ·························································································································43
dhcp server bootp reply-rfc-1048·············································································································43
dhcp server database filename················································································································44
dhcp server database update interval······································································································45
dhcp server database update now···········································································································46
dhcp server database update stop···········································································································47
dhcp server forbidden-ip ··························································································································47
dhcp server ip-pool···································································································································48
dhcp server ping packets·························································································································49
dhcp server ping timeout··························································································································50
dhcp server relay information enable·······································································································50
display dhcp server conflict······················································································································51
display dhcp server database ··················································································································52
display dhcp server expired ·····················································································································53
display dhcp server free-ip·······················································································································53
display dhcp server ip-in-use ···················································································································55
display dhcp server pool ··························································································································56
display dhcp server statistics ···················································································································58
dns-list······················································································································································60
domain-name···········································································································································60
expired ·····················································································································································61
forbidden-ip··············································································································································62
gateway-list··············································································································································63
if-match ····················································································································································64
ip-in-use threshold····································································································································66
nbns-list····················································································································································67
netbios-type··············································································································································67
network·····················································································································································68
next-server···············································································································································69
option ·······················································································································································70
reset dhcp server conflict·························································································································71
reset dhcp server expired·························································································································72
reset dhcp server ip-in-use·······················································································································72
reset dhcp server statistics·······················································································································73
static-bind·················································································································································73
tftp-server domain-name··························································································································74
tftp-server ip-address·······························································································································75
valid class·················································································································································76
verify class ···············································································································································76
voice-config··············································································································································77
vpn-instance·············································································································································78
DHCP relay agent commands ·························································································································79
dhcp relay check mac-address ················································································································79
dhcp relay check mac-address aging-time·······························································································79
dhcp relay client-information record·········································································································80
dhcp relay client-information refresh········································································································81
dhcp relay client-information refresh enable····························································································81
dhcp relay dhcp-server timeout················································································································82
dhcp relay gateway··································································································································83
dhcp relay information circuit-id ···············································································································84
dhcp relay information enable··················································································································85
dhcp relay information remote-id··············································································································86
dhcp relay information strategy················································································································87
dhcp relay master-server switch-delay·····································································································88
dhcp relay release ip································································································································89
dhcp relay server-address························································································································89

iii
dhcp relay server-address algorithm········································································································90
dhcp-server timeout ·································································································································91
dhcp smart-relay enable···························································································································91
display dhcp relay check mac-address····································································································92
display dhcp relay client-information········································································································92
display dhcp relay information··················································································································94
display dhcp relay server-address ···········································································································95
display dhcp relay statistics······················································································································96
gateway-list··············································································································································97
master-server switch-delay······················································································································98
remote-server···········································································································································98
remote-server algorithm···························································································································99
reset dhcp relay client-information·········································································································100
reset dhcp relay statistics·······················································································································100
DHCP client commands·································································································································101
dhcp client dad enable···························································································································101
dhcp client dscp ·····································································································································101
dhcp client identifier ·······························································································································102
display dhcp client··································································································································103
ip address dhcp-alloc·····························································································································105
DHCP snooping commands···························································································································106
dhcp snooping binding database filename·····························································································106
dhcp snooping binding database update interval···················································································107
dhcp snooping binding database update now························································································108
dhcp snooping binding record················································································································109
dhcp snooping check mac-address········································································································109
dhcp snooping check request-message·································································································110
dhcp snooping deny·······························································································································110
dhcp snooping enable····························································································································111
dhcp snooping information circuit-id·······································································································112
dhcp snooping information enable·········································································································113
dhcp snooping information remote-id·····································································································114
dhcp snooping information strategy·······································································································115
dhcp snooping log enable······················································································································116
dhcp snooping max-learning-num··········································································································117
dhcp snooping rate-limit·························································································································117
dhcp snooping trust································································································································118
display dhcp snooping binding···············································································································118
display dhcp snooping binding database·······························································································119
display dhcp snooping information·········································································································120
display dhcp snooping packet statistics·································································································121
display dhcp snooping trust····················································································································122
reset dhcp snooping binding··················································································································122
reset dhcp snooping packet statistics ····································································································123
BOOTP client commands ······························································································································123
display bootp client·································································································································123
ip address bootp-alloc····························································································································124
DNS commands··························································································126
display dns domain ································································································································126
display dns host ·····································································································································126
display dns server··································································································································128
display ipv6 dns server···························································································································129
dns domain·············································································································································129
dns dscp·················································································································································130
dns proxy enable····································································································································131
dns server ··············································································································································131
dns source-interface·······························································································································132
dns spoofing···········································································································································133
dns trust-interface ··································································································································134
ip host·····················································································································································134
ipv6 dns dscp·········································································································································135

iv
ipv6 dns server·······································································································································136
ipv6 dns spoofing···································································································································137
ipv6 host·················································································································································138
reset dns host·········································································································································138
DDNS commands·······················································································140
ddns apply policy····································································································································140
ddns dscp···············································································································································140
ddns policy·············································································································································141
display ddns policy·································································································································142
interval····················································································································································143
method···················································································································································144
password················································································································································145
ssl-client-policy·······································································································································146
url···························································································································································146
username···············································································································································148
Basic IP forwarding commands ··································································150
display fib···············································································································································150
ip forwarding-table save·························································································································151
Load sharing commands·············································································153
display ip load-sharing path ···················································································································153
ip load-sharing mode······························································································································154
Fast forwarding commands·········································································156
display ip fast-forwarding aging-time······································································································156
display ip fast-forwarding cache·············································································································156
display ip fast-forwarding fragcache·······································································································157
ip fast-forwarding aging-time··················································································································158
ip fast-forwarding load-sharing···············································································································158
reset ip fast-forwarding cache················································································································159
IPv4 adjacency table commands ································································160
display adjacent-table ····························································································································160
IPv6 adjacency table commands ································································162
display ipv6 adjacent-table·····················································································································162
IRDP commands·························································································164
ip irdp ·····················································································································································164
ip irdp address········································································································································164
ip irdp lifetime·········································································································································165
ip irdp interval·········································································································································166
ip irdp multicast······································································································································166
ip irdp preference···································································································································167
IP performance optimization commands·····················································168
display icmp statistics·····························································································································168
display ip statistics ·································································································································168
display rawip ··········································································································································170
display rawip verbose·····························································································································170
display tcp··············································································································································173
display tcp statistics ·······························································································································174
display tcp verbose ································································································································176
display udp·············································································································································179
display udp statistics······························································································································180
display udp verbose·······························································································································180
ip forward-broadcast ······························································································································183
ip icmp error-interval ······························································································································184
ip icmp fragment discarding···················································································································184
ip icmp source········································································································································185

v
ip mtu ·····················································································································································185
ip reassemble local enable·····················································································································186
ip redirects enable··································································································································187
ip ttl-expires enable································································································································187
ip unreachables enable··························································································································188
reset ip statistics·····································································································································189
reset tcp statistics···································································································································190
reset udp statistics ·································································································································190
tcp mss···················································································································································190
tcp path-mtu-discovery···························································································································191
tcp syn-cookie enable ····························································································································192
tcp timer fin-timeout································································································································192
tcp timer syn-timeout······························································································································193
tcp window ·············································································································································194
UDP helper commands···············································································195
display udp-helper interface···················································································································195
reset udp-helper statistics······················································································································195
udp-helper broadcast-map·····················································································································196
udp-helper enable··································································································································197
udp-helper port·······································································································································197
udp-helper server···································································································································198
IPv6 basics commands···············································································200
display ipv6 fib········································································································································200
display ipv6 icmp statistics·····················································································································201
display ipv6 interface······························································································································202
display ipv6 interface prefix····················································································································206
display ipv6 neighbors····························································································································207
display ipv6 neighbors count··················································································································209
display ipv6 neighbors entry-limit···········································································································209
display ipv6 neighbors vpn-instance······································································································210
display ipv6 pathmtu ······························································································································211
display ipv6 prefix···································································································································212
display ipv6 rawip···································································································································213
display ipv6 rawip verbose·····················································································································214
display ipv6 statistics······························································································································216
display ipv6 tcp·······································································································································218
display ipv6 tcp verbose·························································································································218
display ipv6 udp ·····································································································································222
display ipv6 udp verbose························································································································223
ipv6 address···········································································································································225
ipv6 address anycast ·····························································································································226
ipv6 address auto···································································································································227
ipv6 address auto link-local····················································································································227
ipv6 address eui-64································································································································228
ipv6 address link-local····························································································································229
ipv6 address prefix-number····················································································································230
ipv6 extension-header drop enable········································································································231
ipv6 hop-limit··········································································································································231
ipv6 hoplimit-expires enable···················································································································232
ipv6 icmpv6 error-interval·······················································································································232
ipv6 icmpv6 multicast-echo-reply enable·······························································································233
ipv6 icmpv6 source ································································································································234
ipv6 mtu··················································································································································234
ipv6 nd autoconfig managed-address-flag·····························································································235
ipv6 nd autoconfig other-flag··················································································································236
ipv6 nd dad attempts······························································································································237
ipv6 nd ns retrans-timer ·························································································································237
ipv6 nd nud reachable-time····················································································································238
ipv6 nd ra halt·········································································································································239
ipv6 nd ra hop-limit unspecified··············································································································239

vi
ipv6 nd ra interval···································································································································240
ipv6 nd ra no-advlinkmtu························································································································240
ipv6 nd ra prefix······································································································································241
ipv6 nd ra prefix default··························································································································242
ipv6 nd ra router-lifetime ························································································································243
ipv6 nd router-preference·······················································································································244
ipv6 neighbor··········································································································································245
ipv6 neighbor link-local minimize ···········································································································246
ipv6 neighbor stale-aging·······················································································································246
ipv6 neighbors max-learning-num··········································································································247
ipv6 pathmtu···········································································································································248
ipv6 pathmtu age····································································································································248
ipv6 prefer temporary-address···············································································································249
ipv6 prefix···············································································································································250
ipv6 reassemble local enable·················································································································251
ipv6 redirects enable······························································································································251
ipv6 temporary-address ·························································································································252
ipv6 unreachables enable······················································································································253
local-proxy-nd enable·····························································································································253
proxy-nd enable ·····································································································································254
reset ipv6 neighbors·······························································································································255
reset ipv6 pathmtu··································································································································255
reset ipv6 statistics·································································································································256
DHCPv6 commands ···················································································257
Common DHCPv6 commands·······················································································································257
display ipv6 dhcp duid····························································································································257
ipv6 dhcp dscp·······································································································································257
ipv6 dhcp log enable······························································································································258
ipv6 dhcp select ·····································································································································258
DHCPv6 server commands ···························································································································259
address range········································································································································259
class pool···············································································································································260
default pool·············································································································································261
display ipv6 dhcp option-group ··············································································································262
display ipv6 dhcp pool····························································································································264
display ipv6 dhcp prefix-pool··················································································································266
display ipv6 dhcp server·························································································································268
display ipv6 dhcp server conflict ············································································································269
display ipv6 dhcp server database·········································································································270
display ipv6 dhcp server expired············································································································270
display ipv6 dhcp server ip-in-use··········································································································271
display ipv6 dhcp server pd-in-use·········································································································273
display ipv6 dhcp server statistics··········································································································275
dns-server··············································································································································277
domain-name·········································································································································278
if-match ··················································································································································278
ipv6 dhcp apply-policy····························································································································280
ipv6 dhcp class·······································································································································281
ipv6 dhcp option-group···························································································································282
ipv6 dhcp policy······································································································································282
ipv6 dhcp pool········································································································································283
ipv6 dhcp prefix-pool······························································································································284
ipv6 dhcp server·····································································································································285
ipv6 dhcp server apply pool ···················································································································286
ipv6 dhcp server database filename ······································································································287
ipv6 dhcp server database update interval ····························································································288
ipv6 dhcp server database update now ·································································································289
ipv6 dhcp server database update stop·································································································290
ipv6 dhcp server forbidden-address·······································································································290
ipv6 dhcp server forbidden-prefix···········································································································291
network···················································································································································292

vii
option ·····················································································································································294
option-group···········································································································································295
prefix-pool ··············································································································································295
reset ipv6 dhcp server conflict················································································································296
reset ipv6 dhcp server expired···············································································································297
reset ipv6 dhcp server ip-in-use·············································································································297
reset ipv6 dhcp server pd-in-use············································································································298
reset ipv6 dhcp server statistics·············································································································299
sip-server ···············································································································································299
static-bind···············································································································································300
temporary address range·······················································································································301
vpn-instance···········································································································································302
DHCPv6 relay agent commands····················································································································303
display ipv6 dhcp relay server-address··································································································303
display ipv6 dhcp relay statistics············································································································304
gateway-list············································································································································306
ipv6 dhcp relay gateway·························································································································307
ipv6 dhcp relay interface-id····················································································································307
ipv6 dhcp relay server-address··············································································································308
remote-server·········································································································································309
reset ipv6 dhcp relay statistics···············································································································310
DHCPv6 snooping commands·······················································································································310
display ipv6 dhcp snooping binding ·······································································································310
display ipv6 dhcp snooping binding database························································································311
display ipv6 dhcp snooping packet statistics··························································································312
display ipv6 dhcp snooping trust············································································································312
ipv6 dhcp snooping binding database filename·····················································································313
ipv6 dhcp snooping binding database update interval···········································································315
ipv6 dhcp snooping binding database update now················································································315
ipv6 dhcp snooping binding record ········································································································316
ipv6 dhcp snooping check request-message·························································································316
ipv6 dhcp snooping deny ·······················································································································317
ipv6 dhcp snooping enable ····················································································································318
ipv6 dhcp snooping log enable···············································································································318
ipv6 dhcp snooping max-learning-num··································································································319
ipv6 dhcp snooping option interface-id enable·······················································································319
ipv6 dhcp snooping option interface-id string·························································································320
ipv6 dhcp snooping option remote-id enable ·························································································321
ipv6 dhcp snooping option remote-id string ···························································································321
ipv6 dhcp snooping rate-limit ·················································································································322
ipv6 dhcp snooping trust························································································································323
reset ipv6 dhcp snooping binding···········································································································323
reset ipv6 dhcp snooping packet statistics·····························································································324
IPv6 fast forwarding commands··································································325
display ipv6 fast-forwarding aging-time··································································································325
display ipv6 fast-forwarding cache·········································································································325
ipv6 fast-forwarding aging-time··············································································································326
ipv6 fast-forwarding load-sharing···········································································································327
reset ipv6 fast-forwarding cache············································································································327
Tunneling commands··················································································329
bandwidth···············································································································································329
default ····················································································································································329
description··············································································································································330
destination··············································································································································330
display interface tunnel ··························································································································331
interface tunnel·······································································································································335
mtu·························································································································································336
reset counters interface tunnel···············································································································337
service····················································································································································337
shutdown················································································································································338

viii
source ····················································································································································338
tunnel dfbit enable··································································································································339
tunnel discard ipv4-compatible-packet···································································································340
tunnel tos················································································································································340
tunnel ttl··················································································································································341
GRE commands··························································································343
keepalive················································································································································343
Document conventions and icons·······························································344
Conventions···················································································································································344
Network topology icons··································································································································345
Support and other resources ······································································346
Accessing Hewlett Packard Enterprise Support ····························································································346
Accessing updates·········································································································································346
Websites ················································································································································347
Customer self repair·······························································································································347
Remote support······································································································································347
Documentation feedback ·······················································································································347
Index···········································································································349

1
ARP commands
arp check enable
Use arp check enable to enable dynamic ARP entry check.
Use undo arp check enable to disable dynamicARP entry check.
Syntax
arp check enable
undo arp check enable
Default
Dynamic ARP entry check is enabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
Dynamic ARP entry check disables a device from supporting dynamic ARP entries with multicast
MAC addresses. The device cannot learn dynamic ARPentries containing multicast MAC addresses.
You cannot manually add static ARP entries that contain multicast MAC addresses.
When dynamic ARP entry check is disabled, ARP entries containing multicast MAC addresses are
supported. The device can learn dynamic ARPentries containing multicast MAC addresses obtained
from the ARP packets sourced from a unicast MAC address. You can also manually add static ARP
entries containing multicast MAC addresses.
Examples
# Enable dynamic ARP entry check.
<Sysname> system-view
[Sysname] arp check enable
arp check log enable
Use arp check log enable to enable theARP logging feature.
Use undo arp check log enable to disable theARP logging feature.
Syntax
arp check log enable
undo arp check log enable
Default
ARP logging is disabled.
Views
System view
Predefined user roles
network-admin

2
Usage guidelines
This feature enables a device to log ARP events when ARP cannot resolve IP addresses correctly.
The device can log the followingARP events:
•On a proxy ARP-disabled interface, the target IPaddress of a received ARPpacket is not one of
the following IP addresses:
{The IP address of the receiving interface.
{The virtual IP address of the VRRP group.
•The sender IPaddress of a receivedARPreply conflicts with one of the following IPaddresses:
{The IP address of the receiving interface.
{The virtual IP address of the VRRP group.
The device sends ARPlog messages to the information center. You can use the info-center source
command to specify the log output rules for the information center. For more information about
information center, see Network Management and Monitoring Configuration Guide.
The device can generate a large number of ARP logs. To conserve system resources, enable ARP
logging only when you are auditing or troubleshooting ARP events.
Examples
# Enable ARP logging.
<Sysname> system-view
[Sysname] arp check log enable
arp max-learning-num
Use arp max-learning-num to set the maximum number of dynamic ARP entries that an interface
can learn.
Use undo arp max-learning-num to restore the default.
Syntax
arp max-learning-num max-number
undo arp max-learning-num
Default
The maximum number of dynamicARPentries that an interface can learn depends on the ARPtable
capacity set by using the switch-mode command. For information about the switch-mode
command, see Fundamentals Command Reference.
Views
Layer 2 Ethernet interface
Layer 2 aggregate interface view
Layer 3 Ethernet interface/subinterface view
Layer 3 aggregate interface/aggregate subinterface view
Virtual switch interface view
VLAN interface view
Predefined user roles
network-admin
Parameters
max-number: Specifies the maximum number of dynamic ARP entries for an interface. The value
range for this argument is 0 to N. The value for N depends on the ARP table capacity.

3
Usage guidelines
An interface can dynamically learnARP entries. To prevent an interface from holding too many ARP
entries, you can set the maximum number of dynamic ARPentries that the interface can learn. When
the maximum number is reached, the interface stops learningARP entries.
When the number argument is set to 0, the interface is disabled from learning dynamicARP entries.
Examples
# Specify VLAN-interface 40 to learn a maximum of 10 dynamicARP entries.
<Sysname> system-view
[Sysname] interface vlan-interface 40
[Sysname-Vlan-interface40] arp max-learning-num 10
# Specify HundredGigE 1/0/1 to learn a maximum of 10 dynamic ARP entries.
<Sysname> system-view
[Sysname] interface hundredgige 1/0/1
[Sysname-HundredGigE1/0/1] arp max-learning-num 10
# Specify Layer 2 aggregate interface Bridge-Aggregation 1 to learn a maximum of 10 dynamic ARP
entries.
<Sysname> system-view
[Sysname] interface bridge-aggregation 1
[Sysname-Bridge-Aggregation1] arp max-learning-num 10
# Specify Layer 3 aggregate interface Route-Aggregation 1 to learn a maximum of 10 dynamic ARP
entries.
<Sysname> system-view
[Sysname] interface route-aggregation 1
[Sysname-Route-Aggregation1] arp max-learning-num 10
arp max-learning-number
Use arp max-learning-number to set the maximum number of dynamic ARP entries that a device
can learn.
Use undo arp max-learning-number to restore the default.
Syntax
arp max-learning-number max-number slot slot-number
undo arp max-learning-number slot slot-number
Default
The maximum number of dynamic ARP entries that a device can learn depends on the ARP table
capacity set by using the switch-mode command. For information about the switch-mode
command, see Fundamentals Command Reference.
Views
System view
Predefined user roles
network-admin
Parameters
max-number: Specifies the maximum number of dynamic ARP entries for a device. The value range
for this argument is 0 to N. The value for N depends on theARP table capacity.
slot slot-number: Specifies an IRF member device by its member ID.

4
Usage guidelines
Adevice can dynamically learn ARPentries. To prevent a device from holding too many ARPentries,
you can set the maximum number of dynamic ARP entries that the device can learn. When the
maximum number is reached, the device stops learningARP entries.
When the number argument is set to 0, the device is disabled from learning dynamic ARP entries.
Examples
# Configure the device to learn a maximum of 64 dynamicARP entries.
<Sysname> system-view
[Sysname] arp max-learning-number 64
arp mode uni
Use arp mode uni to configure a port as a customer-side port.
Use undo arp mode to restore the default.
Syntax
arp mode uni
undo arp mode
Default
A port operates as a network-side port.
Views
VLAN interface view
Virtual switch interface view
Predefined user roles
network-admin
Usage guidelines
By default, the device associates an ARP entry with routing information when the device learns an
ARP entry. The ARPentry provides the next hop information for routing. To save hardware resources,
you can use this command to specify a port that connects to a user terminal as a customer-side port.
The device will not associate the routing information with the learnedARP entries.
Examples
# Configure VLAN-interface 2 as a customer-side port.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname-Vlan-interface2] arp mode uni
arp multiport
Use arp multiport to configure a multiportARP entry.
Use undo arp to delete anARP entry.
Syntax
arp multiport ip-address mac-address vlan-id [ vpn-instance vpn-instance-name ]
undo arp ip-address [ vpn-instance-name ]

5
Default
No multiport ARP entries exist.
Views
System view
Predefined user roles
network-admin
Parameters
ip-address: Specifies an IP address for the multiport ARP entry.
mac-address: Specifies a MAC address for the multiportARP entry, in the format of H-H-H.
vlan-id: Specifies a VLAN for the multiportARP entry, in the range of 1 to 4094. The specified VLAN
must already exist.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance to which the multiport ARP
entry belongs. The vpn-instance-name argument represents the VPN instance name, a
case-sensitive string of 1 to31 characters. Thespecified VPN instance must already exist. To specify
a multiport ARP entry on the public network, do not specify this option.
Usage guidelines
If the VLAN or the corresponding VLAN interface is deleted, the multiport ARP entry is also deleted.
To make the multiport ARP entry effective for packet forwarding, you must configure a multicast or
multiport unicast MAC address entry to specify multiple output interfaces. The MAC address entry
must have the same MAC address and VLAN ID as the multiport ARP entry. In addition, the IP
address in the multiport ARP entry must reside on the same subnet as the VLAN interface of the
specified VLAN.
Examples
# Configure a multiport ARP entry that contains IP address 202.38.10.2 and MAC address
00e0-fc01-0000 in VLAN 10.
<Sysname> system-view
[Sysname] arp multiport 202.38.10.2 00e0-fc01-0000 10
Related commands
display arp multiport
reset arp multiport
arp static
Use arp static to configure a staticARP entry.
Use undo arp to delete anARP entry.
Syntax
arp static ip-address mac-address [ vlan-id interface-type interface-number | interface-type
interface-number interface-type interface-number vsi vsi-name ] [ vpn-instance
vpn-instance-name ]
undo arp ip-address [ vpn-instance-name ]
Default
No static ARP entries exist.
Views
System view

6
Predefined user roles
network-admin
Parameters
ip-address: Specifies an IP address for the static ARP entry.
mac-address: Specifies a MAC address for the staticARP entry, in the format of H-H-H.
vlan-id: Specifies the ID of a VLAN to which the static ARP entry belongs. The value range is 1 to
4094.
interface-type interface-number: Specifies an interface by its type and number.
vsi vsi-name: Specifies a VSI by its name, a case-sensitive string of 1 to 31 characters.
vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance to which the static ARPentry
belongs. The vpn-instance-name argument represents the VPN instance name, a case-sensitive
string of 1 to 31 characters. The VPN instance must already exist. To specify a static ARP entry on
the public network, do not specify this option.
Usage guidelines
A static ARP entry is manually configured and maintained. It does not age out and cannot be
overwritten by any dynamic ARP entry.
Static ARP entries can be short or long.
A resolved short static ARP entry becomes unresolved upon certain events, for example, when the
resolved output interface goes down, or the corresponding VLAN or VLAN interface is deleted.
Long static ARP entries are effective or ineffective. Ineffective long static ARP entries cannot be
used for packet forwarding. Along staticARPentry is ineffective when any of the following conditions
exists:
•The corresponding VLAN interface or output interface is down.
•The IP address in the entry conflicts with a local IP address.
•No local interface has an IP address in the same subnet as the IP address in the ARP entry.
If you specify the vlan-id interface-type interface-number argument, follow these restrictions and
guidelines:
•The interface can be an Ethernet interface or an aggregate interface.
•The VLAN and VLAN interface must already exist. The specified Ethernet interface must belong
to the specified VLAN.
•The IP address of the VLAN interface and the IP address specified by the ip-address argument
must be on the same network.
•A long static ARP entry in a VLAN is deleted if the VLAN or VLAN interface is deleted.
On a VXLAN IP gateway that forwards traffic among VXLANs through VXLAN tunnels, a VSI
interface can act as the gateway for multiple VXLANs. The VSI interface (input interface) might be
connected to multiple VXLAN tunnel interfaces (output interfaces). In this case, to configure a long
static ARP entry, you must specify the interface-type interface-number interface-type
interface-number vsi vsi-name parameters to identify a VSI interface-VSI-VXLAN tunnel interface
binding. For more information about VSI interfaces, VSI, and VXLAN tunnel interfaces, see VXLAN
Configuration Guide.
Examples
# Configure a long static ARP entry that contains IP address 202.38.10.2, MAC address
00e0-fc01-0000, and output interface HundredGigE 1/0/1 in VLAN 10.
<Sysname> system-view
[Sysname] arp static 202.38.10.2 00e0-fc01-0000 10 hundredgige 1/0/1

7
# Configure a long staticARP entry that contains IP address 1.1.1.1, MAC address 00e0-fc01-0000,
input interface VSI-interface 1, output interface Tunnel 1, and the VSI a.
<Sysname> system-view
[Sysname] arp static 1.1.1.1 00e0-fc01-0000 vsi-interface 1 tunnel 1 vsi a
Related commands
display arp
reset arp
arp timer aging
Use arp timer aging to set the aging timer for dynamicARP entries.
Use undo arp timer aging to restore the default.
Syntax
arp timer aging aging-time
undo arp timer aging
Default
The aging timer for dynamic ARP entries is 20 minutes.
Views
System view
Predefined user roles
network-admin
Parameters
aging-time: Sets the aging timer for dynamicARP entries, in the range of 1 to 1440 minutes.
Usage guidelines
Each dynamic ARP entry in the ARP table has a limited lifetime, called an aging timer. The aging
timer of a dynamic ARP entry is reset each time the dynamic ARP entry is updated. Dynamic ARP
entries that are not updated before their aging timers expire are deleted from theARP table.
Set the aging timer for dynamic ARPentries as needed. For example, when you configure proxy ARP,
set a short aging time so that invalid dynamicARP entries can be deleted in a timely manner.
Examples
# Set the aging timer for dynamic ARP entries to 10 minutes.
<Sysname> system-view
[Sysname] arp timer aging 10
Related commands
display arp timer aging
display arp
Use display arp to display ARP entries.
Syntax
display arp [ [ all | dynamic | multiport |static ] [ slot slot-number ] | vlan vlan-id | interface
interface-type interface-number ] [ count | verbose ]

8
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
all: Displays all ARP entries.
dynamic: Displays dynamic ARP entries.
multiport: Displays multiport ARP entries.
static: Displays static ARP entries.
slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member
device, this command displays ARP entries for the master device.
vlan vlan-id: Specifies a VLAN by its VLAN ID. The VLAN ID is in the range of 1 to 4094.
interface interface-type interface-number:Specifies an interface by its type and number. If you do
not specify an interface, this command displaysARP entries for all interfaces.
count: Displays the number ofARP entries.
verbose: Displays detailed information about ARP entries.
Usage guidelines
This command displays information about ARP entries, including the IP address, MAC address,
VLAN ID, output interface, entry type, and aging timer.
Examples
# Display all ARP entries.
<Sysname> display arp all
Type: S-Static D-Dynamic O-Openflow R-Rule M-Multiport I-Invalid
IP Address MAC Address VID Interface/Link ID Aging Type
1.1.1.1 02e0-f102-0023 1 HGE1/0/1 N/A S
1.1.1.2 00e0-fc00-0001 12 HGE1/0/2 16 D
1.1.1.3 00e0-fe50-6503 12 Tunnel1 15 D
1.1.1.4 000d-88f7-9f7d 12 0x1 16 D
# Display detailed information about allARP entries.
<Sysname> display arp all verbose
Type: S-Static D-Dynamic O-Openflow R-Rule M-Multiport I-Invalid
IP Address : 1.1.1.1 VID : 1 Aging : N/A
MAC Address : 02e0-f102-0023 Type: S Nickname: 0x0000
Interface/Link ID: HGE1/0/1
VPN Instance : [No Vrf]
VSI Name : N/A
VSI Interface : N/A
IP Address : 1.1.1.2 VID : 12 Aging : 16
MAC Address : 0015-e944-adc5 Type: D Nickname: 0x0000
Interface/Link ID: HGE1/0/2
VPN Instance : [No Vrf]
VSI Name : N/A

9
VSI Interface : N/A
IP Address : 1.1.1.3 VID : 12 Aging : 15
MAC Address : 0013-1234-0001 Type: D Nickname: 0x0000
Interface/Link ID: Tunnel1
VPN Instance : [No Vrf]
VSI Name : vpna
VSI Interface : Vsi1
IP Address : 1.1.1.4 VID : 12 Aging : 16
MAC Address : 0012-1234-0002 Type: D Nickname: 0x0000
Interface/Link ID: 0x1
VPN Instance : [No Vrf]
VSI Name : vpna
VSI Interface : Vsi1
# Display the number of all ARP entries.
<Sysname> display arp all count
Total number of entries : 4
Table 1 Command output
Field Description
IP Address IP address in an ARP entry.
MAC Address MAC address in an ARP entry.
VID
ID of the VLAN or index of the VSI to which the ARP entry belongs. This field
displays N/A in either of the following situations:
•The ARP entry is an unresolved short static ARP entry.
•The output interface of the ARP entry does not belong to the VLAN or
VSI.
Interface/Link ID
Output interface or the link ID in an ARP entry. This field displays N/A in either
of the following situations:
•The ARP entry is an unresolved short static ARP entry.
•The ARP entry is a multiport ARP entry and has no output interface
information.
To obtain the output interface information of the multiport ARP entry, look
up the MAC address table according to the MAC address in the ARP
entry.
Aging Aging time for a dynamic ARP entry in minutes. N/A means unknown aging
time or no aging time.
Type
ARP entry type:
•D—Dynamic.
•S—Static.
•O—OpenFlow.
•R—Rule.
•M—Multiport.
•I—Invalid.
NickName
This field is not supported in the current software version.
Nickname of the ARP entry. The nickname is a string of four hexadecimal
numbers, for example, 012a. For more information about the nickname, see
TRILL Configuration Guide.

10
Field Description
VPN Instance Name of VPN instance. If no VPN instance is configured for the ARP entry, this
field displays [No Vrf].
VSI Name Name of the VSI to which the ARP entry belongs. If the ARP entry does not
belong to any VSI, this field displays N/A.
VSI Interface Name of the virtual switch interface that is the output interface in an ARP entry.
If the output interface in the ARP entry is not a virtual switch interface, this field
displays N/A.
Total number of entries Number of ARP entries.
Related commands
arp static
reset arp
display arp ip-address
Use display arp ip-address to display theARP entry for an IP address.
Syntax
display arp ip-address [ slot slot-number ] [ verbose ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
ip-address: Displays the ARP entry for the specified IP address.
slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member
device, this command displays information for the master device.
verbose: Displays the detailed information about the specified ARP entry.
Usage guidelines
The ARP entry information includes the IP address, MAC address, VLAN ID, output interface, entry
type, and aging timer.
Examples
# Display the ARP entry for the IP address 20.1.1.1.
<Sysname> display arp 20.1.1.1
Type: S-Static D-Dynamic O-Openflow R-Rule M-Multiport I-Invalid
IP Address MAC Address VID Interface/Link ID Aging Type
20.1.1.1 00e0-fc00-0001 N/A N/A N/A S
Related commands
arp static
reset arp