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TP-Link T1500-28TC TL-SL2428 T1500-28TCUN V1 CLI Reference Guide Guide - Page 76

ip dhcp snooping information option, ip dhcp snooping information strategy

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8.4 ip dhcp snooping information option Description The ip dhcp snooping information option command is used to enable the Option 82 function of DHCP Snooping. To disable the Option 82 function, please use no ip dhcp snooping information option command. Syntax ip dhcp snooping information option no ip dhcp snooping information option Command Mode Interface Configuration Mode (interface fastEthernet / interface range fastEthernet / interface gigabitEthernet / interface range gigabitEthernet / interface port-channel / interface range port-channel) Privilege Requirement Only Admin, Operator and Power User level users have access to these commands. Example Enable the Option 82 function of DHCP Snooping on port 1/0/1: T1500-28PCT(config)#interface fastEthernet 1/0/1 T1500-28PCT(config-if)#ip dhcp snooping information option 8.5 ip dhcp snooping information strategy Description The ip dhcp snooping information strategy command is used to select the operation for the Option 82 field of the DHCP request packets from the Host. To restore to the default option, please use no ip dhcp snooping information strategy command. Syntax ip dhcp snooping information strategy strategy no ip dhcp snooping information strategy 63

Section	Page
Preface	14
Chapter 1 Using the CLI	17
1.1 Accessing the CLI	17
1.1.1 Logon by Telnet	17
1.1.2 Logon by SSH	18
1.2 CLI Command Modes	23
1.3 Privilege Restrictions	26
1.4 Conventions	26
1.4.1 Format Conventions	26
1.4.2 Special Characters	26
1.4.3 Parameter Format	27
Chapter 2 User Interface	28
2.1 enable	28
2.2 enable-admin	28
2.3 service password-encryption	29
2.4 enable password	30
2.5 enable secret	31
2.6 configure	32
2.7 exit	32
2.8 end	33
2.9 history	33
2.10 history clear	34
Chapter 3 IEEE 802.1Q VLAN Commands	35
3.1 vlan	35
3.2 interface vlan	36
3.3 name	36
3.4 switchport general allowed vlan	37
3.5 switchport pvid	38
3.6 show vlan summary	38
3.7 show vlan brief	39
3.8 show vlan	39
3.9 show interface switchport	40
Chapter 4 Voice VLAN Commands	41
4.1 voice vlan	41
4.2 voice vlan aging	41
4.3 voice vlan priority	42
4.4 voice vlan mac-address	43
4.5 switchport voice vlan mode	44
4.6 switchport voice vlan security	44
4.7 show voice vlan	45
4.8 show voice vlan oui	46
4.9 show voice vlan switchport	46
Chapter 5 Etherchannel Commands	48
5.1 channel-group	48
5.2 port-channel load-balance	49
5.3 lacp system-priority	50
5.4 lacp port-priority	51
5.5 show etherchannel	51
5.6 show etherchannel load-balance	52
5.7 show lacp	53
5.8 show lacp sys-id	53
Chapter 6 User Management Commands	55
6.1 user name (password)	55
6.2 user name (secret)	56
6.3 user access-control ip-based	57
6.4 user access-control mac-based	58
6.5 user access-control port-based	59
6.6 telnet	60
6.7 show user account-list	60
6.8 show user configuration	61
6.9 show telnet-status	61
Chapter 7 HTTP and HTTPS Commands	63
7.1 ip http server	63
7.2 ip http max-users	64
7.3 ip http session timeout	65
7.4 ip http secure-server	65
7.5 ip http secure-protocol	66
7.6 ip http secure-ciphersuite	67
7.7 ip http secure-max-users	67
7.8 ip http secure-session timeout	68
7.9 ip http secure-server download certificate	69
7.10 ip http secure-server download key	70
7.11 show ip http configuration	71
7.12 show ip http secure-server	71
Chapter 8 Binding Table Commands	73
8.1 ip source binding	73
8.2 ip dhcp snooping	74
8.3 ip dhcp snooping vlan	75
8.4 ip dhcp snooping information option	76
8.5 ip dhcp snooping information strategy	76
8.6 ip dhcp snooping information remote-id	77
8.7 ip dhcp snooping information circuit-id	78
8.8 ip dhcp snooping trust	79
8.9 ip dhcp snooping mac-verify	80
8.10 ip dhcp snooping limit rate	80
8.11 ip dhcp snooping decline rate	81
8.12 show ip source binding	82
8.13 show ip dhcp snooping	83
8.14 show ip dhcp snooping interface	83
8.15 show ip dhcp snooping information interface	84
Chapter 9 ARP Inspection Commands	85
9.1 ip arp inspection(global)	85
9.2 ip arp inspection trust	85
9.3 ip arp inspection(interface)	86
9.4 ip arp inspection limit-rate	87
9.5 ip arp inspection recover	88
9.6 show ip arp inspection	88
9.7 show ip arp inspection interface	89
9.8 show ip arp inspection statistics	90
9.9 clear ip arp inspection statistics	90
Chapter 10 DoS Defend Commands	91
10.1 ip dos-prevent	91
10.2 ip dos-prevent type	91
10.3 show ip dos-prevent	93
Chapter 11 System Log Commands	94
11.1 logging buffer	94
11.2 logging buffer level	94
11.3 logging file flash	95
11.4 logging file flash frequency	96
11.5 logging file flash level	97
11.6 logging host index	97
11.7 logging monitor	98
11.8 logging monitor level	99
11.9 clear logging	100
11.10 show logging local-config	100
11.11 show logging loghost	101
11.12 show logging buffer	101
11.13 show logging flash	102
Chapter 12 SSH Commands	103
12.1 ip ssh server	103
12.2 ip ssh version	103
12.3 ip ssh algorithm	104
12.4 ip ssh timeout	105
12.5 ip ssh max-client	105
12.6 ip ssh download	106
12.7 remove public-key	107
12.8 show ip ssh	107
Chapter 13 IEEE 802.1X Commands	108
13.1 dot1x system-auth-control	108
13.2 dot1x handshake	109
13.3 dot1x auth-method	109
13.4 dot1x accounting	110
13.5 dot1x guest-vlan(global)	111
13.6 dot1x quiet-period	112
13.7 dot1x timeout	112
13.8 dot1x max-reauth-req	113
13.9 dot1x	114
13.10 dot1x guest-vlan(interface)	115
13.11 dot1x port-control	115
13.12 dot1x port-method	116
13.13 show dot1x global	117
13.14 show dot1x interface	118
Chapter 14 MAC Address Commands	119
14.1 mac address-table static	119
14.2 mac address-table aging-time	120
14.3 mac address-table filtering	120
14.4 mac address-table notification	121
14.5 mac address-table notification (interface)	122
14.6 mac address-table max-mac-count	123
14.7 mac address-table security	125
14.8 show mac address-table	125
14.9 clear mac address-table	126
14.10 show mac address-table aging-time	127
14.11 show mac address-table max-mac-count	127
14.12 show mac address-table interface	128
14.13 show mac address-table count	128
14.14 show mac address-table address	129
14.15 show mac address-table vlan	130
14.16 show mac address-table notification	130
14.17 show mac address-table security	131
Chapter 15 System Configuration Commands	132
15.1 system-time manual	132
15.2 system-time ntp	132
15.3 system-time dst predefined	134
15.4 system-time dst date	135
15.5 system-time dst recurring	136
15.6 hostname	137
15.7 location	138
15.8 contact-info	138
15.9 ip address	139
15.10 ip management-vlan	140
15.11 ip address-alloc	140
15.12 reset	141
15.13 reboot	141
15.14 copy running-config startup-config	142
15.15 copy startup-config tftp	142
15.16 copy tftp startup-config	143
15.17 boot application	144
15.18 remove backup-image	145
15.19 firmware upgrade	145
15.20 ping	146
15.21 tracert	147
15.22 show system-info	148
15.23 show image-info	149
15.24 show running-config	149
15.25 show startup-config	150
15.26 show system-time	150
15.27 show system-time dst	151
15.28 show system-time ntp	151
15.29 show cable-diagnostics interface gigabitEthernet	152
15.30 show cpu-utilization	152
15.31 show memory-utilization	153
Chapter 16 Ethernet Configuration Commands	154
16.1 interface gigabitEthernet	154
16.2 interface range fastEthernet \| gigabitEthernet	154
16.3 description	155
16.4 shutdown	156
16.5 flow-control	156
16.6 duplex	157
16.7 jumbo-size	158
16.8 speed	158
16.9 storm-control	159
16.10 bandwidth	160
16.11 clear counters	161
16.12 show interface status	161
16.13 show interface counters	162
16.14 show interface configuration	162
16.15 show storm-control	163
16.16 show bandwidth	164
Chapter 17 QoS Commands	165
17.1 qos	165
17.2 qos cos	165
17.3 qos dscp	166
17.4 qos queue cos-map	167
17.5 qos queue dscp-map	168
17.6 qos queue mode	169
17.7 show qos interface	170
17.8 show qos cos-map	170
17.9 show qos dscp-map	171
17.10 show qos queue mode	171
17.11 show qos status	172
Chapter 18 Port Mirror Commands	173
18.1 monitor session destination interface	173
18.2 monitor session source interface	174
18.3 show monitor session	175
Chapter 19 Port Isolation Commands	176
19.1 port isolation	176
19.2 show port isolation interface	177
Chapter 20 Loopback Detection Commands	178
20.1 loopback-detection(global)	178
20.2 loopback-detection interval	178
20.3 loopback-detection recovery-time	179
20.4 loopback-detection(interface)	180
20.5 loopback-detection config	180
20.6 loopback-detection recover	181
20.7 show loopback-detection global	182
20.8 show loopback-detection interface	182
Chapter 21 ACL Commands	184
21.1 access-list create	184
21.2 mac access-list	184
21.3 access-list standard	185
21.4 access-list extended	186
21.5 rule	187
21.6 access-list policy name	188
21.7 access-list policy action	189
21.8 access-list bind acl(interface)	189
21.9 access-list bind acl(vlan)	190
21.10 access-list bind(interface)	190
21.11 access-list bind(vlan)	191
21.12 show access-list	192
21.13 show access-list policy	192
21.14 show access-list bind	193
Chapter 22 PoE Commands	194
22.1 power inline consumption (global)	194
22.2 power profile	195
22.3 power time-range	196
22.4 absolute	196
22.5 periodic	197
22.6 power holiday	199
22.7 holiday	199
22.8 power inline consumption (interface)	200
22.9 power inline priority	201
22.10 power inline supply	202
22.11 power inline profile	202
22.12 power inline time-range	203
22.13 show power inline	204
22.14 show power inline configuration interface	204
22.15 show power inline information interface	205
22.16 show power profile	205
22.17 show power holiday	206
22.18 show power time-range	206
Chapter 23 MSTP Commands	207
23.1 debug spanning-tree	207
23.2 spanning-tree(global)	208
23.3 spanning-tree(interface)	208
23.4 spanning-tree common-config	209
23.5 spanning-tree mode	210
23.6 spanning-tree mst configuration	211
23.7 instance	212
23.8 name	212
23.9 revision	213
23.10 spanning-tree mst instance	214
23.11 spanning-tree mst	214
23.12 spanning-tree priority	215
23.13 spanning-tree timer	216
23.14 spanning-tree hold-count	217
23.15 spanning-tree max-hops	217
23.16 spanning-tree bpdufilter	218
23.17 spanning-tree bpduguard	219
23.18 spanning-tree guard loop	219
23.19 spanning-tree guard root	220
23.20 spanning-tree guard tc	221
23.21 spanning-tree mcheck	221
23.22 show spanning-tree active	222
23.23 show spanning-tree bridge	222
23.24 show spanning-tree interface	223
23.25 show spanning-tree interface-security	224
23.26 show spanning-tree mst	224
Chapter 24 IGMP Snooping Commands	226
24.1 ip igmp snooping(global)	226
24.2 ip igmp snooping(interface)	226
24.3 ip igmp snooping rtime	227
24.4 ip igmp snooping mtime	228
24.5 ip igmp snooping report-suppression	228
24.6 ip igmp snooping immediate-leave	229
24.7 ip igmp snooping drop-unknown	229
24.8 ip igmp snooping last-listener query-inteval	230
24.9 ip igmp snooping last-listener query-count	231
24.10 ip igmp snooping vlan-config	231
24.11 ip igmp snooping vlan-config (router-ports-forbidden)	233
24.12 ip igmp snooping multi-vlan-config	234
24.13 ip igmp snooping multi-vlan-config (router-ports-forbidden)	235
24.14 ip igmp snooping multi-vlan-config (source-ip-replace)	236
24.15 ip igmp snooping querier vlan	236
24.16 ip igmp snooping querier vlan (general query)	237
24.17 ip igmp snooping max-groups	238
24.18 ip igmp profile	239
24.19 deny	240
24.20 permit	240
24.21 range	241
24.22 ip igmp filter	242
24.23 clear ip igmp snooping statistics	242
24.24 show ip igmp snooping	243
24.25 show ip igmp snooping interface	243
24.26 show ip igmp snooping vlan	244
24.27 show ip igmp snooping multi-vlan	245
24.28 show ip igmp snooping groups vlan	245
24.29 show ip igmp snooping groups	246
24.30 show ip igmp snooping querier	247
24.31 show ip igmp profile	247
Chapter 25 SNMP Commands	249
25.1 snmp-server	249
25.2 snmp-server view	249
25.3 snmp-server group	250
25.4 snmp-server user	252
25.5 snmp-server community	253
25.6 snmp-server host	254
25.7 snmp-server engineID	256
25.8 snmp-server traps snmp	256
25.9 snmp-server traps link-status	257
25.10 snmp-server traps	258
25.11 snmp-server traps vlan	259
25.12 rmon history	260
25.13 rmon event	261
25.14 rmon alarm	262
25.15 rmon statistics	263
25.16 show snmp-server	264
25.17 show snmp-server view	265
25.18 show snmp-server group	265
25.19 show snmp-server user	266
25.20 show snmp-server community	266
25.21 show snmp-server host	266
25.22 show snmp-server engineID	267
25.23 show rmon history	267
25.24 show rmon event	268
25.25 show rmon alarm	269
25.26 show rmon statistics	269
Chapter 26 LLDP Commands	271
26.1 lldp	271
26.2 lldp hold-multiplier	271
26.3 lldp timer	272
26.4 lldp receive	273
26.5 lldp transmit	274
26.6 lldp snmp-trap	274
26.7 lldp tlv-select	275
26.8 lldp med-fast-count	276
26.9 lldp med-status	276
26.10 lldp med-tlv-select	277
26.11 lldp med-location	278
26.12 show lldp	279
26.13 show lldp interface	279
26.14 show lldp local-information interface	280
26.15 show lldp neighbor-information interface	280
26.16 show lldp traffic interface	281
Chapter 27 AAA Commands	282
27.1 aaa enable	282
27.2 enable admin password	283
27.3 enable admin secret	284
27.4 tacacas-server host	285
27.5 show tacacs-server	286
27.6 radius-server host	287
27.7 show radius-server	288
27.8 aaa group	289
27.9 server	289
27.10 show aaa group	290
27.11 aaa authentication login	291
27.12 aaa authentication enable	292
27.13 aaa authentication dot1x default	293
27.14 aaa accounting dot1x default	293
27.15 show aaa authentication	294
27.16 show aaa accounting	295
27.17 line telnet	295
27.18 login authentication(telnet)	296
27.19 line ssh	296
27.20 login authentication(ssh)	297
27.21 enable authentication(telnet)	298
27.22 enable authentication(ssh)	298
27.23 ip http login authentication	299
27.24 ip http enable authentication	300