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TP-Link T1500-28PCT TL-SL2428P T1500-28PCT V1 CLI Reference Guide - Page 131

DHCP Filtering Commands, ip dhcp filtering

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Chapter 18 DHCP Filtering Commands DHCP Filtering functions to monitor the process of hosts obtaining IP addresses from DHCP Servers by configuring the desired port(s) as Trusted Port(s). Only the trusted port(s) can forward DHCP packets from DHCP servers. In this way, the switch can devoid of DHCP cheating attack which will cause network confusion and security problem. ip dhcp filtering Description The ip dhcp filtering command is used to enable DHCP Filtering function. To disable please use no ip dhcp filtering command. Syntax ip dhcp filtering no ip dhcp filtering Command Mode Global Configuration Mode Example Enable the DHCP Filtering: T1500-28PCT(config)# ip dhcp filtering ip dhcp filtering trust Description The ip dhcp filtering trust command is used to configure a port to be a Trusted Port. Only the trusted ports can forward DHCP packets from DHCP servers. To turn the port back to a distrusted port, please use no ip dhcp filtering trust command. Syntax ip dhcp filtering trust no ip dhcp filtering trust Command Mode Interface Configuration Mode (interface fastEthernet / interface range fastEthernet / interface gigabitEthernet / interface range gigabitEthernet) 120

Section	Page
Preface	12
Chapter 1 Using the CLI	14
1.1 Accessing the CLI	14
1.1.1. Logon by Telnet	14
1.1.2. Logon by SSH	15
1.2 CLI Command Modes	20
1.3 Security Levels	23
1.4 Conventions	23
1.4.1 Format Conventions	23
1.4.2 Special Characters	24
1.4.3 Parameter Format	24
Chapter 2 User Interface	25
enable	25
service password-encryption	25
enable password	26
enable secret	27
disable	28
configure	28
exit	28
end	29
show history	29
clear history	30
Chapter 3 IEEE 802.1Q VLAN Commands	31
vlan	31
interface vlan	31
name	32
switchport general allowed vlan	32
switchport pvid	33
show vlan summary	33
show vlan brief	34
show vlan	34
show interface switchport	35
Chapter 4 Voice VLAN Commands	36
voice vlan	36
voice vlan aging time	36
voice vlan priority	37
voice vlan mac-address	38
switchport voice vlan mode	38
switchport voice vlan security	39
show voice vlan	39
show voice vlan oui	40
show voice vlan switchport	40
Chapter 5 Etherchannel Commands	42
channel-group	42
port-channel load-balance	43
lacp system-priority	43
lacp port-priority	44
show etherchannel	44
show etherchannel load-balance	45
show lacp	45
show lacp sys-id	46
Chapter 6 User Management Commands	47
user name (password)	47
user name (secret)	48
user access-control ip-based	49
user access-control mac-based	50
user access-control port-based	50
user max-number	51
user idle-timeout	52
show user account-list	52
show user configuration	53
Chapter 7 System Log Commands	54
logging buffer	54
logging file flash	55
logging file flash frequency	55
logging file flash level	56
logging host index	56
clear logging	57
show logging local-config	58
show logging loghost	58
show logging buffer	59
show logging flash	59
Chapter 8 SSH Commands	61
ip ssh server	61
ip ssh version	61
ip ssh timeout	62
ip ssh max-client	62
ip ssh download	63
show ip ssh	63
Chapter 9 SSL Commands	65
ip http secure-server	65
ip http secure-server download certificate	65
ip http secure-server download key	66
show ip http secure-server	67
Chapter 10 MAC Address Commands	68
mac address-table static	68
mac address-table aging-time	69
mac address-table filtering	69
mac address-table max-mac-count	70
show mac address-table	71
show mac address-table aging-time	71
show mac address-table max-mac-count interface	72
show mac address-table interface	72
show mac address-table count	73
show mac address-table address	73
show mac address-table vlan	74
Chapter 11 System Commands	75
system-time manual	75
system-time ntp	75
system-time dst predefined	77
system-time dst date	78
system-time dst recurring	79
hostname	80
location	80
contact-info	81
ip management-vlan	81
ip address	82
ip address-alloc dhcp	82
ip address-alloc bootp	83
reset	83
reboot	84
copy running-config startup-config	84
copy startup-config tftp	85
copy tftp startup-config	85
firmware upgrade	86
ping	86
tracert	87
loopback interface	88
show system-info	88
show running-config	89
show system-time	89
show system-time dst	89
show system-time ntp	90
show cable-diagnostics interface	90
Chapter 12 Ethernet Configuration Commands	92
interface fastEthernet	92
interface range fastEthernet	92
interface gigabitEthernet	93
interface range gigabitEthernet	93
description	94
shutdown	95
flow-control	95
media-type	96
duplex	96
speed	97
storm-control broadcast	97
storm-control multicast	98
storm-control unicast	99
bandwidth	99
clear counters	100
show interface status	100
show interface counters	101
show interface description	101
show interface flowcontrol	102
show interface configuration	102
show storm-control	103
show bandwidth	103
Chapter 13 QoS Commands	105
qos	105
qos cos	105
qos dscp	106
qos queue cos-map	107
qos queue dscp-map	107
qos queue mode	108
show qos interface	109
show qos cos-map	110
show qos dscp-map	110
show qos queue mode	111
show qos status	111
Chapter 14 Port Mirror Commands	112
monitor session destination interface	112
monitor session source interface	113
show monitor session	114
Chapter 15 Port Isolation Commands	115
port isolation	115
show port isolation interface	115
Chapter 16 Loopback Detection Commands	117
loopback-detection(global)	117
loopback-detection interval	117
loopback-detection recovery-time	118
loopback-detection(interface)	118
loopback-detection config	119
loopback-detection recover	120
show loopback-detection global	120
show loopback-detection interface	121
Chapter 17 ACL Commands	122
access-list create	122
mac access-list	122
access-list standard	123
access-list extended	124
access-list combined	125
rule	126
access-list policy name	127
access-list policy action	127
access-list bind(interface)	128
access-list bind(vlan)	129
show access-list	129
show access-list policy	130
show access-list bind	130
Chapter 18 DHCP Filtering Commands	131
ip dhcp filtering	131
ip dhcp filtering trust	131
show ip dhcp filtering	132
show ip dhcp filtering interface	132
Chapter 19 PoE Commands	133
power inline consumption (global)	133
power profile	133
power time-range	134
power holiday	135
absolute	136
periodic	136
holiday	137
power inline consumption (interface)	138
power inline priority	138
power inline supply	139
power inline profile	139
power inline time-range	140
show power inline	141
show power inline configuration interface	141
show power inline information interface	141
show power profile	142
show power holiday	142
show power time-range	143
Chapter 20 MSTP Commands	144
spanning-tree(global)	144
spanning-tree(interface)	144
spanning-tree common-config	145
spanning-tree mode	146
spanning-tree mst configuration	147
instance	147
name	148
revision	148
spanning-tree mst instance	149
spanning-tree mst	149
spanning-tree priority	150
spanning-tree tc-defend	151
spanning-tree timer	151
spanning-tree hold-count	152
spanning-tree max-hops	153
spanning-tree bpdufilter	153
spanning-tree bpduguard	154
spanning-tree guard loop	154
spanning-tree guard root	155
spanning-tree guard tc	155
spanning-tree mcheck	156
show spanning-tree active	157
show spanning-tree bridge	157
show spanning-tree interface	157
show spanning-tree interface-security	158
show spanning-tree mst	159
Chapter 21 IGMP Commands	160
ip igmp snooping(global)	160
ip igmp snooping(interface)	160
ip igmp snooping immediate-leave	161
ip igmp snooping drop-unknown	161
ip igmp snooping vlan-config	162
ip igmp snooping multi-vlan-config	163
ip igmp snooping filter add-id	164
ip igmp snooping filter(global)	165
ip igmp snooping filter(interface)	165
ip igmp snooping filter maxgroup	166
ip igmp snooping filter mode	167
show ip igmp snooping	167
show ip igmp snooping interface	168
show ip igmp snooping vlan	168
show ip igmp snooping multi-vlan	169
show ip igmp snooping groups	169
show ip igmp snooping filter	170
Chapter 22 SNMP Commands	172
snmp-server	172
snmp-server view	172
snmp-server group	173
snmp-server user	174
snmp-server community	176
snmp-server host	176
snmp-server engineID	178
snmp-server traps snmp	179
snmp-server traps	179
snmp-server traps power	180
snmp-server traps mac	181
snmp-server traps vlan	182
rmon history	183
rmon event	184
rmon alarm	185
show snmp-server	186
show snmp-server view	187
show snmp-server group	187
show snmp-server user	187
show snmp-server community	188
show snmp-server host	188
show snmp-server engineID	188
show rmon history	189
show rmon event	189
show rmon alarm	190
Chapter 23 LLDP Commands	191
lldp	191
lldp hold-multiplier	191
lldp timer	192
lldp med-fast-count	193
lldp receive	193
lldp transmit	194
lldp snmp-trap	194
lldp tlv-select	195
lldp med-location	196
lldp med-status	196
lldp med-tlv-select	197
show lldp	198
show lldp interface	198
show lldp local-information interface	199
show lldp neighbor-information interface	199