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Chapter 10 PoE
PoE (Power over Ethernet) technology describes a system to transmit electrical power along with
data to remote devices over standard twisted-pair cable in an Ethernet network. It is especially
useful for supplying power to IP telephones, wireless LAN access points, cameras and so on.
¾ Composition
A PoE system usually consists of PSE and PD.
PSE: Power sourcing equipment (PSE) is a device such as a switch that provides power on the
Ethernet cable to the linked device.
PD: A powered device (PD) is a device accepting power from the PSE and thus consumes energy.
PDs falls into two types, standard PDs and nonstandard PDs. Standard PDs refer to the powered
devices that comply with IEEE 802.3af and IEEE 802.3at. Examples include wireless LAN access
points, IP Phones, IP cameras, network hubs, embedded computers etc.
¾ Advantage
z Cheap cabling: The remote device such as cameras can be powered by PSE in no need
of prolonging its power cord additionally and Ethernet cable is much cheaper than AC
wire or power cord.
z Easy to connect: PoE uses only one Ethernet cable with no need of external power
supply.
z Reliable: A powered device can be either powered by PSE using Ethernet cable or
powered through the provided power adapter. It is very convenient to provide a backup
power supply for the PDs.
z Flexibility: In compliance with IEEE 802.3af and IEEE 802.3at, global organizations can
deploy PoE everywhere without concern for any local variance in AC power standards,
outlets, plugs, or reliability.
z Wide use: It can be applied to wireless LAN access points, IP Phones, IP cameras,
network hubs, embedded computers etc.
TL-SG3424P L2 Managed PoE Switch is a Power Sourcing Equipment (PSE). All the
Auto-Negotiation RJ45 ports on the switch support Power over Ethernet (PoE) function, which can
automatically detect and supply power for those powered devices (PDs) complying with IEEE
802.3af and IEEE 802.3at. The maximum power the TP-LINK PoE switch can supply is 320W and
the maximum power each PoE port can supply is 30W.
PoE function can be configured in the two sections, PoE Config and PoE Time-Range.
10.1 PoE Config
All the RJ45 ports on the switch can be configured to supply power for the powered devices that
comply with IEEE 802.3af and IEEE 802.3at. As the power every port or the system can provide is
limited, some attributes should be set to make full use of the power and guarantee the adequate
power to the linked PDs. When the power exceeds the maximum power limit or the power is
inadequate to power the device, the switch may disconnect the power supply to the specified
linked powered device according to the configured rules. When detecting a PD is unplugged, the
switch will stop supplying the power to the PD.
PoE Config, mainly for PoE attributes configuration, is implemented on PoE Config and PoE
Profile pages.
126
- TL-SG3424P 1
- COPYRIGHT & TRADEMARKS 2
- FCC STATEMENT 2
- CE Mark Warning 2
- SAFETY NOTICES 2
- Package Contents 9
- Chapter 1 About this Guide 10
- Chapter 2 Introduction 14
- 2.3 Appearance Description 15
- 2.3.2 Rear Panel 17
- 3.1 Login 18
- 3.2 Configuration 18
- Chapter 4 System 20
- ¾ Port Info 21
- ¾ Bandwidth Utilization 21
- 4.1.2 Device Description 22
- 4.1.3 System Time 22
- ¾ Time Info 23
- ¾ Time Config 23
- ¾ DST Config 23
- 4.1.4 System IP 24
- 4.2 User Manage 25
- ¾ User Info 26
- ¾ User Table 26
- 4.3 System Tools 27
- 4.3.3 Firmware Upgrade 28
- 4.4 Access Security 29
- ¾ Access Control Config 30
- ¾ Session Config 30
- 4.4.2 SSL Config 31
- 4.4.3 SSH Config 32
- ¾ Key Download 33
- ¾ Network Requirements 34
- Chapter 5 Switching 38
- 5.1.2 Port Mirror 39
- Figure 5-3 Mirroring Port 40
- 5.1.3 Port Security 41
- ¾ Port Security 42
- 5.1.4 Port Isolation 43
- 5.2 LAG 44
- ¾ LAG Table 45
- 5.2.2 Static LAG 46
- 5.2.3 LACP Config 47
- ¾ LACP Config 48
- 5.3 Traffic Monitor 49
- 5.3.2 Traffic Statistics 50
- 5.4 MAC Address 51
- 5.4.1 Address Table 52
- 5.4.2 Static Address 54
- 5.4.3 Dynamic Address 55
- ¾ Aging Config 56
- ¾ Search Option 56
- ¾ Dynamic Address Table 56
- 5.4.4 Filtering Address 57
- ¾ Create Filtering Address 58
- ¾ Filtering Address Table 58
- Chapter 6 VLAN 59
- 6.1 802.1Q VLAN 60
- ¾ PVID 61
- 6.1.1 VLAN Config 62
- ¾ VLAN Members 63
- 6.1.2 Port Config 64
- 6.2 MAC VLAN 66
- 6.3 Protocol VLAN 67
- Ethernet II 69
- 6.3.1 Protocol Group Table 70
- 6.3.2 Protocol Group 70
- 6.3.3 Protocol Template 71
- 6.7 GVRP 77
- ¾ GVRP 78
- Chapter 7 Spanning Tree 81
- ¾ STP Timers 82
- ¾ STP Generation 82
- ¾ MSTP 85
- ¾ Port States 85
- ¾ Port Roles 85
- 7.1 STP Config 86
- ¾ Parameters Config 87
- 7.2 Port Config 88
- 7.3 MSTP Instance 90
- 7.3.2 Instance Config 91
- 7.3.3 Instance Port Config 92
- 7.4 STP Security 94
- ¾ TC Protect 95
- ¾ BPDU Protect 95
- ¾ BPDU Filter 95
- ¾ Port Protect 96
- 7.4.2 TC Protect 97
- Chapter 8 Multicast 101
- ¾ Multicast Address Table 102
- 8.1 IGMP Snooping 103
- 8.1.1 Snooping Config 104
- 8.1.2 Port Config 105
- 8.1.3 VLAN Config 106
- ¾ VLAN Table 107
- ¾ VLAN Config 107
- 8.1.4 Multicast VLAN 108
- ¾ Multicast VLAN 109
- Configuration procedure: 110
- 8.2 Multicast IP 111
- 8.2.1 Multicast IP Table 112
- 8.2.2 Static Multicast IP 112
- 8.3 Multicast Filter 113
- 8.3.1 IP-Range 114
- 8.3.2 Port Filter 115
- 8.4 Packet Statistics 116
- ¾ Auto Refresh 117
- ¾ IGMP Statistics 117
- Chapter 9 QoS 118
- 9.1 DiffServ 121
- 9.1.2 Schedule Mode 122
- 9.1.3 802.1P Priority 123
- 9.1.4 DSCP Priority 123
- Configuration Procedure: 124
- 9.2 Bandwidth Control 125
- 9.2.2 Storm Control 126
- 9.3 Voice VLAN 128
- 9.3.1 Global Config 130
- 9.3.2 Port Config 130
- Figure 9-13 Port Config 131
- 9.3.3 OUI Config 132
- Chapter 10 PoE 134
- 10.1.1 PoE Config 135
- 10.1.2 Profile Config 136
- 10.2 PoE Time-Range 137
- ¾ Time-Range Table 138
- ¾ Create Time-Range 138
- ¾ Create Time-Slice 138
- 10.2.3 PoE Holiday Config 139
- Chapter 11 ACL 141
- 11.1.2 Time-Range Create 142
- 11.2 ACL Config 143
- 11.2.1 ACL Summary 144
- 11.2.2 ACL Create 144
- 11.2.3 MAC ACL 145
- 11.2.4 Standard-IP ACL 146
- 11.2.5 Extend-IP ACL 146
- ¾ Create Extend-IP ACL 147
- 11.3 Policy Config 148
- 11.3.3 Action Create 149
- 11.4 Policy Binding 150
- 11.4.2 Port Binding 151
- 11.4.3 VLAN Binding 151
- ¾ Network Diagram 153
- ¾ Configuration Procedure 153
- Chapter 12 Network Security 155
- 12.1.2 Manual Binding 156
- ¾ Manual Binding Option 157
- ¾ Manual Binding Table 157
- 12.1.3 ARP Scanning 158
- 12.1.4 DHCP Snooping 159
- ¾ DHCP Working Principle 160
- ¾ Option 82 161
- ¾ DHCP Cheating Attack 162
- ¾ DHCP Snooping Config 163
- ¾ Option 82 Config 164
- ¾ Port Config 164
- 12.2 ARP Inspection 165
- ¾ Cheating Terminal Hosts 166
- ¾ Man-In-The-Middle Attack 167
- ¾ ARP Flooding Attack 168
- 12.2.1 ARP Detect 169
- 12.2.2 ARP Defend 170
- ¾ ARP Defend 171
- 12.3 DoS Defend 172
- 12.4 802.1X 174
- 12.4.1 Global Config 178
- ¾ Global Config 179
- ¾ Authentication Config 179
- 12.4.2 Port Config 180
- 12.4.3 Radius Server 181
- Chapter 13 SNMP 183
- ¾ MIB Introduction 184
- 13.1 SNMP Config 185
- 13.1.2 SNMP View 186
- 13.1.3 SNMP Group 187
- 13.1.4 SNMP User 188
- HMAC-MD5 algorithm 189
- 13.1.5 SNMP Community 190
- 13.2 Notification 192
- ¾ Create Notification 193
- ¾ Notification Table 193
- 13.3 RMON 194
- 13.3.1 History Control 195
- 13.3.2 Event Config 195
- 13.3.3 Alarm Config 196
- ¾ Alarm Table 197
- Chapter 14 LLDP 199
- 14.1 Basic Config 203
- 14.1.2 Port Config 204
- 14.2 Device Info 205
- 14.2.2 Neighbor Info 206
- 14.3 Device Statistics 207
- 14.4 LLDP-MED 208
- 14.4.1 Global Config 209
- 14.4.2 Port Config 209
- ¾ LLDP-MED Port Config 210
- 14.4.3 Local Info 211
- 14.4.4 Neighbor Info 212
- ¾ Neighbor Info 213
- Chapter 15 Cluster 214
- 15.1 NDP 215
- 15.1.2 NDP Summary 216
- ¾ Port Status 217
- 15.1.3 NDP Config 218
- 15.2 NTDP 219
- 15.2.2 NTDP Summary 220
- 15.2.3 NTDP Config 222
- 15.3 Cluster 223
- 15.3.2 Cluster Config 224
- Chapter 16 Maintenance 229
- 16.1.2 Memory Monitor 230
- 16.2 Log 231
- 16.2.1 Log Table 232
- 16.2.2 Local Log 233
- 16.2.3 Remote Log 233
- 16.2.4 Backup Log 234
- 16.3 Device Diagnose 235
- 16.4 Network Diagnose 236
- 16.4.2 Tracert 237
- ¾ Tracert Config 238
- Appendix A: Specifications 239
- Figure B-2 241
- 1. Hardware Installation 243
- 1. Installation Guide 248
- 2. Uninstall Software 251
- 3. Configuration 252
- Appendix E: Glossary 256
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