Allied-telesis SwitchBlade x8106 Manuel d'utilisateur Page 35
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SwitchBlade x8106 Chassis Switch Installation Guide
35
Power over Ethernet on the AT-SBx81GP24 Line Card
This section applies to the AT-SBx81GP24 PoE Line Card. The twisted-
pair ports on the line card support Power over Ethernet (PoE). PoE is a
mechanism by which the ports supply power to network devices over the
twisted pair cables that carry the network traffic. This feature can simplify
network installation and maintenance because it allows you to use the
switch as a central power source for other network devices.
Devices that receive their power over Ethernet cables are called powered
devices (PD), examples of which include wireless access points, IP
telephones, web cams, and even other Ethernet switches. A PD
connected to a port on the switch receives both network traffic and power
over the same twisted-pair cable.
The AT-SBx81GP24 Line Card automatically determines whether a device
connected to a port is a PD. A PD has a signature resistor or signature
capacitor that the line card can detect over the Ethernet cabling. If the
resistor or capacitor is present, the switch assumes that the device is a
PD.
A port connected to a network node that is not a PD (that is, a device that
receives its power from another power source) functions as a regular
Ethernet port, without PoE. The PoE feature remains enabled on the port
but no power is delivered to the device.
Powered Device
Classes
The IEEE 802.3af and 802.3at standards define five powered device
classes. The classes are defined by the power requirements of the
powered devices. The classes are shown in Table 3. The AT-SBx81GP24
Line Card supports all five classes.
Table 3. IEEE802.3af and IEEE802.3at Powered Device Classes
Class Usage
Maximum
Power Output
on the PoE
Port
PD Power
Range
0 Default 15.4W .044W to
12.95W
1 Optional 4.0W 0.44W to 3.84W
2 Optional 7.0W 3.84W to 6.49W
3 Optional 15.4W 6.49W to
12.95W
4 Optional 30.0W 12.95W to
25.9W
- Installation Guide 1
- Radiated Energy 3
- Industry Canada 3
- Translated Safety Statements 4
- Contents 5
- List of Figures 12
- List of Tables 14
- Contacting Allied Telesis 17
- Overview 19
- Introduction 20
- Figure 5. Fan Module 22
- AT-SBx8106 Chassis 23
- Ethernet Line 24
- Cards Slots 24
- Chapter 1: Overview 26
- AT-SBx81GT24 Line Card 27
- AT-SBx81GT40 Line Card 28
- AT-SBx81GP24 PoE Line Card 29
- AT-SBx81GS24a SFP Line Card 30
- AT-SBx81XS6 SFP+ Line Card 31
- Distance 33
- Requirements 33
- Automatic MDIX 34
- Detection 34
- Powered Device 35
- AT-SBx81GT24 38
- Line Card 38
- AT-SBx81GT40 39
- AT-SBx81GP24 41
- AT-SBx81GS24a 42
- AT-SBx81XS6 43
- SBx STATUS 47
- NET MGMT 49
- Console (RS-232) 51
- AT-SBxPWRSYS1 AC Power Supply 53
- AT-SBxPWRPOE1 Power Supply 55
- AT-SBxFAN06 Module 59
- Safety Precautions and Site 63
- Reviewing Safety Precautions 64
- Chapter 3 71
- Required Tools and Material 72
- Preparing the Equipment Rack 73
- 190.0 mm (7.5“) 74
- 152.4 mm (6”0) 74
- 342.4 mm (13.5”) 74
- Removing the Rubber Feet 78
- 3. Turn the chassis over 79
- “Dim X” “Dim X” “Dim X” 81
- Removing the Shipping Brace 86
- Installing the Power Supplies 89
- Chapter 5 109
- INCORRECT 111
- Controller Fabric Card 116
- Chapter 6 125
- Connecting 127
- Cables to the AT 127
- SBx81GT40 Line 127
- Powering On the Chassis 143
- Verifying the Installation 144
- Power Supply 146
- Connecting the 156
- Grounding Wire 156
- DC Power Wires 167
- Angle Terminals 167
- Connecting Bare 173
- Chapter 8 181
- Starting a Local 184
- Management 184
- Entering the 185
- AlliedWare Plus 185
- Operating System 185
- Commands 185
- Troubleshooting 189
- AT-SBxPWRSYS1 DC Power Supply 191
- Chapter 9: Troubleshooting 192
- Ethernet Line Cards 193
- Twisted Pair Ports 195
- Power Over Ethernet 197
- Fiber Optic Transceivers 199
- AT-SBxFAN06 Fan Module 201
- Replacing Modules 205
- Supplies 206
- Chapter 10: Replacing Modules 208
- Figure 141 on page 210 209
- 149 on page 218 217
- Figure 152 on page 221 220
- Replacing Ethernet Line Cards 222
- Removing the 226
- AT-SBxFAN06 226
- Fan Module 226
- Connector 227
- Installing a New 229
- Technical Specifications 233
- Environmental Specifications 235
- Power Specifications 236
- PoE Mode 238
- Port Pinouts 239
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