About The Power Over Ethernet Midspan; Power Management - PowerDsine PD-6506 User Manual

2 About the Power over Ethernet
Midspan
PowerDsine's family of Power over Ethernet Midspans, series 3500 &
6500, injects power over data-carrying Ethernet cabling. The PD-
6506/6512/6524 Midspans, support 6, 12 and 24 ports respectively in a
10/100BaseTx Ethernet network, over TIA/EIA-568 Category 5/5e/6
cabling. DC operating power, for data terminal units, is fed over unused
pairs of the cabling (7/8 and 4/5). The Power over Ethernet Midspan
normally powers devices that are 'Power over Ethernet Enabled'or are
equipped to receive power over Ethernet. These devices are called
Powered Devices (PDs). Devices that are not can receive power over
Ethernet, may require an external power adapter in order to be powered.
Contact PowerDsine for such an adapter.
Power over Ethernet Midspan main features:
Safe and reliable power over existing Ethernet
infrastructure
Eliminates the need for AC outlets, local UPS & AC/DC
adapters near PDs
Remote
SNMPv3
Highest level of Network Security
Safe solution that protects network infrastructure
Standards compliant.
2.1

Power Management

When establishing a network, the total power required by the PDs may
exceed the total power available from the Midspan. The built-in Power
Management feature does not allow total power output to exceed
maximum power available (refer to the Technical Specifications). When
total power available is near maximum, attempts to connect an additional
PD to a free port cause the corresponding LED of the port to blink orange,
indicating an out-of-power state. This port does not deliver power. Power
distribution is based on "first come, first served" logic.
Sometimes, connected and operating PDs significantly increase or
suddenly raise their power requirements. If the power required exceeds
the power available, the Midspan starts turning off ports, starting from the
last port down, until the total power is once again under the maximum
PowerDsine
Management using Web control
7 The Power over Ethernet Pioneers
PowerDsine 6500 Series
and/or