Enabling Power Over Ethernet Ports (Poe) - Dell Force10 S2410-01-10GE-24P Configuration Manual

Figure 7-87. Clearing Counters: Example of Using the clear counters Command
Force10 #clear counters 1/0/1
Are you sure you want to clear the port stats? (y/n)y
Port Stats Cleared.
Force10 #clear counters
Are you sure you want to clear ALL port stats? (y/n)y
ALL Port Stats Cleared.
Force10 #clear counters
Are you sure you want to clear the switch stats? (y/n)y
Switch Stats Cleared.
Force10 #

Enabling Power over Ethernet Ports (PoE)

SFTOS 2.5.1 introduces support for Power over Ethernet (PoE) functionality for the S50V switch.
PoE provides the ability to transmit both electrical power and data to remote devices over standard
twisted-pair cable. SFTOS support for PoE conforms to IEEE 802.3af, which defines a standard to deliver
power over Ethernet cables.
All 48 physical copper interfaces on the S50V have the capability to provide power. Some of the salient
features are as follows:
• The total power budget for the switch is 360 watts, although the current power supply limits the actual
power available to 320 watts, depending on voltage and other factors. Each port can provide 20 watts
maximum, subject to the power budget, voltage, and power priority and power limit settings.
• Legacy devices, as well as powered devices specifically compliant with IEEE 802.3af, are supported.
• When the power budget is exceeded, the next port attempting to power up causes the currently enabled
port with the lowest priority to shut down if the port attempting to power up has a higher PoE priority.
• Support for PoE is provided in the CLI, as well as SNMP.
• SNMP support is through the Power-Ethernet MIB (POWER-ETHERNET-MIB) and the Dell Force10
SFTOS-POWER-ETHERNET-MIB for snmpwalk.
• Syslog messages are provided for PoE events.
While each of the 48 physical copper interfaces of the S50V can provide power to attached PoE-compliant
powered devices, the total PoE power budget cannot provide all ports, at the same time, the 15.4 watts
specified by IEEE 802.3af.
If you connect powered devices to all 48 ports, they can all work at once if their total draw is less than 320
watts. In order to support powered devices that require more power, the S50V uses, by default, a
first-come, first-serve method of allocating power.
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Configuring Interfaces | 123