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Power over Ethernet Capability
The SMC6824MPE switch's 24 front panel 10/100 Mbps ports support the
IEEE 802.3af Power over Ethernet (PoE) standard that enables DC power
to be supplied to attached devices using wires in the connecting Ethernet
cable. Any 802.3af-compliant device attached to a port can directly draw
power from the switch over the Ethernet cable without requiring its own
separate power source. This capability gives network administrators
centralized power control for devices such as IP phones and wireless access
points, which translates into greater network availability.
For each attached 802.3af-compliant device, the SMC6824MPE switch
automatically senses the load and dynamically supplies the required power.
The switch delivers power to a device using the two wire pairs in UTP or
STP cable that are not used for 10BASE-T/100BASE-TX connections. Each
port can provide up to 15.4 W of power at the standard -48 VDC voltage.
Independent overload and short-circuit protection for each port allows the
switch to automatically shut down a port's power when limits are exceeded.
Network devices such as IP phones, wireless access points, and network
cameras, typically consume less than 10 W of power, so they are ideal for
Power over Ethernet applications.
Network Management Options
With a comprehensive arrangement of LEDs, the SMC6824MPE switch
provides "at a glance" monitoring of network and port status. The switch can
be managed over the network with a web browser or Telnet application, or
via a direct connection to the console port. The switch includes a built-in
network management agent that allows it to be managed in-band using
SNMP or RMON (Groups 1, 2, 3, 9) protocols. It also has an RS-232 serial
port (DB-9 connector) on the front panel for out-of-band management. A
PC may be connected to this port for configuration and monitoring
out-of-band via a null-modem serial cable. (See Appendix B for wiring
options.)
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VERVIEW
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Troubleshooting
