3Com IntelliJack NJ225FX, User Manual

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2 C
HAPTER
1: I
NSTALLING THE
I
NTELLI
J
ACK
• MAC filtering
• 802.1x port security
• User-configured VLAN IDs for management packets
• Port-based “calendar” function
About the NJ225
The following diagram shows the front, rear and bottom views of the IntelliJack:
1 RJ-45 switched PAN
(personal area
network) ports Four 10/100 Mbps auto-negotiation ports, which the NJ225
configures for 10 Mbps or 100 Mbps connections
automatically (green LEDs).
2 Port LEDs and
corresponding port
numbers Indicate network status of each of the four RJ-45 PAN ports.
3 RJ-45 LED Indicates the status of the LAN connection (white cable, green
LED). For more information, see “Checking the LEDs” on
page 13.
4 Power LED Indicates NJ225 power status (green). For more information,
see “Checking the LEDs” on page 13.
5 Pass-through port Provides a link to your LAN that passes through the NJ225
IntelliJack. The data or voice traffic is separate from and
unaffected by the NJ225 switch.
6 Power-forwarding
LED Lights when the IntelliJack is connected to—and forwarding
power to—an IEEE 802.3af- compliant device. For more
information, see “Checking the LEDs” on page 13.
7 Local power supply
cable strain relief Local power supply cable strain relief.
8 Power socket The NJ225 can be powered from a local power supply
(available for purchase from 3Com). This is required if your
network does not support Power Over Ethernet (PoE).