Accton Technology 12se User manual

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Installation Manual
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Stackable Fast Ethernet Hub with
8/12 10BASE-T/100BASE-TX Ports

Fast EtherHub Installation Manual
1
INTRODUCTION
General Description
The EH3008C and EH3012C 100BASE-TX 8/12 port stackable hubs
are entry level 100Mbps Fast Ethernet hubs. They are built around a
standard 19-inch chassis which allows stand-alone or rack-mounted
operation.
These 100BASE-TX 8/12 port stackable hubs are economical Fast
Ethernet hubs with 8/12 100BASE-TX (RJ-45) ports for workstation
connection. An uplink port in the front panel permits cascading to
another 100BASE-TX Fast Ethernet hub (when the hubs are not
stacked), or to a Fast Ethernet switch.
The EH3008C and EH3012C are compatible with the IEEE 802.3u
standard. They are easy to install, no DIP switch to set and no software
to load. Just plug in the power cord and connect up to 8/12
100BASE-TX station ports.
The LINK/ACTIVITY and ERROR indicate status for each port. The
Collision and Power LEDs indicate status for overall system.

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Key Features
❑Compliant with the IEEE802.3u 100Mbps repeater specification
❑8/12 100BASE-TX ports for Fast Ethernet connectivity
❑19-inch rack mountable
❑Supports Category 5 unshielded twisted-pair cabling (UTP)
❑Stackable architecture supports up to 4 hubs with 100BASE-TX
❑An uplink port on the front panel for cascading to another
100BASE-TX hub (when the hub is not stacked)
❑Individual port status LEDs for LINK/ACTIVITY and ERROR
indication
❑Global Collision status LED
❑Compliance with 100BASE-TX Class I (when stacked) and Class II
(when stand-alone)
❑Auto-partitioning of ports receiving excessive collisions

Fast EtherHub Installation Manual
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Package Contents
Check your package contents for the following parts:
æ8/12 port 100BASE-TX Fast Ethernet Stackable Hub
(Fast EtherHub-8se or Fast EtherHub-12se)
æPower Cord
æStackable Cable (D-Sub 25 pins)
æRack-mount Kit
æUser’s Manual
If any of these pieces are missing or are damaged, please contact your
dealer immediately.

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Hardware Description
The Front Panel
The front panel contains the 8/12 Shielded Twisted-Pair (STP) ports,
one uplink port, and LED indicators.
Shielded Twisted- Pair (STP) ports
Use any one of the STP ports for connection to a 100BASE-TX node
using Category 5 UTP cabling. Each of these ports provides 100Mbps
bandwidth for connection to a workstation or server.
UPLINK port
The uplink port provides cascading capabilities to a second
100BASE-TX Fast Ethernet hub (if the hub is not stacked).

Fast EtherHub Installation Manual
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LED indicators
The front panel LED indicators help you monitor the status of each port
and connected segments. There are 4 different LEDs on the front panel;
including power (PWR), collision (COL), LINK/ACTIVITY and ERROR.
This table lists the LEDs and their respective functions.
LED Function Color Description
Power (PWR) Green Lit: Power On
Unlit: Power Off
Collision (COL) Amber Lit: Data collision occurred
LINK/ACTIVITY Green Lit: Indicates the adapter is
connected to the hub
Blinking: Receiving data
ERROR Yellow Flashing: Data jabber or error
Lit: Indicates partition and
isolation of port

Fast EtherHub Installation Manual
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The Rear Panel
The rear panel of the hub contains the power socket , 2 D-Sub
connectors (25 pins) and air fans.
Power Socket
The power socket accepts AC power of 100 - 240V at 50 - 60 Hz.

Fast EtherHub Installation Manual
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HARDWARE INSTALLATION
Quick Installation Procedure
1. Place the hub on a smooth surface or mount it on a rack.
2. Connect power cord to hub and
plug in.
3. Connect workstations to hub
using Category 5 UTP cabling.
?Plug an RJ-45 connector into any port on the hub (other than
the Uplink port), and plug the other end into the RJ-45 port on the
workstation’s Fast Ethernet card. Distance between the hub and
the workstation can be no more than 100 meters.
4. Connect each device (up to 8/12) on your network using the process
described in Step 3.
?Make sure you have the correct wiring
To reliably operate your network at 100Mbps, you must use
Unshielded Twisted-Pair (UTP) Category 5, or better, Data Grade wire.
While Category 3 or 4 wire may initially seem to work, it will soon
cause data loss.

Fast EtherHub Installation Manual
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Select an Appropriate Location
A good location is at or near the center of all the computers you want to
link, close to the trunk segment and the other devices you want to
connect, and near a convenient power outlet.
?The cable route should not be near any power lines.
After you have decided on a particular location, you can place the hub
on the top of a table or a shelf, or mount it on a rack.
You may mount the hub on any EIA standard size 19-inch mounting
rack. First attach the supplied mounting brackets onto the sides of the
hub with screws. Afterwards, secure the hub onto the rack by screwing
on the mounting brackets.