GarrettCom 4K16 - Manual (Page 25)

Magnum 4K16 Switches Installation and User Guide (12/05)
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4.2 Status LEDs
For Magnum 4K16 models :
PWR : Power LED, ON when external power is applied to the unit.
L/A : Steady ON for link with no traffic, blinking indicates port is
transmitting and receiving.
F/H : Full / Half duplex LED, steady ON when the port is running full
duplex, blinking for half duplex collisions
Speed : Speed LED, ON when the speed is 100Mbps , OFF when the
speed is 10 Mbps.
4.3 Up-link Switch, for RJ-45 Port#1 only
Figure 4.3 : Up-link switch on RJ-45 Port#1
Magnum 4K16s each have one Up-link manual switch next to port #1 which it
controls, can be used while cascading with other hub switch or any communicating
device. The Up-link switch allows repeater-to-repeater connections without a special
cross-over cable. It works the same for 10Mb or 100Mb connections.
Move sliding switch to “=” (or ports 2 thru 16) for straight-through
twisted pair cabling from the 4K16 switched port to a user device, or to “X” for
cross-over or up-link segment connections from the first 4K16 port to a repeater or
hub or switch. Verify proper port connection by noting the port’s LINK/ACT status,
which is illuminated when a proper link is made and blinking when there is activity.
4.4 Auto-negotiation, for Fast Ethernet copper ports
One frequently-used application for the Magnum 4K16 Switch copper ports is
to connect one of them using a fiber media converter to another Switch in the network
backbone, or to some other remote 100Mb device. In this case, it is desirable to operate
the fiber link at 100Mb speed, and at either half- or full duplex mode depending on the
capabilities of the remote device. Standard commercially-available Fast Ethernet media
converters mostly do not support auto-negotiation properly, and require that the switched
port to which they are connected be at 100Mb fixed speed. Attachment to 10/100 auto-
negotiation ports typically will not work properly
When 4K16 Switch’s RJ-45 copper ports are set for auto-negotiation and
1 2 3 4 5 6 7 8C 8F 9F 9C 10 11 12 13 14 15 16
Col/FDX Col/FDX
Magnum 4K16-Series
Ethernet 10/100 Switch
F/H
POWER
ERROR
= X
L/A SPEED
F H F H