GarrettCom Quad - Manual (Page 38)

Magnum Quad-Series Fiber Switches Installation and User Guide (06/09)
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An address-aging algorithm causes least-used addresses to fall out in favor of
new frequently-used addresses. To reset the address buffer, cycle power down-and-up.
4.2 Status LEDs
For all Magnum Quad-Series models :
PWR : Power LED, ON when external power is applied to the unit.
LK : Steady ON, Link status for 10 Mbps and 100Mbps operation.
ACT : ON with port activity for 10 Mbps and 100Mbps operation.
F/H : Full / Half duplex LED, ON when the port is running full
duplex, OFF for half duplex.
100/10 : Speed LED, ON when the speed is 100Mbps , OFF when the
speed is 10 Mbps
4.3 Manual Switches for Up-link push-button, for RJ-45 quad-port
only
Figure 4.3 :
Up-link push-button
on RJ-45 quad-port
The module has a manual Up-link push-button, located on the front panel next
to 10/100Mb RJ-45 Quad-port # 1 which it controls. It enables the port’s cable to either
connect to a user station node (push in) or to be cascaded (push out) to a 10/100Mb
repeater or switching hub in the network. Verify proper Up-link push-button position by
noting Port 1’s LK (link) LED status, which is illuminated when a proper link is made.
4.4 Auto-negotiation, for Fast Ethernet copper ports
The Magnum Quad-Series Fast Ethernet copper ports can be set for either fixed
100Mb speed or for 10/100 F/H N-way auto-negotiation per the IEEE802.3u standard.
The selection is made via an internal jumper (see Section 3.4 for jumper-setting
instructions). The factory default setting is for auto-negotiation. At 100Mb-fixed speed,
the user may select half- or full-duplex mode by internal jumpers for each RJ-45 port
separately.
One frequently-used application for the Magnum Quad-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
100/10 FDX/HDX
LK
x
ACT
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