GarrettCom DS8016 - Manual (Page 15)

Magnum DS8016 Dual-Speed Stackable Hubs Installation and User Guide (07/06)
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LEDs to indicate operating status are on the front side. There are power (PWR)
and bridge-inside (BR) indicators for the unit. There are collision (COL) indicators for each
of the 10Mb and 100Mb domains,
for visual indication of the
operating status of each domain.
And there are link (LK/RX),
Partition and Magnum DS8016 Dual-Speed Hub
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 X
LK/RX
PORT
100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
PWR
COL 10
COL 100
BR
Magnum DS8016 Stackable Hub
100M/Auto indicators for each port. (See Section 1.1 “Specifications” for a technical
description of the LEDs). The unit has a cooling fan on the side which sends warm air out
away from the unit to the side. Stacking cables connect in the rear, except for the DS8016-R
model. (see Section 2.3 for stacking information).
The AC power cord connector, a universal recessed-male IEC type, is in the left
rear of the chassis. The internal AC power supply is auto-ranging for any AC power input of
115 - 230 vac, 50 - 60 Hz. (An internal DC power supply is optional, see Appendix A).
2.2.2
10 / 100 Speed Auto-sensing
All sixteen RJ-45 twisted pair ports support auto-sensing for speed, independent of
the other ports. Speed-sensing is performed by the DS8016’s electronics in accordance with
the standards of the IEEE 802.3u auto-negotiation standard. If the connected device or node
indicates that it is capable of 100Mb speed, then operation on that port will be at 100Mb/s. If
the connected device does not positively indicate that it is capable of 100Mb speed, then the
operation on that DS8016 port will be at 10Mbps. Of course, the hubs’ auto-negotiation
technique is only for 10 / 100 speed, and does not provide for any full-duplex operation.
When a port is connected and LINK is present, the speed on that port that has been
sensed by the DS8016 hub will be indicated by the ‘100M/Auto’ LED for that port. The
‘100’ LED is ON when 100Mb speed is sensed, and is OFF when 10Mb speed is in use.
When a port is not connected, the ‘100M/Auto’ LED corresponding to that port will be
blinking to indicate that it is trying to auto-negotiate. (See section 4.3 for operation of the
LED’s).