GarrettCom Magnum 3000 - Manual (Page 13)

Magnum 3000 Stackable Hubs Installation and User Guide (07/06)
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2.2 Product Description - Magnum 3000 Stackable Hubs
Magnum 3000 Stackable Hubs are suitable for small- to medium-size
enterprises needing an Ethernet local area network, either managed or unmanaged. They
will operate, individually or combined in a stack, as self-sufficient devices to provide
10BASE-T Ethernet connectivity for all local users and devices. Small independent
networks built using Magnum 3000 Stackable Hubs are easily expanded by adding units
in a modular (stacking) manner, interconnected via the Inter-Repeater Bus.
Magnum 3000 Stackable Hubs are available in two building-block models: the
3024, with 24 ports for low cost per port and high port density, and the 3012, with 12
ports for low entry-level or add-on cost. Both units have an internal power supply, a
metal enclosure for stand-alone or rack mounting, and convenient front access status-
indicator LEDs and RJ-45 port connectors.
Magnum 3000 Stackable Hubs are equipped with shielded RJ-45 connectors,
and support full length segments of Ethernet twisted pair media. An additional rear-
mounted bonus port may be configured for any media type using a Magnum Port Module
(PM), for applications such as connecting to a backbone up-link and segment isolation.
Only 1.75 (4.45 cm) high, the compact Magnum 3000 Hubs economize on rack and
wiring closet space.
Status-indicator LEDs consist of Power On (PWR) for the unit, and
Link/Partition (LINK) and Receive (RX) for each individual port. The LEDs for each
port are located immediately above the port connector for clear coordination of status
data with the associated port. Each LINK LED is steady ON when that twisted pair link
is operational, and flashing when that port is partitioned by hardware. Each RX LED
blinks when packets are received on the port.
The internal power supply is auto-ranging to handle any AC power type
worldwide, and each unit is normally convection-cooled for silent operation. Magnum
3000 Stackable Hubs operate in compliance with the IEEE 802.3 specification for
repeater functionality to perform signal amplification, re-timing, and regeneration of
preamble bits for each packet received. Consistent with IEEE 802.3 specifications,
Magnum 3000 Stackable Hubs will detect collisions, generate jam signals, extend
collision fragments, and automatically partition and re-connect individual ports.