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Magnum DS880 Dual-Speed Stackable Hubs Installation and User Guide (05/01)
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2.6 Features and Benefits
Supports 10 or 100Mb network connections on each of eight RJ-45 ports
Magnum DS880 Dual-Speed 10 / 100 hubs combine two logical hubs . . . one at 10Mb
and one at 100Mb . . . in one physical box supporting two traffic domains. Each port
can operate at either 10 or 100Mb, independently of the other ports.
Auto-sensing for speed, 10 or 100Mb on each port
All ports support 10/100 auto-negotiation for speed, operating separately on each
port. Any mix of 10Mb and 100Mb users can be connected to the ports. Speed-
sensing is continuous. Individual ports can change to 100Mb or 10Mb speed at any
time, adapting automatically to any changes in the connected device’s speed. Speed-
sensing complies with IEEE 802.3u, providing interoperability with other products.
An internal switch connects the 10 and 100Mb domains on Model DS880-B
Model DS880-B has an internal switch for filtering / forwarding traffic between the 10
and 100Mb domains, allowing all connected devices to talk to each other. High
performance switching provides full bandwidth in each domain, unaffected by local
traffic on the other domain. One DS880-B per stack supports switching for all ports.
Stackable for flexible expansion
Magnum DS880s can be stacked up to four units high for 32 ports, each 10 / 100 dual
speed. As additional units are added in a stack, the 10 and 100Mb traffic domains are
expanded automatically to support the new ports at either 10 or 100Mb speed.
Installation is “Plug and Play”, Operation is Transparent to Software
The Magnum DS880-B operates as a hardware switch, only forwarding those packets
from each domain that are needed on the other domain. Internal address tables are
self-learning, enabling users to change port connections or 10 / 100 domains without
affecting operations. The switch in the DS880-B will not affect any standard software
applications or SNMP network management platforms.
Small Enclosure Enables Use in Offices and Labs
The compact packaging of Magnum DS880s allows them to be installed in offices and
labs, or virtually any location within reach of a standard AC wall outlet. They comes
in a durable metal enclosure for table-top or wall-mounting. They have an internal
auto-ranging power supply for use worldwide. (Models with a 48vdc internal power
supply are optionally available).