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Magnum DS8016 Dual-Speed Stackable Hubs Installation and User Guide (07/06)
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VAC 60Hz power cord is supplied with each unit shipped within the United States and
Canada.
Each Magnum DS8016’s auto-ranging power supply supports installation
environments where the AC voltage is from 90 to 260 volts with an input frequency between
47 and 63 Hz, and consumes a maximum of 27 watts. In order to power the unit up or down,
simply change the setting of the rear-mounted manual “On–Off” switch when there is
incoming power.
4.0 OPERATION
This chapter describes the function and operation of the Magnum DS8016 hubs.
4.1 Dual-Speed and Domain-Switched Functionality
The Magnum DS8016-A handles the two different traffic domains separately
(unless it is stacked with a DS8016-B), and the DS8016-E has only the 100Mb domain.
Alternatively, the domain-switched DS8016-B provides switched (bridged) connectivity
between the Ethernet (10Mb/s) and Fast Ethernet (100Mb/s) domains. It joins the two
network domains for unified operation, and filters/ forwards packets in both directions to
maximize bandwidth utilization and performance. Magnum DS8016s are hardware plug-and-
play devices. There is no software set-up to be done at installation or for maintenance. The
functions of the DS8016s are described in this manual.
Each time a packet is received on one domain of the bridge module, the decision is
taken to either to filter or forward the packet. Errored packets are always filtered. For good
packets, the filter and forward decisions are made based on the destination address contained
in each packet. If the destination address is on the same domain from which the packet
originated, then it is filtered and not forwarded to the other domain. If the destination address
is not found to be a match in the address table for the originating domain, then it is forwarded
to the other domain. If it is a new node address coming in which the switch did not
previously know about, it “learns” the new address and puts it in the correct port address
table. See “Address Learning” for more details.