Magnum DS80F & DS80C Dual-speed Stackable Hubs | Installation and User Guide (12/01) |
2.2Product Description - General
The DS80F Dual-Speed Personal Hubs with a Fiber Port, and the DS80C model with all copper ports, offer the flexibility of 100Mbps switched fiber link upstream with the convenience of dual-speed 10/100 copper ports for workplace LAN connections.
Magnum D80F “Fiber” models have been designed with one full-duplex 100Mbps switched fiber port, one “N-way” switched RJ-45 and six half-duplex 10/100 auto-negotiating RJ-45 ports. The DS80C “Copper” model has been designed with all eight RJ45 ports, two switched ports with “N-way” capability and six half duplex 10/100 auto-negotiating ports. For half- or full duplex selection on the two switched ports, see sections 4.3 and 4.4.
Ports #3 to 8 can independently identify (via IEEE 802.3u auto-sensing) and accept either 100Mbps or 10Mbps Ethernet signals, adapting to match the highest speed of the connected device. While the switched fiber port is typically for a backbone connection (note – no media converter is required), the switched RJ-45 port can be used at 100Mb. FDX for
10Mbps Hub | 100Mbps Hub | | | DS80F or DS80C |
| 12V, 1.5Amps | | | | | |
| | | | | | | |
| | | Magnum DS80 Dual Speed |
| | Magnum 500-series | Personal Hub | | |
| | Power | Speed | | | | | | |
| | Error | Link/Act | | | | | | |
| GARRETT | | F/H | | | | | | |
| | PORTS | 1SW 2SW | 3 | 4 | 5 | 6 | 7 | 8 |
| Tx Rx | UPLINK | 1SW | 3 | 4 | 5 | 6 | 7 | 8 |
| UPLINK |
Figure 2.2.1: DS80F & DS80C is functionally both a 10Mbps and a 100Mbps hub in one high-performance workplace servers or to cascade to another DS80-series for expansion. There are separate internal traffic domains in Magnum DS80F & DS80C hubs, one for the 100Mbps traffic and one for the 10Mbps traffic.
DS80F & DS80C ports #3 to 8 can connect into either the 100 or the 10Mbps traffic domain, and can also change from one traffic domain to the other at any time without affecting the speed of other ports. The automatic per-port speed-sensing is always ready (it takes place at LINK enable, see Section 4.2 for details), allowing the connected devices to change speed at any time without impairing the operation of the other ports and connected devices.
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