GarrettCom 1008 - Manual (Page 38)

Magnum 1000 Workgroup Hubs Installation and User Guide (04/02)
32
www GarrettCom com . .
directed outside the segment. A BPM connecting this segment to the rest of
the network, as shown in Figure 4.2e, will keep the local segment traffic
isolated from the rest of the network, thus increasing the effective bandwidth
on both the local segment and the rest of the network.
Figure 4.2e: Local Segment Isolation with a Bridge Port Module (BPM)
3. Bridge Transparency: The BPMs are transparent to both the users and
the application software.
4. LINK and Traffic Status: The Magnum BPM-TP and BPM-FST
indicate link integrity with an LED. This LINK LED is normally lit. An unlit
LINK LED indicates a broken cable or loss of power at some point in the
segment. All BPMs have FWD-I and FWD-X status LEDs. The FWD-I LED
flashes when packets are forwarded into the local segment. The FWD-X LED
flashes when packets are forwarded out of the local segment.
5. Self-test Diagnostics: A Magnum BPM requires 15 seconds upon power-
up before bridging services are available. During this time, the BPM performs
an internal self-test.
4.3 Power Requirements
Magnum 1000 Hubs are designed with internal auto-ranging AC power supply
units for efficiency and for simplicity of installation and operation. See Section 3.2,
“Powering the Magnum 1000 Workgroup Hub” for detailed information on the AC
power needed. See Section 1.1, “Technical Specifications: Power Supply (Internal)” for
detailed information on the internal power supply units.
For optional 48VDC internal power supply information, see Appendix B.
Local nodes with heavy local traffic,
connected to front RJ-45 ports
Magnum 1024 Workgroup Hub
Local segment isolation
through Bonus Port configured
with BPM (BPM-FST shown)