Black Box LBH150A, LBH240A, LBH600A, Black Box

Black Box® Heavy Duty Edge Switches Installation and User Guide(07/05)

Latency (not including packet time): 100 to 10 Mbps: 5µs

10 to 100Mbps: 15µs

Path Delay Value: 50 BT on all ports

LLL(Link-Loss-Learn): Factory default is activated on port 1 and 2

(allow to flush the internal address buffer , and qualify to use STP/RSTP for

faster recovery in ring topology)

Maximum Ethernet Segment (or Domain) Lengths

10BASE-T (Unshielded twisted pair) - 100 m (328 ft)

100BASE-TX (CAT 5 UTP) - 100 m (328 ft)

100BASE-FX, half-duplex: (multi-mode) - 412 m (1350 ft)

100BASE-FX, full-duplex: (multi-mode) - 2 km (6,562 ft)

100BASE-FX, half-duplex: (single-mode) - 412 m (1350 ft)

100BASE-FX, full-duplex: (single-mode) - 20 km (65,620 ft)

100BASE-FX, full-duplex: (single-mode, long reach) - 40 km (131,240 ft)