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Chapter 1: Specifications
1. Specifications
1.1 Physical Characteristics
Aggregate Bandwidth 128 Gbps for the LGB5128A switch
Buffer Architecture 1392 KB on-chip frame buffer
Network Interface Ports 1-20: SFP connector,
10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better)
100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better)
1000BASE-T: RJ-45 (100-ohm, UTP, or STP cable; Category 5, 5e, or 6);
Maximum Cable Length: 328 ft (100 m)
Ports 21-24: RJ-45 connector/(100/1000M) SFP;
Ports 25-28: 1G/10G SFP+
Switching Database 32K MAC address entries
Connectors (20) 10/100/1000Mbps SFP;
(4) Gigabit Ethernet Combo Port TP/ (100/1000M) SFP;
(4) (1G/10G) SFP+
Environment Temperature Tolerance: Operating: 32 to 140° F (0 to 60° C);
Humidity Tolerance: Operating: 5% to 90% (non-condensing)
Power Power A: 100 to 240 VAC, 50–60 Hz;
Power B: -36 VDC to -48 VDC
Power Supply:
Power A: Output: 12 VDC, 70 Watts
Power B: Output: 12 VDC, 70 Watts
Power Consumption: 55 Watts maximum
Dimensions 1.7"H x 17.4"W x 8.3"D (4.4 x 44.2 x 21.1 cm)
Weight 6.83 lb. (3.1 kg)
1.2 Switch Features
Forwarding Mode Store-and-forward
Throughput 130.9 Mpps
Flow control Full-duplex: IEEE 802.3x;
Half-duplex: Backpressure
