Black Box LGB2124A, LGB2118A, Gigabit Smart Switch Eco Fanless manual Specifications General

Chapter 1: Specifications

1. Specifications

1.1 General

Aging — Auto-aging with programmable inter-age time

Auto-Negotiation — Supports auto-negotiation for configuring speed and duplex mode

Blocking Prevention — Supports Head of Line (HOL) blocking prevention

Buffer Memory — Embedded 512 KB frame buffer

Cable Type and Maximum Length — Twisted-Pair (TP): CAT5 UTP cable, up to 328 ft. (100 m);

Fiber: 1000BASE-SX: up to 721.7/902.2/1640.4/1804.5 ft. (220/275/500/550 m), depending on multimode fiber type, 1000BASE-LX: Single-mode fiber, up to 6.2/18.6/31.1 mi. (10/30/50 km)

Filtering — Supports broadcast storm filtering

Flow Control — IEEE 802.3x flow control for full-duplex ports; collision-based backpressure for half-duplex ports

Forwarding/Filtering Rate (Packets per Second [PPS]) — 1,488,000 PPS at 1000 Mbps; 148,800 PPS at 100 Mbps; 14,880 PPS at 10 Mbps

MAC Address and Self-learning — 8K MAC address

Management — Web-based management provides the ability to completely manage the switch from any Web browser

Network Interface —

Table 1-1. Network interface.

Configuraton	Mode	Connector/Port Number
10/100/1000 Mbps Gigabit TP	Auto-negotiation	LGB2118A: TP (RJ-45) 1–16
		LGB2124A: TP (RJ-45) 1–24
1000BASE-SX Gigabit fiber	1000 FX	LGB2118A: *SFP 9, 10
		LGB2124A: **SFP 21–24
1000BASE-LX Gigabit fiber	1000 FX	LGB2118A: *SFP 9, 10
		LGB2124A: **SFP 21–24

NOTE: *Ports 9 and 10 on the LGB2118A SFP fiber ports and **Ports 21–24 on the LGB2124A are TP/SFP fiber dual media ports with auto detection function. Optional SFP modules support LC transceivers.

Priority Queueing — 802.1p Class of Service with 2-level priority queueing

Programmable Maximum Ethernet Frame Length — 1518 to 9600 bytes jumbo frames

Self-Learning and Address Recognition Mechanism — Enables forwarding rate at wire speed

Sniffer Function — Supported

Standards Compliance — IEEE 802.3/802.3ab/802.3z/802.3u/802.3x, IEEE 802.1ad QinQ;

LGB2118A also has: 802.3ad LACP

Store-and-Forward — Non-blocking store-and-forward shared memory Web Smart switched

Transmission Mode — 10-/100-Mbps support full- or half-duplex, 1000-Mbps support full-duplex only

Transmission Speed — 10-/100/1000-Mbps for TP, 100-/1000-Mbps for Fiber

Trunking — LGB2118A Only: Supports port trunking with flexible load distribution and failover function

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