3Com 2900 manual Product Overview, Introduction

1 Product Overview

Introduction

The 3Com Baseline Switch 2900 Family are Layer 2 Gigabit Ethernet switches developed by 3Com. They are intelligent manageable switches designed for network environments where high performance, high-density port distribution, and easy installation are required.

With 10/100/1000 Mbps Ethernet interfaces, the 3Com Baseline Switch 2900 Family are mainly deployed at the access layer in enterprise networks requiring Gigabit to the Desktop (GTTD) application and at the distribution layer in metropolitan-area networks (MANs). In the latter deployment, the 3Com Baseline Switch 2900 Family provide GE electrical interfaces for user access or low-end switch convergence in the downlink direction. Whereas, in the uplink direction, they are aggregated to large-capacity Layer 3 switches or switches at the exchange office through their GE interfaces.

Table 1-1 shows the models and system specifications of the 3Com Baseline Switch 2900 Family.

Table 1-1The 3Com Baseline Switch 2900 Family system specifications

						Description
		3Com		3Com		3Com	3Com		3Com
Item		Baseline		Baseline		Baseline	Baseline		Baseline
		Switch		Switch		Switch	Switch		Switch
		2920-SFP		2928-SFP		2952-SFP	2928-PWR		2928-HPWR
		Plus		Plus		Plus	Plus		Plus
Physical	43.6 × 440 ×		43.6 × 440 ×		43.6 × 440 ×		43.6 × 440 ×	43.6 × 440 ×
dimension		160 mm (1.72	160 mm (1.72		260 mm (1.72		420 mm (1.72		420 mm (1.72
s (H × W ×	× 17.32 × 6.30		× 17.32 × 6.30		× 17.32 ×		× 17.32 ×	× 17.32 ×
D)		in.)	in.)		10.24 in.)		16.54 in.)		16.54 in.)
Weight		ñ 3 kg (6.61 lb)		ñ 3 kg (6.61 lb)		ñ 5 kg (11.02	ñ 7 kg (15.43		ñ 7 kg (15.43
						lb)	lb)		lb)
Console	1		1		1		1	1
port
	16 ×		24 ×		48 ×		24 ×	24 ×
		10/100/1000B	10/100/1000B		10/100/1000B		10/100/1000Ba		10/100/1000B
Service		ase-T	ase-T		ase-T		se-T		ase-T
		autosensing	autosensing		autosensing		autosensing		autosensing
ports
		Ethernet ports	Ethernet ports		Ethernet ports		Ethernet ports		Ethernet ports
		+ 4 GE SFP	+ 4 GE SFP		+ 4 GE SFP		+ 4 GE SFP		+ 4 GE SFP
		interfaces	interfaces		interfaces		interfaces		interfaces

1-1