3com 3848 사용자 설명서

HAPTER

1: I

NTRODUCING

THE

UPER

TACK

3 S

WITCH

3812, S

WITCH

3824,

AND

WITCH

3848

About the Switch

The Switch 3812, Switch 3824 and Switch 3848 units are
10/100/1000 Mbps Ethernet Switches which consist of either:

■

12 10BASE-T/100BASE-TX/1000BASE-T RJ-45 ports (Switch 3812) or

■

24 10BASE-T/100BASE-TX/1000BASE-T RJ-45 ports (Switch 3824) or

■

48 10BASE-T/100BASE-TX/1000BASE-T RJ-45 ports (Switch 3848)

and:

■

Four SFP ports

The highest four numbered RJ-45 ports are combination ports. When an
SFP module is inserted it has priority over the 10/100/1000 port of the
same number (9–12 on the Switch 3812, 21–24 on the Switch 3824, and
45-48 on the Switch 3848).

For information about using the software features of the Switch, refer to
the “Switch Management Interface Reference Guide” on the CD-ROM
that accompanies the Switch.

Summary of

Hardware Features

Table 3

summarizes the hardware features that are supported by the

Switch 3812, Switch 3824, and Switch 3848.

Table 3 Hardware features

Feature

Switch 3812, Switch 3824, and Switch 3848

MAC Addresses

Up to 16,000 supported

Forwarding Modes

Store and Forward

Auto-negotiation

Supported on all ports

Auto MDI/MDIX

Supported on all 10/100/1000 ports

Duplex Modes

Half and full duplex on all 10/100/1000 ports when
running at 10 Mbps or 100 Mbps.

SFP Gigabit Ethernet
Ports

Supports fiber Gigabit Ethernet short-wave (SX),
long-wave (LX) and long-haul (LH70) transceivers in any
combination

Flow Control

Supported on all ports

Traffic Prioritization

Supported (IEEE Std 802.1D, 1998 Edition)

Eight traffic queues per port

Fast Ethernet and
Gigabit Ethernet Ports

Auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T
and SFP ports

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