3com Switch 4500G 24-Port Switch 4500G 48-Port Switch 4500G PWR 24-Port Switch 4500G PWR 48-Port ユーザーズマニュアル

HAPTER

1: I

NTRODUCING

THE

WITCH

4500G F

AMILY

For information about using the software features of the Switch, refer to the
“Command Reference Guide” and the “Configuration Guide”.

Summary of Hardware

Features

Table 2 summarizes the hardware features that are supported by the Switch
4500G.

Switch 4500G 24-Port
and 48-Port—Front
and Rear Panel Detail

Figure 1 displays the front panel of the Switch 4500G 24-Port unit.

Figure 1 Switch 4500G 24-Port—front panel

Table 2 Hardware Features

Feature

Switch 4500G

Addresses

Up to 8,000 supported

Auto-negotiation

Supported on all ports

Forwarding Modes

Store and Forward

Duplex Modes

Half and full duplex on all front panel ports

Auto MDI/MDIX

Supported on all ports. If fiber SFP transceivers are
used, Auto MDIX is not supported.

Flow Control

In full duplex operation all ports are supported.

The Switch 4500G ports can receive, but not send
pause frames.

Traffic Prioritization

Supported (using the IEEE Std 802.ID, 1998 Edition):
Eight traffic queues per port

Power over Ethernet

Supported on all front panel ports (3CR17171-91 and
3CR17172-91only

)

Ethernet, Fast Ethernet, and
Gigabit Ethernet Ports

Auto-negotiating 10/100/1000BASE-T ports or
100BASE-FX ports (3CR17181-91)

SFP Ethernet Ports

Supports fiber Gigabit Ethernet long-wave (LX),
long-haul (LH70) and copper (T), 100BASE-LX10, and
100BASE-FX transceivers in any combination.

Mounting

19-inch rack or standalone mounting

Clustering

Up to 32 (0–31) units can be linked together
(31 members and 1 commander)

(1) 10/100/1000 BASE-T autosensing
Ethernet port status LED

(2) Gigabit SFP Combo port status LED

(3) Console port

(4) 7-segment digitron display

(5) Power LED

((6) LED for extended slot 1

(8) LED for extended slot 2

(9) Mode LED

(10) Mode switching button

(6)

(7)

(8)

(9)