3Com Hubs and Switches warranty OfficeConnect LED Indicators, Fast Ethernet Hubs

Models: Hubs and Switches

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OfficeConnect Hubs and Switches at a Glance

 

 

 

 

 

 

 

 

 

 

 

-sensing

por

ts

 

 

 

 

(switches

only)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(L

D)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and

 

 

 

 

 

 

 

Management

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E

 

 

RJ

 

TCoax

 

TAUI

-TX

 

 

ast

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ethernet

 

 

 

full

 

ts

 

 

 

 

 

 

 

 

 

Management

 

 

 

 

 

 

 

 

 

 

 

auto

Autonegotiating

 

-

 

 

 

 

 

 

Ethernet

Utilization

 

 

 

 

-T

-45

 

 

 

 

 

E

 

Mbps

 

por

 

 

 

 

ast

 

 

 

 

 

-

10BA

-

 

10/100

 

 

 

Class

 

 

 

Network

 

 

W

 

10BA

 

10BA

 

 

 

100BA

 

 

 

 

F

 

Tr

 

 

 

S

 

S

 

SE

 

 

 

Ethernet/F

half

duplex

 

 

 

I

 

 

 

 

anscend

-based

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

E

 

E

 

 

 

 

 

S

 

 

 

 

-

 

 

 

 

 

 

I

epeater

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

eb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ethernet Hubs

OfficeConnect Hub TP4

4

 

 

 

 

 

 

 

OfficeConnect Hub TP4Combo

4

1

1

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub 8/TPO

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub 8/TPC

8

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub TP16C

16

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub 8/TPM

8

1

 

 

 

 

 

 

 

 

 

 

 

 

 

Fast Ethernet Hubs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub TP400

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub TP800

 

 

8

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Hub TP1200

 

 

12

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Dual Speed Hub 8

Up to 8

 

Up to 8

8

 

 

 

 

 

 

 

 

 

 

 

 

Switches

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Switch 140

4

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Switch 280

8

 

2

2

All 10

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Switch 400

Up to 4

 

Up to 4

4

All 4

 

 

 

 

 

 

 

 

 

 

 

 

OfficeConnect Switch 140M

4

 

1

 

 

 

OfficeConnect LED Indicators

 

 

 

 

Port Status LEDs (green/yellow)

 

 

 

 

 

Indicate the status of each port. If

 

Alert LED

 

 

Collision LED

green, the link between the port and

 

(orange)

 

Packet LED

(yellow)

the next piece of network equipment

 

Alerts you to

 

(OfficeConnect

Flashes each

is functional. If nothing is connected,

 

excessive net-

 

Hub TP4, 8/TPO,

time a collision

the LED will be off. If yellow, the port

Network

work use or

Power LED

TP400 only)

is detected on

has partitioned due to a fault on that

Utilization LEDs

an isolated

(green)

(yellow)

the network.

segment. The coaxial port LED

(green/yellow/

(partitioned)

Indicates that

Flashes each

Collisions are

(where applicable) can only be

orange)

10BASE-T port

the power

time a packet

part of normal

yellow or off. It will be yellow if

Indicate how much

and 100BASE-TX

supply to the

is received on

network

the port has partitioned or when

your network is

port.

unit is present.

a port.

operation.

the port is not terminated.

being used.

 

 

 

 

 

 

Port Status

 

 

 

 

Network

Utilization

Alert

PWR PKT

COLL

1

2

3

4

5

6

7

8 COAX

1%

2%

3%

6%

12% 25% 50% 80%

 

 

green + link OK, off = link fall, yellow = partition

 

 

 

 

 

 

 

 

 

 

 

 

 

As this front view of the OfficeConnect Hub 8/TPC illustrates, each OfficeConnect unit offers a variety of LED indicators, including an Alert LED to allow quick monitoring of hub and network activity. The Alert LED gives users immediate notification of problems, such as excessive network use, without requiring special technical knowledge.

H u b s & S w i t c h e s

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3Com Hubs and Switches warranty OfficeConnect LED Indicators, Fast Ethernet Hubs

Hubs and Switches specifications

3Com Hubs and Switches have been pivotal in networking technology, especially during the 1990s and early 2000s, when businesses were rapidly adopting Local Area Networks (LANs). Known for their reliability and user-friendly designs, 3Com's networking products laid the groundwork for the modern infrastructure we rely on today.

One of the main features of 3Com hubs was their ability to connect multiple devices on a single network. Hubs operate at the physical layer of the OSI model, functioning as simple connection points. They receive data packets from one device and broadcast them to all other connected devices. This made 3Com hubs an economical solution for small networks and home offices, enabling seamless communication but limiting bandwidth efficiency due to collisions in a shared network environment.

In contrast, 3Com switches brought significant advancements to networking technology. Operating at the data link layer, switches intelligently analyze incoming traffic and direct data packets only to the intended recipient. This feature reduces network collisions and enhances overall performance, particularly in larger networks. 3Com switches were designed for scalability, accommodating growing business needs while improving traffic management and bandwidth efficiency.

Another key technology associated with 3Com was their implementation of Virtual LANs (VLANs). VLANs allow network administrators to segment networks into smaller, isolated groups, even when devices are geographically dispersed. This enhances security and performance by controlling broadcast traffic and ensuring sensitive data remains separate.

3Com also prioritized ease of management with features like Simple Network Management Protocol (SNMP) for monitoring devices and traffic. Additionally, their products supported Power over Ethernet (PoE), simplifying installations by delivering power through Ethernet cables to devices like IP phones and security cameras, thus eliminating the need for separate power sources.

With robust build quality, 3Com hubs and switches ensured reliability in demanding environments. They offered a range of products catering to various needs, from small businesses to large enterprises. Though newer technologies have emerged since, the legacy of 3Com hubs and switches remains influential in the development of networking infrastructure, laying groundwork for today’s more advanced systems.