Cisco Systems 116T User Manual

CHAPTER

1

Overview

The FastHub 116T is an unmanaged 16-port 100BaseT Class II repeater for workgroups
and server farms. It is a member of an extended network system of stackable, modular LAN
and WAN products that increase LAN performance, connect remote of fices and users, and
provide secure access. Figure 1-1 shows the network system units.

Figure 1-1 FastHub 116T in an Extended Network System of Stackable LAN and

WAN Products

Routers

Switches

Hubs

Redundant

power system

1x

2x

3x

4x

5x

6x

7x

8x

9x

10x

11x

12x

13x

14x

15x

16x

16

H10259

Overview 1-1

Feature Summary

Feature Summary

The FastHub has 16 fixed 100BaseTX ports (with an alternativ e uplink port for connecting
to other 100BaseTX hubs). Table 1-1 summarizes the FastHub features.

Table 1-1 Feature Summary
Feature Description

Compatibility • IEEE 802.3u Class II repeater compliant.

• Compatible with the 100BaseT standard for interoperability with
other 100BaseT products.

Performance 100-Mbps peak and aggregate throughput.
Redundancy Supports connection to the optional Cisco redundant power system

(RPS).

Front Panel Description

The front panel of the FastHub provides 16 100BaseTX ports, a 100BaseTX uplink port, a
set of LEDs, and a Mode button.

Ports

The ports on the front panel of the FastHub are all 100BaseTX ports with fixed RJ-45
connectors (see Figure 1-2). All ports are compatible with the 100BaseTX IEEE-802.3u
specification and can connect to any 100BaseTX device through standard Category 5
unshielded twisted-pair (UTP) cable.

1-2 FastHub 116T Installation Guide

Figure 1-2 Front Panel Port Connectors

Front Panel Description

RPS

1x

2x

3x

4x

5x

6x

7x

8x

9x

10x

11x

12x

13x

14x

15x

16x

MODE

100BaseTX ports

16

100BaseTX

uplink port

Ports 1x through 16x have their transmit (TD) and receive (RD) pairs internally crossed.
Standard Category 5 UTP crossover cable is required when connecting these ports to
another hub, switch, or router (unless you are connecting to the uplink port on another
FastHub or 100BaseT hub).

Port 16, which is to the right of port 16x, is the 100BaseTX uplink port. This uplink port is
not internally crossed. Standard Category 5 UTP straight-through cable is required when
connecting this port to another FastHub 100BaseTX port or to the 100BaseTX port on
another hub, switch, or router.

H10260

Caution You will disable both ports if you connect to both the uplink port (port 16) and

port 16x.

For more information on connecting to these ports, see the “Connecting from the
100BaseTX Ports on the FastHub” section in the “Installing the FastHub” chapter.

Overview 1-3

Front Panel Description

LEDs

You can use the FastHub LEDs to monitor network activity and performance. Figure 1-3
shows the location of the LEDs and the Mode button.

Figure 1-3 LEDs and Mode Button

power system

System status LED

Port mode LED

Redundant

LED

Mode

button

Port status LEDs

1x

Collision

LED

2x

3x

4x

H9261

H9909

RPS LED

The redundant power system LED shows the status of the RPS (see Table 1-2).

Table 1-2 RPS LED Description
Color RPS Status

Off Power OK (no RPS or RPS not powered up).
Solid green Power OK (RPS powered up and OK).
Solid amber Internal power supply not powered up, RPS connected but not OK.
Flashing green RPS and FastHub internal power supply are both powered up. Only one power

source can be supplying power to the FastHub.

If you are using the RPS, the FastHub power cord must not be plugged in. If
you are using the internal power supply, the RPS can be connected but must be
powered down.

1-4 FastHub 116T Installation Guide