SMC Networks EZ1026FMSC Manuale utente

SMC-1026DT V.2

Unmanaged Ethernet/Fast Ethernet Switch

User Guide

for

Expansion Module Series

SMC-EZ1026FMSC V.2

SMC-EZ1026GSSC V.2

SMC-EZ1026LXSC V.2

SMC-EZ1026GT V.2

EZ Switch 10/100

Introduction

The Expansion Module series for SMC-EZ-1026DT V.2 switch can be

installed into a number of 24+1/2 intelligent switch devices to provide 100

Mbps Fiber and 1000 Mbps UTP/Fiber connections to other compatible

network devices.

The Expansion Modules are designed to extend the distance between

the Switch and other devices or as backbone in the networking

infrastructure.

The Maximum distance connected by optical fiber is up to 2 Km

(multi-mode fiber) or 60 Km (single-mode fiber). You can regard this fiber

port as backbone in the networking infrastructure. There are four types of

fiber port connectors available for 100 Base-FX expansion modules, which

include SC/SC single-mode/MT-RJ/VF-45 connectors. For Gigabit fiber

expansion modules, there are two types of fiber port connector available,

which include 1000 Base-SX and 1000 Base-LX connectors.

Here is the list of the Expansion Modules:

1. Gigabit-SX Module (SMC-EZ1026GSSC V.2)—1000 Mbps operation

over multi-mode fiber optic cable

2. Gigabit-LX Module(SMC-EZ1026GLSC V.2)—1000 Mbps operation

over either single-mode or multi-mode fiber optic cable

3. 1000-T Module (SMC-EZ1026GT V.2)—1000 or 100/10 Mbps operation

over Category 5 or better unshielded twisted-pair (UTP) or shielded

twisted-pair (STP) cables

4. 100-FX SC Single-mode Module (SMC-EZ1026FMSC V.2)—100 Mbps

operation over single-mode fiber optic cable

Expansion Module Series ---

SMC-EZ1026GT V.2: Gigabit 1000 Base-T Module

Figure 1. 1000 Base-T N-Way Module Front View

Features:

One10/100/1000 Mbps N-Way auto-negotiation RJ-45 port

AutomaticMDI/MDIX supported

 Pause-Frame Base flow control on Full-duplex mode

Full-duplex modes supported

LED-indicators for 1000M, 100M, LK/ACT, FDX status

LED Indicators

There are four types of LED indicators for the RJ-45 Port. If there is no

connection to this port, the corresponding LED indicators are not lit.

 1000M The LED indicator is green when the port is connected to a

1000Mbps devices. This LED indicator is not lit when the port is

connected to a 10/100Mbps device.

 100M The LED indicator is

green when the port is connected to a

100Mbps devices. This LED indicator is not lit when the port is

connected to a 10/1000Mbps device.

 LK/ACT The LED indicator is green when there is a connection

secured to a device ( Link ) to the port . This LED indicator blinks when

there is a data transmission ( Activity ) taking place at the port.

 FDX The LED indicator is yellow when the port is operating in

Full-duplex mode. When the port is operating in Half-duplex mode, the

LED indicator is not lit. When collisions are occurring at the port, the

LED indicator blinks.

100Base-FX Fiber Module Series

1. 100Base-FX( SC ) Fiber Module

Figure2. 100Base-FX ( SC ) Module Front View

2. 100Base-FX( SC Single-mode ) Fiber Module

SMC-EZ1026FMSC V.2

Figure 3. 100Base-FX ( SC Single-mode ) Module Front View

3. 100Base-FX( MTRJ ) Fiber Module

Figure4. 100Base-FX (MT-RJ) Module Front View

4. 100Base-FX( VF-45 ) Fiber Module

Figure 5. 100Base-FX (VF-45) Module Front View

Features:

One 100Mbps fiber ports (SC/SC single-mode/MTRJ/VF-45 connectors)

Full-duplex modes supported

LED-indicators for LK/TX, RX, FDX/COL statuses

For establishing fiber links cable distance up to 2 Km (multi-mode) or 60

Km (single-mode)

LED Indicators

There are three LED indicators for the Fiber connection port. If there is no

connection to this port, the LED indicators will not lit.

 LK/TX The LED indicator is green when there is a connection secured

to a device ( Link ) to this port . This LED indicator blinks when there is a

data transmission taking place at this port.

 RX The LED indicator blinks when there is a data receiving taking

place at this port.

 FDX/COL The LED indicator is yellow when the port is operating in

Full-duplex mode. When the port is operating in Half-duplex mode, the

LED indicator is not lit. When collisions are occurring at the port, the

LED indicator blinks.

SMC-EZ1026GLSC V.2 :Gigabit 1000Base-LX/SC Fiber

Modules

SMC-EZ1026GSSC V.2: Gigabit 1000Base-SX/SC

Fiber Modules

Figure 6. Gigabit 1000Base-SX Module Front View

Figure 7. Gigabit 1000Base-LX Module Front View

Features

One 1000Mbps fiber port ( SX/LX connectors )

 Full-duplex modes supported

LED-indicators for LK, ACT statuses

 For establishing fiber links cable distance up to 500 m ( 1000Base-SX

SC multi-mode), 10 Km ( 1000Base-LX SC single mode).

LED Indicators

The are two LED indicators for the Gigabit Fiber connection port. If there is

no connection to this port, the LED indicators are not lit.

 LK The LED indicator is green when there is a connection securely to

a device ( Link ) to the corresponding port.

 ACT This LED indicator blinks green when there is a data transmission

( Activity ) taking place at the corresponding port.

Installation Steps

To install the Expansion Modules, follow these steps:

1. First of all, power off the switch, which you want to insert the module.

2. Insert the module into a SMC-EZ1026DT V.2 Switch module slot

and secure the retaining screws.

3. After the modules are installed, reset or reboot switch.

4. Connect the network cable to the module port and check the module

and network device for correct operation.

Details on these steps are provided in the following document.

Insert the Module Into the Slot

The modules are installed into SMC-EZ1026DT V.2 expansion slots

intelligent switch as follow:

1. Unscrew the thumbscrews on the blank bracket. Remove the blank

bracket and set aside, but do not discard it. Put the blank bracket back in if

you remove the new module.

Loosen these screws and remove the cover plate

2. Touch a grounded, metal object (such as a powered-on switch) to

discharge any static electricity on your body, then carefully remove the

module from its protective anti-static packaging. Hold the module

by its bulkhead or edges, taking care not touch any of its board

Components or metal connectors.

3. Install the new expansion Module by inserting it into the guides and

sliding it in until it stops. Press it firmly until you feel the module snap into

place. Never force, twist or bend the expansion Module.

4. Using the flat bladed or screwdriver, gently push the thumbscrews in

and turn clockwise to tighten. Do not over tighten the thumbscrews.

5. Power SMC-EZ1026DT V.2 ON, and the Switch will automatically

detect the expansion Module. Plug the network cable connector into

the expansion Module. Check the LEDs to verify that if there is a link

and proper connection.

Slide the module into the slot

until it sna

s into

lace

Cabling

 RJ-45 port can be use unshielded twisted pair (UTP) or

shielded twisted pair (STP) cabling. The cable must comply

with the IEEE 802.3u 100Base TX standard for Category 5.

The cable between the switch and the link partner ( switch,

hub, workstation, etc. ) must be less than 100 meters ( 328 ft. )

long.

 100Mbps Fiber port using multi-mode connector type must

use 62.5/125 um multi-mode fiber cable. You can connect two

devices over a 2-kilometer ( 6,562 ft. ) distance.

 100Mbps Fiber port using single-mode connector type must

use 9/125 um single-mode fiber cable. You can connect two

devices over a 60-kilo meter ( 186,852 ft. ) in full duplex

operation.

 1000Base-SX-fiber multi-mode must use 50/125 or 62.5/125

um multi-mode fiber cable. The fiber link distance of

1000Base-SX module is up to 500m (50/125um MMF) or

220m (62.5/125um MMF)

Optical Fiber Spec.

The maximum distance between any two fiber optic devices is

determined by a number of factors including the modules used in the

configuration. This table shows the specifications for each of the

available modules and will assist in determining which fiber optic

module is best for your installation.

Module Name Wavelength

( nm )

Avg. Lunch

Power

( dBm )

Avg.

Sensitivity

( dBm )

100 Base-FX module( SC ) 1300 -18 -30

100 Base-FX

module(SC-Single mode ) 1300 -6 -34

100 Base-FX module

( MT-RJ ) 1300 -15.7 -33.5

100 Base-FX module

( VF-45 ) 1300 -16 -33

Module Name

Avg. Power

Loss Budget

( dBm )

Max. FDX

Fiber Distance

( Km )

Fiber Size

( um )

100 Base-FX module( SC ) 12 2

62.5/125

50/125

100 Base-FX module

( SC-Single mode ) 28 60

9/125

8/125

100 Base-FX

module( MT-RJ ) 17.8 2

62.5/125

50/125

100 Base-FX

module( VF-45 ) 17 2

62.5/125

50/125

Troubleshooting

The section is intended to help you solve the most common problems on

the expansion modules.

Cabling

For UTP module, verify that the cabling type is correct. Be sure all

cable connectors are securely seated in the required ports. Use all

standard unshielded twisted-pair (UTP), Category 3, 4, or 5 cables for

10Base-T connection；or Category 5 for 100Base-TX connection. Make

sure the maximum distance between the Switch to the workstation, or

Switch is 100 meters (328 ft).

For Fiber module, verify that the networked device connected to the

module is the correct fiber type for the module used. See the table in

cabling section to identify which modules are supported by which network

devices. Verify that the cable length does not exceed the maximum

distances.

Faulty or loose cables

Look for loose or obviously faulty connections. If they appear to be OK,

make sure the connections are snug. IF that does not correct the problem,

try a different cable.

Improper Network Topologies

It is important to make sure that you have a valid network topology.

Common topology faults include excessive cable length and too many

repeaters (hubs) between end nodes. In addition, you should make sure

that your network topology contains no data path loops. Between any two

ends nodes, there should be only one active cabling path at any time. Data

path loops will cause broadcast storms that will severely impact your

network performance.

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