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Black Box LMC5112C Manual

Download Manual  of Black Box LMC5112C Control Unit, Media Converter for Free or View it Online on All-Guides.com. This version of Black Box LMC5112C Manual compatible with such list of devices, as: LMC5112C, LMC5113C, LMC5115C, LMC5116C, LMC5117C

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2

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TX/SSFX Single-Strand Fiber

SNMP-Manageable Media

Conversion Modules

A BOUT L INK I NTEGRITY

During normal operation, link integrity pulses are transmitted by all point-

to-point Ethernet devices. When a Black Box media converter receives valid

link pulses, it knows that the device to which it is connected is up and send-

ing pulses, and that the copper or fiber cable coming from that device is

intact. The appropriate “LNK” (link) LED is lit to indicate this.

The Black Box media converter also sends out link pulses from its copper

and fiber transmitters, but normally has no way of knowing whether the cable

to the other device is intact and the link pulses are reaching the other end.

TX LinkLoss and FX LinkLoss allows this information to be obtained, even when

physical access to a remote device (and its link integrity LED) is not available.

W HAT

I S FX LINKL OSS?

When a fault occurs on the fiber segment of a conversion, FX LinkLoss

detects the fault and passes this information to the twisted pair segment. If a

media converter is not receiving a fiber link, FX LinkLoss disables the trans-

mitter on the media converter's twisted pair port. This results in a loss of link

on the device connected to the twisted pair port.

W HAT

I S TX LINKL OSS?

When a fault occurs on the twisted pair segment of a conversion, TX

LinkLoss detects the fault and passes this information to the fiber segment. If

a media converter is not receiving a twisted pair link, TX LinkLoss disables the

transmitter on the media converter's fiber port. This results in a loss of link

on the device connected to the fiber port.

C

ONFIGURING AND U SING TX AND FX LINKL OSS

TX/SSFX Modules ship from the factory with TX LinkLoss and FX LinkLoss

disabled. See the configuration chart on page 2 for instructions on enabling/

disabling these features. In a typical main site to remote site media conver-

sion, Black Box recommends you enable your media converters’ trou-

bleshooting features as follows:

• FX LinkLoss: Main Site • TX LinkLoss: Remote Site

This will ensure that any faults, no matter where they occur, can be

detected by an administrator located at the main site.

Auto-Negotiation on TX/SSFX Modules

TX/SSFX Modules include the feature Auto-Negotiation. When Auto-

Negotiation is enabled, the module negotiates as a 100 Mbps Full-Duplex

device; if the device the TX/SSFX Module is connected to can operate at 100

Mbps Full-Duplex, a link will be established. If the twisted pair port on the

other device does not have the ability to auto-negotiate, or if a 100 Mbps

Half-Duplex connection is desired, Auto-Negotiation on the TX/SSFX Module

must be disabled. Half- and Full-Duplex settings must be manually set and

match on both devices the TX/SSFX Module is connected to.

Dual wavelength, single-strand fiber TX/SSFX Media Converters from Black

Box perform a 100 Mbps Fast Ethernet copper to fiber conversion and allow

two wavelengths to share one fiber strand — Full-Duplex data travels on dif-

ferent wavelengths (1310 nm and 1550 nm) — doubling the capacity of

installed fiber. TX/SSFX Modules are IEEE 802.3 100Base-TX and 100Base-FX

Fast Ethernet compliant and install in any SNMP-manageable High Density

Media Converter System II chassis or any SNMP Manageable Media Converter

chassis from Black Box. Refer to your chassis’ manual for more information.

LMC5112C TX/SSFX SM-SC Matched Module Set contains the following

two modules:

LMC5113C: TX/SSFX SM-SC (1310xmt/1550rcv)

LMC5114C: TX/SSFX SM-SC (1550xmt/1310rcv)

LMC5115C TX/SSFX SM/PLUS-SC Matched Module Set contains the

following two modules:

LMC5116C: TX/SSFX SM/PLUS-SC (1310xmt/1550rcv)

LMC5117C: TX/SSFX SM/PLUS-SC (1550xmt/1310rcv)

Configuration Instructions

Following are instructions for configuring both managed (via an SNMP-

compatible management application like iView) and unmanaged modules.

M ANAGED M ODULES

In order to manage one or more TX/SSFX Modules, an SNMP agent must be

present:

Media Converter System II chassis include embedded management;

other SNMP-manageable media converters require a Master Module. When

configuring managed modules, install the module first (see page 4 for instruc-

tions), then configure it using the management software Within iView for

iMediaConverters (iView for iMc), troubleshooting and other features are con-

figured in the Module Detail section under the picture of the module. See the

iView for iMc online help file for more information.

Management software will override any hardware settings (e.g., jumper, switch, etc.), so you MUST config-

ure a module that will be managed via the software. Until a module installed in a managed chassis is con-

figured via the software, the module (and its LEDs) may not work properly.

NOTE

U NMANAGED

M ODULES

Before installing, TX/SSFX Modules may be configured for LinkLoss and Auto-

Negotiation. The diagram below shows the location of the DIP switch and

jumpers on TX/SSFX Modules.

DIP Switch and Jumper Settings for TX/SSFX Modules

Twisted Pair Crossover/Pass-Through Connection

TX/SSFX Modules include AutoCross, a feature which automatically selects

between a crossover workstation or pass-through/repeater hub connection

depending on the connected device. Note: a MDI/MDI-X switch is not required.

About FX and TX LinkLoss

TX/SSFX Modules include the following troubleshooting features:

• FX LinkLoss • TX LinkLoss

These are advanced troubleshooting features that can help you locate "silent

failures" on your network. However, it is vital that you understand exactly how

LinkLoss works, and how it will react in your network configuration, before

attempting to install the enclosed module(s).

OFF ON

8

7

6

5

4

3

2

1

JP2

FX

Jumper

LinkLoss

JP3

TX

Jumper

LinkLoss

TX/FX

Linkloss

TX/FX

Linkloss

Enabled Disabled

(Default)

Enabled Disabled

(Default)

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1

INSTALLATION TIP

When testing, Black Box recommends you test your module first in an unmanaged environment. To do

this, turn the SNMP management switch to OFF on an Media Converter System II chassis, or remove the

management module from other SNMP-manageable chassis. Follow the unmanaged configuration

instructions, then install the module, connect the cables and test the LEDs. When finished, reactivate

management and configure the unit via the software.

Installing modules without understanding the effects of LinkLoss can cause perfectly

functioning units to appear flawed or even dead.

These modules must be used in pairs, with one TX/SSFX Module on one end of the conversion and

another TX.SSFX module, or another single-strand fiber product from Black Box, at the other end.

NOTE

JP2 FX LinkLoss 1 - 2 2 -3

JP3 TX Linkloss 1 - 2 2 -3

JUMPER FUNCTION ON OFF

SWITCH FUNCTION DEFAULT

1 Auto-Negotiation OFF

2 - 8 Factory Configured -- DO NOT CHANGE VARIES

FX AND TX LINKL OSS C OMPARED

Feature

FX LinkLoss

TX LinkLoss

Fault Location

Fiber

Twisted Pair

Disabled LEDs

Twisted Pair

Fiber

LMC5112C — LMC5113C — LMC5114C LMC5115C — LMC5116C — LMC5117C