Black Box LMC5178A, LMC5177A Operation Manual

1000 Park Drive • Lawrence, PA 15055-1018 USA

TEL: [phone] • FAX: [phone]

E-MAIL: [e-mail]

WEB: http://www.blackbox.com

© 2005 Black Box. All rights reserved.

The information in this document is subject to change without notice. Black Box assumes no responsibility for any errors
that may appear in this document. Products are a trademark of Black Box. Other brands or product names may be
trademarks and are the property of their respective companies.

Document Number 50-80101BB-00 A0 January 2006

LAN Extender Modules

LMC5178A (CO)

LMC5177A (CPE)

Operation Manual

Notes:

11

Table of Contents

About the LAN Extender Modules . . . . . . . . . . . . . . . . .1

Getting to Know the LAN Extender Modules . . . . . . . . .1

Installing the LAN Extender Modules . . . . . . . . . . . . . . .2

Configuring the LAN Extender Modules . . . . . . . . . . . . .3

The 10/100 Twisted Pair Ethernet Port . . . . . . . . . . . . . .5

The VDSL Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Black Box Customer Service . . . . . . . . . . . . . . . . . . . . . .9

Fiber Optic Cleaning Guidelines . . . . . . . . . . . . . . . . . . .10

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Federal Communications Commission

Radio Frequency Interference Statement . . . . . . . . . . . .11

Warranty

Contact Black Box for warranty information.

Federal Communication Commission Radio
Frequency Interference Statement

This equipment has been tested and found to comply with the limits
for a Class B computing device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harm­ful interference when the equipment is operated in a commercial envi­ronment. This equipment generates, uses and can radiate radio fre­quency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communi­cations. Operation of this equipment in a residential area is likely to
cause harmful interference in which the user will be required to correct
the interference at his own expense.

Any changes or modifications not expressly approved by the manufac­turer could void the user's authority to operate the equipment.

The use of non-shielded I/O cables may not guarantee compliance
with FCC RFI limits. This digital apparatus does not exceed the Class B
limits for radio noise emission from digital apparatus set out in the Radio
Interference Regulation of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant les limites applicables aux appareils numériques de classe B pre­scrites dans le Règlement sur le brouillage radioélectrique publié par le
ministère des Communications du Canada.

1

10

About the LAN Extender Modules

LAN Extender Modules enable LAN and campus network managers and
service providers to use an existing phone-grade wiring plant to extend 10
Mbps and 100 Mbps Ethernet twisted pair interfaces by using Ethernet over
VDSL; the 100m distance limitation of twisted pair data cabling is no longer
a challenge.

Designed with VDSL (Very high-bit-rate Digital Subscriber Line) technolo­gy, the LAN Extender Modules allow the transmission of data over sub-stan­dard CAT3 and other telephone cabling to achieve substantially longer dis­tances. As a media and protocol converter, the LAN Extender Modules fea­ture the ability to transfer data both symmetrically and asymmetrically. You
can also configure bandwidth to ensure users are limited to a specified
amount rather than having access to the maximum achievable. LAN
Extender Modules deploy in pairs — one module at the central office (CO)
and another module at the customer premises (CPE).

Getting to Know the LAN Extender Modules

The LEDs

LAN Extender Modules feature several diagnostic LEDs. The
LED functions are as follows:

AN Glows amber when Auto-Negotiation is enabled.
DPX Glows amber when unit is operating in Full-Duplex.
ERRS Glows amber when errors are detected.
Sync Glows amber when a link is established on the VDSL Port.
100 Glows amber when Ethernet port is operating at 100 Mbps.
LNK Glows amber when a link is established on the Ethernet Port.
XMT Blinks amber when port transmits data.

RCV Blinks amber when port receives data.

The Ports

The LAN Extender Modules include:

• One VDSL port with an RJ-11 connector

• One 10/100 twisted pair Ethernet port with an RJ-45 con-

nector

NOTE

The LED functions are the same on both the

CO and CPE modules.

Fiber Optic Cleaning Guidelines

Fiber optic transmitters and receivers are extremely susceptible to cont­amination by particles of dirt or dust which can obstruct the optic path
and cause performance degradation. Good system performance requires
clean optics and connector ferrules.

1) Use fiber patch cords (or connectors, if fiber is being terminated)
only from a reputable supplier; low-quality components can cause
many hard-to-diagnose problems in an installation.

2) The manufacturer installs dust caps to ensure factory-clean optical
devices. These protective caps should not be removed until the
moment of connecting the fiber cable to the device. Assure that the
fiber is properly terminated, polished and free of any dust or dirt
and that the location is as free from dust and dirt as possible.

WARNING! Integrated circuits and fiber optic components are extremely
susceptible to electrostatic discharge damage. Components should only be
handled by a qualified service technician using tools and techniques that
conform to accepted industry practices.

3) Store spare caps in a dust-free environment such as a sealed plastic
bag or box so that when reinstalled they do not introduce any cont­amination to the optics.

4) Should it be necessary to disconnect the fiber device, reinstall the
protective dust caps.

5) If the optics appear to have been contaminated, alternate between
blasting with clean, dry, compressed air and flushing with methanol
to remove particles of dirt.

9

2

Specifications

Environmental

Operating Temperature: 32° to 122°F (0° to +50°C)
Storage Temperature: -13° to 158°F (-25° to +70°C)
Humidity: 5% to 90% (non-condensing), 0 – 10,000 ft. altitude

Power Consumption

Typical: 550mA

Black Box Cusomer Service

Order toll-free in the U.S.: Call 877-877-BBOX

(outside U.S. call 724-746-5500)
FREE technical support, 24 hours a day, 7 days a week

Call: 724-746-5500 or Fax: [phone]

Mail order: Black Box Corporation

1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.blackbox.com

E-mail: [e-mail]

Installing the LAN Extender Modules

Install the LAN Extender Modules in any of the following chassis:

1-Slot Desktop Chassis, AC (LMC5101A)

2-Slot Desktop Chassis, AC (LMC5201A)

2-Slot Desktop Chassis, DC (LMC5202A)

1-Slot FE Chassis (LMC5103A)

6-Slot Media Converter System (LMC5203A, LMC5204A, LMC5205A,
LMC5206A)

20-Slot Media Converter System (LMC5207A, LMC5208A)

Each module requires one slot in the chassis; always use the LAN Extender

Modules in pairs with one module at the CO and another at the CPE.

To install a module, remove any blank brackets covering the slots where it
will be installed by removing the screws on the outside edges of the bracket.
Slide the module into the chassis, via the card guides, until the module is
seated securely in the connector. Secure the module to the chassis by tight­ening the captive screw. Save any “blanks” removed during installation for
future use should configuration requirements change.

NOTE

Use only cross-over cables for the LAN Extender Module’s Ethernet Port.

3

8

The following chart states the approximate Upstream and Downstream

speeds for Synchronous data rates at various distances.

Bandwidth Control

Users can configure the amount of bandwidth of the data stream between
the VDSL ports of the Host CO and Remote CPE units via management only;
therefore, the Host CO module must be installed inside an SNMP-manage­able chassis. Please refer to the iView² help file for media conversion for
more information.

Negotiation

When deploying both a Host CO module and a Remote CPE module
inside an unmanaged chassis, the units will negoiate upwards to the highest
or maximum obtainable synchronous speed. For example at a 2Km distance,
the Upstream and Downstream data rates will each be 10 Mbps.
Negotiation can take up to 30 seconds.

Configuring the LAN Extender Modules

The LAN Extender Modules can be configured in both managed and
unmanaged environments. Directions for each configuration method fol­loow:

Managed Modules

To manage the LAN Extender Modules, an SNMP agent must be present.
Though iMediaChassis require a management module, iMediaCenter Series
chassis include embedded management. When using the LAN Extender
Modules in a managed environment, manually configure features which
cannot be configured via management software prior to installing the mod­ule. After completing hardware configuration, install the LAN Extender
Module, and configure additional features via the software.

The LAN Extender Modules are only SNMP-manageable and software
configurable if installed in a managed chassis. Some features may not be
software configurable on a remote unit.

Test the modules first in an unmanaged environment. To do this, remove
the management module from a managed 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.

NOTE

Management software will override any hardware settings (e.g.,
jumper, switch, etc.), so managed modules MUST configured, via
the software. Until this occurs, the module (and its LEDs) may not
work properly.

Distance Data Rate Type

Upstream
Data Rate

Downstream

Data Rate

Approx. Total
of Data Rates

500 m Synchronous 12.5 Mbps 12.5 Mbps

25 Mbps

1 Km Synchronous 10 Mbps 10 Mbps 20 Mbps

1.5 Km Synchronous 7.5 Mbps 7.5 Mbps

15 Mbps

1.75 Km Synchronous 5 Mbps 5 Mbps 10 Mbps

2 Km Synchronous 3.25 Mbps 3.25 Mbps

6.5 Mbps

7

4

The VDSL Port

The data rate of the 10Base-S VDSL port on a LAN Extender Module
(hereon referred to as the VDSL port) depends on the distance in use. This
includes bandwidth limiting, via management, of the data rate for various
distances. The following graph illustrates the correlation between the distance
and the speed. The sum of the Upstream and Downstream data rates is fixed by
the distance of the application. For example, if an application requires 1.5 Km,
there will be a maximum of 15 Mbps to distribute between the Upstream and
Downstream data rates. If Synchronous data rates are desired, configure 7.5
Mbps for Upstream and 7.5 Mbps for Downstream. Otherwise, speed can be
distributed in any combination between the Upstream and Downstream rates,
making data rates Asynchronous (12.5 Mbps and 2.1; 5 Mbps and 10 Mbps, etc).

The following chart provides examples of Synchronous and Asynchronous data
rates at various distances.

Unmanaged Modules

Before installing, configure an unmanaged LAN Extender Module for its
hardware-selectable features via DIP switches located at position S1. Refer
to diagram and switch chart below for settings.

FEATURE SWITCH FUNCTION DEFAULT

AN S1

Enables/disables Auto-Negotiation.

ON

Flow
Control

S3

Enables/disables Flow Control.

OFF

Selective
Advertising

S4

Used with Auto-Negotiation to advertise a specific
speed and duplex as determined by S5 and S6

OFF

Speed S5

When ON, the LAN Extender Module operates at
100 Mbps.
When OFF, the LAN Extender Module operates at
10 Mbps.

OFF

Duplex S6

When ON, the LAN Extender Module operates at
Full-Duplex.
When OFF, the LAN Extender Module operates at
Half-Duplex.

OFF

Host S8

Sets the CO module as a HOST, allowing manage­ment of the CPE (remote) module.
This switch is N/A for the CPE module; must be OFF.

ON

(CO module)

OFF

(CPE module)

Link Fault
Propagate

S9

Enables/disables Link Fault Propagate;
This switch is N/A for the CPE module; must be OFF.

OFF

S2 and S7 are reserved for future use — DO NOT CHANGE

S5 and S6 are only applicable if AN is set to OFF, or when using Selective Advertising.

S1

Enable

1

2

3

4567

8

Disabl

e

9

}

Flow Control

}

Auto-Negotiation

}

}

Selective Advertising

Speed

}

Duplex

}

}

Host*

}

Link Fault Propagate

}

Reserved

Reserved

25 Mbps

MAX

Speed

6.5 Mbps

500

m

10 Mbps

2

Km

MAX Distance

1.5

Km

15 Mbps

20 Mbps

1

Km

1.75
Km

Distance Data Rate Type

Upstream
Data Rate

Downstream

Data Rate

Approx. Total
of Data Rates

500 m Synchronous 12.5 Mbps 12.5 Mbps

25 Mbps

1.5 Km Asynchronous 2.1 Mbps 12.5 Mbps

15 Mbps

2 Km Asynchronous 2.1 Mbps 4.25 Mbps

6.5 Mbps

NOTE

Distances and speeds are approximate and depend on wiring qual­ity and gauge. The actual Ethernet speeds are lower than the
speeds listed due to VDSL overhead (10% overhead). The distances
listed in the chart are less than or equal to the values listed.

5

6

Forcing the Duplex Mode

The LAN Extender Modules’ Ethernet port can be manually configured
for either Half- or Full-Duplex operation. Before manually setting the
duplex mode, disable Auto-Negotiation (Set Dip Switch 1 to OFF.)

• Configure the Ethernet port for Full-Duplex by setting Dip Switch 6
to the ON position (Default).

• Configure the Ethernet port for Half-Duplex by setting Dip Switch 6
to the OFF position.

Forcing the Speed

The LAN Extender Modules’ Ethernet port can be manually configured­for 10 or 100 Mbps operation. Before manually setting the speed, disable
Auto-Negotiation (Set Dip Switch 1 to the OFF position.)

• Configure the Ethernet port for 10 Mbps operation by setting
Dip Switch 5 to the OFF position.

• Configure the Ethernet port for 100 Mbps operation by setting
Dip Switch 5 to the ON position.

Flow Control

Flow Control is used to throttle the END device to avoid dropping pack­ets during network congestion. Full-Duplex Flow Control will Advertise
ONLY in Full-Duplex Mode. Full-Duplex Flow Control functions ONLY if
the link partner (end device) also has Flow Control. Half-Duplex Flow
Control DOES NOT Advertise. Configure the Ethernet port on the LAN
Extender Modules for Flow Control by setting Dip Switch 3 to the ON posi-
tion.

Link Fault Propagate

Link Fault Propagate (LFP) is a troubleshooting feature. When LFP is
enabled and the Host CO unit detects that the Remote CPE does not have
a copper link, LFP will disable the Host’s copper transmitter. Configure CO
LAN Extender Modules for LFP by setting Dip Switch 9 to the ON position.
Do not enable LFP on CPE modules.

CO as Host for Remote Management of CPE

Configuring the CO LAN Extender Module as a Host allows remote man­agement of the CPE LAN Extender Module. Configure the CO LAN
Extender Module as a Host by setting the Dip Switch 8 to the ON position.
The VDSL ports must be connected and a link established prior to manag­ing the remote unit.

The 10/100 Twisted Pair Ethernet Port

The twisted pair Ethernet port on the LAN Extender Modules (hereon
referred to as the Ethernet port) auto-negotiates for speed and duplex
mode. These modules also provide the option of manually setting the speed
and duplex mode if the connected devices do not have the ability to auto­negotiate, or when Auto-Negotiation is not preferred.

Auto-NNegotiation

The LAN Extender Modules ship from the factory with Auto-Negotiation
enabled on the Ethernet port. In this mode, the Ethernet port negotiates for
speed and duplex (i.e. the module autosenses 10 Mbps Full-Duplex, 10
Mbps Half-Duplex, 100 Mbps Full-Duplex or 100 Mbps Half-Duplex with
Flow Control). Configure Auto-Negotiation on the LAN Extender Modules
with the management software or by adjusting the DIP switch (for unman­aged modules).

Selective Advertising

Selective Advertising, when used in combination with Auto-Negotiation,
advertises only the configured speed and duplex mode for the Ethernet
port. If Selective Advertising and Auto-Negotiation are both switched ON,
the Ethernet port’s speed (10 or 100 Mbps) and Duplex mode (FDX or
HDX) can be manually configured. Configure the Ethernet port for
Selective Advertising by setting Dip Switches 4 and 5 to the ON position,
then selecting the speed and duplex.

NOTE

If a specific speed and/or duplex mode is required, use Selective Advertising rather
than Force Mode, when connecting to devices that ONLY auto-negotiate. Selective
Advertising is NOT an option when disabling Auto-Negotiation