Bay Technical Associates Fiber Media Adapter User Manual

Using the BayStack
Ethernet Redundant
Fiber Media Adapter

Bay Networks, Inc. Corporate Headquarters
4401 Great America Parkway

Santa Clara, CA 95054

8 Federal Street
Billerica, MA 01821

March 1996

893-863-A

© 1996 by Bay Networks, Inc. All rights reserved.

Trademarks

Bay Networks, BayStack, and Bay Networks Press are trademarks of Bay
Networks, Inc. Other brand and product names are registered trademarks or
trademarks of their respective holders.

Statement of Conditions

In the interest of improving internal design, operational function, and/or reliability,
Bay Networks, Inc. reserves the right to make changes to the products described in
this document without notice. Bay Networks, Inc. does not assume any liability that
may occur due to the use or application of the product(s) or circuit layout(s)
described herein.

Related Publications

For more information about the installation and use of BayStackTM hubs and
optional equipment, refer to the following publications:

•

Using the BayStack 10BASE-T Hubs

(Bay NetworksTM part number 893-839-B)

•

Using the BayStack Ethernet Network Management Modules

(Bay Networks part number 893-841-A)

Ordering Bay Networks Publications

To purchase additional copies of this document or other Bay Networks publications,
order by part number from Bay Networks Press™ at the following numbers. You
may also request a free catalog of Bay Networks Press product publications.

• Phone: [phone]

• FAX: U.S./Canada: 1-800-582-8000, International: 1-916-939-1010

Introduction

This guide describes the Bay Networks 10BASE-FL RDN Media
Adapter for the BayStack 10BASE-T Hubs and provides
instructions for installing, connecting, and configuring the
adapter in the hub.

Each BayStack 10BASE-FL RDN Media Adapter consists of one
optional 10BASE-FL port that provides flexible, redundant
backbone connectivity and two diagnostic LEDs.

This guide contains the following sections:

• BayStack 10BASE-FL RDN Media Adapter

• LEDs

• Jumper

• Remote Signaling

• Redundant Links

• Fiber Optic Cable Length Limitations

• Installing a Media Adapter in a BayStack Hub
For more information about how the media adapter operates in

the hub, refer to
Networks part number 893-839-B). For more information about
hub compatibility with the 10BASE-FL RDN Media Adapter,
refer to

Release Notes for the BayStack 10BASE-T Hubs

Networks part number 896-086-A).

Using the BayStack 10BASE-T Hubs

(Bay

(Bay

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BayStack 10BASE-FL RDN Media Adapter

The BayStack 10BASE-FL RDN Media Adapter is a modular
10BASE-FL port.

The port is compatible with the IEEE 802.3 10BASE-FL
specification for Ethernet running over 62.5/125 µm or
50/125 µm multimode fiber optic cable.

10BASE-FL (fiber link) asynchronous signaling is fully
interoperable with fiber optic interrepeater link (FOIRL). Remote
signaling and redundant links are also supported. The redundant
10BASE-FL media adapter provides Rem (remote) and Rdn
(redundant) status LEDs. Jumpers allow you to set remote and
redundant link configuration.

Connection is made to the port using two fiber optic straight-tip
(ST) connectors (Tx and Rx).

TX

RX

Rem
Rdn

10BASE-FL RDN

5957

For more information on fiber optic cable connection and
limitation, see “Fiber Optic Cable Length Limitations” later in
this guide.

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LEDs

The BayStack 10BASE-FL RDN Media Adapter provides LEDs
to indicate remote signaling and redundant link status. These
LEDs are used in combination with the BayStack 10BASE-T
Hub “Media Adapter” LED to indicate the status of the active
and standby link.

Table 1 describes the redundant 10BASE-FL media adapter
LEDs.

Table 1. 10BASE-FL RDN Media Adapter LEDs

Label Color Meaning

Rem Green Fiber port is connected to a remote port that uses

Amber Fiber port is connected to a remote port that uses

Off Fiber port is not connected to another port that is

Rdn Green Port is in redundant mode and detects no fault.

Amber Port is in redundant mode, but this redundant port

Off Port is not in redundant mode.

remote signaling, and that port is not sending a
remote fault signal; both Tx and Rx connections
are good.

remote signaling, but the Tx link to the remote Rx
connector detects a remote fault.

capable of remote signaling.

connection has failed.

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