Asante Technologies 1012 User Manual

AsantéBridge 1012

Users’ Guide

Information in this document is subject to change without notice and does not represent a commitment on the part of Asanté Technologies, In., No part of this manual, or any associated art­work, software, product design or design concept, may be copied, reproduced or stored, in whole or in part, in any form or by any means mechanical, electronic, optical, photocopying, record­ing or otherwise, including translation to another language or format, without the express written consent of Asset Technologies, Inc.

Unless otherwise noted, all names of companies, products, addresses, and persons contained herein are fictitious and are designed solely to document the use of an Asanté Technologies prod­uct.

Copyright 1992 by Asanté Technologies, inc. All rights reserved.
Printed in the United States of America.
Manual Reorder # 06-00012-00

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Ante Technologies, AsantéView, and AsantéHub 1012 are trademarks of Asanté Technologies, Inc.
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All other product names are trademarks or registered trademarks of their respective companies.

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If you do not agree to the terms of this agreement, promptly return the unopened software package(s) and the accompanying items (including written materials and binders or other con­tainer(s) to the place you obtained them for a full refund.

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office, or write: Asanté Technologies, In., 821 Fox Lane, San Jose, California 95131.

Tell Us What

You Think

There’s always room for improvement and Asanté Technologies is
always interested in your comments and suggestions about our
product documentation. If you take the time to make suggess­tions, we will take the time to read and consider them for new
documentation releases.

Do us a favor and read through this Users’ Guide and think about
these questions:

What do you like best about this Guide?

1
2

3

What do you think is the least valuable or weakest
part of this Guide?

What is the most needed improvement you would
make to this Guide?

Think about your answers and then give us a ring.
You can fax your comments and suggestions to:

Asanté Technologies
Attn: Technical Publications
[phone]

or E-mail them through Internet to:

[e-mail]

Table of Contents

Introduction i

About This Manual ii
Intended Audience iii
Conventions Used In This Manual iii
Tell Us What Your Think iv
Technical Support iv

Quick Start 1-1

Before You Start 1-2
Introducing the AsantéBridge 1-3

AsantéBridge Features 1-5

Quick View 1-6

AsantéBridge 1012 Front Panel 1-6
AsantéBridge 1012 Rear Panel 1-9
Interpreting LEDs 1-12

Installing the AsantéBridge 1012 1-13

Preparing for the Installation 1-13
What You’re Going to Do 1-14
Doing the Installation 1-14
The Next Step 1-21

Connecting to the Network 2-1

Before You Start 2-2
About Bridging 2-3

A Simple Transparent Bridge 2-4
A Spanning Tree 2-6

Using the 3in1 Port 2-8

Connecting to the BNC Port 2-8

Table of Contents

Connecting to the AUI Port 2-10
Connecting to the RJ45 IN and Out Ports 2-12

Configuring a Redundant Link 2-14

Checking the Link 2-14
An Example Configuration 2-15

Setting Up Out-of-Band Links 2-17

Linking the Hubs Together 2-17
Connecting Your Asanté Management Station for Out-of-Band Management 2-18
Configuring Hub DIP Switches 2-20

Connecting a VT100 Terminal 2-21
Default Settings 2-22

AsantéBridge 1012 Local Management 3-1

Before you start 3-2
Bridge Diagnostics 3-3
Local Management Menu System 3-4
General Help Menu 3-6
Configuration Menu System 3-7

System Information Menu 3-9
Password Menu 3-10
SNMP Agent Parameters Menu System 3-11
Out-of-Band Parameters Menu 3-21
Bridge Parameters Menu System 3-23
Resetting the Bridge 3-36

Statistics Menu System 3-38

Support for Pre 10BaseT Devices A-1
Technical Specifications B-1
Pinouts and Cable Specifications C-1

Table of Contents

List of Figures

Figure 1-1 The AsantéBridge 1012 page 1-3
Figure 1-2 Bridging between two segments page 1-4
Figure 1-3 AsantéBridge 1012 Front Panel page 1-6
Figure 1-4 AsantéBridge 1012 Front Panel page 1-8
Figure 1-5 AsantéBridge 1012 Rear Panel page 1-9
Figure 1-6 Interpreting LED Status Indicators page 1-12
Figure 1-7 Network Ready for Bridging page 1-13
Figure 1-8 Locating the AsantéBridge page 1-15
Figure 1-9 Rack-mounting the AsantéBridge page 1-16
Figure 1-10 Connecting to the External Port page 1-19
Figure 1-11 Single-Hub Host Connections Using RJ-45 Extension Cables page 1-20
Figure 2-1 A simple Ethernet network page 2-3
Figure 2-2 Bridging between segments page 2-4
Figure 2-3 Redundant bridging page 2-6
Figure 2-4 Interconnecting Hubs on Thin Ethernet Backbone page 2-9
Figure 2-5 Interconnecting using FOIRL (Fiber Optic Inter-Repeater Link) page 2-10
Figure 2-6 Interconnecting to Thick Ethernet Backbone page 2-11
Figure 2-7 Connecting an In-Band Daisychaining page 2-13
Figure 2-8 Redundant Links page 2-15
Figure 2-9 Out-of-Band Links page 2-17
Figure 2-10 Connecting the Asanté Management Station for Out-of-Band page 2-18
Figure 2-11 Connecting the AMS Link Extender page 2-19
Figure 2-12 Switch Settings Key page 2-20
Figure 2-13 Connecting the VT100 terminal page 2-21
Figure 3-1 AsantéBridge 1012 Diagnostics page 3-3
Figure 3-2 Local Management Main Menu page 3-4
Figure 3-3 Local Management Help Window page 3-6
Figure 3-4 Main Configuration Menu page 3-7
Figure 3-5 System Information Window page 3-9
Figure 3-6 Password Menu page 3-10
Figure 3-7 SNMP Agent Parameters Menu page 3-11
Figure 3-8 TCP/IP Parameters Menu page 3-12
Figure 3-9 Sofware Update Menu page 3-13
Figure 3-10 System Update Status Window page 3-16
Figure 3-11 SNMP Trap Receiver Table page 3-17
Figure 3-12 SNMP Community Name Table page 3-19
Figure 3-13 Out-of-Band Parameters Menu page 3-21
Figure 3-14 Bridge Parameters Menu page 3-23
Figure 3-15 Spanning Tree Bridge Parameters Menu page 3-24
Figure 3-16 Spanning Tree Port Setting Menu page 3-26
Figure 3-17 Bridge Forwarding Table page 3-27

List of Figures

Figure 3-18 Editing the Forwarding Table page 3-31
Figure 3-19 Searching for an Address page 3-32
Figure 3-20 Bridge Filtering Table page 3-34
Figure 3-21 Resetting the Bridge page 3-36
Figure 3-23 Bridge Statistics page 3-38
Figure A-1 Dummy Entry page A-2
Figure B-1 Dummy Entry page B-3
Figure C-1 RJ-45 to RJ-21 Pinouts page C-2
Figure C-2 Single Device Link — Amphenol Connector to 8-Pin Modular Jack page C-3
Figure C-3 RJ-45 Wall Jack to Modular Jack Pinouts page C-4
Figure C-4 Crossover RJ-45 Cable page C-4

List of Figures

Introduction

Introduction

About This

Manual

This manual is divided into the following sections:

Introduction

The Introduction covers the intended audience, conventions
used in this manual, questions addressed to the reader concern­ing this guide, and technical support information.

Chapter 1 — Quick View

An introduction to the AsantéBridge and installations instruc­tions.

Chapter 2 — Connecting to the Network

Suggestions for connecting the bridge to your network and
using the bridge for out-of-band management with AsantéView

2.2.

Chapter 3 — AsantéBridge 1012 Local Management

How to monitor, configure, and control your AsantéBridge
using the local management port and a VT100 terminal.

Page ii

Intended Audience

Intended

Audience

Conventions

Used In This

Manual

This manual is intended for Ethernet local area network (LAN)
administrators. Although it assumes some familiarity with the use
of AsantéView 2.2 as a network management tool, the manual
attempts to present information in a form understandable by peo­ple who do not have an in-depth understanding of network tech­nology.

Text that you are required to enter is generally displayed as
bolded:

This is text you should enter

When a procedure tells you to “enter
enter the text

exactly

as shown. If you are required to press

”, you should always

xyz

Enter

after entering the text, the procedure will tell you.

This kind of bolded text

is used when special emphasis is neces-

sary.
When certain information is noteworthy, it is presented in a spe-

cial format:

❖

Note: You must have AsantéView 2.2 In-Band to mange
the AsantéBridge 1012.

❖

When information is

especially

important, it is presented in the

following format:

❖

Important:

The software update function is complex and
should be understood before you attempt it. Please read
through the following description before you use this
command.

❖

Page iii

Introduction

Tell Us What

You Think

There’s always room for improvement and Asanté Technologies is
always interested in your comments and suggestions about our
product documentation. This is especially true for a beta manual
like this one. Please take the time to review the manual as care­fully as possible. We depend on your feedback to help us improve
both our product and this manual.

If you take the time to make suggestions, we will take the time
to read and consider them for new documentation releases.

Do us a favor and read through this Users’ Guide and think about
these questions:

1
2

3

What do you like best about this Guide?

What do you think is the least valuable or weakest part of
this Guide?

What is the most needed improvement you w ould make to
this Guide?

Technical

Support

Think about your answers and then fax your comments and sug­gestions to:

Asanté T echnologies
Attn: T echnical Publications
[phone]
or E-mail them through Internet to:
[e-mail]

Asanté Technologies is committed to providing you with reliable
products and excellent technical support. Please contact us with
any questions, concerns, or suggestions. You can reach us by tele­phone, letter, or electronic mail, from 6:00 AM to 6:00 PM, PST, at:

Technical Support
Asanté T echnologies, Inc.
821 Fox Lane
San Jose, CA 95131
[phone]
AppleLink address: Asante.TECH
Internet address: [e-mail]

Page iv

1

Quick Start

• Before You Start on page 1-2

• Introducing the AsantéBridge on page 1-3

• Quick View on page 1-6

• Installing the AsantéBridge 1012
on page 1-13

Chapter 1 — Quick Start

Before You

Start

This chapter is designed to get you up and running with the mini­mum possible effort.

Introducing the AsantéBridge

and acquaints you with its key features.

Quick View

AsantéBridge 1012, explaining the use and interpretation of all
controls, connectors, and LEDs.

Installing the AsantéBridge 1012

installation process. The AsantéBridge 1012 is designed as a “plug
and play” network device — just follow the simple instructions.
No specialized technical knowledge is necessary.

We recommend you read this chapter before you do the installa­tion. In particular, you should go through the
after you unpack your new AsantéBridge to become familiar with
its controls and indicators.

After completing this simple installation, continue to the next
chapter, “Connecting to the Network”, which provides detailed
information on different ways to connect the AsantéBridge.

takes you on a tour of the front and rear panels of the

tells you how the bridge functions

guides you through a simple

Quick View

section

Page 1-2

Introducing the AsantéBridge

Introducing

the

AsantéBridge

ASANTE

0000944007B3

The AsantéBridge 1012 is an AsantéHub 1012 that has a

ent two port bridge

Logically, the AsantéBridge looks like this:

Network Segment B

AsantéHub 1012

UTILIZATION

PWR CPU

1 3 5 10 20 30 50 65+ UPLINK

RESET

SNMP MSG

Late Collision
Misaligned CRC
Runts/Fragments
Short Event/Missing SFD

RJ45 10BaseT link to network
device on Network Segment A

Network Segment A

%

13510+

%

COLLISION

2 3 4 5 6 7 8 9 10 11 12

1

BRDG

LINK/RECEIVE

PARTITION

contained in the same chassis.

Connection between the bridge
external port AUI connector
and Network Segment B

Internal

Bridge

Internal connection between
the hub and the bridge hub port

1

234 5678 910 11 12

Transparent bridge
contained within the
AsantéHub chassis

10BASE-T PORTS

AsantéHub 1012

Connection between hub
3in1 Port on the back panel
and Network Segment A

transpar-

Figure 1-1 The AsantéBridge 1012

The bridge provides connections between two network seg­ments: One segment is the 1012 hub itself, to which you can con­nect other hubs, another backbone, or other network devices.
The second segment is connected via an AUI connector on the
back of the AsantéBridge 1012 unit.

This gives you the AsantéHub 1012 as the connection point for
segment A (connected internally to the bridge hub port) and a
second AUI connector (the bridge external port) for segment B,
enabling you to connect a variety of different Ethernet devices.

Figure 1-2 shows a simple two segment network.

Page 1-3

Chapter 1 — Quick Start

Thin Ethernet connected
to hub 3in1 port

Thin Ethernet connected
to hub 3in1 port

Thin Ethernet connected
to hub 3in1 port

AsantéHub 1012

ASANTE

RESET

0000944007B3

10BaseT to
network devices

AsantéHub 1012

Segment A 10Base5 backbone

AsantéBridge 1012

ASANTE

0000944007B3

Hub 3in1 Port connected to 
the Segment B 10Base5 backbone

Segment B 10Base5 backbone

AsantéHub 1012

ASANTE

RESET

0000944007B3

10BaseT to
network devices

RESET

10BaseT to
network devices
(also on Segment B)

AsantéHub 1012

ASANTE

RESET

0000944007B3

AsantéHub 1012

Bridge External Port connected
to Segment A 10Base5 backbone

AsantéHub 1012

BRIDGE

10BaseT to
network devices

Segment A connected
to the AsantéBridge External
Port

Segment B connected
to the internal
AsantéBridge Hub Port

AsantéHub 1012

Thin Ethernet connected
to hub 3in1 port

AsantéHub 1012

ASANTE

RESET

0000944007B3

AsantéHub 1012

ASANTE

RESET

0000944007B3

AsantéHub 1012

AsantéHub 1012

AsantéHub 1012

10BaseT to
network devices

AsantéHub 1012

ASANTE

RESET

0000944007B3

10BaseT to
network devices

Figure 1-2 Bridging Between Two Segments

The bridge card provides bridging between segment A and seg­ment B while the hub portion of the unit acts as a hub, connected
to the backbone on segment B. Any devices connected to the hub
are also part of segment B.

If the bridge is configured to block transmission of all packets
between segments, the hub is still active and continues to func­tion independent of any bridge activities.

Page 1-4

Introducing the AsantéBridge

AsantéBridge Features

❏ Fujitsu SPARClite RISC processor providing line-speed

forwarding of data

❏ Expandable memory and FLASH EPROM enable easy

upgrades to the bridge’s features and make the
AsantéBridge an “Applications Engine” for future inter­networking technologies. This investment protection
guarantees that the AsantéBridge will be a valuable net­work addition for years to come.

❏ Controls and displays bridge parameters and statistics

via AsantéView In-Band, Out-of-Band, and VT100 termi­nal interface

❏ Supports the following:
❏ 4096 dynamically learned entries in the forwarding table
❏ 512 static entries in the forwarding table
❏ 10 address and packet type ranges in the filtering table
❏ Spanning Tree Algorithm 802.1d
❏ SNMP
❏ IETF defined MIB for bridge management
❏ SNMP MIB I and II
❏ Provides comprehensive LEDs for a at-a-glance monitor-

ing of bridge parameters

Based on Fujitsu’s powerful SPARClite RISC processor,
AsantéBridge 1012 forwards data at line speed, without interfer­ing with or degrading network perf ormance of traffic crossing the
bridge. The high performance RISC processor with expandable
memory and FLASH EPROM make the AsantéBridge 1012 a power­ful “Application Engine” for future internetworking technologies.

AsantéBridge 1012 also includes SNMP capabilities and is a com­plete plug-in replacement for users of the AsantéHub 1012’s cur­rent SNMP Module. The AsantéBridge option card is designed to fit
into the expansion slot of the AsantéHub 1012.

AsantéBridge 1012 reinforces Asanté’s commitment to standards­based networking, supporting the following:

❏ IEEE 802.3 for Ethernet
❏ IETFdefined MIB for bridge management
❏ IEEE 802.1d bridge spanning tree algorithm
❏ SNMP MIB I and II for standards-based bridge and hub

management

❖ Note: AsantéView 2.2 In-Band is required to manage the

AsantéBridge 1012.

❖

Page 1-5

Chapter 1 — Quick Start

Quick View

AsantéBridge 1012

Front Panel

CPU Activity
LED

Power LED

PWR CPU

RESET

SNMP MSG

Hub Utilization
LEDs

UTILIZATION

1 3 5 10 20 30 50 65+ UPLINK

Late Collision
Misaligned CRC
Runts/Fragments
Short Event/Missing SFD

Reset
Button

ASANTE

0000944007B3

Uplink
Partition LED

%

13510+

%

COLLISION

Before you install the AsantéBridge 1012, you should become
familiar with both the front and rear panels. The following illustra­tions show the front and rear panels. Sit down in front of your
unit and find each of the items shown in the illustrations, then
locate the item in the following text.

Look at the AsantéBridge front panel as shown in Figure 1-3. All
controls and indicators are labeled with a brief definition.

Bridge Spanning Tree
Status LEDs

2 3 4 5 6 7 8 9 10 11 12

1

BRDG

LINK/RECEIVE

Port
Partition LEDs

PARTITION

Bridge External
Port Status LEDs

BRIDGE

EXT PORT HUB

1

234 5678 910 11 12

STATUS STANDBY ACTIVERCV FWD COL

10BASE-T PORTS

Bridge Hub
Port Status LEDs

RCV FWD COL

AsantéHub 1012

BRIDGE

Physical
Address

SNMP Agent
Activity

MSG LED

Hub Status LEDs

Bridge/Uplink Link/Receive LEDs


Port Link/Receive LEDs

RJ45 Port Connectors


Figure 1-3 AsantéBridge 1012 Front Panel

Physical Address

This is the physical address of this AsantéBridge 1012; preset at
the factory and cannot be modified.

Reset button

Allows you to reset all bridge and hub software. Any packets
currently buffered are lost. When the bridge resets, power on
diagnostics run automatically. The power LED goes off momen­tarily when the diagnostics run.

Power LED

Lights when the AsantéBridge 1012 is turned on.

CPU Activity LED

This LED flashes when bridge or hub activity occurs; if the LED
remains off, a hardware problem exists.

Page 1-6

Quick View

SNMP LED

Flashes when the SNMP agent module is installed in the
AsantéBridge 1012.

MSG LED

If on, status messages are waiting; you must use AsantéView to
read them.

Hub Utilization LEDs

This top row of eight LEDs indicates an approximation of hub
segment (not bridge) bandwidth utilized at any given time.

Hub Status LEDs

This bottom row of eight LEDs provides warning and packet
collision data about the hub (not the bridge); the first four are
warning LEDs, the second four tell you the total percentage of
packet collisions occurring at any instant.

Uplink Partition LEDs

These two LEDs indicate partitioning of the SNMP ports,
respectively.

If the LED remains on— the port has been partitioned by a

user.

If the LED flashes — the port has been partitioned automati-

cally because more than 31 consecutive bad frames were
received on the port.

Bridge/Uplink Link/Receive LEDs

These LEDs indicate a connection and activity on either the
bridge local management port or uplink (3in1) port. These
LEDs flash when there is normal traffic on the ports.

Port Partition LEDs

These twelve LEDs indicate partitioning of the hub (not bridge)
10BaseT ports.

If the LED remains on— the port has been partitioned by a

user.

If the LED flashes — the port has been autopartitioned as a

result of some condition.

Port Link/Receive LEDs

These twelve LEDs indicate a connection on the respective
10BaseT port; if the LED is flashing, there is traffic on that port.
The faster the LEDs blink, the higher the traffic rate.

Page 1-7

Chapter 1 — Quick Start

Bridge External Port Status LED

There are three separate LEDs:

RCV flashes when a packet is received on the external port.
FWD flashes when a packet is forwarded from the hub port to

the external port.

COL flashes when a packet collision is detected on the bridge

external port.

Bridge Spanning Tree Status LEDs

STATUS flashes when the bridge is still alive in the spanning

tree configuration.

STANDBY is on when the bridge is on standby or blocking in

the spanning tree.

ACTIVE is on when the bridge is the active or forwarding

bridge in the spanning tree.

Bridge Hub Port Status LEDs

There are three separate LEDs:

RCV flashes when a packet is received on the hub port
FWD flashes when a packet is forward from the e xternal port to

the hub port.

COL flashes when a packet collision is detected on the bridge

hub port.

CPU Activity
LED

Power LED
Reset

Button

ASANTE

0000944007B3

Physical
Address

SNMP Agent
Activity

MSG LED

PWR CPU

RESET

SNMP MSG

Hub Utilization
LEDs

UTILIZATION

1 3 5 10 20 30 50 65+ UPLINK

Late Collision
Misaligned CRC
Runts/Fragments
Short Event/Missing SFD

Hub Status LEDs

RJ45 Port Connectors

These are the twelve 10BaseT ports provided by the hub; each
port can be connected to an Ethernet device, including another
hub.

Uplink
Partition LED

%

BRDG

13510+

%

COLLISION

Bridge/Uplink Link/Receive LEDs


PARTITION

2 3 4 5 6 7 8 9 10 11 12

1

LINK/RECEIVE

Port Link/Receive LEDs

Bridge Spanning Tree
Status LEDs

Port
Partition LEDs

Bridge External
Port Status LEDs

BRIDGE

EXT PORT HUB

1

234 5678 910 11 12

STATUS STANDBY ACTIVERCV FWD COL

10BASE-T PORTS

RJ45 Port Connectors


Bridge Hub
Port Status LEDs

RCV FWD COL

Figure 1-4 AsantéBridge 1012 Front Panel

AsantéHub 1012

BRIDGE

Page 1-8

Quick View

AsantéBridge 1012

Rear Panel

Bridge External
Port Link/Receive LED

Bridge External
Port AUI Connector

RJ21 10 BASE-T PORTS

RJ21 Port Connector 3in1 Port:

IN or OUT

RJ45 In/Out
BNC
AUI

The AsantéBridge 1012 rear panel provides the following connec­tors:

❏ 50-pin T elco
❏ 3-in-1 Uplink (network)
❏ two LED status indicators for the uplink
❏ RS 232 port for PC or terminal connection
❏ dedicated AMS link
❏ external port for the bridge

Bridge/Hub
RS 232 Port

AMS Out-of-Band
Link Ports

THROUGH

AMS LINK

END

UP=PC

DOWN=TERMINAL

Through/End

DIP Switch

PC/Terminal
DIP Switch

Fan AC Power AC Line

2A/250V Slow Blow Fuse

Replace Only With Fuse of Same Rating

Spare Fuse in Fuse Holder

On/Off Switch

BNC

3-IN-1 UPLINK

Bridge External
Port Collision LED

Bridge VT100
Local Management Port

AUI

PARTITION
TRAFFIC

RS232

3in1 Port Partition
and Traffic LEDs

Fuse

Figure 1-5 AsantéBridge 1012 Rear Panel

RJ21 Port Connector

Used for linking the twelve hub 10BaseT ports directl y through
a telephone punchdown block; the RJ21 ports are in parallel to
the RJ45 ports on the front of the unit, but they cannot be used
simultaneously with the RJ45 ports. For example, if port 5 is
used on the front panel (RJ45), you cannot also use port 5 on
the RJ21 port.

3in1 Port

This is a single port with three different possible media options.
The port provides a network link between the hub (not the
bridge) and another hub or a network backbone. You can use
any one of the three types of connectors: AUI, BNC, or RJ45 In/
Out.

Page 1-9

Chapter 1 — Quick Start

Bridge External Port AUI

This AUI port is the external port for the bridge (not the hub),
which is used to connect the bridge to a segment in your net­work. The actual connection should be made using a MAU with
the appropriate network media connector.

Bridge External Port Link/Receive LED

This LED is on when another network segment is connected to
the external bridge port via the AUI connector; flashes when
packets are received on the port.

Bridge External Port Collision LED

Flashes when a collision is detected on the bridge external
port.

Bridge VT100 Local Management Port

Connect a VT100 terminal or a Macintosh or PC running VT100
emulation software to this port (9600 baud only). All bridge
local management functions are controlled from this port using
the VT100.

Do not use AsantéView Out-of-Band with this port!

3in1 Port Partition and Traffic LEDs

The top LED is on when any one of the 3in1 ports (AUI, BNC,
RJ45) has been partitioned. The LED blinks if the port is auto­partitioned.

The bottom LED is on when the 3in1 port is connected and
flashes when there is traffic on the port.

Bridge/Hub RS232 Port

This is an RS232 serial data port used to connect AsantéView
Out-of-Band only. This port cannot be used for any local man­agement function.

AMS Out-of-Band Link Ports

Modular RJ45 jacks dedicated for use in daisychaining hubs
together for AsantéView out-of-band network management and
for connecting your AsantéView Management Station using the
AMS Link Extender cable.

Through/End DIP Switch

This DIP switch enables or disables termination for the out-of­band daisychain links.

How to set the switch

Choose either end hub on the daisychain.
Set the switch to the

DOWN position.

Page 1-10

Quick View

Set the switch on all other hubs in the daisychain to the UP
position.

Only one hub at the end of the daisychain can have this
switch down. All others hubs in the chain must have it up.

PC/Terminal DIP Switch

This switch controls the configuration for the Bridge/Hub
RS232 port and the AMS out-of-band link ports. How you set the
switch depends on how y ou connect your Macintosh or PC run­ning AsantéView Out-of-Band.

If you are running AsantéView Out-of-Band and your Asanté
Management Station is connected to the Bridge/Hub RS232
port, set this switch
hubs in the out-of-band daisychain must be set

If you want to use the Bridge/Hub RS232 port for local manage­ment, set this switch DOWN.

If you are running AsantéView Out-of-Band and your Asanté
Management Station is connected to the AMS Link port, set this
switch

DOWN on all hubs on the out-of-band daisychain.

UP. The PC/Terminal switches on all other

DOWN.

Fan

This is a small cooling fan for the AsantéBridge 1012. The fan
should turn on when the unit is powered on. Do not operate
the hub if the fan does not come on.

AC Power Connector

Plug the AC power cord into this connector.

AC Line Fuse

The AC fuse for the unit is behind this cover plate. You must
remove the plate to access and replace the fuse.

Included in each hub is a spare fuse. To access the spare fuse,
pry out the fuse holder with a flathead screwdriver. With some
units, this can take extra effort. The fuse holder slides straight
out from the back of the Hub. The spare fuse is in a small black
box inside the fuse holder. To open, push out from one end.

On/Off Switch

Turns the AsantéBridge 1012 on and off.

Page 1-11

Chapter 1 — Quick Start

Interpreting LEDs

The AsantéBridge front panel LEDs provide status information on
both overall device utilization and for specific configuration and
fault conditions. Figure 1-6 shows you how to interpret the dis­play.

Power/CPU Status
PWR CPU

0-1%
+1-3%
+3-5%

+5-10%
+10-20%
+20-30%
+30-50%

+50-65% and over

Partition

Link/Receive

1

Link present = Physical link at port or Link Test disabled

Power Off, CPU Off
Power On, CPU Normal
Power On, CPU Failure
Power On, CPU Failure

Utilization LED Interpretation

1

3 5 10 20 30 50

Port

operator

partitioned

1



Link present

Traffic

1, 2

Warning LED Interpretation

1

Warnings may apply to any port on the hub.

Use the AsantéView Port Control command to isolate.



2

More than one warning type may be present.

Link/Partition LEDs

No

partition

Link present

No traffic

LED Key

ON
OFF

FLASHING

65+

Late Collision

Misaligned/CRC error
Runt/Fragmented packets
Short event/Missing SFG

Port
auto

partitioned

No link

Page 1-12

Bridge LEDs

No

HUB PORT

FWD COL

Forwarding

packets

No

traffic

RCV

Receiving

packets

No

traffic

EXT PORT

FWD COL

Forwarding

packets

No

traffic

Collisions
occurring

No

collisions

STATUS

Transmitting

configuration

data



Not transmitting

configuration

data



STANDBY

This bridge is on

standby in a

spanning tree

This bridge is

active in a

spanning tree

ACTIVE

RCV

Receiving

packets

traffic

Figure 1-6 Interpreting LED Status Indicators

See “AsantéBridge 1012 Front Panel” on page 1-6 for expanded
definitions for all LEDs on the AsantéBridge 1012 front panel.

Collisions
occurring

No

traffic

Installing the AsantéBridge 1012

Installing the

AsantéBridge

1012

Preparing for the

Installation

This section tells you how to quickly install your new
AsantéBridge 1012 between two segments in a network and how
to connect other network devices to the RJ45 ports.

This is a very simple installation guide designed to get your
AsantéBridge up and running with minimum effort. For more
detailed information on different ways you can install your
AsantéBridge, please see the next chapter, “Connecting to the
Network.”

You need to make sure you have certain items ready before doing
the installation.

❏ A cabling scheme that creates two discrete network seg-

ments. Typically, you will have an Ethernet configuration
similar to the one shown here.

A

Future Segment A

Future bridging point

B

Future Segment B

Figure 1-7 Network Ready for Bridging

❏

Users must be warned that there will be a very short

Ethernet Backbone

interruption in network service (probably no more than
a few minutes). You may want to schedule this installa­tion for a time when there is little network traffic.

❏ AnRJ45 extension cables long enough to reac h fr om the

AsantéBridge to the network nodes you w ant to connect
(to a maximum of 100 meters). You will also need an
extension cable to pretest the unit.

❏ Two male BNC connectors to be attached to the back-

bone at the bridging point.

❏ Two MAUs (Media Access Unit) with an AUI connector

on one side and a BNC connector on the other side.

Page 1-13

Chapter 1 — Quick Start

❏ At least one device configured for connection to your

Ethernet. We recommend that you use a Macintosh or
PC with AsantéView 2.2 network management software
installed, although you can use any device that normally
connects to and communicates over your Ethernet net­work.

❏ An RJ45 extension cable to connect your network

device to the AsantéBridge 1012.

Tools

You need the appropriate tools for attaching BNC connectors to
Ethernet coaxial cable, and a small Phillips screwdriver to con­nect the MAUs.

Basic Installation

Procedures

Installing your AsantéBridge 1012 is a simple five step procedure:

❏ Unpack your AsantéBridge
❏ Physically position the unit, either on a desktop or with

a wall or rack mount

❏ Turn on the unit and pretest it
❏ Connect two network segments
❏ Connect two or more network devices to the bridge

Unpacking the AsantéBridge 1012

Your AsantéHub package includes:

❏ The AsantéBridge 1012
❏ AC power cable
❏ T w o (2) mounting br ac kets and f our (4) scr e ws for rack-

or wall-mounting

❏ Four (4) self-adhesive feet for desk-mounting
❏ AMS Link Extender cables for PC and Macintosh
❏ This installation guide
❏ The Asanté Introduction to Networking Manual
❏ Warranty card

Page 1-14

Please mail in the warranty card today. This guarantees that you
will receive notification of any future software or hardware
releases.

Installing the AsantéBridge 1012

Positioning the AsantéBridge 1012

The AsantéBridge can be positioned on any flat surface (a desktop,
table, or other work surface), or it can be mounted on a wall or in
a rack. There are a few guidelines that should be followed:

❏ Place the unit within six feet of an AC outlet.
❏ The unit must be no more than 100 meters (328 feet)

away from the network devices to be connected via
RJ45 cables.

❏ Leave a two-inch clearance around the ventilation grills.

Normal office temperature and humidity generally suit
this type of equipment. For details, see Appendix B,
“Technical Specifications.”

❏ The location should not be near sources of electrical

interference, such as motors or heavy-current switches.

Air flow

2 in.


ASANTE

Power Cord

Maximum 6 ft


Air flow

STATUS STANDBYACTIVE

UTILIZATION

1 3 5 10 20 30 50 65+ UPLINK

Late Collision
Misaligned CRC
Runts/Fragments
Short Event/Missing SFD

%

13510+

%

COLLISION

PWR CPU

RESET

NMP MSG

2 3 4 5 6 7 8 9 10 11 12

1

SNMP

LINK/RECEIVE

PARTITION

RCV FWD COL

BRIDGE

50

1

234 5678 910 11 12

50

10BASE-T PORTS

RCV FWD COL

50

Asante´Hub 1012

BRIDGE

2 in.


No Electrical Interference


Device Connection

Maximum 100 meters
(328 ft.)


Figure 1-8 Locating the AsantéBridge

Page 1-15

Chapter 1 — Quick Start

Placing the Bridge on a Desktop

Peel the protective strips from the self-adhesive feet and

1

apply the feet in the four corners of the base of the unit.

Place the unit on a flat, stable surface.

2

Wall or rack mounting the Bridge

1

Mark the desired location on the wall or rack (see Appen­dix B, “Technical Specifications” for unit physical dimen­sions).

ASANTE

2

vided, or wall using screws that are appropriate for the
type of wall on which you are mounting the AsantéBridge.

Place the unit on the brackets (get an assistant to hold it in

Fasten the brackets to the rack, using the hardware pro-

3

place if necessary), and fasten the hub to the brackets,
using the screws provided.

Wall- and rack-mounting positions are illustrated in the figure
below.

STATUS STANDBY ACTIVE

UTILIZATION

PWR CPU

RESET

NMP MSG

Late Collision
Misaligned CRC
Runts/Fragments
Short Event/Missing SFD

%

13510+

%

COLLISION

SNMP

1 3 5 10 20 30 50 65+ UPLINK

PARTITION

2 3 4 5 6 7 8 9 10 11 12

1

LINK/RECEIVE

RCV FWD COL

BRIDGE

50

1

234 5678 910 11 12

50

10BASE-T PORTS

RCV FWD COL

50

Asante´Hub 1012

BRIDGE

Page 1-16

Figure 1-9 Rack-mounting the AsantéBridge

❖

Note: To wall mount, rotate the mounting brackets 90°
and use the appropriate screws to fasten to the wall.

❖

Installing the AsantéBridge 1012

Turning on and Pretesting the Bridge

If you are installing more than one unit, you may want to repeat
this procedure for each one bef or e making an y device or networ k
connections.

Turning on the Bridge

1

Attach the power cord to the soc ket on the rear panel, and
connect it to an AC outlet.

2

Turn on the power switch at the right rear panel.

Evaluating the self-test pattern

1

2

3

When you power up the AsantéBridge, it runs through a
hardware and software self-test. All LEDs light and turn off,
in groups of two or four, from right to left. This process
takes about two seconds.

If the unit does not pass the self-test, the LED displays stop
at the detected error condition/test sector.

If this occurs, reset the hub by depressing the recessed
reset button using any pen-like instrument. If the self-test
fails again, the unit has a hardware malfunction. In this
case, note which LEDs are lit during the pause, and call
Asanté T echnical Support.

After the self-test is passed, the LEDs assume normal status.
For a stand-alone hub, the PWR LED (green) is on and the
SNMP and CPU LED is blinking. See “AsantéBridge 1012
Front Panel” on page 1-6 for the location of these LEDs.

Pretesting the Link Connection

1

Connect an RJ-45 extension cable between front panel
port #1 and the Ethernet interface port on a device config­ured with Ethernet hardware and software. You can see the
front panel LEDs respond to the connection.

LINK/RECEIVE LED corresponding to port #1 turns

The
on. If the device is sending unacceptable packets, the Parti­tion LED for that port may also blink, indicating that the
hub has autopartitioned the port. The PWR and SNMP and
CPU LEDs remain on and blink.

Page 1-17

Chapter 1 — Quick Start

2

Connecting Two Segments to the AsantéBridge

If the LINK/RECEIVE LED does not come on, use a narrow
tool to reset the hub. (The Reset button is on the front
panel.) The AsantéBridge reruns all diagnostics, and you
should see the self-test LED display described in the previ­ous step.

If the test continues to fail, you may have a problem with
the device connected to the AsantéBridge, the cabling
between the unit and the device, or possibly with the
AsantéBridge itself.

The AsantéBridge 1012 has two ports: an external port and the
hub port. As described earlier, the hub portion of the device is
actually the hub port. In this procedure, you connect one seg­ment to the external port, and the other segment to the hub port.

❖ Important: Separating your network into two separate

segments causes an interruption in network service. Do
not do this without notifying your network administra­tor and warning network users that the network is going
down for a few minutes. We recommend that you sched­ule this activity for a time when network activity is at a
low level.

❖

Dividing the Network into Segments

As described earlier in this chapter (see page 1-13), you should
have already chosen the point in your backbone where you want
to separate the network into segments.

1
2

If you have not already done so, open the backbone at the
point where you want to bridge and prepare the Ethernet
cabling with male BNC connectors on each end.

Connect one cable to a MA U with an AUI connector on the
other end.

Page 1-18