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A s a n t é H u b 1 0 1 2
I n s t a l l a t i o n G u i d e
Information in this document is subject to change without notice and does not represent a commitment on the part of Asanté Technologies, Inc. The software described in this document is furnished under a license agreement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement. It is against the law to copy the software on any medium except as specifically allowed in the license or nondisclosure agreement. The purchaser may make one copy of the software for backup purposes. 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 Asanté 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.
T r a d e m a r k s
Asanté Technologies, MacCon+, AsantéHub 1012, AsantéView, and 10T MAU are trademarks of Asanté Technologies, Inc.
Apple, AppleTalk, EtherTalk, TokenTalk, AppleShare, and Macintosh are registered trademarks of Apple Computer, Inc.
Ethernet is a registered trademark of the Xerox Corporation, Inc.
UNIX is a registered trademark of AT&T.
F C C I n f o r m a t i o n
This equipment is classified as a Class A computing device. Class A devices may be used only in commercial, business, or industrial environments.
This equipment generates, uses, and can radiate radio frequency energy. If this equipment is not insulated properly in strict accordance with the instructions in this manual, then it may cause interference in its electronic environment. This equipment has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against radio frequency interference when operated in a commercial environment.
Operation of this equipment in a residential area is likely to cause interference, in which case the user, at his own risk and expense, will be required to correct the interference.
M a n u a l R e o r d e r # 0 6 - 0 0 0 0 7 - 0 0
Table of Contents
About This Manual vii
Other Manuals in This Product Family viii
Compatibility viii
Other Asanté 10BaseT Networking Products viii
Technical Support ix
SNMP Option Users ix
Product Overview xi
Features xii
AsantéView xiii
Chapter 1. 1-1
Quick View 1-1
Front Panel - Quick View of Your Network 1-1
AsantéHub 1012 front panel 1-2
Reset Button 1-3
Interpreting LEDs 1-3
Rear Panel - Convenience in Connections 1-6
Use of the 3-In-1 Uplink 1-8
Hub ID 1-8
Default Settings 1-8
Installation 1-11
Checklist for Installation 1-11
If You Are Connecting AsantéHub to Earlier Products 1-12
Tools 1-12
Overview 1-12
Step 1. Unpacking the AsantéHub 1-14
Step 2. Locating the Hub 1-14
Step 3. Power-Up and Pre-Test 1-16
Power Up 1-16
Step 4. Pre-Test Host Connections 1-18
Step 5. Completing the Device Connections 1-19
What You Need 1-20
How to Do It 1-20
Step 6. Connecting the Network Management Station 1-22
What You Need 1-23
Interpreting Switch Settings 1-23
How to Do It 1-24 i
ii
What Next? 1-26
Step 7. Making Network Connections 1-26
Network Connections to Thin Ethernet 1-27
Step 8. Connections for AsantéView Management System (AMS) Link With
Multiple Hubs (Out-of-Band Network Management) 1-31
What You Need 1-31
How to Do It 1-32
The Next Step 1-34
Chapter 2. 2-1
Interpreting LEDs 2-1
Connectors and their Usage 2-5
Switches 2-7
Cabling Configurations 2-8
Interconnecting Hubs via the RJ-45 Port 2-8
Interconnecting Hubs via the BNC Port 2-10
Interconnecting Hubs via the AUI Port 2-11
Cabling for Redundant Links 2-13
Cabling a Local Terminal/Emulator to the Hub 2-14
Cabling the NMS (Network Management station), or a Modem, to the
Hub (out-of-Band) 2-14
Cabling the Network Management Station (NMS) to the Hub (In-
Band) 2-16
Cabling the AMS Link (Out-of-Band Network Management
Link) 2-17
Cabling Hubs for In-Band Network Management 2-17
Chapter 3. 3-1
About 10BaseT 3-1
How 10BaseT Uses Existing Telephone Wiring 3-2
Pre-Installation 3-2
Assign a Network Manager 3-2
Determine Application Needs 3-3
Consider Future Expansion 3-3
Determine Whether You Can Use Existing Wiring 3-3
Create a Network Map 3-4
Create a Network Log 3-4
Common Network Configurations 3-6
Single-Hub Star Network 3-6
Tree Network 3-6
Backbone Network 3-7
10BaseT Network Specifications 3-9
Standards for Network Wiring 3-11
Can You Use Existing Wiring? 3-12
Site Requirements for Wiring 3-12
Site Requirements for Hubs 3-12
Constructing RJ-45 Extension Cables 3-13
Chapter 4. 4-1
Interpreting the LEDs 4-1
Start-up Display 4-1
Normal Operational Display 4-1
General Guidelines 4-3
Wiring Problems and Solutions 4-3
Workstation Problems and Solutions 4-4
Hub Problems and Solutions 4-5
Traffic Patterns 4-5
Network Troubleshooting Software 4-6
Interpreting Events in the Hub 4-6
Collision 4-6
Appendix A. A-1
Appendix B. B-1
Appendix C. C-1
RJ-45 to RJ-21 Pinouts (Amphenol to Modular Jack) C-1
RJ-45 Modular Jack to Wall Jack Pinouts C-2
RJ-45 to RJ-45 Extension Cables C-3
Front-Panel Modular Jack to RJ-45 Pinouts C-3
RJ-45 to RJ-45 Crossover Cable C-4
AUI (DB-15) Pinouts C-4
DB-9 Pinouts C-5
Glossary G-1
Index I-1 iii
Figures
Figure 1-1.
Front Panel 1-1
Figure 1-2.
Front Panel Features 1-2
Figure 1-3.
Rear Panel
Figure 1-4.
AsantéHub Rear Panel (left) - TELCO and Network Connections 1-6
Figure 1-5.
AsantéHub Rear Panel (right) - TELCO and Network Connections 1-7
Figure 1-6.
The Installation Process 1-13
Figure 1-7.
Locating the Hub 1-15
Figure 1-8.
Wall- and rack-mounting the Hub 1-16
Figure 1-9.
LEDs After Self-Test (standalone hub) 1-17
Figure 1-10.
LEDs Showing Host Connection (standalone hub) 1-18
Figure 1-11.
Single-hub network 1-19
Figure 1-12.
Single-Hub Host Connections Using RJ-45 Extension
Cables 1-20
Figure 1-13.
3th Port Connection at Rear Panel 1-21
Figure 1-14.
Single-hub network with AsantéView 1-22
Figure 1-15.
Switch Settings Key 1-23
Figure 1-16.
DIP Switch Legend 1-24
Figure 1-17.
Out-of-Band AMS (AsantéView Management System ) Link Connections to
PC and Hub 1-25
Figure 1-18.
Out-of-Band AMS (AsantéView Management System) Link Connections to
Macintosh and Hub 1-26
Figure 1-19.
Backbone network with AsantéView 1-27
Figure 1-20.
Network Connections - Thin Ethernet Backbone 1-28
Figure 1-21.
Connecting a Hub to an Existing Ethernet Backbone 1-29
Figure 1-22.
Backbone network with AMS Link and AsantéView 1-31
Figure 1-23.
Wiring for Network Management Out-of-Band
(NMS on RS-232 Port) 1-32
Figure 1-24.
Wiring for Network Management Out-of-Band
(NMS on AMS Link Port) 1-33
Figure 2-1.
AsantéHub Front Panel LEDs During Normal Operation 2-2
Figure 2-2.
AsantéHub Front and Rear Panels 2-5
Figure 2-3.
Interconnecting Hubs via RJ-45 Ports 2-9
Figure 2-4.
Interconnecting Hubs on Thin Ethernet Backbone 2-10
Figure 2-5.
Interconnecting Hubs using FOIRL
(Fiber Optic Inter-Repeater Link) 2-11
Figure 2-6.
Interconnecting Hubs on Thick Ethernet Backbone 2-12
Figure 2-7.
Cabling for Redundant Network Links 2-13
Figure 2-8.
Local Terminal Connection to Hub 2-14
Figure 2-9.
NMS (PC OOB) Connections to a stand-alone Hub 2-15
Figure 2-10.
NMS (Macintosh OOB) Connections to a stand-alone Hub 2-16
Figure 2-11.
Network Management Station Connections to Hub iv
(In-Band) 2-16
Figure 2-12.
Cabling the AMS Link 2-17
Figure. 3-1 Sample network map 3-4
Figure 3-2.
Star Network 3-6
Figure 3-3.
Tree Network 3-7
Figure 3-4.
Thin Ethernet Backbone Network 3-8
Figure 3-5.
Thick Ethernet Backbone Network 3-9
Figure C-1.
RJ-45 to RJ-21 Pinouts C-1
Figure C-2.
Single Device Link - Amphenol Connector to 8-Pin
Modular Jack C-2
Figure C-3.
RJ-45 Wall Jack to Modular Jack Pinouts C-2
Figure C-4.
RJ-45 to RJ-45 Pinouts C-3
Figure C-5.
Hub to Modular Jack Pinouts C-3
Figure C-6.
Crossover RJ-45 Cable C-4
Tables
Table 1-1.
Interpreting Hub-Level Status Indicators 1-4
Table 1-2.
Interpreting Port-Level Status Indicators 1-5
Table 1-3.
AsantéHub 1012 Factory Default Settings 1-9
Table 2-1.
LED Status Indications 2-3
Table 2-2.
AsantéHub Connectors 2-6
Table 2-3.
AsantéHub Switches and Switch Settings 2-7
Table 3-1.
IEEE 802.3 Network Specifications 3-10
Table 4-1.
AsantéHub LEDs - Normal Status 4-2 v
About This Manual
This manual describes the AsantéHub 1012 intelligent Ethernet hub and shows you how to create a 10BaseT local area network (LAN) using the hub. Use the following list to look up specific subjects.
Overview of your AsantéHub
1012 and Quick Start
Installation Procedures
See Chapter 1, "Quick Start." The first few pages provide a quick, visual overview of hub physical features
The rest of the chapter describes installation of a one-hub departmental network, with optional connection to a thin Ethernet backbone.
AsantéHub's physical features
Network planning
Troubleshooting
Using pre-10Base-T equipment
Technical specifications
Cable specifications
Terminology used in this manual
See Chapter 2, "Hardware Description." It describes the hub's capabilities and gives details of the front and rear panel features. It also lists special network configurations for more complex networks.
See Chapter 3, "Network Planning" which covers topics in network planning such as topological considerations and detailed site requirements.
See Chapter 4, "Troubleshooting."
It describes common network problems and provides solutions. Information about the
LEDs is also included.
See Appendix A, "Support for
Pre-10BaseT Devices."
See Appendix B, "Technical
Specifications."
See Appendix C, "Pinouts and Cable
Specifications."
See the "Glossary." vi
Other Manuals in This Product Family
If you purchased the Simple Network Management Protocol (SNMP) option, you need to perform some software configuration before you can communicate with the hub over a TCP/IP network; see the manual, AsantéView Users' Guide for
Windows, In-Band. SNMP card installation instructions are included in the option package.
To run the out-of-band version of AsantéView, see the manual, AsantéView
Users' Guide for Windows, Out-of-Band.
To run the Macintosh version of AsantéView, see the manuals,AsantéView
Users' Guide for Macintosh, Out-of-Band ( or AsantéView Users' Guide for
Macintosh, In-Band ).
Compatibility
The AsantéHub is compatible with all 10BaseT-compliant twisted-pair products, whether or not they are manufactured by Asanté. If you are using the AsantéHub with a pre-10BaseT product, you may disable Link Integrity on a port-by-port basis from AsantéView.
Other Asanté 10BaseT Networking Products
To connect network devices to the AsantéHub, you need a 10BaseT-compatible internal or external adapter for each machine. Asanté Technologies provides a complete line of network adapter products. All Asanté products support the latest
IEEE specifications.
vii
Technical Support
Asanté Technologies is committed to providing you with reliable products and excellent technical support. Please feel free to contact Asanté with any questions, concerns or suggestions. Call, write or FAX to us at:
Technical Support
Asanté Technologies, Inc.
821 Fox Lane
San Jose, CA 95131
(800) 432-7511
FAX: (408) 734-4864
AppleLink address: ASANTE.TECH
Internet Mail Address: [email protected]
Please have the following information when you contact us:
•
• Model #
PROM revision level
SNMP Option Users
If your network is connected to the Internet, please have the following information when you contact us:
1.
Gateway address:
2.
Class of network: A/B/C
3.
Domain name:
4.
IP Address:
5.
The name of the governmental sponsoring organization:
6.
Information about the POC (Point of Contact, or contact person at the sponsoring organization, as follows:
Name:
Title:
Mailing Address:
Phone Number:
Net Mailbox:
NIC Handle (if any): viii
7.
Information about the technical POC, as follows:
Name:
Title:
Mailing Address:
Phone Number:
Net Mailbox:
NIC Handle (if any):
8.
Mnemonic name for the network (to 12 characters):
9.
Network geographic location and responsible organization establishing the network:
10.
Network type: Research/Defense/Government-non-
Defense/Commercial
If you encounter any problems, call Asanté technical support at (800) 622-7464.
If it is determined that the equipment needs repair, you will receive a Returned
Merchandise Authorization (RMA) number for returning the equipment to Asanté.
!
Please do not return any equipment without an RMA number.
ix
x
Product Overview
The AsantéHub 1012™ is a compact, powerful LAN hub that lets you create high-speed Ethernet networks over ordinary, unshielded twisted-pair (UTP) telephone wire. AsantéView network management software lets you manage the
AsantéHub 1012 network remotely, with graphical software that is intuitively easy to use.
The AsantéHub 1012 offers complete flexibility in LAN wiring. Network devices can be connected by way of twelve front panel 10BaseT ports, or to a punchdown block using the rear panel Telco port. Hubs can be networked using the
3-In-1 Uplink with RJ45, BNC, and AUI ports. These ports support twisted-pair and thin Ethernet wiring , as well as thick or fiber optic connections with the appropriate transceiver. The 3-In-1 Uplink supports redundant physical links and link auto-sensing.
AMS (AsantéView Management System) Link (RJ-45) ports provide dedicated out-of-band network management daisy-chained connections to other hubs or to a network management station located at the end of the chain. An RS-232 serial port provides connection for a network management station, terminal, or modem
(for remote dial-up).
The AsantéHub 1012 offers comprehensive LED indicators for network status, including per-port link/receive status, automatic and manual partitioning, network utilization, and packet collision ratios. These indicators are reproduced in graphical form in AsantéView. There are also warning indicators to monitor troubleshooting for the AsantéHub.
In addition, the AsantéHub 1012 offers comprehensive, centralized LAN management through AsantéView network management software. AsantéView runs as an application on Macintosh computers or on PCs under Windows.
If you purchased the optional SNMP daughter board, AsantéView supports network management based on the Simple Network Management Protocol
(SNMP). With this option, AsantéView can be run as part of a centralized
SNMP-based network management console, and information can be passed to a third-party SNMP manager.
Features
AsantéHub 1012 offers outstanding technical features in a compact, modern design:
•
•
•
•
•
•
•
•
Twelve 10BaseT Ports — Up to twelve network devices can be connected to a single AsantéHub (thirteen, in a standalone configuration).
Auto-Sensing Network Ports — Auto-sensing network ports with AUI, BNC and RJ-45 connectors support thick, thin or
10BaseT wiring.
Redundant Link Support — The 3-In-1 Uplink can be configured for redundant network links, for quick reestablishment of network services in the event of a backbone failure.
110/220 Volt Auto-Switch Power Supply — Installation at foreign and domestic sites requires no special switch or jumper settings.
Dedicated Out-of-Band Network Management — AMS
(AsantéView Management System) Links can connect up to eight hubs and span up to 2000 feet. The network management station can be connected as a device on the
AMS Link, or directly to the RS-232 port on the hub. The RS-
232 port supports a local network management station, terminal for local hub configuration, or modem for remote dialup.
Fault-Isolated Network Management — Network management and communications are isolated in hardware, so that the status of the network management link does not affect normal network services.
In-Band Network Management — Optional plug-in SNMP daughter-board supports SNMP-based network management; completely software-configurable.
Flexible placement — The AsantéHub's compact, modern design allows it to be placed on a desktop, or in a telephone closet via wall mounts or rack mounts. Rack and wall mounting hardware is included with each hub.
xi
•
•
•
*
*
*
Detailed Front Panel Indicators — The LED indicators of the
AsantéHub indicate:
* Functionality of CPU and SNMP option
AsantéView message status
Out-of-band and in-band link functionality
*
Port partition status (automatic or operatorcommanded) for link and device ports
Port link status and receive activity for link and device ports
*
*
*
Presence of the following network errors: late collisions, misaligned packets/CRC errors, runt/fragmented packets, short event/missing SFDs
Hub bandwidth utilization
Collision ratio
Downloadable Hub Software Upgrades — Software upgrades can be downloaded from the network management station or a designated server.
Asanté Reliability and Performance — the quality, reliability and performance you have come to expect from the maker of the award-winning Asanté networking products.
AsantéView
AsantéView LAN management software provides a graphical interface that offers comprehensive network analysis and control. AsantéView:
•
•
•
•
Locates and identifies network devices automatically
Provides configuration status at the hub, port, and card levels
Displays hub status in a detailed graphical view of the front and rear panels, with an active LED display
Provides port-by-port control of transmission options such as port partitioning, link integrity testing, polarity correction, jabber control, noise threshold reduction, and primary uplink selection, all from a single window xii
• Monitors network performance and displays comprehensive statistics in three easy-to-read formats: tables, line graphs, and bar charts
• Automatically responds to threshold violations by generating traps, partitioning ports, and/or paging for assistance
Protects network security with bi-level password structure •
• Stores multiple map files for historical records or hierarchical divisions of network management responsibilities.
For more information about AsantéView, see the AsantéView manual for your version of AsantéView.
xiii
Chapter 1.
Quick Start
This section gives a quick visual overview of all the major features of the
AsantéHub .
It illustrates the front and rear panels of the AsantéHub and describes each feature in detail.
Quick View
The following is a brief overview of your hub.
•
•
• Front panel: Reset button, LEDs, and modular 10BaseT ports
Rear Panel: Telco 50-pin (RJ-21)10BaseT port, network ports, network management ports and switches, LEDs, and fan and power
AsantéHub Basics: Factory Default Settings, Using the
3-In-1 Uplink, the Reset function, and Hub ID
Front Panel - Quick View of Your Network
The status LEDs and the twelve modular 10BaseT ports of the AsantéHub
1012 are located on the front panel (Figure 1-1).
PWR CPU
ASANTE
RESET NMP MSG
UTILIZATION
%
1 3 5 10 20 30 50 65+ SNMP UPLINK
1 2 3
4
PARTITION
5 6 7
8
9 10 11 12
1 3 5 10+
%
COLLISION
LINK/RECEIVE
1 2 3
4
10BASE-T PORTS
5 6 7
8
9 10 11
12
AsantéHub 1012
Figure 1-1. Front Panel
The left side of the front panel contains the reset button and the LED status indicators, as illustrated on the following page.
1-1
Chapter 1
AsantéHub 1012 front panel
Figure 1 2 illustrates the Reset button and the status LEDs on the front panel .
CPU
BLINKING = CPU functions are normal.
PWR (power)
ON = power on.
OFF = power off, or reset button has been pressed.
UTILIZATION %
ON = this percentage of hub bandwidth is in use.
PARTITION
SNMP/Uplink/ Ports 1-12
Individual LEDs indicate partitioning
(automatic or operator-commanded) of the SNMP, 3-In-1, and 10Base-T ports.
ON = Operator-partitioned
BLINKING = Auto-partitioned
ASANTE
I I I I I I I I I I I
Hub MAC
Address
Identical to
Hub ID
RESET
Resets hub and network management functions.
RESET
SNMP
ON = SNMP option is installed.
A
A
PWR CPU A
UTILIZATION
%
1 2 3 4
PARTITION
1 3 5 10 20 3050 65+ AAAAA
1 3 5 10
SNMP UPLINK
NMP MSG A
L a te C o llis io n
M is a lig n e d /C R C e rro r
R u n t/F ra g m e n te d p a c k e ts
S h o rt e v e n t/m is s in g S F D
A
WARNING
%
COLLISION
LINK/RECEIVE
5 6 7 8
LINK/RECEIVE
ON = this warning has occurred: Late
Collision,
Misaligned/CRC error,
Runt/fragmented packets, or Short event/missing SFD.
SNMP/Uplink/1-12
9 10 11 12
Individual LEDs indicate link connection and traffic on the SNMP, 3-
In-1, and 10Base-T ports.
ON = Link pulse detected (or Link
Integrity Test is disabled); no traffic.
BLINKING = Traffic (receiving activities) present on link.
COLLISION %
ON = this percentage of packets per .25 or .5 seconds is experiencing collision.
MSG
ON = Status messages are waiting; use
AsantéView to read them.
Figure 1-2. Front Panel Features
1-2
Reset Button
The reset button is located at the far left of the front panel. It resets all CPU functions, including communication and network management. It does not interfere with traffic through the hub.
Interpreting LEDs
The LEDs on the front panel can be thought of as two separate groups:
• Hub-level status (from PWR to Utilization) at the left, and
• Port-level status (Partition and Link/Receive status) at the right.
The following tables illustrate LED status indications and what they mean.
Quick Start
1-3
Chapter 1
Table 1-1. Interpreting Hub-Level Status Indicators
Power/CPU Status
PWR CPU
AAA
AAA
AA
AA
*
Power Off, CPU Off
Power On, CPU Normal
AA
Power On, CPU Failure
Utilization %
LED KEY
ON
A
A
OFF
FLASHING
Utilization LED Interpretation
1 3 5 10 20 30 50 65+
+ 0-1%
+1-3%
+3-5%
+5-10%
+10-20%
+20-30%
+30-50%
+50-65%
+65%
AAAA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AAAA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AAAAAAAA
AA
AAAA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AAAA
AA
AA
AA
AA
AA
AA
AA
AA
AAAAAAAA
AA
AAAAAAAA
AA
AA
AA
AAAAAAAA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
LED KEY
ON
OFF
AA
AA
FLASHING
1-4
Quick Start
Warnings
Warning LED Interpretation
1,2
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
1
Wanings may apply to any port on the hub.
Late Collision
Misaligned/CRC Error
Runt/fragmented Packets
Short event/Missing SFD
Use AsanteView (Port Control for this hub) to isolate.
2
More than one warning type may be present.
LED KEY
ON
OFF
FLASHING
Table 1-2. Interpreting Port-Level Status Indicators
SNMP, Uplink, and
Ports 1-12
Partition &
Link/Receive
Status
Partition
Link/Receive n
N o p
Li ar titio esent nk pr
N o tra ffic
1 n ar titio esent esent
N o p
Li nk pr fic pr
Tr af ar titio k
N o p
N o lin n e.g., 2 2 2
AAAAA AAA
*
AAA
AAA
2 t oper
Por
Li nk pr at or
- par
2 esent tit ioned opar tit ioned t aut
Por
Li nk pr esent
2
AA
AA OFF
ON
AA
FLASHING
1
Link present = Physical link at Port or Link Test disabled
2
Partitioned links will never have traffic
Note: For further information about the front panel features, see Chapter 2,
"Hardware Description,” especially Table 2-1, “LED Status Indicators.”
1-5
Chapter 1
Rear Panel - Convenience in Connections
The rear panel of the AsantéHub is shown in Figure 1-3, below. It provides
TELCO device connections, 3-in-1 Uplink (network) connections, two LED status indicators for the uplink, an RS-232 port for PC or terminal connection, and the dedicated AMS link connectors, as well as the fan and power hardware.
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
1 2
EN
D
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Figure 1-3. Rear panel
Figure 1-4 illustrates the left side of the rear panel and describes its physical features.
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
Telco RJ-21 connector for connecting to a punch-down block.
Used in place of the front panel RJ-45 ports.
Note: The Telco connector and the RJ-
45 ports cannot be used simultaneously.
RJ-45 IN port
Can be used as thirteenth device port if the 3-In-1
Uplink is not used
3-In-1 Uplink:
RJ-45/BNC/AUI autoswitch port
Used for the network link (uplink) to other hubs or backbones.
Note: Keep BNC cable terminated when hub is connected to backbone.
Figure 1-4 AsantéHub Rear Panel (left) - TELCO and Network
Connections
!
The right side of the rear panel is described in Figure 1-5.
1-6
Quick Start
Partition and Traffic LEDs -
Duplicate the functions of the
Partition Uplink and
Link/Receive Uplink LEDs on the front panel (see previous section).
RS-232 connector - Connection for network management station or terminal. Can be used for a local terminal, PC, or modem for dial-up network management.
Note: Assure that the PC/Terminal switch is set correctly.
Through/End switch -
Terminates the AMS Link used in out-of-band network management. Set up for pass-through hubs; down to terminate end hubs.
Fan
Cools unit; should be on when power is on.
Power switch - Turns power to this unit on or off.
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
PARTITION
TRAFFIC
RS232
THROUGH
AMS LINK
UP=PC
DOWN=TERMINAL
1 2
END
Spare Fuse in Fuse Holder
AMS (AsantéView Management
System) Link connectors - Modular
RJ-45 IN/OUT jacks dedicated to out-ofband network management.
Note: Assure that termination is set correctly; see THROUGH/END switch above.
PC/terminal switch -
Switches between serial and parallel communications, for modem/PC or terminal connection to the RS-232 connector. Set up (off) for PC, down (on) for terminal.
Power socket - Socket for universal 120/250V power cord; autosensing circuitry for use with U.S and European power standards.
Figure 1-5 . AsantéHub Rear Panel (right)
Note: For further information about the rear panel features, see Chapter 2,
"Hardware Description,” especially Table 2-2, “Connectors,” and Table 2-3,
“Switches.”
Note: 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.
1-7
Chapter 1
Use of the 3-In-1 Uplink
The 3-In-1 Uplink includes the rear panel RJ-45 IN/OUT, BNC, and AUI ports at the rear of the hub. The default setting for primary link selection is autoselection (see “Factory Defaults,” in this chapter.) On auto-select, the hub uses the AUI, 10BaseT, and BNC ports, in that order, if more than one uplink connection exists. Auto-selection occurs on hub power-up and reset.
!
IMPORTANT: The rear panel RJ-45 IN port as well as the BNC and AUI ports, may be used as a thirteenth device port only if the 3-In-1
Uplink is not used (i.e. as in a standalone departmental network). Any other usage will disrupt the network.
Note: Also see “Cabling for Redundant Links," in this manual, and see information about the Port Control window for primary link selection through software, in the AsantéView manual for your version of AsantéView.
Hub ID (MAC Address)
Hub ID is a six-byte number identical to the hub's MAC (Medium Access
Control) address. It resides in the hub PROM. The format of the ID number is 00-00-94-xx-xx-xx.
If you are using Windows Out-of-Band software, the hub ID is automatically retrieved when a new hub is connected to the network. If you are using
Macintosh Out-of-Band, or the Macintosh or Windows versions of in-band network management, see the appropriate users' guides for information on configuration.
Default Settings
Factory default settings are listed below in Table 1-3 . The hub contains two jumpers that can be reset to change certain options (see settings 1 and 2 on the following page). You must also set two switches (see settings 4 and 5 on the following page). Complete instructions for switch settings are given in the section “Installation,” in this chapter.
1-8
Quick Start
Table 1-3. AsantéHub 1012 Factory Default Settings
Default
1.
2.
3.
4.
5.
6.
All ports have Link Integrity testing enabled. Jumper JP8 is set OUT to enable Link Integrity testing on the 3in-1 Uplink.
To Modify
If you are using AsantéHub with a pre-
10BaseT device, disable Link Integrity.
(You will not be able to obtain link integrity status from disabled ports.)
To disable Link Integrity testing over the
3-in-1 Uplink, set JP8 IN.
To disable Link Integrity testing over device links, use the Port Control window in AsantéView.
Primary link selection follows autoselection sequence (see “Use of the 3in-1 Uplink,” in this chapter). Jumper
JP7 is set OUT.
To force primary link selection to AUI, set jumper JP7 IN.
All front panel ports (RJ-45) are hardware-configured IN and cannot be modified.
To connect two hubs using front panel ports, use a crossover RJ-45 cable (see
Appendix C for pinouts).
The rear panel AMS Link ports are terminated (Through/End switch set
DOWN).
The rear panel PC/Terminal switch is set to Terminal (DOWN/ON).
To configure hub as a through device on the AMS Link (if both AMS Link ports are occupied), set the Through/End switch
UP. The “through” setting passes the signal to the next hub or to a PC connected to this hub on an AMS Link port.
To put the rear panel RS-232 port in PC mode, set the PC/Terminal switch to PC
(UP/OFF).
Reconfigure using Port Control window in AsantéView.
EEPROM configuration for LX903 transceiver:
Port Disable = Not enabled
LI = Link Test enabled
JAB = Jabber detection enabled
PRC = Polarity Correction enabled
TH = Reduced Threshold not enabled
1-9
Chapter 1
Table 1-3, cont. AsantéHub 1012 Factory Default Settings
7.
8.
Serial Port 0 (AMS Link): 9600 bps,
8 data bits, 1 stop bit, no parity
Serial Port 1 (RS-232 port): 9600 bps,
8 data bits, 1 stop bit, no parity.
(Communication rate between hub and PC or modem on RS-232 port.)*
9.
Node Age time: 60 seconds. (Storage period for hub statistics.)
10.
SYS contact: none
Cannot be modified.
For a PC, reconfigure in terminal menu
(see Out-of-Band Dial rate: 1200, 2400,
4800, 9600); view in AsantéView.
Configure in Node Summary window in
AsantéView.
Configure using terminal menu, System
Administration Information.
11.
SNMP Read Community String: public Configure using terminal menu, SNMP submenu, or AsantéView Set Hub
Parameters window.
12.
SNMP Write Community String: private Configure using terminal menu SNMP submenu, or AsantéView Set Hub
Parameters window.
13.
Modem Dial String: none Configure using terminal menu SNMP submenu, or AsantéView Set Hub
Parameters window.
*Communication with a terminal is fixed at 9600 bps.
1-10
Chapter 1
Step 6. Connecting the Network Management
Station (Out of Band)
Now, connect the network management station that runs AsantéView. The network management station is connected to a hub at the end of the AMS
Link. If you are installing a standlone hub, this step creates a departmental network with network management, as illustrated below.
!
Note: For in-band network management connections, please refer to Chapter 2. "Hardware Description."
1-22
Figure 1-14. Single-hub network with AsantéView
Quick Start
If you are installing a multiple-hub network, you will go on to connect the
AMS link and network connections. In this case, also note that the network management station must be connected to the hub at the end of the network path.
Note: For further information, see Chapter 2, “Hardware Description,” particularly Table 2-2, “Connectors and Their Usage;” or see Appendix C,
“Pinouts and Cable Specifications.”
What You Need
You need only the cable type appropriate for your network management station (see the following figures). All cables described in this manual are straight-through, except where otherwise noted.
Interpreting Switch Settings
The switch settings in the figures refer to two small white DIP switches besides the paired RJ-45 ports near the right-hand side of the rear panel.
Figure 1-16, below, illustrates DIP switches. Figure 1-17 illustrates the switch settings key. These DIP switches affect (1) termination of the AMS link, and
(2) connection of terminal or PC to the RS-232 port on the hub.
A double-headed arrow indicates that the switch setting does not affect this particular aspect of your configuration, but it may be affected by other connections. Consult the switch settings for each step in the cabling procedure.
AMS LINK,
THROUGH
(NOT
TERMINATED)
PC NETWORK
MANAGEMENT
OR MODEM
THROUGH
1 2
AMS LINK,
END
(TERMINATED)
END
TERMINAL
Figure 1-15. Switch Settings Key
!
Note: You should use the "Through" setting whenever you have both
AMS ports in use. The "End" setting should be used when one AMS link port or no AMS link port is used.
1-23
Chapter 1
Switch Settings Key
UP
DOWN
Not relevant to this connection
Figure 1-16. DIP Switch Legend
Note: Because the AsantéHub's rear panel switches are very small and close together, whenever switch settings are shown, the position of both switches is identified (or a greyed out box is shown to represent the fact that a given switch setting is not important for what is being discussed in this section).
How to Do It
The following figures show connections for PC or Macintosh network management stations, with the appropriate switch settings.
To connect the network management station:
1.
Set the switches on the rear panel of the hub, as shown in the figure that applies to your network management station.
2.
Make the cable connections, in any order.
1-24
Quick Start
3.
Power up the network management station.
RJ21 10 BASE-T PORTS IN or OUT BNC
3-IN-1
UPLINK
AU
I PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
RS232 RS232
ASANTE DB9 to DB9 SERIAL CABLE
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
To PC Comm Port
AA
AA
AA
DIP Switches
RJ21 10 BASE-T PORTS IN or OUT BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
RJ45
RS232 To PC Comm Port
LINK EXTENDER (PC)
Note: To cable a PC, use a straight-through cable. To cable a modem, use a null modem (crossover) cable.
Figure 1-17. Out-of-Band AMS (AsantéView Management System ) Link Connections to PC and
Hub
!
Note: Link extender cable and DB-9 serial cable is included with
AsantéView Out-of-Band, and In-Band, software respectively. If the serial port on your PC is a 25 pin connector you will need to purchase a 25 pin to 9 pin converter.
1-25
Chapter 1
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
AMS LINK
UP=PC
DO W N=TERM INAL
1 2
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
RJ45
DIN-8
To MAC
AMS LINK EXTENDER (MAC)
Figure 1-18.
Out-of-Band AMS (AsantéView Management System) Link Connections to
Macintosh and Hub
What Next?
If your network consists of a standalone AsantéHub and attached devices, congratulations! — you are finished installing your network.
If you are installing a multiple-hub network, you have two more steps to complete.
Step 7. Making Network Connections
If you are adding a second hub to the network, you need to make network connections between the hubs. There are three basic options for network connections:
•
•
•
BNC, which generally connects the AsantéHub to a thin
Ethernet backbone
AUI, which generally connects the AsantéHub to a thick
Ethernet backbone, or may connect through a transceiver to a fiber backbone.
Unshielded twisted-pair, which uses RJ-45 cables to create tree networks (also known as hierarchical star networks) or to cascade hubs.
1-26
This section describes network connections via the BNC port, to a thin
Ethernet backbone, as illustrated below. For other network configurations, see Chapter 2, “Hardware Description.”
Quick Start
Figure 1-19. Backbone network with AsantéView
Network Connections to Thin Ethernet
The most common network connection is the thin Ethernet backbone network. This configuration uses the BNC port on the rear panel. The
T-connector on the backbone cable is connected directly to the BNC port.
This connection is simple to make. See the following figure.
1-27
Chapter 1
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
1 2
Terminator
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485 THRO UG
H
1 2
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
1 2
Terminator
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Figure 1-20. Network Connections - Thin Ethernet Backbone
The following figure shows the connection of a new hub to an existing backbone. To minimize network disruption, follow the steps below.
!
Note: The terminator can be either on the end of the cable or on the Tconnector.
1-28
Quick Start
Hub #3
Hub #1 Hub #2
2. Attach terminated cable to
Hub #2.
1. Remove Terminator.
Terminator
3. Attach T-connector to Hub #3.
Figure 1-21. Connecting a Hub to an Existing Ethernet Backbone
1.
The AsantéHub should already be powered on and working normally. The PWR LED will be on and the CPU LED will be blinking each 2-3 seconds. If the SNMP option is installed, the
SNMP LED will also be on.
If host connections have been made and are in use, all other
LEDs may be active, since this AsantéHub is already operating as a network. For details, see Chapter 2, “Hardware
Description,” Table 2-1, “LED Status Indications,” and Figure
2–1, “LED Status Indications, Normal Operation.”
For a description of the hub pre-test LED display, see “Step 2,
Power-Up and Pre-Test.”
2.
First lay the new cable segment from the end of the current backbone to the new hub location, without making any connections.
3.
Terminate the new cable segment. If necessary, add a
T-connector for the new hub.
4.
Working quickly, remove the terminator at the end of the existing backbone, and replace it with the new (terminated) cable segment. The push (or pull)/twist connectors make it easy to remove and replace the physical connection within a few seconds.
CAUTION: Ensure that the T-connector on the BNC port does not touch the AUI connector. Make a firm connection to the
1-29
Chapter 1
BNC port and ensure that the weight of the cable will not twist the T-connector into contact with the AUI cable connector.
5.
When you connect the hub to the backbone, traffic over the hub should begin immediately (if the network is in use). You will see activity on the Link/Receive Uplink LED (this should be on, indicating the connection through the backbone). The same activity should be displayed on the Traffic LED on the rear panel.
Depending on network activity, you may also see activity on the Partition Uplink LED, Collision or Warning LEDs, Utilization
LEDs, and MSG LEDs. For details, see Chapter 2, “Hardware
Description,” Table 2-1, “LED Status Indications,” and Figure
2–1, “LED Status Indications, Normal Operation.”
1-30
Quick Start
Step 8. Connections for AsantéView
Management System (AMS) Link With Multiple
Hubs (Out-of-Band Network Management)
If you have more than one hub in your network, use this section to install the
AMS link. This dedicated link interconnects hubs for out-of-band network management in AsantéView. A backbone network with AMS Link and
AsantéView is shown below. The network management station runs
AsantéView as an application and does not have to be dedicated to managing the AsantéHub network.
e 1-22. Backbone network with AMS Link and AsantéView
What You Need
You need a straight-through RJ-45 extension cable for each AMS Link connection.
Figur
How to Do It
To install the AMS Link:
1-31
Chapter 1
1.
Connect a straight-through RJ-45 extension cable from a rear panel AMS Link port on the first hub to a rear panel AMS Link port on the second hub. See the figure below.
2.
Terminate the hub at each end of the daisy-chain by flipping rear panel Through/End DIP switch down (closed), unless you used the other AMS Link port to connect to the network management station.
!
The rule of thumb here is that if only one AMS Link port or none is occupied by a cable, you must switch to end.
DIP Switches
RJ21 10 BASE-T PORTS
IN or
OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
AMS
DO WN=TERMI NAL
THRO UG H
1 2
END
To NMS
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Figure 1-23. Wiring for Network Management Out-of-Band (NMS on RS-232 Port)
1-32
Quick Start
RJ21 10 BASE - T PORTS
IN or BNC
3 - IN - UPLINK
AUI
RS485
THROUGH
PARTITION
TRAFFIC
RS232
1 2
AMS LINK
UP=PC
DOWN=TERMINAL
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RJ21 10 BASE - T PORTS
IN or BNC
3 - IN - UPLINK
AUI
RS485
THROUGH
PARTITION
TRAFFIC
RS232
1 2
AMS LINK
UP=PC
DOWN=TERMINAL
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RJ21 10 BASE - T PORTS
IN or BNC
3 - IN - UPLINK
AUI
RS485
THROUGH
PARTITION
TRAFFIC
RS232
1 2
AMS LINK
UP=PC
DOWN=TERMINAL
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Figure 1-24. Wiring for Network Management Out-of-Band (NMS on AMS Link Port)
1-33
Chapter 1
The Next Step
Congratulations! — this completes your hardware installation. Now you can:
•
•
•
•
Go to Chapter 2 to view details of the front and rear panel features and learn more about AsantéHub hardware.
Go to Chapter 3 to learn more about network installation.
Go to Chapter 4 if you need troubleshooting information.
To configure and use AsantéView, see the AsantéView manual for your version of AsantéView .
1-34
Chapter 2.
Hardware Description
•
•
•
•
•
•
The AsantéHub™ is an easy to use and powerful LAN hub that lets you create high-speed Ethernet networks over ordinary, unshielded twisted-pair telephone wire. AsantéView network management software, when included, lets you manage the LAN from an easy-to-read graphical display. With the SNMP option, you can manage AsantéHub networks from a centralized SNMP-based management console.
Standard hardware features include:
• Compact design that fits on a desktop, or can be wall- or rackmounted
Twelve device ports
Dedicated out-of-band network management connections
Optional in-band network management using SNMP
Complete flexibility in LAN topology, using the 3-In-1 Uplink with 10BaseT, ThinNet and AUI connectors
Support for redundant network links
Comprehensive LED indicators for network status.
Interpreting LEDs
From right to left, LED indicators of the AsantéHub display status for:
•
•
•
•
• port-by-port link/receive status port-by-port partition status utilization percentage collision percentage power, CPU (OK), SNMP (OK/present) and MSG (present)
2-1
Chapter 2
• Warning lights for four major error conditions.
The figure below illustrates the front-panel LEDs during normal hub operation.
Note: The rear panel also features two LEDs marked PARTITION and TRAFFIC.
They duplicate the functions of the Partition Uplink and Link/Receive Uplink
LEDs, respectively. (The Partition Uplink and Link/Receive Uplink LEDs are described in the following table.)
ASANTE
I I I I I I I I I I I
RESET
A B E H
1
H
2
H
3
PWR
*
A
CPU
A
A
UTILIZATION
%
AA
Late Collision
PARTITION
9 10 11 12 1 3 5 10 20 30 50 65+
AA
%
S N M P U P L IN K
* *
1 2 3 4
A
5 6 7 8
AA *
* * * * * *
LINK/RECEIVE
A
Misaligned/CRC error
Runt/Fragmented packets
Short event/missing SFD
COLLISION
G
I
3
C D
F
I
1
I
2
Figure 2-1. AsantéHub Front Panel, LEDs During Normal Operation
Table 2-1, on the following pages, lists the LEDs (starting from the left side of the panel), and describes the meaning of each LED state.
2-2
Hardware Description
Key
A
B
C
D
E
F
G
LED
PWR (power)
CPU
SNMP
MSG
Utilization %
Bar graph display, eight LEDs
Collision %
Bar graph display, four LEDs
Warning:
1
Four separate LEDs:
• Late Collision
• Misaligned/CRC
• Runt/fragmented
packets
• Short event/missing
SFD
Table 2-1. LED Status Indications
State
Green
Off
Green, blinking
~1x/sec.
Off
Meaning
Power to this unit is on.
Power to this unit is off.
CPU is functioning normally.
Green
Off
Amber
Off
Green @1% to 20%
Amber @ 30-50%
Red, blinking @
65+%
Off
Amber
Off
Red, blinking
Reset process, power off, or CPU not working.
SNMP daughterboard is installed and
OK.
SNMP daughterboard is not installed or operating.
You have a message concerning hub hardware failure; use the terminal menu to view. LED does not automatically turn off if the reported status persists.
No messages are waiting.
Bar graph display indicates hub utilization at 1, 3, 5, 10, 20, 30, 50, or 65+ %, reported per .25 or .5 second. (Max. rate
10Mbps)
Utilization is below this percentage.
Bar display indicates range of 1, 3, 5 and
10%. This percentage of packets has experienced collision. This number is calculated as Collision/ (Collisions +
Good Frames)
Collision rate is below this percentage.
Indicated transmission problem occurring on a network link; use AsantéView to identify the link.
The cause of repeated errors should usually be isolated and identified by removing nodes in a systematic manner until no further errors are detected.
Off Indicated warning has not occurred.
2-3
Chapter 2
I
I
H
H
H
H
I
I
1
2
3
1
2
3
Link/Receive:
14 separate LEDs:
All LEDs:
SNMP2
Uplink
(and rear panel
TRAFFIC LED)
1-12
Off
Green, on
Green, blinking
Green, on
Green, blinking
Green, on
Power to unit is off.
No traffic over the SNMP link.
Or, Link Integrity test disabled.
Traffic over the SNMP link.
Or, Link Integrity test disabled.
No traffic over the uplink.
Or, Link Integrity disabled.
Traffic over the uplink.
Connected, no traffic.
Or, Link Integrity disabled.
Green, blinking Traffic over a front panel port. Speed of blinking increases with packets/sec.
Partition:
4 separate LEDs
SNMP2
Uplink
(and rear panel
PARTITION LED)
Amber, blinking
Off
Amber, blinking
Hub has autopartioned the SNMP link.
Collisions too high.
SNMP link not partitioned.
Hub has autopartioned the uplink.
Collisions too high.
1-12
Amber, on
Off
Amber, on
Amber, blinking
Operator has partitioned the uplink.
Uplink not partitioned.
AsantéView operator has partitioned this front panel port.
Hub has autopartioned this front panel port. Collisions too high.
Front panel port not partitioned.
Off
1 IEEE 802.3 definitions; see AsantéView manual for complete descriptions
2 If SNMP option is not installed, LED is always OFF.
2-4
Hardware Description
Connectors and their Usage
The AsantéHub provides connectors that support several options for networking, device connection, and network management. See the table below. Refer to the figure to locate the connectors and switches discussed in the table.
A
1
PWR CPU
ASANTE
RESET NMP MSG
UTILIZATION
%
1 3 5 10 20 30 50 65+ SNMPUPLINK
1 2 3 4
PARTITION
5 6 7 8 9 10 11 12
%
COLLISION LINK/RECEIVE
1 2 3 4
10BASE-T PORTS
5 6 7 8 9 10 11 12
C
1
C
2
C
3
G
1
G
2
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
1 2
B A
2
C D E G
Figure 2-2. AsantéHub Front and Rear Panels
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
F
2-5
Chapter 2
B
C
A
1
A
2
C
1
C
2
C
3
Table 2-2. AsantéHub Connectors
Connector
Front panel 10BaseT connectors
• AUI connector
Description
Twelve modular RJ-45 jacks for connections to network devices. Also support connections between hubs for optional inband SNMP-based network management.
Support straight-through RJ-45 cables, as defined in Appendix B.
Thirteenth device port
TELCO (RJ-21) connector Provides alternative connection to punchdown block for wiring closet installations.
Auto-switch
AUI/ThinNet/10BaseT port:
See the three physical port options below. 3in-1 port supports redundant links. Port priorities are software-selectable (see
Chapter 1, “Quick Start,” the sections,
“Default Settings,” and “Use of the 3-in-1
Uplink”; also see AsantéView manual for your version of AsantéView for more information ).
• 10BaseT connector
Rear panel RJ-45 IN, BNC and AUI ports can be used as device ports only in a standalone (single-hub departmental network) configuration. The 3-in-1 Uplink cannot be used as a backbone connection if one of these ports is used as a device connection.
RJ-45 IN/OUT jacks for twisted-pair connections to network. Only one jack may be used. If the 3-In-1 Uplink is not used, the
IN jack may be used as a thirteenth device port.
• BNC connector ThinNet connection to network. BNC connections must be properly terminated when in use.
15-pin D-shell connector for ThickNet connections to network.
2-6
Hardware Description
D
E
F
RS-232 (DB-9) connector
AMS Link
(AsantéView Management
System) Link
Power Connection
Supports terminal, PC or MAC, or modem for dial-up network management. Use straight-through RS-232 cable for terminal or
PC; use crossover (null modem) cable for modem connection. DB-9 to DB-25 converter will be required for connection to
DB-25 comm ports.
See PC/Terminal switch in Table 2-3.
Two RJ-45 connectors support daisychaining connection of multiple hubs, for outof-band network management.
See Through/End switch in Table 2-3.
Standard +5 volt power receptacle for connection to wall socket.
Switches
A
B
C
Table 2-3. AsantéHub Switches and Switch Settings
Switch
On/Off Switch
Through/End switch
(AMS Link Termination)
PC/Terminal switch
(packet/character transmission)
Description
Turns power to the unit on and off. (Power condition of a networked unit does not affect AMS Link Ports.) (i.e.: if an intermediate hub is powered off, all the other hubs can still communicate over the
AMS link.)
Terminates AMS Link connection (see AMS
Link, above). Up = through; down = end.
• If both AMS Link ports are occupied, set
the switch to Through.
• If only one AMS or none Link port is occupied, set the switch to End.
Determines transmission by character or packet for the device connected to the RS-
232 port on the rear panel. Up = open; down = closed.
• To use local PC-based network
management, or a modem, set the switch
to PC.
• To use a local terminal, set the switch
to Terminal.
2-7
Chapter 2
Cabling Configurations
This section describes cabling configurations for the most common AsantéHub applications.
•
• Hubs can be interconnected via the RJ-45, BNC, or AUI ports
(the 3-In-1 Uplink) on the rear panel. Redundant physical links can also be installed. See the following four sections.
The PC or MAC which runs AsantéView can be connected directly to the hub, or a modem can be connected, for remote network management.
• Network management connections between hubs can be accomplished for out-of-band or in-band network management.
Out-of-band network management connections are illustrated in this section; for in-band connections, see Appendix A,
“SNMP Configuration” in the AsantéView manual for your version of AsantéView.
See the following sections for details.
!
Note: All RJ-45 cabling information given in this manual assumes that you use straight-through cables, except where otherwise noted. For details on cable construction, see Appendix C, “Pinouts and Cable Specifications.”
Interconnecting Hubs via the RJ-45 Port
The rear panel RJ-45 ports are used to interconnect hubs using RJ-45 extension cables. There are two ways to interconnect two hubs using the RJ-45 ports. See
Figure 2-3.
The first method (daisy-chaining) needs to be used when any single hub is interconnected by RJ-45 wiring to more than one hub. Since the 3-In-1 Uplink can accept only one physical connection, the hubs are daisy-chained as follows:
•
•
Connect one end of the extension cable to the rear panel
RJ-45 OUT port of hub #1.
Connect the other RJ-45 jack to a front panel port on hub #2.
2-8
Hardware Description
• Connect the next extension cable being between the rear panel RJ-45 OUT port of hub #2, and a front panel port on hub
#3.
• Continue for additional hubs.
The second method can be used only if the network chain is ending (the daisy chain does not need to be continued). This method preserves a front panel port as an additional device connection. One end of the extension cable is connected to the RJ-45 OUT (3-In-1 Uplink) connection. (Do not use the AMS Link jacks to the right of the rear panel.) The other jack is connected to the rear panel RJ-45
IN (3-In-1 Uplink) port of the adjoining hub.
The network configuration must not exceed the maximum distance length or device count guidelines as given in the 802.3 10BaseT specifications. See Table
3-1, “IEEE 802.3 Network Specifications,” for guidelines. See Appendix C,
“Pinouts and Cable Specifications,” for details on cable construction.
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RJ-45 To Front Panel Port
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RJ-45 To Front Panel
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RJ21 10 BASE-T PORTS IN or
OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
Figure 2-3. Interconnecting Hubs via RJ-45 Ports
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
!
Note: You can never use more than one of the "3-in-1 Uplink" ports at one time. Even in redundant backbone configurations, only one link can be active at any given time.
2-9
Chapter 2
Interconnecting Hubs via the BNC Port
The BNC port is typically used to interconnect hubs on a thin Ethernet backbone.
The backbone cable must be properly terminated, and the network configuration must not exceed maximum distance length or device count guidelines as given in the 802.3 10Base2 specifications. See Table 3-1, “IEEE 802.3 Network
Specifications,” for guidelines. See Appendix C, “Pinouts and Cable
Specifications,” for details on cable construction.
To interconnect hubs on a thin Ethernet backbone:
• Connect the AsantéHub BNC connector to a T-connector on a properly terminated thin cable backbone, as shown in the following figure.
RJ21 10 BASE-T PORTS IN or OUT BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485 THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
Terminator
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485 THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
Figure 2-4. Interconnecting Hubs on Thin Ethernet Backbone
Terminator
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
!
Note: The Terminator may be used either at one end of a T-connector, or at the end of a cable.
2-10
Hardware Description
Interconnecting Hubs via the AUI Port
The AUI port is typically used to interconnect hubs using a thick Ethernet backbone, as illustrated in the figure below. It can also be used to interconnect hubs using a variety of media, such as fiber optic, unshielded twisted-pair, or broadband, depending on the external transceiver you connect to the port.
A common approach is using two TP-MAUs which may be connected by attaching the Transmit pair of one MAU to the Receive pair of another MAU. As you do this, the integrity of tip-to-tip and ring-to-ring polarity must be maintained.
Since the AUI port is 802.3 10Base5 compatible, you may use it according to those specifications, paying special attention to maximum distance, number of devices, and termination guidelines. See Table 3-1, “IEEE 802.3 Network
Specifications,” for guidelines. See Appendix C, “Pinouts and Cable
Specifications,” for details on cable construction.
!
Note: Make sure SQE (Signal Quality Error) is disabled on the MAU (Media Access Unit) when it is attached to the AUI
Port.
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
FIBER
FIBER
AUI FOIRL MAU
Figure 2-5. Interconnecting Hubs using FOIRL (Fiber Optic Inter-Repeater Link)
2-11
Chapter 2
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
1 2
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Drop Cable Transceivers
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
1 2
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485 THRO UG
H
AMS LINK
UP=PC
DO WN=TERMI NAL
EN
D
1 2
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Figure 2-6. Interconnecting Hubs on Thick Ethernet Backbone
2-12
Hardware Description
Cabling for Redundant Links
Redundant links may be easily installed. For example, twisted-pair wiring might be used as a backup to a thin Ethernet backbone, as illustrated below.
!
CAUTION: When using Thin and Thick Ethernet cabling, make sure that the T-connector on the BNC port does not touch the AUI connector. Make a firm connection to the BNC port and ensure that the weight of the cable does not twist the Tconnector into contact with the AUI connector.
The hub automatically senses the presence of physical links. Using its default setting, it automatically selects a link using the priority sequence: AUI, 10T, BNC.
The hub may also be set in hardware to use AUI only (see “Default Settings” in this manual). AsantéView’s Port Control window also configures redundant link settings; see the AsantéView manual for your version of AsantéView.
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
S pa re Fus e in Fus e Holde r
Terminator
RJ-45 To Front Panel Port
Thin Ethernet Backbone
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
RJ-45 To Rear Panel
RJ-45 In Port
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AU
I
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
Terminator
Figure 2-7. Cabling for Redundant Network Links
2-13
Chapter 2
Cabling a Local Terminal/Emulator to the Hub
To connect a local terminal (or PC running Windows’ terminal emulation) to the hub, use the rear panel RS-232 connector.
•
• Set the PC/Terminal switch to Terminal.
The setting of the Through/End switch for AMS Link termination is irrelevant to the terminal connection (though not to the AMS Link connection, if any).
DIP Switches
RJ21 10 BASE-T PORTS IN or OUT BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS23
2
RS48
5
THRO UG H
AMS
DO WN=TERMI NAL
1 2
END
2 A/ 2 5 0 V S low Blow Fus e
Re pla c e O nly Wit h Fus e of S a me Ra t ing
S pa re Fus e in Fus e Holde r
RS232 RS232 To Terminal
Figure 2-8. Local Terminal Connection to Hub
Cabling the Network Management station, or a Modem, to the Hub (out-of-Band)
To connect a PC network management station (or modem) to the hub for out-ofband network management, use the RS-232 port or either of the rear panel AMS
Link ports.
• If you use the AMS Link port, the Through/End switch must be set to "Through" if you have multiple hubs, since both AMS
Link ports will be occupied (the other port occupied by the
AMS Link to the next hub). The Through/End switch must be set to "End" if you are using only one Hub (or if you are not using the AMS Link at all). The PC/terminal switch setting is irrelevant. The network management station can be placed only at the end of the AMS Link daisy-chain.
2-14
Hardware Description
•
•
If you use the RS-232 port, the Through/End switch setting is irrelevant to the network management station (though not to the AMS Link). The PC/Terminal switch must be set to PC.
The network management station can be placed anywhere in the network.
For a modem, use a cross-over RS-232 cable, rather than the standard straight-through cable. Otherwise, the configuration is the same as for a PC. On the RS-232 port, port speed can be configured in AsantéView or the terminal menu system.
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
RJ45
RS232 To PC Comm Port
LINK EXTENDER (PC)
Note: To cable a PC, use a straight-through cable. To cable a modem, use a null modem (crossover) cable.
Figure 2-9. NMS (PC OOB) Connections to a stand-alone Hub
To connect a Macintosh network management station to the hub, use either of the rear panel AMS Link ports.
• The PC/Terminal switch setting is irrelevant, since the RS-232 port is not used.
• The Through/End switch must be set to "Through", if both AMS
Link ports will be occupied (the other port occupied by the
AMS link to the next hub), and to "End" if you have a standalone Hub.
DIP Switches
2-15
Chapter 2
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1
UPLINK
AU
I
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
RJ45
DIN-8
To MAC
AMS LINK EXTENDER (MAC)
Figure 2-10. NMS (Macintosh OOB) Connections to a stand-alone Hub
Cabling the Network Management Station (NMS) to the
Hub (In-Band)
To connect a network management station to the hub for in-band network management, use the connections shown in Figure 2-10, below. The network management station can be connected in any hub in the network. The DIP switch settings on the rear of the hub are irrelevant to in-band network management.
PWR CPU
ASANTE
RESET NMP MSG
UTILIZATION
%
1 3 5 10 20 30 50 65+ SNMP UPLINK
1 2 3 4
PARTITION
5 6 7 8 9 10 11 12
%
COLLISION LINK/RECEIVE
1 2 3 4
10BASE-T PORTS
5 6 7 8 9 10 11 12
AsantéHub 1012
RJ45 RJ45
To PC
Figure 2-11. Network Management Station Connections to Hub (In-Band)
2-16
Hardware Description
Cabling the AMS Link (Out-of-Band Network
Management Link)
To interconnect hubs for out-of-band network management, use the AMS
(AsantéView Management System) Link ports at the right rear of the hub. If only one of the jacks is used on a hub, the Through/End switch on the rear panel must be set to "End" to terminate the AMS Link connection.
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
DIP Switches
RJ21 10 BASE-T PORTS
IN or OUT
BNC
3-IN-1 UPLINK
AUI
PARTITION
TRAFFIC
RS232
RS485
THRO UG H
1 2
AMS LINK
UP=PC
DO W N=TERM INAL
END
2A/250V Slow Blow Fuse
Replace Only With Fuse of Same Rating
Spare Fuse in Fuse Holder
Figure 2-12. Cabling the AMS Link
Cabling Hubs for In-Band Network Management
Any hub interconnection (twisted-pair, BNC, or AUI, described in this chapter) serves as an in-band network management link.
For further information about the in-band network management option, see the AsantéView manual for your version of AsantéView.
2-17
Chapter 3.
Network Planning
This chapter discusses a range of topics that are important in network planning.
The topics are arranged approximately in the order they should be considered or performed. Even if the Quick Start meets your immediate needs, you can read this chapter to get an overview of the details involved in planning a network.
Every network offers unique constraints and requirements. If you plan to install a small network with a few devices in one room, you may find this chapter has all the information you need. If you plan to implement a large network with hundreds of devices, this chapter may serve only as a starting point. You may consider investing in a consultant to help you design your network.
This chapter discusses 10BaseT, introduces terms used in discussing network configurations, summarizes configuration guidelines for the 10Base media types supported by the AsantéHub 1012, and discusses wiring standards and site requirements for a 10BaseT network.
About 10BaseT
10BaseT is a communications standard for twisted-pair Ethernet, defined by the
Institute of Electrical and Electronic Engineers (IEEE). This standard (IEEE
802.3) defines how Ethernet components interact with each other on Local Area
Networks (LANs) constructed of unshielded twisted-pair telephone wire.
Twisted-pair wiring provides reliable communication between network devices located up to 100 meters (328 feet) from the communications hub.
10BaseT, the latest development in Ethernet communications, represents a tremendous leap in networking technology. 10BaseT is economical because it uses regular twisted-pair telephone wire. It is easy to install because it uses cabling similar to that used in a standard telephone system which is installed in most buildings.
Unlike thick and thin networks, in which devices are connected in a linear or
"bus" configuration, 10BaseT networks are arranged in a star configuration, in which network devices are connected at a central hub, like the spokes of a wheel. The star configuration is more reliable because each "spoke" operates independently of other network components. When multiple hubs are used, the network is called a tree, or hierarchical star, and has the same advantages.
3-1
Chapter 3
How 10BaseT Uses Existing Telephone Wiring
Buildings are usually wired for telephones in a star topology: wires run from one or more central locations, called wiring closets, to wall jacks in each office.
A small building may have only one wiring closet; large buildings often have multiple wiring closets which are interconnected. Multi-story buildings usually have at least one wiring closet on each floor. The wall jacks on a floor are connected to the wiring closet(s) on that floor. The wiring closets in a multi-story building are often connected in a hierarchy. For example, a ten story building might have a main wiring closet in the basement connected to ten satellite wiring closets (one on each floor).
With 10BaseT, this installed telephone wire can often be used for local area networks. This makes installation and maintenance simpler and less expensive.
Asanté has designed its products to take advantage of the existing star network you already have: your telephone system, with twisted-pair cable radiating out to every desk from a central wiring cabinet. You can use this cabling for your local area network. By taking advantage of available wire pairs in existing telephone wire, you avoid costs of cable installation. If you need additional cable, telephone wire is much less expensive than thin Ethernet cable or thick Ethernet cable:
Approximate cost Cable type
$0.10/foot
$0.55/foot
$3.00/foot
24-gauge twisted-pair cable thin Ethernet thick Ethernet
The advantages of star networks go well beyond economy. Telephone research and development have proven the superior reliability of star wiring plans and the ease with which they can be reconfigured. When a problem arises on one branch of a star, that branch can be shut down for repair without affecting other network users. By transferring wires in the central wiring closet, you can change or add to your star network as easily as you move or add a telephone line.
Pre-Installation
Assign a Network Manager
A network manager initially coordinates the design and installation of the network. Once the network is up and running, the network manager is responsible for adding new users to the network and troubleshooting problems.
3-2
Network Planning
For small installations, the network manager’s duties may only require a few hours a week. For larger installations, the network manager’s position may be a full-time job.
Determine Application Needs
Think about how people on the network plan to use it. Will they be printing, exchanging mail, or transferring files steadily, or occasionally throughout the day? Will some users regularly access a multi-user database, transfer large graphics or CAD files, or launch applications from a server?
LocalTalk usually meets the needs of a majority of your network users, but is inadequate for the network "power users" whose tasks require extensive data transfers. These users need the higher performance of Ethernet. Depending upon your users’ application needs, you might want to consider a hybrid network of LocalTalk and Ethernet.
Consider Future Expansion
As your network needs grow, your network should also grow. Hasty additions to your network make network maintenance difficult and time-consuming. Plan to install more cabling than you think you will need. With adequate preparation, adding another device to the network can often be as simple as plugging in another network connection.
Determine Whether You Can Use Existing Wiring
You may be able to use existing wiring with your installation. All UTP wire used between hub and hub, or hub and device, should conform to the IEEE Standard
802.3 Draft 10, Section 14.4, Media Specification. In general, this is ordinary, unshielded twisted-pair wiring of Type 2, or higher grades of type 3, 4 or 5. If you are unsure of the type of UTP wiring you have ask your building or property manager.
The physical limitations and regulations on the use of your building’s wiring can greatly affect your choice of network layouts. Evaluate your building and existing wiring, jacks, etc., to determine whether you can use existing wiring to set up the network, or whether new wiring will need to be installed. If you have no experience in this area, have the building manager or a telephone installer determine whether you can use existing wiring.
If you are installing the AsantéHub in a wiring closet, at a minimum you need to know the jack numbers (destinations) of the wire pairs in the closet. Consult a qualified network installer to perform this procedure.
3-3
Chapter 3
To evaluate sites, see "Site Requirements for Hubs" and "Site Requirements for
Wiring."
To evaluate existing wiring, see "Standards for Network Wiring" and "Tracing
Existing Wire Routes."
Create a Network Map
Consider creating a network map as a visual record of your network configuration. Create a network map by copying a floor plan diagram and adding graphics representing devices and cabling. Modify the map as you change your plans, and use the completed map as a guide during installation. It is a good idea to create the map on a computer so you can easily modify it.
Figure. 3-1. Sample network map
Create a Network Log
A network log is a record of information about the network. Consider creating and maintaining a network log to use as a reference when you are installing and managing the network. An up-to-date network log ensures that records of network equipment are always readily available. Having a complete written record of your network makes troubleshooting easier.
3-4
Network Planning
A simple network log may contain the following information for each device on the network:
•
•
•
• Name
Description
Device number
Hub port number
A more detailed log may contain:
•
•
•
• and more.
Serial number of each device
Network number
Location of the wire pair
Wall-jack number
3-5
Chapter 3
Common Network Configurations
Single-Hub Star Network
The simplest AsantéHub network consists of a single hub with attached devices
(nodes). This configuration yields thirteen device ports, using the rear panel RJ-
45 IN port in addition to the twelve front-panel device ports. Only twisted-pair wiring is used.
Figure 3-2. Star Network
Tree Network
A tree network, or hierarchy of multiple stars, is created when hubs are interconnected from the front panel ports of the central hub, to the rear panel RJ-
45 OUT port of each associated hub, using twisted-pair wiring.
Some advantages of a tree topology are:
• Cost savings; unshielded twisted-pair wire is less expensive than other wire types
•
•
Uniform wiring; Device and network connections are made using the same type of wire
Easy troubleshooting. Jabber error (continuous transmission) on a hub can be easily identified.
3-6
Network Planning
• Reliability compared to the backbone network; if there is an accidental break in the wire, only service on the affected branch will be interrupted .
Figure 3-3. Tree Network
Backbone Network
A backbone network suspends hubs from a linear length of cable, either thin or thick Ethernet cable.
In a thin backbone network, T-connectors integrated into the backbone cable are connected to the rear panel BNC ports of the AsantéHub. I n a thick backbone network, the AsantéHub is connected to a thick Ethernet backbone by way of the rear panel AUI port. Drop cables connected to external transceivers on the backbone cable, extend to each hub.
Some advantages of a backbone topology are:
• Longer distances between hubs; thick coaxial can span 500 meters and thin coaxial 185 meters, vs. 100 meter limit for unshielded twisted-pair
• Possible cost reductions since no central hub is required; compare costs of hub vs. costs of more expensive wiring
3-7
Chapter 3
•
•
•
Simple topology, because all of the hubs are connected in a single line (the linear, or bus, configuration)
Better noise immunity because coaxial cable (either thick or thin) is shielded, vs. unshielded twisted-pair
Physical strength; coaxial cable is stronger than unshielded twisted-pair.
Figure 3-4. Thin Ethernet Backbone Network
3-8
Network Planning
Figure 3-5. Thick Ethernet Backbone Network
10BaseT Network Specifications
This section provides an overview of the IEEE 802.3 specifications for 10BaseT network configurations using thick, thin, and twisted-pair wiring.
Thick, thin, and twisted-pair network requirements are based on the IEEE 802.3
(Ethernet) specification for local area networks. Different drafts in the 802.3
specification describe requirements for each media type.
Specifications for each media type are listed below.
3-9
Chapter 3
Table 3-1. IEEE 802.3 Network Specifications
Thick
(10Base2)
Thin
(10Base5)
Twisted-Pair
(10BaseT)
Media Thick coaxial cable
External devices required
Topology
Max.
Segment
Length
3
Max.
Devices per
Segment
Max.
devices per network
100
1024
NIC
2
and external transceiver
Bus
500 meters
(1625 feet)
Thin coaxial cable
NIC
Bus
185 meters
(605 feet)
30
1024
Unshielded twistedpair
1
NIC
Star, Tree
100 meters
(328 feet)
12
1024
1
Detailed requirements for unshielded twisted-pair wiring are described in the section, Wiring Requirements.
2
NIC (Network Interface Card) such as the Asanté MacCon3 NB for the
Macintosh II family or EtherPaC for the IBM PC and compatibles.
3
A twisted-pair link is equivalent to one segment.
Note: All 802.3 networks run at 10Mbps.
In addition to observing the requirements above, follow the "5-4-3 rule" to be sure that your configuration does not exceed the maximum data transmission path
(the longest path through any given network). The 5-4-3 rule describes the
10BaseT Draft 10 maximum path. Between any two devices on the network, you may have five segments in series, four repeater or concentrator sets, three populated segments (coaxial networks only). The maximum path includes the connections for the two devices. For backbone networks, consider these factors:
3-10
Network Planning
•
• If the AsantéHub is connected to an 802.3 backbone, and you have other workstations on your network backbone, remember to consider these workstations in your maximum data transmission path.
When interconnecting tree networks over a backbone (which uses the AUI or BNC ports) and staying within the maximum length and node count limits of the port type you use, it is possible to use all fourteen ports of the AsantéHub at the same time.
For fiber backbones, consider these factors:
•
• If a fiber-optic link is used, and the network path consists of five segments, fiber segments should not exceed 500 meters
(1640 feet).
If a fiber-optic link is used, and the network path consists of four segments and three repeater sets, fiber segments should not exceed 1000 meters (3280 feet) each.
Standards for Network Wiring
There are six criteria your twisted-pair link wiring must meet:
1.
It must be 24 AWG (0.5 mm, or 24-gauge), unshielded, solid conductor copper wiring. (You can identify this type of wiring by its alternating color bands: green/white, white/green, blue/white, white/blue, and so on.)
2.
The wire must be insulated. Insulated wire has guaranteed performance up to 40
°
C. In temperatures higher than 40
°
C there is more interference. Note that the insulation must be approved for use by your local building codes. For example, plenum-rated or Teflon-insulated cable may be required in some areas.
4.
You need a minimum of two twisted-pairs for each link. We recommend running four wire pairs to each workstation to allow for future expansion and fault tolerance.
5.
The maximum link length from hub to network device is 100 meters (328 feet). This distance includes the twisted-pair extension cable and all the wire in the wall, plus the cross connect cable and any punch-down and patch panel wire.
6.
The twisted-pair link must be a straight (point-to-point) run from the hub to the MAU. It must contain no taps or splices.
If the wire in your building does not meet these criteria, or if you need workstations where no wire exists, you need to install new wiring.
3-11
Chapter 3
Can You Use Existing Wiring?
You may be able to use existing wiring with your installation. All twisted-pair wire used between hub and hub, or hub and device, should conform to the IEEE
Standard 802.3 Draft 10, Section 14.4, Media Specification. In general, this is ordinary, unshielded twisted-pair wiring.
The physical limitations and regulations on the use of your building’s wiring can greatly affect your choice of network layouts. Evaluate your building and existing wiring, jacks, etc., to determine whether you can use existing wiring to set up the network, or whether new wiring will need to be installed. If you have no experience in this area, have the building manager or a telephone installer determine whether you can use existing wiring.
To evaluate sites, see "Site Requirements for Hubs" and "Site Requirements for
Wiring."
To evaluate existing wiring, see "Standards for Network Wiring" and "Tracing
Existing Wire Routes."
Site Requirements for Wiring
Wiring is affected by electrical interference in its immediate environment. Ensure that both existing and planned wiring:
• are not in close proximity to sources of electrical noise, such as radio transmitters and broadband amplifiers, motors and current switches.
•
• do not run close to fluorescent lighting fixtures do not run parallel to power lines for long distances.
Site Requirements for Hubs
Asanté Hubs must be placed within 100 meters (328 feet) of the network devices.
Plan for devices that may be installed in the future. If you are wiring a building which has multiple wiring closets, you may want to place hubs in both the main wiring closet and satellite wiring closets.
• The location should be readily accessible for installation and maintenance. There must be enough space to mount the
AsantéHub with a two-inch clearance around the ventilation grills.
•
•
The temperature and humidity requirements must fall within those specified in Appendix B, "Technical Specifications."
The hub must be placed near an AC outlet.
3-12
Network Planning
• The location should not be near sources of electrical interference, such as motors or heavy-current switches.
Constructing RJ-45 Extension Cables
To make extension cables, first measure the necessary lengths, remembering not to exceed a length of 100 meters. Then have the cables constructed according to the pinouts in Appendix C, ”Pinouts and Cable Specifications.”
3-13
Chapter 4.
Troubleshooting
The AsantéHub 1012 does not require any routine maintenance. There are no user serviceable parts in the AsantéHub.
If you cannot identify and correct a fault using the testing procedures described below, contact Technical Support. See “Technical Support” in this manual.
This chapter describes troubleshooting based on the hardware display. AsantéView also provides network diagnostic routines, graphical LED and link status displays, and real-time statistics on network performance. For information on these features, refer to the AsantéView Users' Guide.
Interpreting the LEDs
Hardware aids to testing and monitoring your network’s status include the LEDs on the AsantéHub, on the network interface card, and on the TP-MAU. In general, the
LEDs give information about the status of a particular unit or function. This section covers how to read the LEDs on the AsantéHub 1012.
Start-up Display
When you first turn on the AsantéHub, all the LEDs switch ON in sequence, while the hub goes through a series of internal diagnostics. The start-up (diagnostic) sequence and hardware failure indication were described in Chapter 1, “Quick Start.”
Normal Operational Display
After the diagnostics have been passed, LEDs resume normal operational status.
The table on the following page gives a brief description of each LED as it appears during normal operation. (Normal operation may include packet collisions or errors.)
Note: For detailed information on LEDs, see Table 2-1, “LED Status Indications.”
4 -1
Chapter 4
L E D
P W R
C P U
S N M P
M S G
UTILIZATION
C O L L I S I O N
WARNING
PARTITION
Table 4-1. AsantéHub LEDs - Normal Status
L I N K / R E C E I V E
Normal
Condition
Green, ON
Green, BLINKING
Green ON or OFF
Amber ON or OFF
Meaning
Green: Power is ON.
BLINKING: CPU is present and operating normally.
Green: SNMP daughter board is installed.
OFF: no SNMP board installed.
Amber: Status messages received; view messages through AsantéView.
OFF: No status messages received.
Indicates % of utilization of this hub's bandwidth.
Green/Amber/Red or OFF
Amber OFF
OFF
Amber OFF
Green
ON/BLINKING
Indicates % of collisions on this hub.
Red: Warnings present.
OFF: No warnings present.
Amber ON: or blinking indicates partitioning; port is down.
OFF indicates normal port operation.
ON: Link is present (or Link Integrity test is disabled).
1
BLINKING: traffic is passing over this port.
OFF: Link is not present.
Port status is not available if Link Integrity test is disabled.
1
To enable or disable the Link Integrity test, use AsantéView.
4 -2
Troubleshooting
General Guidelines
Factors affecting network performance include wiring problems, software or hardware problems on the device or network interface card, inclusion of pre-10BaseT devices on a 10BaseT network, and incorrect hub configuration.
Wiring Problems and Solutions
• Degraded network performance.
Check to see whether stranded wire has been used. Use only solid conductor wire.
• Unable to establish link on one or more connections (lengths over 15 ft.)
Check for electrical interference (EMI) from high-powered machinery near network links.
Ensure that such machinery is placed at a distance, or purchase cable with more EMI shielding. Building may need to be earthgrounded.
Make sure that physical connections are in place, tightly attached, and properly terminated. Use well-built cables with strong cable/connector joints and good EMI shielding. Place away from high-activity areas of the building, to avoid mechanical damage.
See Chapter 1, "Quick Start " for wiring for star and thin backbone networks. See
Chapter 3: "Network Planning," for other configurations.
Ensure that your network is within 802.3
specifications for segment lengths and the like. Table 3-1 lists specifications for all supported Ethernet media types.
See above
4 -3
Chapter 4
• Unable to establish link.
• No communication through AUI port.
Make sure that physical connections are in place, tightly attached, properly terminated, and connecting the appropriate devices. See
Chapter 1, "Quick Start " for wiring for star and thin backbone networks. See Chapter 3:
"Network Planning," for other configurations.
Check for loopback at a device connection or between hubs, if wiring has recently been changed.
Broken or improperly connected AUI cable.
Check connections, continuity, and impedance.
Workstation Problems and Solutions
• Certain devices cannot communicate over the network.
Check to see whether the device supports
Link Integrity testing (is pre-10BaseT). If so, disable Link Integrity test on the port to that device.
Check network interface card hardware configuration. Check port settings and Link
Integrity. Run card diagnostics. Most card manufacturers include some form of diagnostic software to ensure the card is functioning properly. Consult the documentation that comes with your network interface card.
Check network operating system and software to ensure compatibility and uncorrupted software. Reinstall or restart software.
Ensure that proper application software is running on the workstation to provide connection. Check software requirements.
For example, you must be running TCP/IP software when talking to a UNIX host system.
Check to see that interface software is properly configured. For example, you may be running different phases of Ethertalk on the same network.
4 -4
Troubleshooting
Hub Problems and Solutions
Note: Hub hardware failure is not likely, if it has passed its self-test at startup or reset
•
•
• After changing hub configuration, part of the network does not work.
Link Integrity is enabled on a port connected to a pre-10Base-T device.
• Other workstations connected to the hub are disrupting communication of workstations being brought up.
Fan has failed.
• Miscellaneous problems; you want to run hub diagnostics.
Restore hub to the initial factory settings (see
“Default Settings” in this manual. Make changes one at a time and check network performance after each change.
Disable Link Integrity on that port through
AsantéView (Port Control window) or a local terminal.
Remove the disrupting workstations, or disable (partition) their links through
AsantéView (Port Control window) or a local terminal.
The fan should be running while power is on.
Reset the hub. This does not affect traffic. Use a narrow tool (or paper clip) to push the reset button.
Traffic Patterns
• General network performance degradation or abnormal statistical indications.
An erratic network traffic pattern (high traffic, low traffic. Plan network usage so that bursts of traffic do not occur.
4 -5
Chapter 4
Network Troubleshooting Software
Below is a list of network troubleshooting applications that Asanté has found useful.
This list is for informational purposes only, as a service to our customers, and does not constitute an endorsement by Asanté Technologies, Inc. The list contains the product name, the manufacturer, the platform that the application runs on, and the application type (network analyzer or protocol analyzer).
Product
NetMinder
Ethernet
EtherPeek
Inter-Poll
Sniffer
WatchDog
Manufacturer
Neon Software
Platform
Mac II
Avante Garde
Apple Computer
Network General
Network General
Mac
Mac
DOS
DOS
Category
Protocol Analyzer
Protocol Analyzer
Network Analyzer
Network Analyzer
Network Analyzer
Interpreting Events in the Hub
•
•
•
Collision
After a collision on the hub, the hub momentarily autopartitions the offending port. If collisions are low, you may not be able to notice this instantaneous process.
However, if collisions are high, you will notice the following indications:
The Partition LED for that port, and for the uplink and/or SNMP link, blinks amber.
The port Link/Receive LED shows green ON, indicating a physical connection.
The Link/Receive LED for the uplink shows green on or blinking, depending on whether there is other traffic over the uplink during this period.
4 -6
Appendix A.
Support for Pre-10BaseT Devices
This appendix provides guidelines for integrating non-10BaseT compatible devices into your Asanté 10BaseT Local Area Network.
For a device that has an Ethernet card with an AUI port, simply obtain a TP-MAU
(Media Attachment Unit) such as the Asanté 10T MAU. A TP-MAU is an external device which allows you to connect a 10BaseT RJ-45 connector to your AUI (DB-
15) port.
For a device with an adapter card that supports an earlier version of 10BaseT, you should disable the Link Integrity test for the port connected to that device. First check with the vendor to make sure disabling the Link Integrity will make the card compatible with the AsantéHub 1012. Then follow these steps:
1.
Determine which port number the workstation is wired to on the
AsantéHub.
2.
From the AsantéView Port Control window, disable link integrity testing on that port. (For this procedure, see AsantéView manual for your version of AsantéView. )
•
•
You should be aware that:
AsantéView does not gather statistics from ports with Link Integrity disabled.
The Link/Receive LED for the disabled port(s) is always on (green).
!
Note: Link Integrity can be disabled for the uplink in hardware; see Chapter 1, “Quick Start.”
A -1
Appendix A
A -2
Appendix B.
Technical Specifications
This appendix describes the technical features of the AsantéHub 1012.
Standards Supported:
Data Rate:
IEEE 802.3 Ethernet specifications for thick
(10Base5), thin (10Base2), and unshielded twisted-pair (10BaseT) media.
10 Mbps
Maximum Cable Distances:
Ports:
10BaseT (UTP)
10Base2 (thin)
10Base5 (thick)
100m (328 ft.)
185m (605 ft.)
500m (1625 ft.)
13 Unshielded Twisted-Pair (UTP) device ports
1 Autoswitch 3-In-1 Uplink with three physical port options:
1 Attachment Unit Interface (AUI)
1 BNC Thin Ethernet
2 RJ-45
LEDs:
1
1
1
1
1
1
1
1
1
1
14 to indicate Link Integrity Status
14 to indicate Auto-partitioning Status
8 to show Hub Bandwidth Utilization
4 to show Collision Percentage to show Late Collision to show Alignment/CRC Errors to show Runt/Fragmented Packets to show Short Event/Missing SFD to show CPU Activity to show Message Waiting to show SNMP Option present to show Power on/off to show Uplink Partition status (rear panel) to show Uplink Link/Receive status (rear panel)
Power Requirements: Input Voltage:
Input Current:
100-240 VAC, 50-60 Hz single phase; continuous voltage input range
1.2A @ 100 VAC (max.)
0.5A @ 220 VAC (max.)
0.5A @ 100 VAC (typ.)
Electromagnetic Emissions: Meets FCC Class A requirements
Safety: Designed in accordance with UL 1950, CSA 22.2
No. 220, IEC 950, TUV and VDE requirements
B -1
Appendix B
Option Slot:
Mounting:
Physical Dimensions:
Weight:
Environmental:
Accepts SNMP module or future internetworking devices
Desktop, Rack (with bracket), or Wall (with bracket)
10”L (25.4 cm) x 2.2” H (5.9 cm) x 16”W (40.6 cm)
Approx. 6 lbs. (2.73 kg)
Operating Temperature: 0 ° to 40 ° C ambient
Operating Humidity: 5 to 85% noncondensing
Operating Altitude: 10,000 ft. (3,048m)
Storage Temperature: -30 to 80 C
Storage Humidity: 5 to 90% noncondensing
Storage Altitude: 25,000 ft. (7,620m)
See AsantéView manual for recommended technical specifications of the network management station.
B -2
Appendix C.
Pinouts and Cable Specifications
RJ-45 to RJ-21 Pinouts (Amphenol to Modular Jack)
The Amphenol modular 50-pin connector establishes connections to the 8-pin modular jack through the network (hub) and distribution (house) punch-down blocks as illustrated below. Wire jacket colors may vary.
RJ-45
Connector
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD - Port 10
Port 11
Port 12
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
No Connection
No Connection
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
2 TD -
3 RD +
6 RD -
1 TD +
66 Type
Block
50
RJ-21 Connector
(Amphenol)
1
26 White/Blue
Blue/White
White/Orange
Orange/White
White/Green
Green/White
White/Brown
Brown/White
White/Silver
Silver/White
Red/Blue
Blue/Red
Red/Orange
Orange/Red
Red/Green
Green/Red
Red/Brown
Brown/Red
Red/Silver
Silver/Red
Black/Blue
Blue/Black
Black/Orange
Orange/Black
Black/Green
Green/Black
Black/Brown
Brown/Black
Black/Silver
Silver/Black
Yellow/Blue
Blue/Yellow
Yellow/Orange
Orange/Yellow
Yellow/Green
Green/Yellow
Yellow/Brown
Brown/Yellow
Yellow/Silver
Silver/Yellow
Violet/Blue
Blue/Violet
Violet/Orange
Orange/Violet
Violet/Green
Green/Violet
Violet/Brown
Brown/Violet
Violet/Silver
Silver/Violet
50
25
Figure C-1. RJ-45 to RJ-21 Pinouts
C -1
Appendix C
25242322212019181716151413121110 9 8 7 6 5 4 3 2 1
50494847464544434241403938373635343332313029282726
50-pin cable connector
5
6
7
8
1
2
3
4
Hub punch-down block
House punch-down block
1 2 3 6
8-pin modular jack
Figure C-2. Single Device Link - Amphenol Connector to 8-Pin
Modular Jack
RJ-45 Modular Jack to Wall Jack Pinouts
These pin numbers are for an Asanté 10BaseT card or MAU positioned correctly with the notch on the 8-pin modular jack down. Pin 1 is the left-most pin, and Pin
8 is the right-most pin.
1
2
3
6
TD+
TD-
RD+
RD-
Data Transmit positive
Data Transmit negative
Data Receive positive
Data Receive negative
1
2
3
1 2 3 4 5 6 7 8
8
7
6
4 5
Figure C-3. RJ-45 Wall Jack to Modular Jack Pinouts
C -2
Pinouts & Cable Specifications
RJ-45 to RJ-45 Extension Cables
RJ-45 extension cables consist of two IS0 8877 8-pin modular jacks (RJ-45) on a
≤
100 meter length of 24-gauge, solid conductor, unshielded twisted-pair wiring.
These pinouts describe the straight-through RJ-45 extension cable used in all the RJ-45 ports on the hub. Note that the AMS Link ports use only pins 3 and 6.
However, to minimize cost and maximize consistency, use the pinouts below for all twisted-pair extension cabling used in the network.
Rx
Rx
Tx
Tx
1
2
3
6
1
2
3
6
Rx
Rx
Tx
Tx
1
2
3
1 2 3 4 5 6 7 8
4 5
8
7
6
1
2
3
1 2 3 4 5 6 7 8
4 5
8
7
6
Figure C-4. RJ-45 to RJ-45 Pinouts
Front-Panel Modular Jack to RJ-45 Pinouts
The cabling between 8-pin twisted-pair modular jacks and the hub must be straight-through, unshielded twisted-pair, 24 gauge, solid conductor unshielded twisted-pair wire.
This figure illustrates in more detail the individual twisted-pairs that make up the straight-through twisted-pair modular cable. Each pair of wires that make up the eight wires attaching to pins 1 through 8 must be an individual twisted-pair. Note that pins 1 and 2 are an individual twisted-pair, as are pins 3 and 6, 4 and 5, and 7 and 8. From the Hub to the 8-pin modular jack there must be an individual twisted-pair for each pair of wires.
3
6
1
2
3
6
1
2
Figure C-5. Hub to Modular Jack Pinouts
C -3
Appendix C
RJ-45 to RJ-45 Crossover Cable
This cable may be used to connect two 10BaseT compatible devices (e.g., hubs) or to connect hubs using two front-panel ports.
3
6
1
2
1
2
3
6
Figure C-6. Crossover RJ-45 Cable
Note: This manual assumes that straight-through cabling is used for all applications, except where specifically noted.
AUI (DB-15) Pinouts
P i n Circuit
08
02
09
01
06
13
14
Shell
12
04
07
15
03
10
11
05
CO S
CI+
CI-
CI-S
VC
VP
VS
PG
DO+
DO-
DO S
DI+
DI-
DI S
CO+
CO-
Signal Name
Data Out positive
Data Out negative
Data Out circuit Shield
Data In circuit positive
Data In circuit negative
Data In circuit Shield
Control Out positive (optional)
Control Out negative (optional)
Control Out Shield (optional)
Control In positive
Control In negative
Control In circuit Shield
Voltage Common
Voltage Plus
Voltage Shield
Protective Ground
C -4
Pinouts & Cable Specifications
DB-9 Pinouts
D B - 9
Pin #
7
8
5
6
3
4
1
2
9
Name
GND
DSR
RTS not used not used
DCD-
TXD
RXD
DTR-
Direction
Output (from AsantéHub 1012)
Output (from AsantéHub 1012)
Input (to AsantéHub 1012)
Input (to AsantéHub 1012)
--------
Output (from AsantéHub 1012)
Input (to AsantéHub 1012)
--------
--------
C -5
Glossary
1 0 B a s e T address
AUI
A M S
AsantéHub
A s a n t é N e t auto-sensing backbone bandwidth baseband
BNC connector bridge broadband
LAN media standard that defines 10Mbps baseband Ethernet over unshielded twisted pair wiring.
The unique identifier for a network device.
Attachment Unit Interface.
Asanté Management System.
A compact, powerful LAN hub that lets you create high-speed
Ethernet networks over ordinary, unshielded twisted-pair (UTP) telephone wire. The AsantéHub 1012 offers complete flexibility in
LAN wiring.
The family name for all of Asanté Technology, Inc.'s networking products. A registered trademark of Asanté Technology, Inc.
AsantéHub 1012 capability to sense physical links present on the
3-in-1 ports (hub uplinks).
The major interconnecting bus in a network. Provides interconnection among subnetworks.
A network topology in which devices are connected to a single linear length of wire. (See tree network.)
The capacity of a network to transmit information. The unit of measure used may be bps (bits per second), or baud. The higher the bandwidth, the greater the information-carrying capacity of the network, and the faster the same data can be transmitted from one device to another.
Data transmission at a single digital signaling rate over coaxial cable or twisted-pair wiring.
A type of connector used for thin coaxial cable connection.
A device that connects networks at the data link control level. The bridge implements the connection between two local area networks at the physical and data link layers (layers 1 and 2 of the OSI model).
The transmission of multiple analog signals at the same time over the same wires.
G -1
G l o s s a r y b/s or bps b u s
coaxial cable collision configuration
C S M A / C D data link layer
D B - 9
D B - 2 5 d e v i c e domain download down-port
Bits per second.
A network topology that uses a single, linear run of cable to connect all the devices in the network. Each device in the network is typically connected to the main ("backbone") cable by means of a drop cable.
A cable that has an insulated inner conductor and an outer grounded shield positioned around a common axis. Coaxial cable offers large bandwidth and the ability to support high data rates with high immunity to electrical interference and low incidence of errors.
The interference of two transmissions on the channel when they attempt to transmit at the same time.
The interconnection of hardware and software on a network. The way in which a network is laid out. The hardware or software settings used to make a device behave in particular ways.
Carrier Sense Multiple Access/Collision Detection. A process used to regulate network transmissions that has each station listen just prior to transmitting to assure no other station on the network is transmitting; then the message can be sent. If two stations start transmitting at the same time, the resulting data is illegible. The sender knows to transmit again after a small random interval when it fails to receive a positive acknowledgement of its message.
Layer 2 in the OSI model, providing the transfer of data between directly connected systems and detecting any error in the transfer.
A 9-pin serial connector with a D-shaped shell, used to implement a subset of the RS-232 interface.
A 25-pin serial connector with a D-shaped shell, used to implement the RS-232 interface.
A component connected to the network.
A group of related devices on the network.
The process of transferring software to the devices of a network from one device over the network system.
A connector provided to link a concentrator or host at a lower level.
G -2
G l o s s a r y
E t h e r n e t
Ethernet cable
EtherTalk
A network communications system developed and standardized by
DEC, Intel, and Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and coaxial cable. It defines a physical medium (the cable) and the recommended method of packet signaling (placing data on that cable type).
Devices are connected by coaxial cable (either thin or thick) or by twisted-pair wiring. Ethernet is primarily associated with the bus network topology using coaxial cable, but unshielded twisted-pair cabling is an increasingly common medium for Ethernet.
Informal name for a thin or thick coaxial cable used in an Ethernet network.
Apple Computer's data link product, which allows an AppleTalk network to use Ethernet cable.
fiber optic cable
F I O R L
Appletalk is a family of protocols developed by Apple Computer and implemented on the Macintosh and other computers and peripherals. It may run on shielded or unshielded twisted-pair
(LocalTalk and compatibles), thin and thick Ethernet, and other media.
Thin, transparent fibers of glass or plastic that transmit light.
Fiber optic inter-repeater link, a fiber optic cable implementation of the IEEE 802.3 standard.
gateway address h o s t h u b
IEEE 802.3
The address of a software or hardware product that allows access from one network to another.
The main computer in a system of computers or terminals. This computer often provides services to other devices on the network.
A central device from which many transmissions and communications to the network emanate.
Specification for the physical layer in a local area network that uses the Carrier Sense Multiple Access with Collision Detection
(CSMA/CD) access method. This specification has a bus configuration, and uses baseband and broadband transmission.
in-band signalling Signalling over a network.
International Standards A worldwide federation of national standards organizations.
Organization (ISO)
G -3
G l o s s a r y
IP address interrupt request
(IREQ or IRQ) k b
L E D
Internet Protocol address. Internet Protocol is a network layer protocol developed with the Transmission Control Protocol. The address is the unique identifier of a device connected to such a network using the TCP/IP protocol.
An interruption in microprocessor activity provided in order to communicate with hardware and software.
kilobyte(s).
Light emitting diode.
local area A local group of computers and devices in a relatively small
network (LAN) area, connected by cabling to a common transmission medium, allowing users to share resources and exchange files. A link that enables any device to interact with another on the network.
Devices on a network are commonly called nodes and are connected by cables.
loopback
MAC address
A method of testing where signals are returned by the receiver to the originator so that they can be compared to the original data.
Loopback on a working packet network can impair transmission.
A unique 48-bit binary number (usually represented as a twelve-digit hexadecimal number) encoded in a device's circuitry to identify it on a local area network.
M B
Mb/s or Mbps modem network
Megabyte(s).
Megabits per second.
From the terms modulator/demodulator. A device that converts between the digital signals used by computers and analog signals that can be transmitted over telephone lines.
A group of computers, terminals, and other devices together with hardware and software that enbable them to exchange data and share resources over short or long distances; in partifcular, an
AsantéNet local area network.
network management n o d e
A software system used to control all the functions of the devices on the network.
A device, such as a computer, server, switching point, bridge, or gateway, connected to a network at a single location
G -4
G l o s s a r y out-of-band packet partition partition uplink
Signalling between a network management station and a network management module over a telephone line rather than over the network.
A predefined unit of data that is moved from source to destination through a packet-switched network. The type of packet depends upon the protocol used.
Electronic isolation of an Ethernet device from network communications.
A front panel LED on the AsantéHub 1012; it reflects the partition status of the uplink to the hub.
physical layer port
Layer 1, the lowest layer in the OSI model; it provides the transparent transmission of bit streams, including relaying through different media.
An interface location on a computer or device that can send and receive data. A port acts as an input and/or output device.
P R O M
R J - 4 5
R S - 2 3 2
Programmable Read-only Memory. A type of memory that allows data to be written into the device with hardware called a PROM programmer.
punch-down block Device for wiring twisted-pair cables between communication devices and pre-existing links installed behind building walls.
R J - 1 1 A four-contact or six-contact modular plug commonly used in telephones.
An eight-contact modular plug used for data communications.
The Electronic Industries Association (EIA) standard for the 25-pin serial interface used to connect personal computers or terminals to communications equipment such as modems.
Simple Network
Management
Protocol
S N M P star network
SNMP. A set of rules for performing network management functions. A standard based data structure that allows open management capabilities for all hardware, regardless of vendor.
See Simple Network Management Protocol.
A network topology that uses a central computer surrounded by terminals. Messages are transmitted directly from the node to the central computer.
G -5
G l o s s a r y station terminal
emulation
A device, such as a personal computer, server, bridge, or gateway, connected to a network at a single location.
The process where a computer imitates a terminal by using software that conforms to a standard such as the ANSI.
thick Ethernet This type of Ethernet cable is approximately 1 cm in cable diameter and can connect stations over a distance of up to
1000 meters. Also known as 10Base5 cable.
thin Ethernet cable
Through/End
switch topology
This type of Ethernet cable is 5mm in diameter and can connect network stations over a distance of 300 meters.
Also known as 10Base2 cable.
Rear panel DIP switch on AsantéHub 1012; terminates
AMS Link (dedicated out-of-band network management) connection.
The physical layout of devices and links in a network. Types of topologies include star, ring, and bus.
transceivers tree network
A device that can both transmit and receive signals; from the terms transmitter/receiver. A transceiver connects a node to the network.
A network topology in which only one route exists between any two hubs, but where each hub may be connected to more than two other hubs. (See backbone network.)
twisted-pair cable A cable made of two insulated wires twisted together to reduce electrical interference; with or without a shield under the outer insulation. Twisted pair is also known as 10BaseT wiring. unshielded twisted A cable made of two insulated wires twisted together to pair reduce electrical interference; used commonly in telephone cord.
G -6
Index
10BaseT B-1
10BaseT, what is it? 3-1
3-in-1 Uplink, guidelines 1-8
5-4-3 rule 3-10
A
AC power source, for installation 1-14
AMS link installation 1-31, 32, 33 termination 1-32, 33
AMS link, termination 1-9
AUI port connections 2-11
AUI port, guidelines 1-8
B
BNC network connections 1-26
BNC port, guidelines 1-8
Broadband connections 2-11
C
Cable construction C-4
Cable Specifications C-1
Compatibility vii
Configuration modem dial string 1-10
PC or terminal 1-9
SNMP read community 1-10
SNMP write community 1-10
Configurations, network 3-6
Connectors 1-6
Connectors, SmartHub 2-5
Constructing a cable C-4
Contents of hub package 1-14
Cost of cabling C-2
Cross-over cabling, use of 2-8
D
Data transmission path, limits 3-10
Default setting modem dial string 1-10
SNMP read community 1-10
SNMP write community 1-10
SYS contact Configuration
SYS contact 1-10
Default settings
AMS link.i.Configuration
AMS link port configuration 1-10
RS-232 port Configuration
RS-232 port configuration 1-10
Default settings, AsantéHub 1-8
Dimensions B-2
DIP switches, rear panel 1-23
E
EEPROM configuration, default setting 1-9
Electrical interference, near hub 1-14
Ethernet network connections (thin) 1-26
Existing Wiring 3-12
F
Factory default settings 1-8
Features list, SmartHub xi
Fiber optic connections 2-11
Front panel 1-1
Front panel features 1-1
Front panel status indicators 1-2
G
Glossary G-1
H
Hardware description 2-1
Host connections
LED display 1-18
Host connections 1-18
Host connections to hub 1-20, 21
Hub ID 1-8
Humidity, for hub 1-14
I
ID, hub 1-8
I -1
I n d e x
Installation
AC power 1-14
AMS link connections 1-12 device connections 1-12 electrical interference 1-14 host connections 1-12, 18 host connections to hub 1-20, 21 hub location 1-14 humidity requirements 1-14 network connections (BNC) 1-12, 26
NMS (OOB) connections to hub 1-31,
32, 33
NMS connections 1-22
NMS connections to hub 1-25, 26 overview 1-11 overview of procedure 1-12 package contents 1-14 power up hub 1-16 pre-test hub 1-16 prerequisites 1-11 temperature requirements 1-14 terminate AMS link 1-32, 33 tools 1-12 unpacking 1-14 wiring closet 1-3
Installation 3-1
J
Jumpers 2-7
L
LEDs interpretation 2-1
LEDs 4-1
LEDs B-1
LEDs, overview xii
Limits, data transmission path 3-10
Link Integrity vii
Link integrity test, disabling and enabling 1-9
Link Integrity Testing disabling A-1
Link Selection auto-select priorities 1-8
Location requirements 1-14
M
MAC address 1-8
Modem dial string, default setting 1-10
N
Network configuration maximum data path 3-10
Network configurations 3-6
Network connections (BNC) 1-26
Network connections, rear panel 1-6, 7
NMS connections (OOB) to hub 1-31, 32, 33
NMS connection to hub 1-22
Network management station 1-11
NMS connections to hub 1-25, 26
Node age time, default 1-10
O
Operating environment B-2
Out-of-band network management connections 1-31, 32, 33
Overview of the SmartHub x
P
PC, set switch when using 1-9
Pinouts and Cable Specifications C-1
Pinouts C-1
Polarity, when using TP-MAUs 2-11
Ports B-1
Power source, for hub 1-14
Power up hub 1-16
Pre-test host connections 1-18
Pre-test hub
LED display 1-17
Pre-test hub 1-16
Q
Quick View section 1-1
I -2
R
Rear panel 1-6
Rear panel features 1-6
Rear panel, network connections 1-7
Redundant link selection, setting priorities 1-9
Reset button 1-3
RJ-45 rear panel ports, guidelines 1-8
S
Serial port 1 (RS-232), default settings 1-10
SFD (Start Frame Delimiter) 2
Site requirements 1-14
Site Requirements 3-12
SNMP read community, default setting 1-10
SNMP write community, default setting 1-10
SQE 2-11
Straight-through cabling, use of 2-8
Support for Pre-10BaseT A-1
Switches 1-6
Switches 2-7
SYS contact, default setting 1-10
T
Technical Specifications B-1
TELCO connector 1-6
Temperature, for hub 1-14
Terminal, set switch when using 1-9
Termination
AMS link 1-32, 33
The figure below illustrates the front-panel
LEDs during normal hub operation.Ds, overview 2-2
Tools 1-12
Troubleshooting 4-1
Twisted-pair x
U
Unpacking the hub 1-14
UTP x
I n d e x
I -3

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