RAD Data comm ASMI-450 Especificações descarregar pdf (Página 111)

Token Ring Desing Considerations

RADring

Installation & Operation Manual

6-8 Maximum Number of Stations per Ring and the TJA Module 3/11/98 12:26

•

Passive lobe – signal must cover the length of the lobe twice without

regeneration

•

Active lobe – signal must cover one lobe length before being regenerated

at the lobe.

back-up path

main path

(2)

RX TX

(1)

Figure 6-2 Worst Case Design Configuration with passive lobes and no repeaters

•

Only one active station

•

Located on the longest lobe (highest attenuation)

•

The shortest segment cable is broken

•

Signal has to travel almost twice the ring length.

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 132 133

Modular LAN Access HUB 1
Warranty 3
Safety Warnings 3
Regulatory Information 4
Declaration of Conformity 5
Contents 6
List of Figures 10
List of Tables 11
Chapter 1 12
Introduction 12
RADring Hub 13
Table 1-1 RADring Modules 14
Module Function Description 15
Radring I systems 16
Centralized 17
Management 17
1.2 System Configuration 19
Token Ring 20
Configurations 20
RADring II 21
FIBER-OPTIC 22
3ULPDU\ 5LQJ 23
6DWHOOLWH 5LQJ 23
5$'ULQJ 23
TO 50 USERS 24
TO 16 USERS 24
TO 10 USERS 24
5$'ULQJ 26
Configuration 30
Physical 31
Common Logic (CML Card) 31
Mangement Option (CML Card) 31
Environment 31
Chapter 2 32
Functional Description 32
Stand Alone 35
Multiple Rings 35
Multiple Hub 37
Sattelite 37
2.4 General Ethernet 40
EP-8T EPR-8T EP-8T CML/MN 42
EP-8T EP-8T 42
Remote Ethernet Configuration 44
RADring Token 46
Ring Modules 46
RADring Ethernet 47
TL-4 Four-port 48
Lobe Access 48
TL-2/ED - Two 52
Distance Lobe 52
Access Modules 52
TL-2/EDS TL-2/EDSU 53
TL-2/F Two-port 54
Fiber-optic Lobe 54
Access Module 54
TIO Ring-In/Ring 56
Out Module 56
$1' %<3$66 57
TCR Token-Ring 58
Copper Repeater 58
52 6,'( 60
5, 6,'( 60
TFR Fiber-optic 62
Repeater Module 62
TFR-16(RO) 66
TFC Fiber-optic 67
Converter 67
REDUNDANT LINK 68
BECOMES ACTIVE 68
TRE Token Ring 70
Elementary 70
Bridge Module 70
CML/NM RADring 72
CML/IB In-Band 73
Multiport 74
Independent 76
Repeater 76
Extension 77
2.12 Power Consumption 78
Chapter 3 80
System Installation 80
3.2 Unpacking 81
3.3 Site Requirements 81
Installation 83
3.6 Inserting Module Cards 85
3.7 Removing Module Cards 85
Basic Module 86
High Power 87
3.9 Connector Types 88
3-10 Cabling 3/11/98 12:29 89
3.10 Cabling 90
Connector 93
WIRES TO BE CUT 94
(RED AND BLACK 94
FROM THE FAN) 94
Chapter 4 96
Operation 96
Lobe Modules 97
RI/RO Modules 98
CML/NM Module 99
Ethernet 99
Moddules 99
Diagnostics 100
TRE Modules 101
Chapter 5 102
RADring Modules 102
Chapter 6 104
Token Ring Design 104
Considerations 104
Design Modules 105
Design Rules 106
Table 6-1 IBM Cabling System 107
Overcoming Lobe 108
Distance 108
Restrictions, and 108
Simplifying 108
Figure 6-1 Lobe Media Test 110
6.4 Simplified Design Rules 112
TFR Network 113
Two splices and one connector 117
6.6 Configuration Examples 118
TCR TCR 119
TFR in satellite mode 120
ACTIVE LOBES PASSIVE LOBES 122
Chapter 7 124
Ethernet Design 124
Design Methods 126
New Software Versions 132

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