Cabletron Systems MT8-MIM Especificações Página 60
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Ethernet Network Requirements
5-6 Ethernet FOIRL (Single Mode)
Length
The 10BASE-F specification limits a multimode fiber optic cable segment to 2 km
or less. Assuming that a fiber optic cable meets all other limitations for 10BASE-F
usage, it is possible to extend a multimode fiber optic link to an absolute
maximum of 2 km. At a length of more than 2 km, the propagation delay
introduced by the multimode fiber optic cable segment may exceed the 25.6 µs
limit of the Ethernet specification and cause excessive OOW errors. Cabletron
Systems does not recommend the installation or use of any multimode fiber optic
cable segment that exceeds 10BASE-F limitations of 2 km.
Older networking equipment for fiber optic connections may be built to the
FOIRL specification. FOIRL devices will support a multimode fiber optic link of
up to 1 km.
Ethernet FOIRL (Single Mode)
All Cabletron Systems FOIRL products require that installed single mode fiber
optic facility cabling and cable hardware meet the following minimum
specifications. If a network cabling installation is not within the limitations
presented here, the operation of the FOIRL products may be affected.
Cable Type
FOIRL network devices require specific types of cabling. FOIRL single mode fiber
optic devices manufactured by Cabletron Systems are able to support connections
to and from the following types of single mode fiber optics:
• 8/125 µm
• 12/125 µm
Some Cabletron Systems single mode fiber optic devices may be connected to
multimode fiber optic cabling with measurements of 62.5/125 µm, but the greater
optical loss characteristics of multimode fiber optics will limit the maximum
distance of the single mode fiber optic signal to approximately 2 km.
Attenuation
Single mode fiber optic cabling must be tested with a fiber optic attenuation test
set configured to determine attenuation of the cable at a wavelength of 1300 nm.
The acceptable level of attenuation for a single mode fiber optic is less than or
equal to 10.0 dB for any given link.
- Cabletron Systems 1
- Cabling Guide 1
- Contents 5
- Chapter 11 FDDI Media 9
- Introduction 11
- 1-2 Document Organization 12
- Document Conventions 13
- Additional Assistance 14
- Related Documentation 14
- Cabling Terms 15
- 2-2 Physical Components 16
- Connector 17
- 2-4 Physical Components 18
- Physical Components 2-5 19
- Test Characteristics 20
- Test Characteristics 2-7 21
- 2-8 Test Characteristics 22
- Relevant Specifications 23
- Ethernet Media 25
- 4-2 Cabling Types 26
- Coaxial Cable 27
- 4-4 Cabling Types 28
- Unshielded Twisted Pair (UTP) 29
- 4-6 Cabling Types 30
- Cabling Types 4-7 31
- 4-8 Cabling Types 32
- Cabling Types 4-9 33
- 4-10 Cabling Types 34
- Cabling Types 4-11 35
- 4-12 Cabling Types 36
- Cabling Types 4-13 37
- Cabling Types 4-15 39
- 4-16 Cabling Types 40
- 4-18 Connector Types 42
- 4-20 Connector Types 44
- Annular Ring 44
- TRANSCEIVER 45
- 4-22 Connector Types 46
- UTP Cable 47
- 4-24 Connector Types 48
- Connector Types 4-25 49
- TransmitTransmit 50
- ReceiveReceive 50
- Connector Types 4-27 51
- Connector Types 4-29 53
- 4-30 Connector Types 54
- Ethernet Network Requirements 55
- Other Considerations 57
- 10BASE-F (Multimode) 58
- Insertion Loss 59
- Ethernet FOIRL (Single Mode) 60
- Termination 62
- Connectors/Taps 62
- 10BASE5 (Coaxial Cable) 63
- Grounding 64
- Full-Duplex Ethernet Network 65
- Requirements 65
- Insertion Loss (Attenuation) 66
- Fast Ethernet Network 73
- 100BASE-FX (Multimode) 76
- Hybrid Installations 77
- Repeater Classes 78
- Buffered Uplinks 79
- 7-8 Hybrid Installations 80
- 8-4 100BASE-TX 84
- 8-6 100BASE-FX (Multimode) 86
- 9-2 Cabling Types 88
- Cabling Types 9-3 89
- 9-4 Cabling Types 90
- 9-6 Cabling Types 92
- Cabling Types 9-7 93
- Cabling Types 9-9 95
- Connector Types 9-11 97
- 9-12 Connector Types 98
- Connector Types 9-13 99
- BK RE GR OR 100
- Unshielded Twisted Pair Cable 101
- Fiber Optics 103
- Token Ring Media 104
- 9-18 Connector Types 104
- Chapter 10 105
- Impedance 106
- Attenuation 106
- Link Length 107
- Trunk Cable Length 108
- Cable Type 109
- Crosstalk 110
- FDDI Media 115
- 11-2 Cabling Types 116
- Cabling Types 11-3 117
- 11-4 Cabling Types 118
- Shielded Twisted Pair (STP) 119
- 11-6 Cabling Types 120
- STP Cable Quality 121
- Cabling Types 11-9 123
- 11-10 Cabling Types 124
- Connector Types 125
- 11-12 Connector Types 126
- 11-14 Connector Types 128
- Connector Types 11-15 129
- 11-16 Connector Types 130
- FDDI Network Requirements 131
- Emitted Power 132
- TP -PMD (UTP) 134
- TP-PMD (STP) 135
- 12-6 TP-PMD (STP) 136
- Cabling Devices 137
- Hardware Mounting 138
- Enclosed Equipment Cabinet 139
- Cable Termination 140
- Harmonica 141
- Punchdown Block 142
- Distribution Box 143
- Wallplate 144
- Facility Cable Management 145
- 12 11 10 9 8 76543 21 147
- Innerduct 148
- Latching Duct 148
- Labeling Tape 149
- Ty-Wraps and Adhesive Anchors 150
- Connecting and Terminating 151
- 14-2 Ethernet 152
- Ethernet 14-3 153
- 14-4 Ethernet 154
- Ethernet 14-5 155
- 14-6 Ethernet 156
- ST Connector 157
- 14-8 Ethernet 158
- Token Ring 159
- 14-10 Token Ring 160
- Token Ring 14-11 161
- Token Ring MIC 162
- 14-14 FDDI 164
- FDDI 14-15 165
- FDDI MIC 166
- FDDI 14-17 167
- SC Connector 168
- FDDI 14-19 169
- 14-20 FDDI 170
- Charts and Tables 171
- A-2 Ethernet 172
- Ethernet A-3 173
- Token Ring A-5 175
- A-6 FDDI 176
- Glossary-1 177
- Attenuation to Card 178
- Glossary-2 178
- Glossary-3 179
- Channel to Crosstalk 179
- CSMA/CD to Dual Attached 180
- Glossary-4 180
- Glossary-5 181
- Dual Homing to FNB 181
- Frame to Interface 182
- Glossary-6 182
- Glossary-7 183
- Internet to MAU 183
- Mbps to NVRAM 184
- Glossary-8 184
- Glossary-9 185
- Octet to Redundant 185
- Relay to SIMM 186
- Glossary-10 186
- Glossary-11 187
- Switch to UTP 188
- Glossary-12 188
- Numerics 189
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