
234
if using any 4 Mbps only adapters or filters).
Cable Length and Lobe Wiring Rules for
The Cabletron Systems Token Ring network
The tables in this section specify the maximum supported lobe lengths for the types of cables listed. An additional 10 m (33 ft) per lobe length is allowed to accommodate patch cables, unless otherwise specified.
| Ring | Types | Types |
| Type 8 | Type 9 |
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Speed | 1 and 1A | 2 and 2A |
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4 Mbps | 750 m (2460 ft) | 750 m (2460 ft) | 376 m (1234 ft) | 500 m (1640 ft) |
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16 Mbps | 430 m (1410 ft) | 430 m (1410 ft) | 215 m (705 ft) | 295 m (968 ft) |
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100 Mbps | 90 m (295 ft) | Not Supported | Not Supported | Not Supported |
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| See the Note! |
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➽ | Note: An additional 10 m (33 ft) UTP 100 Ohm CAT.5 lobe length and a |
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| maximum of two UTP/STP converters without impedance transformation |
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| is allowed to accommodate connection to the STP cabling. The UTP/STP |
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| converter must be specified for 100 MHz operation. |
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Table 19. Lobe Length for 150 Ohm Shielded Media |
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| Ring Speed |
| 100 Ohm Type 3 |
| 100 Ohm Category 3 |
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4 Mbps |
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| 100 m (328 ft) |
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| 250 m (820 ft) |
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16 Mbps |
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| Not Supported |
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| 100 m (328 ft) |
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100 Mbps |
| Not Supported |
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| Not Supported |
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Table 20. Lobe Lengths for 100 Ohm Shielded or Unshielded Cable
SmartStack | Cable and Pin Information |