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Table 2-1. Seven Basic Network Rules
Rule | Definition | Recommendations/Notes |
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1 | If possible, use | Use 62.5 micron cable to conform |
| with the IEEE | |
| backbone medium. | upcoming ANSI FDDI standards. |
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|
|
| Use |
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|
|
2 | Wire the backbone in | Make sure to lay extra fiber |
| a star topology to | cables. The extra cost is small and |
| isolate faults. | you will find you need them as |
|
| your network grows. |
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|
|
|
| The star topology conforms to |
|
| FDDI wiring as well |
|
| sure to run at least two fiber |
|
| strands to every backbone |
|
| connection. |
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3 | The maximum Fiber | The 4200 meters is the maximum |
| Ethernet network | distance between any two |
| diameter is 4200 | transceivers on the network. |
| meters of fiber cable. |
|
| The 4200 meters does not include | |
|
| |
|
| the transceiver cable (that is, drop |
|
| or patch cable) that connects a |
|
| device with an external |
|
| transceiver. Transceiver cables |
|
| can extend up to 50 meters. Thus, |
|
| total network diameter can be as |
|
| much as 4300 meters (4200 m + 2 |
|
| * 50 m) between any two nodes. |
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Designing and Expanding the Network 2 - 3