Design Rules for Token Ring and FDDI
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Token Ring Design Rules. The following table relates to provisioning networks based on Token Ring standards for IBM and IEEE 802.5. |
| IBM Token Ring | IEEE 802.5 | |
| Topology | Star | Not specified |
| Maximum Segment Length (meters) | Depends on type of cable, number of MAUs, and etceteras | Depends on type of cable, number of MAUs, and etceteras |
| Maximum Number of Attachments per Segment | 260 for STP 72 for UTP |
250 |
| Maximum Collision Domain | Depends on type of cable, number of MAUs, and etceteras | Depends on type of cable, number of MAUs, and etceteras |
| FDDI Design Rules. FDDI does not actually specify the maximum segment length or network diameter. The specifications are based on the amount of power loss which is equivalent to what is listed in the following table. |
| Multimode Fiber | Single Mode Fiber | UTP | |
| Topology | Dual ring Tree of concentrators and others |
Dual ring Tree of concentrators and others |
Star |
| Maximum Segment Length (meters) | 2 km between stations | 60 km between stations | 100 meters from hub to station |
| Maximum Number of Attachments per Segment | 1000 500 dual-attached stations |
1000 500 dual-attached stations |
2 (hub - station) or (hub - hub) |
| Maximum Network Diameter | 200 km | 200 km | 200 km |