3Com 510M-FBP Network Card User Manual


 
2 - 18 ONline Ethernet 10BASE-FB Module Installation and Operation Guide
3. AUI cables of up to 50 meters are not included in Rule number 1, thus
the total network diameter between fiber Ethernet nodes can be 4110
meters (4200 m - 190 m + 50 m + 50 m = 4110 m) through a single
concentrator
.
Figure 2-5. All-Fiber Network
The Ethernet four-repeater rule limits the number of repeaters between any
two transceivers to four. In general, this restricts most vendor
configurations to a maximum of four concentrators connected in series.
This restriction does not apply to the ONline System Concentrators when
using ONline 10BASE-FB Modules to connect concentrators. This is because
the 10BASE-FB Modules use a synchronous (repeaterless) technology.