2 - 18 ONline Ethernet 10BASE-FB Module Installati on a n d Operation Guide
3. AUI cables of up to 50 meters are not included in Ru le number 1, thus
the total network diameter between fiber Ethern et nodes can be 4110
meters (4200 m - 190 m + 50 m + 50 m = 4110 m) through a s ingle
concentrator
.
Figure 2-5. All-Fiber Network
The Ethernet four-repeater rule limits the nu mber of repeaters between any
two transceivers to four. In general, this restric ts m ost vendor
configurations to a maximum of fo ur concentrators connected in seri es.
This restriction does not apply to the ONline Sys tem Concentrators when
using ONline 10BASE-FB Modules to connect concentrators. This is be cause
the 10BASE-FB Modules use a synchronous (rep eaterless) technology.