3Com LINKBUILDER 3C18500, User Manual

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DUA1850-0AAA05
NORMAL mode - In NORMAL mode the RingBuilder’s local ring
section is inserted into the main path of the external ring, thereby
extending the local ring section to include other stations on the
external ring. Faults occurring on the external ring can be prevented
from affecting the local ring section by selecting the FAIL-SAFE
mode for the Ring-In and Ring-Out ports (see “ RingBuilder Modes ”
on page 9-15 ).
Figure 9-11 Normal RingBuilder Mode
The figure above shows the internal connections in the RingBuilder
when operating in the NORMAL mode.
REPEATER mode - In the REPEATER mode the main path of the
external ring bypasses the RingBuilder’s Local Ring Section, thereby
isolating the RingBuilder’s local ring section from the external ring.
The RingBuilder continues to provide retiming for the internal
chassis ring and also the external main and Backup Rings.