Digital Equipment DECrepeater 90FS, Руководство по установке и настройке

Страница: 70 / 80

62
DECrepeater 90FS Installation and Configuration
Redundant Fiber-Optic Link Configuration (Cont.)
Table 4 shows the difference in failure detection between partial fault detection and
full fault detection.
Table 4 Partial Fault Detection Versus Full Fault Detection
Link Failure from the
Master Port’s Perspective
Partial Fault Full Fault
TX Link RX Link
Detection Detection
Failure Not detected Detected
Failure Detected Detected
Failure in Both Detected Detected
Recommendations for Redundant-Link Configuration
Consider the following recommendations when configuring the DECrepeater 90FS
for redundancy to increase fault detection and improve network reliability:
•
Use responder ports (rather than non-responder ports) whenever possible.
•
If you use a combination of responder ports and non-responder ports, assign
the responder as the primary link, and the non-responder as the secondary link.
•
Assign the remote ports to separate modules. This ensures that one of the two
remote ports is functional in the event of a remote module failure.
•
Whenever possible, configure primary and secondary link cables into separate
pathways, to avoid a single point of failure.