DECrepeater 90FS Installation and Configuration
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Redundant Fiber-Optic Link Configuration
This section describes the configuration and implementation of a redundant-link pair
(RLP) of Ethernet 10BaseFL links.
NOTE:
You must configure the fiber-optic ports using HUBwatch
before connecting the cables.
Redundant Fiber-Optic Link Overview
Redundant ports are usually configured between two or more repeaters to provide a
standby link in case the active link fails. If the active link fails, the standby link is
automatically activated to handle traffic between the repeaters.
The basic redundant configuration consists of a pair of master ports and two remote
ports. The master ports control which of the two lines is active and which is standby,
therefore, the master ports are referred to as a master pair.
The master ports can be connected to two remote ports on the same repeater or on
different repeaters, but the remote ports must be on the same LAN (or extended
LAN).
NOTE:
This redundant configuration does not result in a repeater
loop, because only one of the links is active.
The remote ports can be one of two types: a responder port or a non-responder port.
A responder port provides full fault detection because it signals the master if it
detects a failure in its receive link. A non-responder port provides only partial fault
detection because it does not signal the master if a failure occurs in its receive link.
NOTE:
The DECrepeater 90FS and the DECrepeater 900FP are
the only DECrepeaters that can be configured as
redundant port repeaters.
Redundant Fiber-Optic Link Components
The following components make up redundant fiber-optic link configurations:
Summary of Contents for DECrepeater 90FS
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