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Designing and Expanding the Network 2 - 27
Setting Redundancy
When you enable redundancy between two ports, the ports are
automatically enabled.
❑ Port 1 (or 3) as the primary link, which passes data.
❑ Port 2 (or 4) as the redundant link, which does not pass data in either
direction. However, the link is monitored for any failures (the Port
Status LED indicates any problems).
For maximum cable plant fault tolerance, connect both the primary and
backup ports back to the central concentrator (Figure 2-10). This
configuration allows the backup port to automatically take over if the
primary link fails