Chapter 4: Redundancy
NetEnforcer AC-1000 Hardware Guide
4-19
Serial Redundancy
In Serial Redundancy two bypass units are connected to the network in serial and the
two NetEnforcers work in Active/Bypass mode.
One probe is in active mode at all times, and the other is in bypass mode. There is no
probe is standby mode. When the active probe moves to bypass, the passive probe
switches to active.
Even if the previously active probe recovers, it will remain in bypass. The system will
not try to converge to a pre-determined configuration, as it does in parallel redundancy
In a normal situation the Primary Bypass forwards all traffic to the Primary
NetEnforcer’s which is in Active mode.
Figure
4-7 – Serial Redundancy – Normal Scenario
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