Notes On System Design - Fujitsu PRIMEQUEST 480 System Design Manual

5.3

Notes on System Design

5.3.1 Learning table
The GSWB has the switching function, which creates a learning table for
automatically recording connection information indicating which port is connected to
which IO_Unit port.
The age-out function deletes the old connection information when ports are moved
such as because of a partition reconfiguration. Upon receipt of polling data from the
GSWB, the function also automatically finds the relevant port to implement
communication.
Age-out of learning table
• Symptom
When a bridge relay is used, age-out of the learning table is performed at a different
time from the setting.
• Cause
A gap between the MAC address learning timing and learning table monitoring
timing causes a time shift between the specified aging time and actual age-out time.
C122-B001-02EN
5.3 Notes on System Design
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