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Chapter 3: Local Management
Primary
In
Port A
Secondary
Out
Figure 3-6 Example of Through-A MAC Configuration
The flow of the primary ring is entering through port A
•
Wrap-A -
(primary in) and is wrapped by the MAC, causing the ring to exit
through port A (secondary out). Port B is disconnected from the ring.
If the DELHF-UA MAC Configuration reads "Wrap-A" the ring has
lost the redundancy of the secondary ring due to the wrapped
condition. This configuration should be repaired, as additional
problems could isolate stations from the FDDI ring.
Primary
In
Port A
Secondary
Out
Figure 3-7 Example of Wrap-A MAC Configuration
The flow of the primary ring is entering through port B
•
Wrap-B -
(secondary in) and is wrapped by the MAC, causing the ring to exit
3-14
MAC
MAC
DELHF-UA User's Guide
Primary
Out
Port B
Secondary
In
Primary
Out
Port B
Secondary
In
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