Cabletron Systems HSIM-F6 - Manual (Page 38)

Chapter 3: Local Management
3-14 HSIM-F6 User’s Guide
• Wrap-B - The flow of the primary ring is entering through port B
(secondary in) and is wrapped by the MAC, causing the ring to exit
through port B (primary out). Port A is disconnected from the ring. If
the HSIM-F6 MAC Configuration reads “Wrap-B” 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.
Figure 3-8 Example of Wrap-B MAC Configuration
• Isolated - Both port A and port B are isolated from the ring.
Figure 3-9 Example of Isolated MAC Configuration
Port B Port A
Primary
In
Secondary
Out
Primary
Out
Secondary
In
MAC
Port B Port A
Primary
In
Secondary
Out
Primary
Out
Secondary
In
MAC