Cabletron Systems BRIM-F6 manual Isolated Both port a and port B are isolated from the ring

Chapter 3: Local Management

•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.

Primary		Primary
In		Out
Port A	MAC	Port B
Secondary		Secondary
Out		In
Figure 3-8 Example of Wrap-B MAC Configuration

• Isolated - Both port A and port B are isolated from the ring.

Primary

In

Port A

Secondary Out

MAC

Primary

Out

Port B

Secondary In

Figure 3-9 Example of Isolated MAC Configuration

3-14 HSIM-F6 User’s Guide