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FDDI Management
MAC State
This field indicates the current state of the selected module’s MAC component. (The RMT component of SMT monitors MAC operation and takes actions necessary to aid in achieving an operational ring.) Possible states are:
Not Available | There is no MAC on the FDDI ring associated with the |
| SMT entity, or the selected SMT entity is not attached to |
| the main ring through the backplane FNB A and B ports. |
The ring is functioning normally. While in this state, the | |
| MAC being managed is part of an operational FDDI ring. |
Isolated | SMT has just initialized RMT or RMT has entered this |
| state during a path test (trace) after ring beaconing; RMT |
| is not aware of the ring path or state. |
The MAC being managed by the selected SMT is | |
| participating in ring recovery; the ring is not operational. |
Detect | The claim (beacon) process of the FDDI ring protocol has |
| exceeded one second. There may be a problem on the |
| ring; any duplicate address conditions are being |
| detected. In this state, the ring is still alive, but no data is |
| being transmitted. |
The ring is not operational; the address of the MAC | |
| under control of the SMT entity has been found to |
| duplicate that of another MAC on the ring. The duplicate |
| address condition prevented ring recovery and |
| initialization after a claim and beacon process. This state |
| will not occur unless you are using |
| addresses, as |
| to be unique. |
The ring is operational; however, the address of the MAC | |
| under control of the SMT entity has been found to |
| duplicate that of another MAC on the ring. Corrective |
| actions will be attempted before the duplicate address |
| condition causes ring initialization to fail after the claim |
| and beacon recovery process. Like |
| state will not occur unless you are using |
| |
Directed | The beacon process did not complete within 7 seconds. |
| The selected SMT has directed the controlled MAC to |
| send beacon frames to notify the other stations that a |
| serious problem exists on the ring, and a Trace state is |
| soon to follow. |
Trace | A problem exists on the ring which could not be |
| corrected during the beaconing process, and a Trace has |
| been initiated. During a Trace (or Path Test), the SMT |
| sends a signal that forces its nearest upstream neighbor |
Configuration |