Token Ring Statistics
Transmitted Beacons
Beacon frames are transmitted by ring stations when certain error conditions are detected. These frames notify all ring stations that there is a problem, and causes the stations in the fault domain (the beaconing station and its NAUN) to remove themselves from the ring and perform a loopback test. If either station fails the test, its removal should allow the ring to recover.
Recoveries
Indicates that claim tokens have been detected on the ring. Claim token frames are issued during the active monitor contention process; their presence on the ring indicates that the ring is recovering from the loss of the active monitor. This counter is reset once the new active monitor is chosen and issues a ring purge to reset the ring.
Lobe Wire Fault
Indicates that a station on the ring has detected a short or open condition on its lobe wires. This condition is detected by the loss of the phantom current. A station detecting this condition will remove itself from the ring.
Remove Frames
Indicates that a Remove MAC frame has been detected on the ring. A Remove MAC frame forces the receiving station to remove itself from the ring. Once a station has removed itself from the ring, its actions will depend upon its design: some devices will automatically try to
Auto Removes
Indicates that one or more stations has failed a loopback test performed as a result of a beaconing condition, and has therefore removed itself from the ring.
Single Station
This condition indicates that the management station has determined that it is the only station on the ring.
Hard Errors
If the management station has detected hard errors on the ring, this field will display “Detected.” If no hard errors were detected, this field will display “None.”
Management Station Statistics |
