•Recovery mode set
•Streaming signal (not Claim Token MAC frame)
•Streaming signal, Claim Token MAC frame or
intermediate detection of hard error
Beacon Time Keeps track of the amount of time that the ring has
been in the beaconing state.
Beacon Packet Refers to the total number of Beacon MAC frames
detected by the probe.
Claim Token Event This counter keeps track of the total number of claim
token events detected by the probe. A claim token
event occurs when the ring enters the claim token
state from normal ring state or ring purge state. The
claim token state that comes in response to a beacon
state is not included. The claim token event occurs
when:
•The active monitor detects a loss of signal, detects
expiration of its receive_notification timer, or
cannot receive enough of its own Ring Purge MAC
frames.
•The standby monitor detects a loss of signal, or
detects expiration of its good_token or
receive_notification timers.
•A ring station attaches to the ring and does not
detect an active monitor.
Claim Token Packet Refers to the total number of Claim Token MAC
frames detected by the probe.
NAUN Change Any ring station upon detecting a change in the
address of its nearest active upstream neighbor
(NAUN) during the neighbor notification process will
send a NAUN Change MAC frame to the configuration
report server. This address change indicates that
either a ring station has attached to the ring, or a
station has removed itself from the ring.
Line Error This error counter is incremented when the ring
station detects:
•A code violation between the starting and ending
delimiters of the frame or token
•A Frame Check Sequence error
Line errors will increment the error counters for the
station reporting the problem and its nearest upstream
neighbor. This error is reported in the Soft Error
Report MAC frame.
Internal Error This error is flagged when a ring station is detected to
be in a marginal operating condition. This statistic is
found in the total number of internal errors reported in
the Soft Error Report MAC frame.
Burst Error This error occurs when a new station is inserted into
the ring. It is normally reported by downstream
stations and occurs more frequently on a 16 Mbps
LAN than a 4 Mbps LAN. This statistic is found in the
204 8260 Multiprotocol Intelligent Switching Hub