Teldat Dm709-I User Manual page 15

Teldat SA
'Removes' packets
Line errors
ARI/FCI errors
Frame copy errors
Lost frames
'Burst' errors
Input drops
'Token' errors
Too big frames
Mac Code Version
LAN Interfaces
Number of MAC remove from the ring frames received by the interface. On receiv-
ing these, the interface removes itself from the ring.
Increases when a frame is repeated or copied, the Error Detected Indicator (EDI)
bit is 0 for the incoming frame and one of the following conditions is met:
a) A Token has a code violation.
b) A frame has a code violation between the start and end delimiters.
c) A Frame Check Sequence (FCS) error occurs.
The ARI/FCI (Address Recognized Indicator/Frame Copied Indicator) Errors
counter increases if the interface receives either of the following:
a) An Active Monitor Present (AMP) MAC frame with the ARI/FCI bits equal to 0
and a Standby Monitor Present (SMP) MAC frame with the ARI/FCI bits equal to
0.
b) More than one SMP MAC frame with the ARI/FCI bits equal to 0, without an in-
tervening AMP MAC frame.
This condition indicates the upstream neighbor (from where frames are received)
is unable to activate the ARI/FCI bits.
The interface, in receive/copy mode, recognizes a frame addressed to its specific
address but finds the Address Recognize Indicator (ARI) bits is not equal to 0.
This error indicates a possible line hit or duplicate address.
The interface is in transmit mode and fails to receive the end of a transmitted
frame.
The interface detects the absence of transitions for five half-bits times between the
start delimiter (SDEL) and the end delimiter (EDEL), or between the EDEL and the
SDEL.
The interface, in repeat mode, recognizes a frame addressed to it but has no
available space to copy the frame.
Increases when the active monitor detects a token protocol with any of the follow-
ing errors:
a) The token MONITOR_COUNT bit with nonzero priority equals one.
b) The frame MONITOR_COUNT bit equals one.
c) No token or frame is received within a 10ms window.
d) The starting delimiter/token sequence has a code violation in an area where
code violations cannot exist.
Number of received frames with a bigger data field than the one supported by the
interface.
Mac code version running in the Token Ring communications processor.
2 Monitoring Token Ring Interfaces
9