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MOP Counters
Table G–1 (Cont.) MOP Counter Block
V3
V4
Name
Off Len
Off Len
Description
TxFAIL_CARIER_CHECK
-
-
60 8
Send failure - Carrier check
failed.
The data link did not
sense the receive signal that
is required to accompany the
transmission of a frame. Indicates
a failure in either the transmitting
or receiving hardware. Could
be caused by either transceiver,
transceiver cable, or a babbling
controller that has been cut off.
TxFAIL_SHRT_CIRCUIT
-
-
68 8
Send failure - Short circuit.
3
There is a short somewhere in the
local area network coaxial cable
or the transceiver or controller
/transceiver cable has failed.
This indicates a problem either in
local hardware or global network.
The two can be distinguished by
checking to see if other systems are
reporting the same problem.
TxFAIL_OPEN_CIRCUIT
-
-
70 8
Send failure - Open circuit.
3
There is a break somewhere in the
local area network coaxial cable.
This indicates a problem either in
local hardware or global network.
The two can be distinguished by
checking to see if other systems are
reporting the same problem.
TxFAIL_LONG_FRAME
-
-
78 8
Send failure - Frame too long.
3
The controller or transceiver cut off
transmission at the maximum size.
This indicates a problem with the
local system. Either it tried to send
a frame that was too long or the
hardware cutoff transmission too
soon.
3
Always zero.
(continued on next page)
G–6 MOP Counters