Nortel Networks OPTera Metro 3500 User Manual
Page 132
2-94 Operation, administration, and maintenance (OAM) features
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
DEFERTRANS
(Delayed Transmission)
Half
Count of frames for which the first transmission attempt is
delayed because the medium is busy.
This parameter is not applicable to the 2xGigE/FC-P2P
circuit pack, a value of “0” is always returned.
LATECOLL
(Late Collision)
Half
Number of times that a collision is detected later than 512
bit-times into the transmission of a packet.
This parameter is not applicable to the 2xGigE/FC-P2P
circuit pack, a value of “0” is always returned.
EXCESSCOLL
(Excess collisions)
Half
The number of times that frames failed to transmit because
of excessive collisions (more than 15 collisions of the frame).
This parameter is not applicable to the 2xGigE/FC-P2P
circuit pack, a value of “0” is always returned.
INTERNALMACRXERR
(Internal MAC Receive Error)
Both
Count of frames for which the reception fails because of an
internal MAC sublayer receive error.
CARSENERR
(Carrier Sense Error)
Half
Number of times that the carrier sense condition was lost or
never asserted when attempting to transmit a frame.
This parameter is not applicable to the 2xGigE/FC-P2P
circuit pack, a value of “0” is always returned.
FRTOOLONGS
(Frames too long)
Both
The number of frames received at the port that exceed 1518
bytes (and have valid FCS).
FRTOOSHORTS
(Frames too short)
Both
The number of frames received at the port that are smaller
than the allowed 64-byte frame size.
INTERNALMACTXERR
(Internal MAC Transmit Error)
Both
Count of frames for which the reception fails because of an
internal MAC sublayer transmission error.
SYMBOLERR
(Symbol Error)
Both
Count of invalid data symbol (100M), or GMII Data reception
error (1000M).
INPAUSEFR
(In pause frames)
Full
The number of pause frames received at the port.
OUTPAUSEFR
(Out pause frames)
Full
The number of pause frames transmitted by the port.
Table 2-18 (continued)
Ethernet Specific Operational Measurements
Name
Duplex
Definition