Brocade Communications Systems WFT-2D User Manual page 1390

33
MAPS monitoring categories
TABLE 111
Measure
Cyclic redundancy check (CRC)
Invalid transmission words (ITW)
Sync loss (LOSS_SYNC)
Link failure (LF)
Signal loss (LOSS_SIGNAL)
Protocol error (PE)
Link reset (LR)
Class 3 timeouts (C3TXTO)
State changes (STATE_CHG)
SFP Current
SFP Receive power (RXP)
SFP Transmit power (TXP)
SFP Voltage
SFP Temperature (SFP_TEMP)
SFP Power on hours (PWR_HRS)
1338
Port measures
Description
The number of times an invalid cyclic redundancy check error occurs on a
port or a frame that computes to an invalid CRC. Invalid CRCs can represent
noise on the network. Such frames are recoverable by retransmission.
Invalid CRCs can indicate a potential hardware problem.
The number of times an invalid transmission word error occurs on a port. A
word did not transmit successfully, resulting in encoding errors. Invalid word
messages usually indicate a hardware problem.
The number of times a synchronization error occurs on the port. Two
devices failed to communicate at the same speed. Synchronization errors
are always accompanied by a link failure. Loss of synchronization errors
frequently occur due to a faulty SFP transceiver or cable.
The number of times a link failure occurs on a port or the port sends or
receives a Not Operational Sequence (NOS) state. Both physical and
hardware problems can cause link failures. Link failures also frequently
occur due to a loss of synchronization or a loss of signal.
The number of times that a signal loss occurs in a port. Signal loss
indicates that no data is moving through the port. A loss of signal usually
indicates a hardware problem.
The number of times a protocol error occurs on a port. Invalid state due to
link reset response sequence (LRR) on an online link. Occasionally these
errors occur due to software glitches. Persistent errors occur due to
hardware problems.
The ports on which the number of link resets exceed the specified
threshold value.
The number of class 3 frames discarded due of timeouts.
The state of the port has changed for one of the following reasons:
•
The port has gone offline.
•
The port has come online.
•
The port is faulty.
The amount of supplied current to the SFP transceiver. Current area events
indicate hardware failures.
The amount of incoming laser, in microwatts (µw). This is used to help
determine if the SFP transceiver is in good working condition. If the counter
often exceeds the threshold, the SFP transceiver is deteriorating.
The amount of outgoing laser, in microwatts (µw). This is used to help
determine if the SFP transceiver is in good working condition. If the counter
often exceeds the threshold, the SFP transceiver is deteriorating.
The amount of voltage supplied to the SFP transceiver. If this value exceeds
the threshold, the SFP transceiver is deteriorating.
The physical temperature of the SFP transceiver, in degrees Celsius. A high
temperature indicates that the SFP transceiver might be in danger of
damage.
The number of hours the 16 Gbps SFP transceiver is powered on.
Brocade Network Advisor SAN User Manual
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