Brocade Monitoring and Alerting Policy Suite Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 27)

Port Health category parameters (Continued) TABLE 6
Monitored
parameter Description
Class 3 timeouts
(C3TXTO) The number of Class 3 discard frames because of timeouts.
State changes
(STATE_CHG) 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.
SFP current
(CURRENT) The amperage supplied to the SFP transceiver in milliamps. Current area events indicate
hardware failures.
SFP receive power
(RXP) The power of the 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.
SFP transmit power
(TXP) The power of the 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.
SFP voltage
(VOLTAGE) The voltage supplied to the SFP transceiver in millivolts. If this value exceeds the threshold,
the SFP transceiver is deteriorating.
SFP temperature
(SFP_TEMP) The temperature of the SFP transceiver in degrees Celsius. A high temperature indicates
that the SFP transceiver may be in danger of damage.
Port health and CRC monitoring
There are two types of CRC errors that can be logged on a switch; taken together they can assist in
determining which link introduced the error into the fabric. The two types are plain CRCs, which have
bad end-of-frame (EOF) markers and CRCs with good EOF (crc g_eof) markers. When a crc g_eof
error is detected on a port, it indicates that the transmitter or path from the sending side may be a
possible source. When a complete frame containing a CRC error is first detected, the error is logged,
and the good EOF (EOFn) is replaced with a bad EOF marker (EOFni). Because Brocade switches
forward all packets to their endpoints, changing the EOF marker allows the packet to continue but not
be counted.
For thresholding and fencing purposes, only frames with CRC errors and good end-of-frame markers
are counted. This enables you to know exactly how many errors were originated in a specific link.
FRU Health
The FRU Health category enables you to define rules for field-replaceable units (FRUs), including small
form-factor pluggable (SFP) transceivers, power supplies, and flash memory.
NOTE
MAPS monitors FRUs (except for SFP FRUs) in the default switch only, this means that you will not get
FRU-related alerts for other switches, nor will the FRU category in the MAPS dashboard be updated for
FRU alerts on other switches.
Port health and CRC monitoring
Monitoring and Alerting Policy Suite Administrator's Guide 27
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