HP StorageWorks 1606 Brocade Fabric Watch Administrator's Guide v6.3.0 (53-100 - Page 39

Performance Monitor class areas, Port class areas, TABLE 5

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Areas 3 Performance Monitor class areas Table 5 lists Fabric Watch areas in the Performance Monitor class and describes each area. TABLE 5 Performance Monitor class areas Area Indicates Customer Defined (Filter Performance Monitor) Values for customer-defined performance areas. For more information on this area, see the Fabric OS Command Reference. Invalid Cyclic Redundancy Checks (CRC) (AL_PA and EE Performance Monitor) Errors have been detected in the Fibre Channel frame. Invalid CRC messages occur when the number of CRC errors in Fibre Channel frames for specific source ID (S_ID) and destination ID (D_ID) pairs change. These messages can also be caused by dirty or aging equipment and temperature fluctuations. Receive (Rx) Performance The percentage of word frames traveling from the configured S_ID to the D_ID exceeds (EE Performance Monitor) the configured thresholds. Transmit (Tx) Performance (EE Performance Monitor) The percentage of word frames traveling from the configured D_ID to the S_ID; user configuration triggers these messages, so you can use the Transmit Performance area to tune your network. Port class areas Table 6 lists and describes the Fabric Watch areas in the port class. NOTE Fabric Watch monitors and reports the status of physical and virtual FC ports. Physical GbE ports and ISCSI ports are not monitored and are not included in the Port Class area. TABLE 6 Area Port class areas Indicates Invalid Cyclic Redundancy Checks (CRCs) Invalid words C3TX_TO Link loss Signal loss Sync loss Packet loss (VE_Port only) The number of times an invalid CRC 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 word error occurs on a port. A word did not transmit successfully, resulting in encoding errors. Invalid word messages usually indicate a hardware problem. Class 3 discards frames because of timeout (on 8 Gbps platforms only). The number of times a link failure occurs on a port or sends or receives NOS. 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. Note: Loss of signal count still displays using the fwConfigure command, but it is no longer supported. 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 or cable. The number of packets routed through a port exceeds the port bandwidth. Fabric Watch Administrator's Guide 15 53-1001342-01

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Fabric Watch Administrator’s Guide
15
53-1001342-01
Areas
3
Performance Monitor class areas
Table 5
lists Fabric Watch areas in the Performance Monitor class and describes each area.
Port class areas
Table 6
lists and describes the Fabric Watch areas in the port class.
NOTE
Fabric Watch monitors and reports the status of physical and virtual FC ports. Physical GbE ports
and ISCSI ports are not monitored and are not included in the Port Class area.
TABLE 5
Performance Monitor class areas
Area
Indicates
Customer Defined
(Filter Performance
Monitor)
Values for customer-defined performance areas. For more information on this area,
see the
Fabric OS Command Reference
.
Invalid Cyclic Redundancy
Checks (CRC) (AL_PA and
EE Performance Monitor)
Errors have been detected in the Fibre Channel frame. Invalid CRC messages occur
when the number of CRC errors in Fibre Channel frames for specific source ID (S_ID)
and destination ID (D_ID) pairs change. These messages can also be caused by dirty
or aging equipment and temperature fluctuations.
Receive (Rx) Performance
(EE Performance Monitor)
The percentage of word frames traveling from the configured S_ID to the D_ID exceeds
the configured thresholds.
Transmit (Tx)
Performance (EE
Performance Monitor)
The percentage of word frames traveling from the configured D_ID to the S_ID; user
configuration triggers these messages, so you can use the Transmit Performance area
to tune your network.
TABLE 6
Port class areas
Area
Indicates
Invalid Cyclic Redundancy
Checks (CRCs)
The number of times an invalid CRC 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.
Invalid words
The number of times an invalid word error occurs on a port. A word did not
transmit successfully, resulting in encoding errors. Invalid word messages usually
indicate a hardware problem.
C3TX_TO
Class 3 discards frames because of timeout (on 8 Gbps platforms only).
Link loss
The number of times a link failure occurs on a port or sends or receives NOS.
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.
Signal loss
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.
Note: Loss of signal count still displays using the fwConfigure command, but it is
no longer supported.
Sync loss
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 or cable.
Packet loss (VE_Port only)
The number of packets routed through a port exceeds the port bandwidth.