Fop_Port And Fcu_Port Subclass Setting Guidelines - Brocade Communications Systems StoreFabric SN6500B Administrator's Manual

7
portThConfig command procedures
TABLE 17
Area
Utilization
Link reset

FOP_Port and FCU_Port subclass setting guidelines

FOP_Port and FCU_Port guidelines for the areas listed below represent a more aggressive
approach in most areas.
NOTE
The settings in these subclasses include settings for the host bus adapter (HBA) ports as well as the
storage ports.
•
•
•
64
E_Port class default settings (Continued)
Description
The percent of
utilization for the
port at the time of
the last poll.
Monitors the
number of link
resets sent by a
given port (LR-Out)
and received on a
given port (LR-In).
Areas: Link Failure Count, Loss of Synchronization Count
Change the default high boundary from 500 to 15 (per minute) for Link Failure Count and from
500 to 45 (per minute) for Loss of Synchronization Count. Leave the Buffer setting to 0 (the
default). Set the alarm configurations to send alerts to both the error log and SNMP. These
settings are the same for an HBA port or a storage port.
Area: Loss of Signal Count
Unlike the other areas, take a conservative approach for the Loss of Signal Count area. Change
the default high boundary from 5 to 45 (per minute) and set the alarm configuration to send
alerts to both the error log and SNMP.
Areas: Invalid Transmission Words, Invalid CRC Count
For these two classes, the high boundary settings are split. For Host devices, keep the defaults
of 1000 (per minute) and buffer of 100. For storage devices, tighten the boundaries
substantially: change the default high boundary for Invalid Transmission Words to 80, and
change the high boundary for Invalid CRC Count to 40 (per minute).
Hosts and HBAs reboot so do not set alerts for these devices. Storage devices, however, should
not be rebooting, so you should set the alarm to alert more frequently.
Excessive invalid words or CRCs on F/FL_ports lead to fabric congestion and possible frame
drops if left unchecked; therefore, set the alarm to fence the port. See
FOP_Port, or FCU_Port" on page 68 for instructions. In addition, set the alarm configurations to
send alerts to both the error log and SNMP.
Default threshold Default alarm settings
settings
Unit: Errors Below: 0
Time Base: minute Above: 0
Low: 0
High: 100
Buffer: 0
Unit: Errors Below: 0
Time Base: minute Above: 0
Low: 0
High: 500
Buffer: 50
Threshold state
Informative
Informative
Informative
Out_of_range
"Port type: E_Port,
Fabric Watch Administrator's Guide
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