Brocade Fabric Watch Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 72)

frame drops if left unchecked; therefore, set the alarm to fence the port. Refer to Port type: E_Port,
FOP_Port, or FCU_Port on page 79 for instructions.
• Areas: Receive (Rx) and Transmit (Tx) Performance
Rx and Tx Performance areas are used to monitor the bandwidth utilization of the interswitch links
(ISLs) in the fabric. Set the high boundary to 75 percent and the alarms to Above and In-Between
conditions. These settings indicate if the 75 percent threshold is exceeded and for how long. With
this information, you can determine if additional ISL bandwidth is required in the fabric.
NOTE
This only applies if trunking is not enabled. If trunking is enabled, use trunk utilization to monitor this
bandwidth utilization.
• Area: Link Reset
Set the alarm to fence the port. This prevents a "flapping" E_Port, which could lead to congestion or
frame loss. Refer to
Port type: E_Port, FOP_Port, or FCU_Port on page 79 for instructions.
• Area: Class 3 (C3) Discards
Unlike the other areas, take a conservative approach for the C3 Discards area. Use the default
settings and configure the alarms for Above. The goal is to determine the high boundary at which
the port would be fenced, so monitor the high boundary and change the settings accordingly.
• Area: Trunk Utilization
Set the high boundary to 75 percent and the alarms to Above and In-Between conditions. These
settings indicate if the 75 percent threshold is exceeded and for how long.
NOTE
This can only be configured if the trunking license is present.
• Areas: Primitive Sequence Protocol Error, State Changes, Utilization, Packet Loss
Use the default settings.
E_Port class default settings
Port fencing can be enabled or disabled for the following areas for the E_Port class:
• Link Failure Count
• Loss of Synchronization Count
• Primitive Sequence Protocol Error
• Invalid Transmission Word
• Invalid CRC Count
E_Port class default settings TABLE 17
Area Description Default threshold settings Default alarm
settings
Threshold state
Cyclic redundancy
check (CRC with
good EOF (crc
g_eof) markers) Monitors the number of
CRC errors. Unit: Errors
Time Base: minute
Low: 0
High: 1000
Buffer: 100
Below: 0
Above: 0
Informative
Out_of_range
E_Port class default settings
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