Brocade FICON Administrator’s Guide (Supporting Fabric OS v7.3.0) - Manual (Page 90)

Settings for FICON environments
For typical FICON environments, port fencing is usually only set for CRC errors and Invalid Words.
The default of 1,000 errors per minute is a little high for CRC errors and Invalid Words. A more
common setting is 50 errors per minute. This is high enough to ignore occasional errors and transient
errors due to recabling but low enough to stop problematic optics from causing fabric issues.
By default, the alarms are set to fence the port, log an alert, send an e-mail message, and set an
SNMP trap. In most FICON environments, only fencing the port and logging the alert are desired.
The following are the default thresholds:
• Low - 0
• High - 1,000 errors per minute
FICON information
You can display link incidents, registered listeners, node identification data, and FRU failures, as
described in the following sections.
Link incidents
The Registered Link Incident Report (RLIR) ELS contains the link incident information sent to a
listener N_Port.
To display link incidents, connect to the switch, log in as user, and enter one of the following
commands:
• For the local switch: ficonShow rlir
• For all switches defined in the fabric: ficonShow rlirrlir fabric
Identifying ports
The ficonShow rlir command displays, among other information, a tag field for the switch port. You
can use this tag to identify the port on which a FICON link incident occurred. The tag field is a
concatenation of the switch domain ID and port number, in hexadecimal format. The following example
shows the top portion of command output which shows a link incident for the switch port at domain ID
120, port 93 (785d in hex):
switch:admin> ficonshow rlir
{
{Fmt Type PID Port Incident Count TS Format Time Stamp
0x18 F 785d00 93 1 Time server Thu Apr 22 09:13:32 2004
Port Status: Link not operational
Link Failure Type: Loss of signal or synchronization
Registered Port WWN Registered Node WWN Flag Node Parameters
50:05:07:64:01:40:16:03 50:05:07:64:00:c1:69:ca 0x10 0x200115
(output truncated)
For complete examples of output from this command, refer to the ficonShow command section of the
Fabric OS Command Reference.
Settings for FICON environments
88 FICON Administrator's Guide
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