Component ------Summary Description------ Qty
Port Degraded or failed SFPs 1
Component -Identifier- --Detailed Description--
Port port:0:1:1 SFP is Degraded
port
suggested action 1
An SFP in a Node-Port is reporting a degraded condition. This is most often caused by the SFP receiver
circuit detecting a low signal level (RX Power Low), and that is usually caused by a poor or contaminated
FC connection, such as a cable. An alert must identify the condition, such as the following:
Port 0:1:1, SFP Degraded (Receiver Power Low: Check FC Cable)
Check SFP statistics using CLI commands, such as
showport -sfp
,
showport -sfp -ddm
.
cli%
showport -sfp 0:1:1
N:S:P -State-- -Manufacturer- MaxSpeed(Gbps) TXDisable TXFault RXLoss DDM
0:1:1 OK HP-F 8.5 No No No Yes
--------------------------------------------------------------------------
1
In the following example, an RX power level of 522 microwatts (uW) for Port 0:1:1 DDM is a good reading;
and 12 uW for Port 1:1:1 is a weak reading ( < 15 uW). Normal RX power level readings are 300-700 uW.
cli%
showport -sfp -ddm 0:1:1 1:1:1
--------------Port 0:1:1 DDM--------------
-Warning- --Alarm--
--Type-- Units Reading Low High Low High
Temp C 29 -5 85 -10 90
Voltage mV 3339 3000 3600 2900 3700
TX Bias mA 8 2 14 1 17
TX Power uW 478 158 562 125 631
RX Power uW 522 15 1000 10 1258
--------------Port 1:1:1 DDM--------------
-Warning- --Alarm--
--Type-- Units Reading Low High Low High
Temp C 33 -5 85 -10 90
Voltage mV 3332 3000 3600 2900 3700
TX Bias mA 7 2 14 1 17
TX Power uW 476 158 562 125 631
RX Power uW 98 15 1000 10 1258
port
example 2
Component -Summary Description- Qty
Port Missing SFPs 1
Component -Identifier- -Detailed Description--
Port port:0:3:1 SFP is missing
port
suggested action 2
FC node-ports that normally contain SFPs will report an error if the SFP has been removed. The condition
can be checked using the
showport -sfp
command. In this example, the SFP in 1:1:1 has been
removed from the Adapter:
Troubleshooting
159
