HP 3PAR InForm OS 3.1.1 Messages and Operators Guide

Port port:<nsp> "SFP is disabled"
Port port:<nsp> "Receiver Power Low: Check FC Cable"
Port port:<nsp> "Transmit Power Low"
Port port:<nsp> "SFP has TX fault"
Port Suggested Actions, General
Some specific examples are displayed below, but in general, use the following CLI commands to
check for these conditions:
For port SFP errors, use commands such as showport, showport -sfp,showport -sfp
-ddm, showcage, showcage -sfp, and showcage -sfp -ddm.
Port Example 1
Component ------Description------ Qty
Port Degraded or failed SFPs 1
Component -Identifier- --Description--
Port port:0:0:2 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 should identify the condition, such as
the following:
Port 0:0:2, SFP Degraded (Receiver Power Low: Check FC Cable)
Check SFP statistics using CLI commands such as showport -sfp, showport -sfp -ddm,
showcage, etc.
cli% showport -sfp
N:S:P -State-- -Manufacturer- MaxSpeed(Gbps) TXDisable TXFault RXLoss DDM
0:0:1 OK FINISAR_CORP. 2.1 No No No Yes
0:0:2 Degraded FINISAR_CORP. 2.1 No No No Yes
In the following example an RX power level of 361 microwatts (uW) for Port 0:0:1 DDM is a good
reading; and 98 uW for Port 0:0:2’s is a weak reading ( < 100 uW). Normal RX power level
readings are 200-400 uW.
cli% showport -sfp -ddm
--------------Port 0:0:1 DDM--------------
-Warning- --Alarm--
--Type-- Units Reading Low High Low High
Temp C 41 -20 90 -25 95
Voltage mV 3217 2900 3700 2700 3900
TX Bias mA 7 2 14 1 17
TX Power uW 330 79 631 67 631
RX Power uW 361 15 794 10 1259
--------------Port 0:0:2 DDM--------------
-Warning- --Alarm--
--Type-- Units Reading Low High Low High
Temp C 40 -20 90 -25 95
Troubleshooting Storage System Components 311