Technical data

10-20 Fabric OS Administrator’s Guide
Publication Number: 53-0000518-09
Correcting Link Failures
10
If these fields do not appear, proceed to the step 6.
6. Correct the negotiation by entering the portCfgSpeed [slotnumber/]portnumber, speed_level
command if the fields in step 5 do not appear.
To check for a loop initialization failure
1. Verify the port is an L_Port.
a. Enter the switchShow command.
b. Check the comment field of the output to verify that the switch port indicates an L_Port. If a
loop device is connected to the switch, the switch port must be initialized as an L_Port.
c. Check to ensure that the port state is online; otherwise, check for link failures.
2. Verify the loop initialization if the port is not an L_port.
a. Enter the portLogShow or portLogDump command.
b. Check argument number four for the LISA frame (0x11050100).
The LISA frame indicates that the loop initialization is complete.
3. Skip point-to-point initialization.
The switch changes to point-to-point initialization after the Loop Initialization Soft Assigned
(LISA) phase of the loop initialization. This behavior sometimes causes trouble with old HBAs. If
this is the case, then:
Skip point-to-point initialization by using the portCfgLport Command.
To check for a point-to-point initialization failure:
1. Enter the switchShow command to confirm that the port is active and has a module that is
synchronized.
If a fabric device or another switch is connected to the switch, the switch port must be online.
2. Enter the portLogShow or portLogDump commands.
3. Verify that the event area for the port state entry is pstate. The command entry AC indicates that the
port has completed point-to-point initialization.
4. Skip over the loop initialization phase.
After becoming an active port, the port becomes an F_Port or an E_Port depending on the device
on the opposite side. If the opposite device is a fabric device, the port becomes an F_Port. If the
opposite device is another switch, the port becomes an E_Port.
termB:admin> portlogdumpport 4
time task event port cmd args
-------------------------------------------------
11:40:02.078 PORT Rx3 23 20 22000000,00000000,ffffffff,11050100
Received LISA frame
termB:root> portlogdumpport 4
time task event port cmd args
-------------------------------------------------
11:38:21.726 INTR pstate 4 AC