HP StorageWorks 2/16V HP StorageWorks Fabric OS 5.3.x administrator guide (569 - Page 289

Viewing the port log, Command, Description

Page 289 highlights

Viewing the port log The Fabric OS maintains an internal log of all port activity. The port log stores entries for each port as a circular buffer. Each port has space to store 8000 log entries. When the log is full, the newest log entries overwrite the oldest log entries. Port logs are not persistent and are lost over power-cycles and reboots. If the port log is disabled, an error message displays. NOTE: Port log functionality is completely separate from the system message log. Port logs are typically used to troubleshoot device connections. To view the port log 1. Connect to the switch and log in as admin. 2. Enter the portLogShow command: switch:admin> portlogshow 12 time task event port cmd args Thu Apr 14 12:07:09 2005 12:07:09.350 PORT Rx 0 40 02fffffd,00fffffd,0608ffff,14000000 12:07:09.350 PORT Tx 0 0 c0fffffd,00fffffd,060807fc 12:07:10.812 PORT Tx 0 40 02fffffd,00fffffd,07feffff,14000000 12:07:10.813 PORT Rx 0 0 c0fffffd,00fffffd,07fe0627 12:07:19.492 PORT Tx 4 40 02fffffd,00fffffd,0800ffff,14000000 12:07:19.492 PORT Tx 22 40 02fffffd,00fffffd,0802ffff,14000000 12:07:19.493 PORT Rx 4 0 c0fffffd,00fffffd,08009287 12:07:19.493 PORT Tx 24 40 02fffffd,00fffffd,0804ffff,14000000 12:07:19.494 PORT Tx 31 40 02fffffd,00fffffd,0806ffff,14000000 12:07:19.494 PORT Rx 22 0 c0fffffd,00fffffd,0802928d 12:07:19.494 PORT Rx 24 0 c0fffffd,00fffffd,080492a3 12:07:19.495 PORT Rx 31 0 c0fffffd,00fffffd,080692a7 Use the commands summarized next to view and manage port logs. Command Description portLogClear Clear port logs for all or particular ports. portLogDisable Disable port logs for all or particular ports. portLogDump Display port logs for all or particular ports, without page breaks. portLogEnable Enable port logs for all or particular ports. portLogShow Display port logs for all or particular ports, with page breaks. Note: Refer to the Fabric OS Command Reference Manual for additional information about these commands. The portLogDump command output (trace) is a powerful tool that is used to troubleshoot fabric issues. The portLogDump output provides detailed information about the actions and communications within a fabric. By understanding the processes that are taking place in the fabric, issues can be identified and located. The portLogDump command displays the port log, showing a portion of the Fibre Channel payload and header (FC-PH). The header contains control and addressing information associated with the frame. The payload contains the information being transported by the frame and is determined by the higher-level service or FC_4 upper level protocol. There are many different payload formats based on the protocol. Fabric OS 5.3.0 administrator guide 301

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Fabric OS 5.3.0 administrator guide
301
Viewing the port log
The Fabric OS maintains an internal log of all port activity. The port log stores entries for each port as a
circular buffer. Each port has space to store 8000 log entries. When the log is full, the newest log entries
overwrite the oldest log entries. Port logs are not persistent and are lost over power-cycles and reboots. If
the port log is disabled, an error message displays.
NOTE:
Port log functionality is completely separate from the system message log. Port logs are typically
used to troubleshoot device connections.
To view the port log
1.
Connect to the switch and log in as
admin
.
2.
Enter the
portLogShow
command:
Use the commands summarized next to view and manage port logs.
The
portLogDump
command output (trace) is a powerful tool that is used to troubleshoot fabric issues.
The
portLogDump
output provides detailed information about the actions and communications within a
fabric. By understanding the processes that are taking place in the fabric, issues can be identified and
located.
The
portLogDump
command displays the port log, showing a portion of the Fibre Channel payload and
header (FC-PH). The header contains control and addressing information associated with the frame. The
payload contains the information being transported by the frame and is determined by the higher-level
service or FC_4 upper level protocol. There are many different payload formats based on the protocol.
switch:admin>
portlogshow 12
time
task
event
port cmd
args
-------------------------------------------------
Thu Apr 14 12:07:09 2005
12:07:09.350
PORT
Rx
0
40
02fffffd,00fffffd,0608ffff,14000000
12:07:09.350
PORT
Tx
0
0
c0fffffd,00fffffd,060807fc
12:07:10.812
PORT
Tx
0
40
02fffffd,00fffffd,07feffff,14000000
12:07:10.813
PORT
Rx
0
0
c0fffffd,00fffffd,07fe0627
12:07:19.492
PORT
Tx
4
40
02fffffd,00fffffd,0800ffff,14000000
12:07:19.492
PORT
Tx
22
40
02fffffd,00fffffd,0802ffff,14000000
12:07:19.493
PORT
Rx
4
0
c0fffffd,00fffffd,08009287
12:07:19.493
PORT
Tx
24
40
02fffffd,00fffffd,0804ffff,14000000
12:07:19.494
PORT
Tx
31
40
02fffffd,00fffffd,0806ffff,14000000
12:07:19.494
PORT
Rx
22
0
c0fffffd,00fffffd,0802928d
12:07:19.494
PORT
Rx
24
0
c0fffffd,00fffffd,080492a3
12:07:19.495
PORT
Rx
31
0
c0fffffd,00fffffd,080692a7
Command
Description
portLogClear
Clear port logs for all or particular ports.
portLogDisable
Disable port logs for all or particular ports.
portLogDump
Display port logs for all or particular ports, without page breaks.
portLogEnable
Enable port logs for all or particular ports.
portLogShow
Display port logs for all or particular ports, with page breaks.
Note:
Refer to the
Fabric OS Command Reference Manual
for additional information about these
commands.