Viewing The Port Log - HP AA979A - StorageWorks SAN Switch 2/8V Administrator's Manual

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
-------------------------------------------------
Thu Apr 14 12:07:09 2005
12:07:09.350
12:07:09.350
12:07:10.812
12:07:10.813
12:07:19.492
12:07:19.492
12:07:19.493
12:07:19.493
12:07:19.494
12:07:19.494
12:07:19.494
12:07:19.495
Use the commands summarized next to view and manage port logs.
Command
portLogClear
portLogDisable
portLogDump
portLogEnable
portLogShow
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.
task event port cmd
PORT Rx 0
PORT Tx 0
PORT Tx 0
PORT Rx 0
PORT Tx 4
PORT Tx 22
PORT Rx 4
PORT Tx 24
PORT Tx 31
PORT Rx 22
PORT Rx 24
PORT Rx 31
Description
Clear port logs for all or particular ports.
Disable port logs for all or particular ports.
Display port logs for all or particular ports, without page breaks.
Enable port logs for all or particular ports.
Display port logs for all or particular ports, with page breaks.
args
40 02fffffd,00fffffd,0608ffff,14000000
0 c0fffffd,00fffffd,060807fc
40 02fffffd,00fffffd,07feffff,14000000
0 c0fffffd,00fffffd,07fe0627
40 02fffffd,00fffffd,0800ffff,14000000
40 02fffffd,00fffffd,0802ffff,14000000
0 c0fffffd,00fffffd,08009287
40 02fffffd,00fffffd,0804ffff,14000000
40 02fffffd,00fffffd,0806ffff,14000000
0 c0fffffd,00fffffd,0802928d
0 c0fffffd,00fffffd,080492a3
0 c0fffffd,00fffffd,080692a7
Fabric OS 5.2.x administrator guide 275