HP StorageWorks 1606 Brocade Fabric OS Troubleshooting and Diagnostics Guide v - Page 26

Switch message logs

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2 Switch message logs Switch message logs Switch message logs (RAS logs) contain information on events that happen on the switch or in the fabric. This is an effective tool in understanding what is going on in your fabric or on your switch. Weekly review of the RAS logs is necessary to prevent minor problems from becoming larger issues, or in catching problems at an early stage. Below are some common problems that can occur with or in your system message log. Symptom Inaccurate information in the system message log Probable cause and recommended action In rare instances, events gathered by the track change feature can report inaccurate information to the system message log. For example, a user enters a correct user name and password, but the login was rejected because the maximum number of users had been reached. However, when looking at the system message log, the login was reported as successful. If the maximum number of switch users has been reached, the switch will still perform correctly in that it will reject the login of additional users, even if they enter the correct user name and password information. However, in this limited example, the Track Change feature will report this event inaccurately to the system message log; it will appear that the login was successful. This scenario only occurs when the maximum number of users has been reached; otherwise, the login information displayed in the system message log should reflect reality. See the Fabric OS Administrator's Guide for information regarding enabling and disabling track changes (TC). Symptom MQ errors are appearing in the switch log. Probable cause and recommended action An MQ error is a message queue error. Identify an MQ error message by looking for the two letters MQ followed by a number in the error message: 2004/08/24-10:04:42, [MQ-1004], 218,, ERROR, ras007, mqRead, queue = raslog-test- string0123456-raslog, queue I D = 1, type = 2 MQ errors can result in devices dropping from the switch's Name Server or can prevent a switch from joining the fabric. MQ errors are rare and difficult to troubleshoot; resolve them by working with the switch supplier. When encountering an MQ error, issue the supportSave command to capture debug information about the switch; then, forward the supportSave data to the switch supplier for further investigation. 12 Fabric OS Troubleshoot and Diagnostics Guide 53-1001340-01

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12
Fabric OS Troubleshoot and Diagnostics Guide
53-1001340-01
Switch message logs
2
Switch message logs
Switch message logs (RAS logs) contain information on events that happen on the switch or in the
fabric. This is an effective tool in understanding what is going on in your fabric or on your switch.
Weekly review of the RAS logs is necessary to prevent minor problems from becoming larger
issues, or in catching problems at an early stage.
Below are some common problems that can occur with or in your system message log.
Symptom
Inaccurate information in the system message log
Probable cause and recommended action
In rare instances, events gathered by the
track change
feature can report inaccurate information
to the system message log.
For example, a user enters a correct user name and password, but the login was rejected because
the maximum number of users had been reached. However, when looking at the system message
log, the login was reported as successful.
If the maximum number of switch users has been reached, the switch will still perform correctly in
that it will reject the login of additional users, even if they enter the correct user name and
password information.
However, in this limited example, the Track Change feature will report this event inaccurately to the
system message log; it will appear that the login was successful. This scenario only occurs when
the maximum number of users has been reached; otherwise, the login information displayed in the
system message log should reflect reality.
See the
Fabric OS Administrator’s Guide
for information regarding enabling and disabling track
changes (TC).
Symptom
MQ errors are appearing in the switch log.
Probable cause and recommended action
An MQ error is a message queue error. Identify an MQ error message by looking for the two letters
MQ
followed by a number in the error message:
2004/08/24-10:04:42, [MQ-1004], 218,, ERROR, ras007, mqRead, queue =
raslog-test- string0123456-raslog, queue I
D = 1, type = 2
MQ errors can result in devices dropping from the switch’s Name Server or can prevent a switch
from joining the fabric. MQ errors are rare and difficult to troubleshoot; resolve them by working
with the switch supplier. When encountering an MQ error, issue the
supportSave
command to
capture debug information about the switch; then, forward the
supportSave
data to the switch
supplier for further investigation.