S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
59-17
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 59 Monitoring System Processes and Logs
Online System Health Management
Use the EXEC-level
system health clear-errors
command at the interface or module level to erase any
previous error conditions logged by the system health application. The
battery-charger
, the
bootflash
,
the
cache-disk
, the
eobc
, the
inband
, the
loopback
, and the
mgmt
test options can be individually
specified for a given module.
The following example clears the error history for the specified Fibre Channel interface:
switch#
system health clear-errors interface fc 3/1
The following example clears the error history for the specified module:
switch#
system health clear-errors module 3
The following example clears the management test error history for the specified module:
switch#
system health clear-errors module 1 mgmt
Performing Internal Loopback Tests
You can run manual loopback tests to identify hardware errors in the data path in the switching or
services modules, and the control path in the supervisor modules. Internal loopback tests send and
receive FC2 frames to/from the same ports and provide the round trip time taken in microseconds. These
tests are available for Fibre Channel, IPS, and iSCSI interfaces.
Use the EXEC-level
system health internal-loopback
command to explicitly run this test on demand
(when requested by the user) within ports for the entire module.
switch#
system health internal-loopback interface iscsi 8/1
Internal loopback test on interface iscsi8/1 was successful.
Sent 1 received 1 frames
Round trip time taken is 79 useconds
Use the EXEC-level
system health internal-loopback
command to explicitly run this test on demand
(when requested by the user) within ports for the entire module and override the frame count configured
on the switch.
switch#
system health internal-loopback interface iscsi 8/1 frame-count 20
Internal loopback test on interface iscsi8/1 was successful.
Sent 1 received 1 frames
Round trip time taken is 79 useconds
Use the EXEC-level
system health internal-loopback
command to explicitly run this test on demand
(when requested by the user) within ports for the entire module and override the frame length configured
on the switch.
switch#
system health internal-loopback interface iscsi 8/1 frame-count 32
Internal loopback test on interface iscsi8/1 was successful.
Sent 1 received 1 frames
Round trip time taken is 79 useconds
Note
If the test fails to complete successfully, the software analyzes the failure and prints the following error:
External loopback test on interface fc 7/2 failed. Failure reason: Failed to loopback,
analysis complete Failed device ID 3 on module 1