Hardware Failure Action; Test Run Requirements - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Online System Health Management
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
Command
Step 2
switch(config)# system health loopback
frame-length 128
Step 3
switch(config)# system health loopback
frame-length auto
To verify the loopback frequency configuration, use the show system health loopback frame-length
command.
switch# show system health loopback frame-length
Loopback frame length is set to auto-size between 0-128 bytes

Hardware Failure Action

The failure-action command controls the Cisco NX-OS software from taking any action if a hardware
failure is determined while running the tests.
By default, this feature is enabled in all switches in the Cisco MDS 9000 Family—action is taken if a
failure is determined and the failed component is isolated from further testing.
Failure action is controlled at individual test levels (per module), at the module level (for all tests), or
for the entire switch.
To configure failure action in a switch, follow these steps:
Command
Step 1
switch# config terminal
switch(config)#
Step 2
switch(config)# system health failure-action
System health global failure action is now enabled.
Step 3
switch(config)# no system health failure-action
System health global failure action now disabled.
Step 4
switch(config)# system health module 1
failure-action
System health failure action for module 1 is now
enabled.
Step 5
switch(config)# no system health module 1 loopback
failure-action
System health failure action for module 1 loopback
test is now disabled.

Test Run Requirements

Enabling a test does not guarantee that a test will run.
Tests on a given interface or module only run if you enable system health for all of the following items:
•
•
•
Cisco MDS 9000 Family CLI Configuration Guide
59-12
The entire switch.
The required module.
The required interface.
Chapter 59 Monitoring System Processes and Logs
Purpose
Configures the loopback frame length to 128
bytes. The valid range is 0 to 128 bytes.
Configures the loopback frame length to
automatically generate random lengths (default).
Purpose
Enters configuration mode.
Enables the switch to take failure action
(default).
Reverts the switch configuration to
prevent failure action being taken.
Enables switch to take failure action for
failures in module 1.
Prevents the switch from taking action on
failures determined by the loopback test
in module 1.
OL-18084-01, Cisco MDS NX-OS Release 4.x