Loopback Test Configuration Frequency; Loopback Test Configuration Frame Length - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual
Cisco mds 9000 family cli configuration guide - release 4.x (ol-18084-01, february 2009)
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- Command reference manual (1640 pages) ,
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Chapter 59
Monitoring System Processes and Logs
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
To disable or enable this feature in any switch in the Cisco MDS 9000 Family, follow these steps:
Command
Step 1
switch# config terminal
switch(config)#
Step 2
switch(config)# no system health
System Health is disabled.
switch(config)# system health
System Health is enabled.
Step 3
switch(config)# no system health interface fc8/1
System health for interface fc8/13 is disabled.
switch(config)# system health interface fc8/1
System health for interface fc8/13 is enabled.
Loopback Test Configuration Frequency
Loopback tests are designed to identify hardware errors in the data path in the module(s) and the control
path in the supervisors. One loopback frame is sent to each module at a preconfigured frequency—it
passes through each configured interface and returns to the supervisor module.
The loopback tests can be run at frequencies ranging from 5 seconds (default) to 255 seconds. If you do
not configure the loopback frequency value, the default frequency of 5 seconds is used for all modules
in the switch. Loopback test frequencies can be altered for each module.
To configure the frequency of loopback tests for all modules on a switch, follow these steps:
Command
Step 1
switch# config terminal
switch(config)#
Step 2
switch(config)# system health loopback
frequency 50
The new frequency is set at 50 Seconds.
Loopback Test Configuration Frame Length
Loopback tests are designed to identify hardware errors in the data path in the module(s) and the control
path in the supervisors. One loopback frame is sent to each module at a preconfigured size—it passes
through each configured interface and returns to the supervisor module.
The loopback tests can be run with frame sizes ranging from 0 bytes to 128 bytes. If you do not configure
the loopback frame length value, the switch generates random frame lengths for all modules in the switch
(auto mode). Loopback test frame lengths can be altered for each module.
To configure the frame length for loopback tests for all modules on a switch, follow these steps:
Command
Step 1
switch# config terminal
switch(config)#
OL-18084-01, Cisco MDS NX-OS Release 4.x
Online System Health Management
Purpose
Enters configuration mode.
Disables system health from running tests in
this switch.
Enables (default) system health to run tests
in this switch.
Disables system health from testing the
specified interface.
Enables (default) system health to test for
the specified interface.
Purpose
Enters configuration mode.
Configures the loopback frequency to 50 seconds.
The default loopback frequency is 5 seconds. The
valid range is from 5 to 255 seconds.
Purpose
Enters configuration mode.
Cisco MDS 9000 Family CLI Configuration Guide
59-11
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