Module Initialization Overview - Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual

Troubleshooting Switching and Services Modules
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
The module status indicates the state of the module.
a module can experience and provides a brief description of the state
Table 4-10 Module States
Module Status Description
OK The module is up and running.
powered-down The module has been powered down because of user configuration or because of an
error. Use the show running-config | include poweroff CLI command to determine
err-pwd-dn
whether or not the module has been configured as powered-down. Otherwise, the
module was powered down because of an error.
If a module reports a FATAL error, the supervisor logs an exception and reboots the
module. If the supervisor reboots the module for errors three times in a one-hour
interval, the supervisor keeps the module permanently powered down.
pwr-denied The chassis does not have enough remaining power to power up the module. Use the
show environment power CLI command to show the current power status of the
switch.
powered-up The module powered up and the supervisor is waiting for the module to initialize.
pwr-cycled The module reloaded.
testing The module has powered up and doing runtime diagnostics.
initializing The module is receiving configuration from the supervisor.
upgrading The module is in the process of a nondisruptive upgrade.
failure The module has experienced a failure, but the module has not been power cycled
because the debug flag was configured. Use the debug flag to collect debug information
from the module as required by your customer support representative. Once all
necessary data is collected, reload the module by using the reload module CLI
command.

Module Initialization Overview

When a module is inserted into the switch, the module goes through an initial start up sequence. This
sequence brings the module to a known good state before the module is declared online. The
initialization sequence includes the following steps:
•
•
•
•
•
Most of the module related failures (such as the module not coming up, the module getting reloaded, and
so on) can be analyzed by looking at the logs stored on the switch. Use the following CLI commands to
view this information:
•
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
4-22
Module Bootup, page 4-23
Image Download, page 4-23
Runtime Diagnostics, page 4-24
Runtime Configuration, page 4-24
Online and Operational, page 4-24
show system reset-reason module
Chapter 4
Table 4-10 identifies all of the different states that
.
Troubleshooting Hardware
Module
Status
Condition
Good
Good
Failed
Failed
Transient
Transient
Transient
Transient
Transient
Failed
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