Table Of Contents

K Commands

kernel core

K Commands

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The commands in this chapter apply to the Cisco MDS 9000 Family of multilayer directors and fabric switches. All commands are shown here in alphabetical order regardless of command mode. See the "Command Modes" section to determine the appropriate mode for each command. For more information, refer to the Cisco MDS 9000 Family Configuration Guide.

•kernel core

kernel core

Use the kernel core command to generate a core dump for each module. Use the no form of this command to negate the command or revert to its factory

kernel core {limit number | module slot {force | level {all | header | kernel | ram | used-ram} | target ipaddress}

no kernel core {limit number | module slot {force | level {all | header | kernel | ram | used-ram} | target ipaddress}

Syntax Description

limit number	Limits the number of modules for which the core is generated. The range is 1 to 6.
module slot	Configures the module requiring the core generation.
force	Forces a module to dump kernel core.
level	Specifies the core dump level for the selected module.
all	Dumps all the memory (requires 1G of space)
header	Dumps kernel header only.
kernel	Dumps all kernel memory pages.
ram	Dumps all the RAM pages.
used-ram	Dumps all the used RAM pages.
target ipaddress	Configures the external server IP address on the sme physical LAN.

Defaults

Disabled.

Command Modes

Configuration mode.

Command History

Release	Modification
1.1(1)	This command was introduced.

Usage Guidelines

Core dumps performed on the supervisor module can lead to packet loss, even in a dual supervisor configuration.

Examples

The following example limits core generation to two modules.

switch(config)# kernel core limit 2

succeeded

The following example configures module 5 to generate cores.

switch(config)# kernel core module 5

succeeded

The following example configures module 5 to generate only header-level cores.

switch(config)# kernel core module 5 level header

succeeded

The following example configures the external server.

switch(config)# kernel core target 10.50.5.5

succeeded

Related Commands

Command	Description
show kernel	Displays configured kernel core settings.
show running-config	Displays all switch configurations saved to PSS.