Section 3-4. Managing Modules


3-4. Managing Modules

  • Many devices have multiple blades or modules used for switching services.

  • Some of these modules have their own operating systems and can be accessed directly for configuration.

  • Most modules can be power cycled or reset individually.

  • For some switches, it is possible to power down a module.

  • For COS switches, you can view the configuration of each module individually.

  • For COS switches, you can clear the configuration of a single module.

Viewing Modules

In both IOS and COS, you can use modular switches to effect a more flexible switch configuration. To view the modules installed on a switch, use one of the following commands:

COS

 show modules 

Supervisor IOS

 (privileged) show module all 

L2 IOS

 (privileged) show hardware or show version 


These commands show the hardware or module information for the switches.

Accessing Modules

Most modules and ports are configured through the main CLI for the switch. However, a handful of modules, such as the Multilayer Switch Feature Card (MSFC) or the ATM interface on a 2900MXL, must be accessed individually and configured separately. To access these interfaces, use the session command:

COS

 session mod# 

IOS

 (privileged)session slot# 


The slot# or mod# indicates in which slot or module in the switch the card is. For a 2900MXL, this is slot 1 or 2. For a Layer 3 modulean RSM or MSM in a Catalyst 4000, 5000, or 6000 switchthis corresponds to the module number into which the card is plugged. For a Route Switch Feature Card (RSFC) or MSFC, this is 15 for the MSFC or RSFC in slot 1 and 16 for the MSFC or RSFC in slot 2.

NOTE

You can also access many of these modules with a console port directly on the blade. For console access to the MSFC on the Catalyst 6000, use the command switch console.


Resetting Modules

You can reset modules on an individual basis. Therefore, you can jumpstart a group of ports without having to reset the entire switch:

COS

 reset mod# 

IOS

 (privileged) power cycle module slot 


The reset command causes an entire module to be powered down and then back up, and forces the module to go through Power-On Self-Test (POST) as it reloads. Some IOS switches do not offer this option. For those switches, you can reset a port with the shutdown and no shutdown commands.

Powering Modules Up and Down

For the IOS and COS modular switches, you can power down a module. Powering down disables the module and all its ports. If the switch is reset or power cycled, the module remains in a powered-down state. This state can be useful for troubleshooting a boot problem or if the power supply cannot handle the complete switch power load:

COS

 set module power down mod 

IOS

 (global) no power enable module slot 


These commands disable the modules. For an IOS switch, none of the module's configuration are saved; and if the switch is reset, all the configuration entries for that module are lost. To re-enable the modules, use the following commands:

COS

 set module power up mod 

IOS

 (global)power enable module slot 


Viewing Module Configurations

For COS devices, you can view the configuration of a specific module as follows:

COS

 show configuration mod# [all] 

IOS

N/A


Use the module number to specify which module's parameters you want to view. If you do not specify the all option, only the nondefault configuration parameters display.

Clearing Module Configurations

For COS devices, you can clear the configuration of a specific module as follows:

COS

 clear config mod# all 

IOS

N/A


Use mod# to specify which module you want to clear. This command is particularly useful if you remove a card and replace it with a different one. If you remove an 8-port Gigabit Ethernet module and replace it with a 16-port module, for example, you must clear the configuration of the slot before the new module will be active.



Cisco Field Manual. Catalyst Switch Configuration
Cisco Field Manual. Catalyst Switch Configuration
ISBN: 1587050439
EAN: N/A
Year: 2001
Pages: 150

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