Configuring Linecard Expansion Modules

This chapter contains the following sections:

Configuring Linecard Expansion Modules

Information About Linecard Expansion Modules

Configuring the LEM in 10G Mode

Procedure

  Command or Action Purpose

Step 1

switch# configure terminal

Enters global configuration mode.

Step 2

switch(config)# interface breakout slot slot port port-range map 10g-4x

Configures the breakout for an interface.

slot —valid slot values are from 1 to 8.

port-range —valid port-range values are from 1 to 12.

Step 3

switch(config)# poweroff module module-number

Power-off and power-on the module for the interface breakout to be effective. If the breakout feature is configured on the baseboard module, save the running configuration to startup configuration using the copy running-config startup-config command and then reload the switch.

Note

 

If the breakout feature is not configured on the baseboard module, then an additional reload is required.

Step 4

switch(config)# no poweroff module module-number

Brings the module up.

Step 5

switch(config)# copy running-config startup-config

Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration.

Example

Configuring the LEM in 40G Mode

Procedure

  Command or Action Purpose

Step 1

switch# configure terminal

Enters global configuration mode.

Step 2

switch(config)# no interface breakout slot slot port port-range map 10g-4x

Configures the breakout for an interface.

slot —valid values are 1 to 8.

port-range —valid values are .

Example

Selecting the Fabric Mode

Procedure

  Command or Action Purpose

Step 1

switch# configure terminal

Enters global configuration mode.

Step 2

switch(config)# fabric-mode {10g | 40g}

Selects the fabric mode.

10g —Runs the cross bar in 10G mode.

40g —Runs the cross bar in 40G mode.

Step 3

(Optional) switch(config)# copy running-config startup-config

(Optional)

Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration.

Example

This example shows how to select a fabric mode of 10G.

switch# configure terminal
switch(config)# fabric-mode 10g
switch(config)# copy running-config startup-config

This example shows how to select a fabric mode of 40G.

switch# configure terminal
switch(config)# fabric-mode 40g
switch(config)# copy running-config startup-config

What to do next

When changing the fabric mode, the system must be rebooted for the new mode to take effect.

Verifying the LEM Mode Configuration

Use one of the following commands to verify the configuration:

Command

Purpose

show interface eth1/2 capabilities

Displays information about the interface configuration.

show interface brief

Displays a brief summary of the interface configuration.