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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring Interface Characteristics
Using the Switch USB Ports
switch-stack-1
Mar 1 00:20:48.635: %USB_CONSOLE-6-MEDIA_RJ45: Console media-type is RJ45.
You can configure the console type to always be RJ-45, and you can configure an inactivity timeout for
the USB connector.
Configuring the Console Media Type
If you configure the RJ-45 console, USB console operation is disabled, and input always remains with
the RJ-45 console.This configuration is global and applies to all switches in a stack.
To select the RJ-45 console media type, follow these steps beginning in privileged EXEC mode:
This example disables the USB console media type and enables the RJ-45 console media type:
Switch# configure terminal
Switch(config)# line console 0
Switch(config-line)# media-type rj45
This configuration immediately terminates any active USB consoles in the stack. A log shows that this
termination has occurred. This sample log shows that the console on switch 1 reverted to RJ-45.
*Mar 1 00:25:36.860: %USB_CONSOLE-6-CONFIG_DISABLE: Console media-type USB disabled by
system configuration, media-type reverted to RJ45.
At this point no switches in the stack allow a USB console to have input. A log entry shows when a
console cable is attached. If a USB console cable is connected to switch 2, it is prevented from providing
input.
*Mar 1 00:34:27.498: %USB_CONSOLE-6-CONFIG_DISALLOW: Console media-type USB is disallowed
by system configuration, media-type remains RJ45. (switch-stk-2)
This example reverses the previous configuration and immediately activates any USB console that is
connected.
Switch# configure terminal
Switch(config)# line console 0
Switch(config-line)# no media-type rj45
Configuring the USB Inactivity Timeout
The configurable inactivity timeout reactivates the RJ-45 console if the USB console is activated but no
input activity occurs on it for a specified time period. When the USB console is deactivated due to a
timeout, you can restore its operation by disconnecting and reconnecting the USB cable.
Command Purpose
Step 1
configure terminal Enters global configuration mode.
Step 2
line console 0 Configures the console. Enter line configuration mode.
Step 3
media-type rj45 Configures the console media type to always be RJ-45. If you do not
enter this command and both types are connected, the default is USB.
Step 4
end Returns to privileged EXEC mode.
Step 5
show running-configuration Verifies your setting.
Step 6
copy running-config startup-config (Optional) Saves your entries in the configuration file.
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