Cisco Catalyst 3750-X User Manual

13-16
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 13 Configuring Interface Characteristics
Using the Switch USB Ports
USB Type A Port
The USB Type A port provides access to external Cisco USB flash devices, also known as thumb drives
or USB keys. The switch supports Cisco 64 MB, 256 MB, 512 MB, and 1 GB flash drives. You can use
standard Cisco IOS command- line interface (CLI) commands to read, write, erase, and copy to or from
the flash device. You can also configure the switch to boot from the USB flash drive.
Beginning in privileged EXEC mode, follow these steps to allow booting from the USB flash device.
To get information about the USB device, use the sho
w usb {controllers | device | driver | port | tree}
privileged EXEC command.
This example configures the switch to boot from the Catalyst 3750-X flash device. The image is the
Cat
alyst 3750-X universal image.
Switch# configure terminal
Switch(config)# boot system flash usbflash0: c3750x-universal-mz
To disable booting from flash, enter the no form of the command.
This is sample output from the sh
ow usb device command:
Switch# show usb device
Host Controller: 1
Address: 0x1
Device Configured: YES
Device Supported: YES
Description: STEC USB 1GB
Manufacturer: STEC
Version: 1.0
Serial Number: STI 3D508232204731
Device Handle: 0x1010000
USB Version Compliance: 2.0
Class Code: 0x0
Subclass Code: 0x0
Protocol: 0x0
Vendor ID: 0x136b
Product ID: 0x918
Max. Packet Size of Endpoint Zero: 64
Number of Configurations: 1
Speed: High
Selected Configuration: 1
Selected Interface: 0
Configuration:
Number: 1
Number of Interfaces: 1
Description: Storage
Attributes: None
Max Power: 200 mA
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
boot system flash usbflash0: image Configure the switch to boot from the USB flash device. The image is
the name of the bootable image.
Step 3
show running-configuration Verify your setting.
Step 4
copy running-config startup-config (Optional) Save your entries in the configuration file.

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing