Port Status and Configuration

Viewing Port Status and Configuring Port Parameters

The autorun feature only works when a USB device is inserted and the USB port is enabled.

 

Behavior of Autorun When USB Port is Disabled

 

Software Versions K.13.XX Operation.

 

When using software version K.13.58, if the USB port is disabled (no usb-port

 

command), the USB autorun function does not work in the USB port until the

 

USB port is enabled, the config file is saved, and the switch is rebooted. The

 

5 volt power to the USB port remains on even after the USB port has been

 

disabled.

 

For software versions after K.13.58, the 5 volt power applied to the USB port

 

is synchronized with the enabling of the USB port, that is, when the USB port

 

is enabled, the 5 volts are supplied; when the USB port is disabled, the 5 volts

 

are not supplied. For previous software versions the power was supplied

 

continuously. The autorun function does not require a switch reboot, but the

 

USB device must be inserted at least once after the port is enabled so that the

 

switch recognizes that the device is present. If the USB device is inserted and

 

then the USB port is enabled, the switch does not recognize that a USB device

 

is present.

 

Software Version K.14.XX Operation.

 

For software versions K.14.XX, the USB port can be disabled and enabled

 

without affecting the autorun feature. When the USB port is enabled, the

 

autorun feature activates if a USB device is already inserted in the USB port.

 

Power is synchronized with the enabling and disabling of USB ports as

 

described above for K.13.59 and later software.

 

Enabling or Disabling Flow Control

 

 

N o t e

You must enable flow control on both ports in a given link. Otherwise, flow

 

control does not operate on the link, and appears as Off in the show interfaces

 

brief port listing, even if flow control is configured as enabled on the port in

 

the switch. (Refer to Figure 10-3on page 10-9.) Also, the port (speed-duplex)

 

mode must be set to Auto (the default).

 

 

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