147
1. Enter system view.
system-view
N/A
2.
interfaces.
usb disable
By default, all USB interfaces are enabled.
Before executing this command, use the
umount
command to unmount all USB
partitions. For more information about this
command, see
Reference.
Verifying and diagnosing transceiver modules
Verifying transceiver modules
You can use one of the following methods to verify the genuineness of a transceiver module:
Display the key parameters of a transceiver module, including its transceiver type, connector
type, central wavelength of the transmit laser, transfer distance, and vendor name.
Display its electronic label. The electronic label is a profile of the transceiver module and
contains the permanent configuration, including the serial number, manufacturing date, and
vendor name. The data is written to the storage component during debugging or testing.
To verify transceiver modules, execute the following commands in any view:
Display the key parameters of
transceiver modules.
display transceiver
{
interface
[ interface-type
interface-number ] }
N/A
Display the electrical label
information of transceiver
modules.
display transceiver manuinfo
interface
[ interface-type
interface-number ] }
This
command cannot display
information for some transceiver
modules.
Diagnosing transceiver modules
The device provides the alarm and digital diagnosis features for transceiver modules. When a
transceiver module fails or is not operating correctly, you can perform the following tasks:
Check the alarms that exist on the transceiver module to identify the fault source.
Examine the key parameters monitored by the digital diagnosis feature, including the
temperature, voltage, laser bias current, TX power, and RX power.
To diagnose transceiver modules, execute the following commands in any view:
Display transceiver alarms.
display transceiver alarm
{
interface
[ interface-type
interface-number ] }
N/A
Display the current values
of the
digital diagnosis parameters on
transceiver modules.
display transceiver diagnosis
{
interface
[ interface-type
interface-number ] }
This c
information about some
transceiver modules.