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■ The physical interface is Enabled. If the interface is shown as Disabled, do either
of the following:
■ In the CLI configuration editor, delete the disable statement at the [edit
interfaces interface-name] level of the configuration hierarchy.
■ In the J-Web configuration editor, clear the Disable check box on the
Interfaces>interface-name page.
■ The physical link is Up. A link state of Down indicates a problem with the interface
module, interface port, or physical connection (link-layer errors).
■ The Last Flapped time is an expected value. The Last Flapped time indicates the
last time the physical interface became unavailable and then available again.
Unexpected flapping indicates possible link-layer errors.
■ The traffic statistics reflect expected input and output rates. Verify that the
number of inbound and outbound bytes and packets matches expected
throughput for the physical interface. To clear the statistics and see only new
changes, use the clear interfaces statistics interface-name command.
■ The dialer state is Active when a USB modem call is in progress.
■ The LCP state is Opened when a USB modem call is in progress. An LCP state of
Closed or Not Configured indicates a problem with the dialer configuration that
needs to be debugged with the monitor traffic interface interface-name command.
For information about the monitor traffic command, see “Using the monitor traffic
Command” on page 246.
Related Topics For a complete description of show interfaces dl0 extensive output, see the JUNOS
Interfaces Command Reference.
46 ■ Verifying Dialer Interface Configuration
J-series™ Services Router Administration Guide