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Verifying a USB Modem Interface
Purpose Verify that the USB modem interface is correctly configured and display the status
of the modem.
Action From the CLI, enter the show interfaces extensive command.
user@host> show interfaces umd0 extensive
Physical interface: umd0, Enabled, Physical link is Up
Interface index: 64, SNMP ifIndex: 33, Generation: 1
Type: Async-Serial, Link-level type: PPP-Subordinate, MTU: 1504,
Clocking: Unspecified, Speed: MODEM
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps Internal: 0x4000
Link flags : None
Hold-times : Up 0 ms, Down 0 ms
Last flapped : Never
Statistics last cleared: Never
Traffic statistics:
Input bytes : 21672
Output bytes : 22558
Input packets: 1782
Output packets: 1832
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards:
0,
Resource errors: 0
Output errors:
Carrier transitions: 63, Errors: 0, Drops: 0, MTU errors: 0, Resource errors:
0
MODEM status:
Modem type : LT V.92 1.0 MT5634ZBA-USB-V92 Data/Fax Modem
(Dual Config) Version 2.27m
Initialization command string : ATS0=2
Initialization status : Ok
Call status : Connected to 4085551515
Call duration : 13429 seconds
Call direction : Dialin
Baud rate : 33600 bps
Most recent error code : NO CARRIER
Logical interface umd0.0 (Index 2) (SNMP ifIndex 34) (Generation 1)
Flags: Point-To-Point SNMP-Traps Encapsulation: PPP-Subordinate
Meaning The output shows a summary of interface information and displays the modem
status.
Verify the following information:
■ 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.
Verifying a USB Modem Interface ■ 43
Chapter 2: Setting Up USB Modems for Remote Management