To verify a USB modem configuration, perform the following tasks:
Verify that the USB modem interface is correctly configured and display the status of the modem.
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
The output shows a summary of interface information and displays the modem status.
Verify the following information:
For more information, see Modifying USB Modem Initialization Commands.
Determine the following information:
Verify that the dialer interface is correctly configured.
From the CLI, enter the show interfaces extensive command.
user@host> show interfaces dl0 extensive
Physical interface: dl0, Enabled, Physical link is Up
Interface index: 128, SNMP ifIndex: 24, Generation: 129
Type: 27, Link-level type: PPP, MTU: 1504, Clocking: Unspecified, Speed: Unspecified
Device flags : Present Running
Interface flags: SNMP-Traps
Link type : Full-Duplex
Link flags : Keepalives
Physical info : Unspecified
Hold-times : Up 0 ms, Down 0 ms
Current address: Unspecified, Hardware address: Unspecified
Alternate link address: Unspecified
Last flapped : Never
Statistics last cleared: Never
Traffic statistics:
Input bytes : 13859 0 bps
Output bytes : 0 0 bps
Input packets: 317 0 pps
Output packets: 0 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0, Policed discards: 0,
Resource errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, MTU errors: 0, Resource errors: 0
Logical interface dl0.0 (Index 70) (SNMP ifIndex 75) (Generation 146)
Description: USB-modem-remote-management
Flags: Point-To-Point SNMP-Traps 0x4000 LinkAddress 23-0 Encapsulation: PPP
Dialer:
State: Active, Dial pool: usb-modem-dialer-pool
Dial strings: 220
Subordinate interfaces: umd0 (Index 64)
Activation delay: 0, Deactivation delay: 0
Initial route check delay: 120
Redial delay: 3
Callback wait period: 5
Load threshold: 0, Load interval: 60
Bandwidth: 115200
Traffic statistics:
Input bytes : 24839
Output bytes : 17792
Input packets: 489
Output packets: 340
Local statistics:
Input bytes : 10980
Output bytes : 17792
Input packets: 172
Output packets: 340
Transit statistics:
Input bytes : 13859 0 bps
Output bytes : 0 0 bps
Input packets: 317 0 pps
Output packets: 0 0 pps
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured,
mpls: Not-configured
CHAP state: Success
Protocol inet, MTU: 1500, Generation: 136, Route table: 0
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 172.20.10.1, Local: 172.20.10.2, Broadcast: Unspecified,
Generation: 134
The output shows a summary of dialer interface information. Verify the following information: