4000 Router Series Layer 2 - WAN Configuration Guide

Task Command

Display the call connection information

of the 3G modem.

display cellular interface-number

Display information about a cellular

interface.

display controller [ cellular [ interface-number ] ]

Clear the statistics for a cellular

interface.

reset counters controller [ cellular [ interface-number ] ]

3G modem configuration example

Network requirements

As shown in Figure 33, the router provides a USB 3G or SIC-3G modem, and the PC dials up to access

a 3G network through Dial-on-Demand Routing (DDR).

For more information about DDR dialup, see "Configuring DDR."

Figure 33 Network diagram

Configuration procedure

# Configure a dial access control rule for dialer access group 1.

<Router> system-view

[Router] dialer-group 1 rule ip permit

# Channelize the cellular interface into a synchronous/asynchronous serial interface.

[Router] controller cellular 0/0

[Router-Cellular0/0] serial-set 0

[Router-Cellular0/0] quit

# Assign an IP address to interface Serial 0/0:0.

[Router] interface serial 0/0:0

[Router-Serial0/0:0] ip address 1.1.1.1 255.255.0.0

# Enable circular DDR on interface Serial 0/0:0.

[Router-Serial0/0:0] dialer circular enable

# Associate interface Serial 0/0:0 with dialer access group 1.

[Router-Serial0/0:0] dialer-group 1

# Set the interval for DDR to make the next call attempt to 5 seconds.

[Router-Serial0/0:0] dialer timer autodial 5

# Configure a dial string for calling a remote end.

[Router-Serial0/0:0] dialer number 666666