Example for Configuring a Link of a 3G Cellular Interface as the Primary Link to Connect to the Internet (WCDMA Network)

Procedure

1. Configure C-DCC for a dial-up connection.

   # Create an APN profile.

   <Huawei> system-view

   [Huawei] sysname Router

   [Router] apn profile 3gprofile

   [Router-apn-profile-3gprofile] apn 3GNET

   [Router-apn-profile-3gprofile] user name 3guser password cipher YsHsjx_202206 authentication-mode auto

   [Router-apn-profile-3gprofile] quit

   # Obtain an IP address dynamically.

   [Router] interface cellular 0/0/0

   [Router-Cellular0/0/0] ip address negotiate

   # Configure a DNS server address through PPP negotiation.

   [Router-Cellular0/0/0] ppp ipcp dns request

   # Enable C-DCC.

   [Router-Cellular0/0/0] dialer enable-circular

   # Configure a dialer number.

   [Router-Cellular0/0/0] dialer number *99# autodial

   # Configure a network connection mode.

   [Router-Cellular0/0/0] mode wcdma wcdma-precedence

   # Bind the APN profile to the 3G cellular interface.

   [Router-Cellular0/0/0] apn-profile 3gprofile

   [Router-Cellular0/0/0] shutdown

   [Router-Cellular0/0/0] undo shutdown

   [Router-Cellular0/0/0] quit

2. Configure the enterprise intranet.

   # Create VLAN 10 and add Ethernet2/0/0 to VLAN 10.

   [Router] vlan 10

   [Router-vlan10] quit

   [Router] interface ethernet 2/0/0

   [Router-Ethernet2/0/0] port link-type trunk

   [Router-Ethernet2/0/0] port trunk allow-pass vlan 10

   [Router-Ethernet2/0/0] quit

   # Enable DHCP.

   [Router] dhcp enable

   # Create a global address pool.

   [Router] ip pool 3gpool

   [Router-ip-pool-3gpool] network 10.10.10.0 mask 255.255.255.0

   [Router-ip-pool-3gpool] gateway-list 10.10.10.254

   [Router-ip-pool-3gpool] quit

   # Configure the interface to use the global address pool to allocate IP addresses to users.

   [Router] interface vlanif 10

   [Router-Vlanif10] ip address 10.10.10.1 255.255.255.0

   [Router-Vlanif10] dhcp select global

   [Router-Vlanif10] quit

3. Configure NAT.

   [Router] acl number 3002
   [Router-acl-adv-3002] rule 5 permit ip source 10.10.10.0 0.0.0.255
   [Router-acl-adv-3002] quit
   [Router] interface cellular 0/0/0
   [Router-Cellular0/0/0] nat outbound 3002
   [Router-Cellular0/0/0] quit

4. Configure a default route and specify Cellular0/0/0 as the outbound interface.

   [Router] ip route-static 0.0.0.0 0 cellular 0/0/0

5. Verify the configuration.

   # Run the display interface cellular command to check information about the cellular interface. In the command output, traffic is forwarded through the cellular interface, both the physical layer status and link layer status of the interface are Up and the IP address dynamically obtained is 10.1.1.2/24.

   [Router] display interface cellular 0/0/0
   Cellular0/0/0 current state : UP
   Line protocol current state : UP (spoofing)
   Description:HUAWEI, AR Series, Cellular0/0/0 Interface
   Route Port,The Maximum Transmit Unit is 1500, Hold timer is 10(sec)
   Internet Address is negotiated, 10.1.1.2/24
   Link layer protocol is PPP   
   LCP opened, IPCP opened
   Current system time: 2011-06-08 11:35:23
   Modem State: Present
   Model = MC509
   Current Network Connection = WCDMA(WCDMA)
   Current RSSI = -69 dBm
   Current SINR = 6 dB (weak)
   Last 300 seconds input rate 555 bytes/sec 4440 bits/sec 12 packets/sec 
   Last 300 seconds output rate 11230 bytes/sec 89840 bits/sec 311 packets/sec 
       Input: 210 packets, 87205 bytes
         Unicast:                  200,       Ununicast:                  10
       Output:225340 packets, 6760917 bytes
         Unicast:                  225300,    Ununicast:                  40
       Input bandwidth utilization  : 0.01%
       Output bandwidth utilization : 0.01%
   

   # Run the display cellular command to check call session information on the 3G modem. You can see that the APN is 3GNET, the network type is WCDMA, and the network connection mode is WCDMA precedence.

   [Router] display cellular 0/0/0 all
   Modem State:
   Hardware Information.
   =====================
   Model = MC509
   Modem Type = WCDMA USB modem
   Modem Firmware Version = 11.106.15.17.000
   Hardware Version = CP12TCPU
   Integrate circuit card identity (ICCID) = 98681011274300909893  
   International Mobile Subscriber Identity (IMSI) = 460016002707237
   International Mobile Equipment Identity (IMEI) = 354661034412719
   Factory Serial Number (FSN) = MLA7NA1093003693
   Modem Status = Online
   Profile Information.
   ====================
   Profile 1 = ACTIVE
   --------
   PDP Type = IPv4, Header Compression = OFF
   Data Compression = OFF
   Access Point Name (APN) = 3GNET
   Packet Session Status = Active
   * - Default profile
   Network Information.
   ====================
   Current Service Status = Service available
   Service Domain = Combined
   Current Service = Combined
   Packet Service = Attached
   Packet Session Status = Active
   Current Roaming Status = Home
   Network Selection Mode = Automatic
   Network Connection Mode = WCDMA precedence
   Current Network Connection = WCDMA(WCDMA)
   Mobile Country Code (MCC) = 460
   Mobile Network Code (MNC) = 01
   Mobile Operator Information = "CHN-CUGSM"                        
   Location Area Code (LAC) = 53505
   Cell ID = 6012
   Upstream Bandwidth = 5.7mbps
   Downstream Bandwidth = 384kbps
   Radio Information.
   ==================
   Current Band = ANY
   Current RSSI = -69 dBm (good)
   Bands supported :                                
     GSM: GSM850 GSM900 GSM1800 GSM1900             
     WCDMA: WCDMA850 WCDMA900 WCDMA2100 WCDMA1900   
   Modem Security Information.
   ===========================
   PIN Verification = Disabled
   PIN Status = Ready
   Number of Retries remaining = 3
   SIM Status = OK