WAN Backhaul Configuration

A Wireless Wide Area Network (WWAN) card is a specialized network interface card that allows a network device to connect, transmit and receive data over a Cellular Wide Area Network. The WWAN card uses point to point protocol (PPP) to connect to the Internet Service Provider (ISP) and gain access to the Internet. PPP is the protocol used for establishing internet links over dial-up modems, DSL connections, and many other types of point-to-point communications. PPP packages your system‘s TCP/IP packets and forwards them to the serial device where they can be put on the network. PPP is a full-duplex protocol that can be used on various physical media, including twisted pair or fiber optic lines or satellite transmission. It uses a variation of High Speed Data Link Control (HDLC) for packet encapsulation.
The following 3G cards are supported:
  • Verizon V740
  • Verizon PC770
  • Sprint C777
  • Novatel Merlin XU870
  • Sierra Aircard 880E
  • Telstra Elite Mobile Broadband
  • Option GT Ultra Express
  • Vodaphone Mobile Connect E3730
  • Aircard 503
  • Aircard 504 / AT & T 890

To define a WAN Backhaul configuration:

  1. Select Configuration → Devices → System Profile from the web UI.
  2. Expand the Interface menu and select WAN Backhaul.
    Click to expand in new window
    Profile Interface - WAN Backhaul screen
  3. Refer to the WAN (3G) Backhaul configuration to specify the access point‘s WAN card interface settings:
    WAN Interface Name Displays the WAN Interface name for the WAN 3G Backhaul card.
    Enable WAN (3G) Select this option to enable 3G WAN card support on the access point. A supported 3G card must be connected for this feature to work.
    Username Provide username for authentication support by the cellular data carrier.
    Password Provide password for authentication support by the cellular data carrier.
    Access Point Name (APN) Enter the name of the cellular data provider if necessary. This setting is needed in areas with multiple cellular data providers using the same protocols such as Europe, the Middle East and Asia.
    Authentication Type Use the drop-down menu to specify authentication type used by the cellular data provider. Supported authentication options include None, PAP, CHAP, MSCHAP, and MSCHAP-v2.
  4. Use the NAT Direction field to specify the NAT direction used with the access point‘s WAN card. Options include Inside, Outside or None. The default is None.
  5. Configure the IPv4 Inbound Firewall Rules. Use the drop-down menu to select a firewall (set of IP access connection rules) to apply to the PPPoE client connection. If a firewall rule does not exist suiting the data protection needs of the PPPoE client connection, select the Create icon to define a new rule configuration or the Edit icon to modify an existing rule.
  6. Select the VPN Crypto Map to use with this WWAN configuration. Use the drop-down menu to apply an existing crypto map configuration to this WWAN interface.
  7. Use the WWW Default Route Priority spinner to set a default route priority for this interface. The default value is 3000.
  8. Select OK to save the changes to the Advanced Settings screen. Select Reset to revert to the last saved configuration.