Add Mobile Broadband GSM Interface
    • 07 Jun 2024
    • 2 Minutes to read
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    Add Mobile Broadband GSM Interface

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    • PDF

    Article summary

    Mobile Broadband interfaces can be configured when a mobile broadband modem is available to the device. The Nodegrid SR family (NSR, GSR, BSR, LSR, HSR) support built-in modems available as optional add-ons. For all other units, external modems can be used.

    The created interfaces allow the system to establish an Internet connection most used for failover options. Users and remote systems can directly access the device through a mobile connection (if supported by the ISP).

    An APN (provided by the carrier) is required for all cellular connections. For more information on APNs, see

    1. Go to Network :: Connections.
    2. Click Add (displays dialog).
    3. Enter Name.
    4. On Type drop-down, select Mobile Broadband GSM (dialog changes)
    5. On Interface drop-down, select one.
    6. Enter Description.
    7. If Connect Automatically checkbox is selected, connection is automatically established at startup.
    8. Set as Primary Connection checkbox (defines interface as the primary connection. Only one interface can be the primary.)
    9. If Enable LLDP advertising and reception through this connection checkbox is selected:  On Port ID drop-down, select one. On Port Description drop-down, select one. 
    10. Select Block Unsolicited Incoming Packets checkbox (automatically blocks all inbound connections on the interface).
    11. If the Enable Connection Health Monitoring checkbox is selected (expands dialog). When a modem fails to connect the system automatically resets the modem if it has already been reset the system performs a power cycle. 
      1. Select Ensure Connection is Up checkbox
      2. Enter IP Address
      3. Enter Interval (hours) (default: 24)
        Note: If Connection Health Monitoring is enabled for the interface and a modem is detected but not usable, the system automatically resets the modem. If a reset fails to fix the issue, the system performs a power cycle on the modem in the next run of the health monitoring. The next power cycle is performed only after 24 hours.
    12. In IPv4 Mode menu, select one:
      • No IPv4 Address radio button
      • DHCP radio button
      • Enter IPv4 details:
        • (optional) IPv4 DNS Server
        • IPv4 DNS Search (defines a domain name for DNS lookups)
        • IPv4 Default Route Metric
        • Ignore the obtained IPv4 Default Gateway checkbox
        • Ignore the obtained DNS server checkbox
    13. In IPv6 Mode menu, select one:
      • No IPv6 Address radio button
      • Address Auto Configuration radio button
      • Enter IPv6 details: 
        • (optional) IPv6 DNS Server
        • IPv6 DNS Search (defines a domain name for DNS lookups)
        • IPv6 Default Route Metric
        • Ignore the obtained IPv6 Default Gateway checkbox
        • Ignore the obtained DNS server checkbox
    14. In Mobile Broadband Connection menu:
      1. Enter SIM-1 Phone Number
      2. On SIM-1 APN Configuration menu, select one:
        • Automatic radio button
        • If the Manual radio button is selected (expands dialog), enter details:
      3. Enter SIM-1 details:
        • SIM-1 User name (user name to unlock the SIM)
        • SIM-1 Password
        • SIM-1 Access Point Name (APN)
        • Enter SIM-1 Personal Identification Number (PIN)
        • SIM-1 MTU (bytes – can be set to ‘auto’ = 1500 bytes)
        • Enable the Data Usage Monitoring checkbox (monitors the data usage and signal strength at regular intervals and provides historical data). If selected (expands dialog): 
            • SIM-1 Data Limit Value (GB) (monthly data limit)
            • SIM-1 Data Warning (%) (percentage that triggers an event notification when reached)
            • SIM-1 Renew Day (day to reset accumulated data)
      4. If Enable IP Passthrough checkbox is selected (expands dialog):
        • Ethernet Connection drop-down, select one (selection varies depending on the device)
        • MAC Address (if blank, the system uses DHCP to get the device)
        • Port Intercepts (any ports that should NOT pass through the Nodegrid device)
        • If Enable Global Positioning System (GPS) checkbox is selected (expands dialog): 
          • Enter Polling Time (min).
          • On the GPS Antenna drop-down, select one (Shared GPS/Rx diversity(aux) antenna, Dedicated Active GPS antenna, Dedicated Passive GPS antenna).
    15. (if available) Select the Enable Second SIM card checkbox. Repeat entries for SIM-2 settings. There is a setting Active SIM card that can designate SIM-2 as the primary SIM card.
    16. Click Save.

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