Configure LTE Connections

For supported software information, click here.

You can configure Long-Term Evolution (LTE) wireless broadband services or 5G services on devices that support LTE and 5G. LTE or 5G wireless functionality is useful when a branch does not have a wired connection to the internet.

An access point name (APN) establishes a connection to the gateway between the carrier's network and the internet. Your service provider may require a specific setting for the connection, and you can enter these APN details manually.

To configure LTE or 5G settings and update APN settings:

1. Click Configure in the left menu bar to open the Configure dashboard.
2. Hover over the device in the honeycomb and click Configure to open the site information window.
   
   
3. Click Next to open the Configuration > Network screen.
4. Click the LTE box to open the Network: LTE screen.
   
   
   
   If a 5G device is selected, the box displays 5G and opens the Network: 5G screen. 
   
   
5. Enter information for the following fields. 
   
   
    

   Fields	Description
   LTE	For LTE devices, select an existing LTE interface in the drop-down menu, or select +LTE to add an additional interface (up to four total). Note: For 5G devices, select an existing 5G interface in the drop-down list, or select +5G to add an additional interface.
   On/Off	Use the  toggle switch to switch an LTE interface on or off.
   Circuit Role	Select a circuit role: Primary—The interface that sends SD-WAN and DIA traffic. Hot Standby—For internet-bound traffic, a hot-standby circuit has a lower preference than the primary circuit. For SD-WAN traffic, a hot-standby circuit has the same default preference as the primary circuit. You can create rules to steer traffic on the interface. Titan sends DIA traffic to a hot-standby interface only if the primary interface is down. In hot-standby mode, LTE dynamic monitoring through WAN and LTE links for next-hop reachability or remote IP reachability to detect link failure is enabled. Monitoring of WAN and LTE links is enabled for both next-hop monitoring and remote IP monitoring with the IP address 8.8.8.8, with ICMP probes. Cold Standby—In cold-standby mode, LTE or WAN circuit and link monitoring is disabled. When you enable cold standby for LTE or any other interface, Titan monitors the primary or secondary path using IP SLA, and the LTE link state goes to Up only when the primary or secondary WAN interface is down.
   Gateway	Switch the  toggle to turn the LTE gateway configuration on or off. You must turn this feature on before the configuration is deployed.
   Transport	Select the transport domain for the LTE connection. You must select the transport domain before you deploy the device: Internet MPLS
   MTU (Required)	Enter the maximum transmission unit (MTU). Range: 72 through 9000 bytes
   Uplink Bandwidth	Enter the actual bandwidth purchased from the service provider. Uplink bandwidth refers to the traffic from the branch to the outside network.
   Downlink Bandwidth	Enter the actual bandwidth purchased from the service provider. Downlink bandwidth refers to the traffic from the outside network to the branch.
   Tunnel Selection	Choose the type of tunnel using the Tunnel Selection drop-down menu: Globe icon—Internet only. This is applicable only for transport domain. Hub icon—SD-WAN only Combined Globe and Hub icon—SD-WAN and Internet (DIA) Split Tunnel
   Network Address	The network address and gateway are set to Auto and cannot be changed.
   Name Servers (DNS)	The primary and secondary name servers are set to Auto and cannot be changed.
   Link Monitoring (Group of Fields)	Enable link monitoring to ensure that cold-standby LTE works with WAN as a primary interface and LTE as a secondary interface. If you enable next-hop monitoring on LTE, next-hop ICMP probes are initiated to install routes. However, many service providers block next-hop ICMP probes. In such cases, you can disable next-hop monitoring on LTE and add only a reachable IP address for monitoring (for example, 8.8.8.8). Note that automatic switchover to a secondary LTE or WAN does not work if all ICMP probes are blocked.
   Next Hop	Click the toggle to enable dynamic link monitoring for next-hop reachability.
   Remote IP	Enter a remote IP address for remote IP reachability through this LTE link to detect link failures.
   Interval	Enter the time interval between monitor packets, in seconds. Range: 1 through 60 seconds Default: 3 seconds
   Threshold	Enter the maximum number of monitor packet retransmissions before the node is marked as down. Range: 1 through 60 Default: 5
   APN	Click Manual to configure the APN manually. APN is set to Auto by default.   Access Point Name (APN)—Enter the access point name (APN) that you received from your service provider. PIN—For a USB modem that is locked with a PIN, enter a PIN number. Username—Enter the username provided by the service provider to use to access the wireless WAN. This username is used when a CDMA modem prompts for a username. Password—Enter the password provided by the service provider to access the wireless WAN. This password is used when a CDMA modem prompts for a password. Click Show/Hide to view the new password.

6. Click Advance Configuration (Radio Technology Settings) to configure advanced LTE or 5G settings, and then enter information for the following fields. Radio technology settings allow or block specific sets of bands associated with radio technologies on the modem. If you select any one band, the other two bands are disabled.
    
   
    

   Fields	Description
   LTE	Select the LTE modem bands: Allow Bands—Select the bands to allow for LTE. Block Bands—Select the bands to block for LTE. For example, to allow bands for LTE: Click Selected in LTE > Allow Bands. In the Select LTE Allow Bands popup window, select the bands to allow, and then click Continue.
   NR5G	Select the New Radio 5G (NR5G) bands:  Allow Bands—Select the bands to allow for NR5G. Block Bands—Select the bands to block for NR5G.
   WCDMA	Select the Wideband Code Division Multiple Access (WCDMA) bands: Allow Bands—Select the bands to allow for WCDMA . Block Bands—Select the bands to block for WCDMA.

7. Click Continue.
8. Click Save for a device that is not activated, or Publish for a device that is activated.  
9. Verify the settings from the Monitoring screen any time you change between Manual or Auto.