Series 3: How do I configure data usage rules on a CradlePoint router?

Beverly McRae

If you are unsure of CradlePoint Series or Model number, please click here.

This article was written based on firmware version 5.0.0.

Things to Know Before Getting Started

  • This feature is only available on our series 3 routers: CTR35, MBR95, CBR400, CBR450, IBR600, IBR650, MBR1200B and MBR1400.
  • In order to take advantage of this feature you will need firmware version 3.5.0 or later. If you are not at this version, please updateFirmware Update Instructions.

What is  a Data Usage Rule?

A Data Usage rule attempts to track the amount of traffic used by the WAN Connection. This is useful for a cellular broadband connection with a data cap.  A Data Usage rule to helps prevent data overage charges.  Data Usage rules are not guaranteed to be 100% accurate.  Data Usage Rules provide an estimated usage of data. CradlePoint is not responsible for any overage charges.      

Before Getting Started:

Note:  Typically Data Usage volumes are written to the routers internal memory approximately every 15 minutes.  This means that if the router shuts down/reboots 13 minutes after the last save, all data used during that time will not be stored are accounted for in the Data Usage calculation when the router comes back on.  Data used by the modem, while not plugged into the router, is not reflected in the router Data Usage estimate.


  1. Log into the router’s setup page (login instructions).
  2. If you see a button in the top left corner of the screen that says Basic Mode click on it to change to Advanced Mode. (If you don’t see this button, ignore this step).                                                                                     User-added image
  3. Click the Internet tab then select Data Usage.
  4. Make sure Enable data usage is checked                                                                    User-added image
  5. In the Data Usage Rule section click Add.
  6. Name the rule.
  7. In the Wan Selection select the name of the USB Modem (or “Ethernet: blue” if you want to monitor data usage for a DSL/Cable/Satellite/T1 connection).                                                                                             User-added image
  8. Under the Assigned usage in MB enter the maximum data volume to be used before the router takes action (the action will be chosen at a later step).  Typically, it’s best to set the maximum slightly lower than the data cap.  Data caps are usually given in Gigabytes.  1024MB = 1GB.
  9. Make sure Rule Enabled is checked then click Next.
  10. The Cycle Type should be set according to your billing plan with your ISP.                                                                                 User-added image
  11. Cycle Start date should correspond with the billing period start day each month.
  12. Select the router action from the following options:
  • Shutdown WAN on Cap:  The router will shut down the internet connection when the cap specified at step 8 is reached.  When the cycle start date is reached, the connection will re-enable.
  • Send alert on Cap:  The router will send you an e-mail warning you that the cap has been reached. This requires configuration of SMTP mail settings, SMTP Instructions.
  • Custom Alert:  This option will generate an e-mail message when the specified percent of usage has been reached.
     14.  Click “Submit”.The page now shows a graph and numbers displaying how much data has been used.  This page can be accessed to periodically check the modems data usage.

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