You will need to upgrade the firewall to get higher speeds. See here for what's available at what speeds: https://documentation.meraki.com/?title=MX%2FDesign_and_Configure%2FArchitectures_and_Best_Practices%2FMX_Sizing_Guide_%26_Principles#Performance_Data Be mindful of the various throughput levels depending on what features are enabled. Also bee aware that if you can live with speeds less than your circuit max but still higher than currently and are co-term you can upgrade to an MX67 with no license charge: https://documentation.meraki.com/Platform_Management/Product_Information/Licensing/Meraki_Co-Termination_Licensing_Overview#License_Conversion If you need full use of the circuit, you will have to pay for a new license for your chose hardware. Your meraki rep may be willing to soften the blow and give you some credit for your existing license, but you will need to talk to them.
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