Cisco Meraki Routers and Gateways: SIM Setup Guide

Meraki MG cellular gateways give an MX security appliance or any network a mobile uplink, managed from the Meraki Dashboard. A ThingSIM goes in the gateway, the APN is set in the Dashboard, and the gateway roams across the Irish networks to whichever is strongest on site.

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Setting up a ThingSIM in the Meraki Dashboard

The APN goes in Cellular Gateway → Cellular Gateways → the MG → Uplink → Configuration. Copy it from the SIM's page in the ThingSIM portal; there is no username or password.

  1. Activate the SIM in the ThingSIM portal, insert it in SIM1 and power the gateway.
  2. In the Meraki Dashboard go to Cellular Gateway → Cellular Gateways and select the MG.
  3. Open the Uplink tab, scroll to Configuration and click edit.
  4. Enter the APN from the portal with IP type IPv4 and Authentication None, leave the username and password blank, and save.
  5. If the gateway has never been online, set the same values on its local status page under Configure → Cellular Settings (override the SIM1 data session).
  6. The Uplink tab then shows the SIM connected, with carrier and signal.

Two SIMs for failover

MGs hold two SIMs, one active at a time. SIM1 is primary by default and SIM failover is switched on or off on the Uplink tab. On the MG52 each slot, including eSIM, is set as primary, secondary or not in use.

Checking it works

The Uplink tab in the Dashboard shows signal, carrier and usage over time; the local status page shows the same on site.

Cisco Meraki models that work with ThingSIM

Every model below takes a standard SIM or eSIM and works with ThingSIM. Older models no longer sold are marked; plenty are still in service and work the same way.

MG Cellular Gateway

Cisco Meraki MG52 Works with ThingSIM

MG52

Failover router · dual SIM 5G SA · 2 SIM slots + eSIM Cloud-managed IP67 5G gateway for branch primary/campus WAN.
Cisco Meraki MG21 Works with ThingSIM

MG21

Failover router 4G LTE-A Cat 6 · 1 SIM slot Branch LTE failover for Meraki MX networks.
Cisco Meraki MG52E Works with ThingSIM

MG52E

Failover router · dual SIM 5G SA · 2 SIM slots + eSIM MG52 with external antennas.
Cisco Meraki MG41 Works with ThingSIM

MG41

Failover router · dual SIM 4G LTE-A Pro Cat 18 · 2 SIM slots Critical failover or primary LTE for branches, pop-ups, emergency services.
Cisco Meraki MG21E Works with ThingSIM

MG21E

Failover router 4G LTE-A Cat 6 · 1 SIM slot MG21 with external antennas.
Cisco Meraki MG41E Works with ThingSIM

MG41E

Failover router · dual SIM 4G LTE-A Pro Cat 18 · 2 SIM slots MG41 with external antennas.
Cisco Meraki MG51 Works with ThingSIM No longer sold

MG51

Failover router · dual SIM 5G NSA · 2 SIM slots Cloud-managed 5G gateway for branch primary WAN.
Cisco Meraki MG51E Works with ThingSIM No longer sold

MG51E

Failover router · dual SIM 5G NSA · 2 SIM slots MG51 with external antennas.

Questions people ask

Does a ThingSIM work in a Meraki MG41?

Yes. Insert the SIM, set the APN from the portal for that SIM slot in the Meraki Dashboard, and the gateway connects as a cellular uplink on the strongest of Vodafone, Three and eir.

Which plan suits a Meraki backup uplink?

A gateway that only carries traffic during an outage usually fits in 1 GB or 5 GB a month. 5 GB on Ireland multi-network is €8.99 a month.