With the release of ALEOS 4.7.0 ( Full ALEOS 4.7.0 Release Notes ) we are introducing a new protocol, Lightweight M2M (LWM2M), which manages the communications between AirLink gateways and ALMS. This change from MSCI (our legacy protocol) to LWM2M brings a number of benefits, which are outlined in a Technical Bulletin that you can access on the Source.

As an ALMS user that has RV50, GX450 and/or ES450 devices in your account, we wanted to make sure you are aware of the implications of the upgrade to LWM2M, and are familiar with some of the changes that may be required to your infrastructure prior to upgrading. There are three primary areas of impact to be aware of:

  1. Updates to your Firewall Rules
  2. New Versions of Templates, Reports and Alert Rules in ALMS
  3. Effect on Data Consumption

Updates to your Firewall Rules

When you upgrade existing devices to ALEOS 4.7.0, the device will first try to communicate with ALMS via LWM2M, but will fall back to MSCI if it is unable to communicate using the new protocol. To ensure that you can leverage the benefits of LWM2M, you need to update your firewall rules to allow LWM2M to communicate both outbound toward the ALMS IP addresses, and inbound from the ALMS IP addresses on the following ports:

  • UDP/5684
  • UDP/5686

For more information, please refer to the ALMS documentation.


Note: New devices from the factory that ship with 4.7.0 installed will use LWM2M as the default, and will not be set to “LWM2M with fallback to MSCI”. This is a new setting within ALEOS, and one that you can set if you require the communication to be on a specific protocol.

New Versions of Templates, Reports and Alert Rules in ALMS

Within ALMS, the versions of the firmware that are on the different protocols (MSCI, LWM2M) get treated as different versions of the firmware. The implication of this is that you will need to have separate versions of Templates, Reports and Alert Rules in ALMS if you have devices communicating over both LWM2M and MSCI with ALMS.

To limit the impact of this change, we suggest that you upgrade all devices to LWM2M as soon as possible, and have all devices configured consistently. This will limit the segregation within your account. To ease the transition we have created copies of all of your Templates, Reports and Alert Rules that you can apply to your devices once you have upgraded them to ALEOS 4.7.0 with LWM2M. This should make the transition to the new firmware easier for ALMS users.

Effect on Data Consumption

One of the benefits of LWM2M is that it slightly reduces the amount of data that is sent in the Heartbeat and Default Status Report communications. For more information, you can reference the details in the ALMS online documentation. http://source.sierrawireless.com/airvantage/alms/reference/monitor/howtos/statusreport/


If you need assistance with this process, please contact USAT:

For consultation on your next M2M / IoT project contact a USAT Representative

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