What is the maximum transmission unit (MTU)?

In networking, maximum transmission unit (MTU) is a measurement representing the largest data packet that a network-connected device will accept.

BleuIO’s new firmware version 2.2.1 increased MTU size from 247 bytes to 512 bytes, which allows more data to fit into fewer packets. This generally results in a faster and more efficient transmission of data.

A new AT command AT+GETMAC is also added to the latest firmware. This will return the MAC address of the BleuIO dongle.

Added features:

• Increased MTU to 512 bytes.
• Added an MTU event that shows the negotiated MTU when connected or when changed: (MTU CHANGED: xxx) (using verbose mode: {779:”0000″,”evt”:{“action”:”mtu changed”,”mtu”:xxx}})
• Added new AT command: AT+GETMAC for getting bleuio mac address.

Bugfixes

• Fixed format errors of some messages when using verbose mode that doesn’t comform to JSON.

To find out more about the updates of the dongles new firmware 2.2.1, please visit our Getting Started Guide.