Local Agent - ZyXEL Communications NR/FWA Outdoor Series User Manual

Table 102 Maintenance > TR-369 Local Agent > MQTT: Add or Edit (continued)
LABEL
Transport
Protocol
QoS
Client ID
Local
Certificate Used
by MQTT Client
Username
Password
Protocol Version
OK
Cancel
28.4 TR-369 Local Agent
Click Maintenance > TR-369 Local Agent > Agent to open the following screen. Use this screen to set the
Zyxel Device as an agent, select a cellular WAN, and configure the Message Transfer Protocol (MTP) to
receive USP messages from controllers.
Chapter 28 TR-369
DESCRIPTION
Select the transport protocol (TCP/IP or TLS) for the Zyxel Device to send messages. Select TLS is
you want MTP message encryption using a certificate in TLS. Make sure the broker also supports
TLS.
Select the Quality of Service transmission for messages sent from the Zyxel Device to the MQTT
broker. Make sure the same settings were configured on the broker when you registered.
0 – At most once. When a message is sent, there is no guarantee that the message is delivered.
The message may not be sent or sent just once.
1 – At least once. When a message is sent, the receiver will confirm that the message has been
received. The message will be resent multiple times until confirmation is received. If the sender
does not receive a response after a certain period of time, it will assume that the message was
not delivered and resend the message. However, if the agent receives a message, but the
response is missed due to a connection failure, the receiver will wrongly think that the sender has
not received the reply message and send it again, resulting in the receiver receiving the same
message repeatedly.
2 – Exactly once. This is used to avoid the receiver receiving the same message repeatedly.
When a message is sent, the receiver will confirm that the message has been received and it will
also send the same identification code that the sender sent. This is to make sure the reply
message will not be sent again.
Enter the unique Client ID of the MQTT client connecting to the MQTT broker. Enter between 1
and 23 UTF-8 encoded case-sensitive alpha-numeric characters. The MQTT broker determines
the characters allowed for the Client ID.
Select the certificate if the Transport Protocol is using TLS. First, upload the certificate to the Zyxel
Device in Security > Certificates > Local Certificates.
Enter the user name if the MQTT broker requires it for login.
Enter 0-255 printable characters including special characters and spaces.
Enter the password if the MQTT broker requires it for login.
Enter 0-255 printable characters including special characters and spaces.
The Protocol Version must be the same version that you used to register with the broker. Select
3.1.1 or 5.0.
Click OK to save your changes.
Click Cancel to restore the screen's last saved settings.
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