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====== Lorafwd Instance Manager  ======

<note important>**This functionnality is only available for Keros version 5.5.1 and above**</note>

This tool allows the create multiple instances of packet forwarder to connect a gateway to multiple LNS.

===== Features =====
Following features are available in ''lorafwd_instance_manager'' tool:

  *  Add a new instance of lorafwd (''add <instance_name>'')
  *  Delete an instance of lorafwd (''delete <instance_name>'')
  *  Check if an instance exists   (''check <instance_name>'')
  *  List all added instances      (''list'')

 
Only UDP/GWMP packet forwarder instances can be created but they can be used at the same time as a [[basic_station_forwarder|Kerlink Basic Station Packet forwarder]].


<note important>When using the multi-packet forwarder feature, usage of netid filtering is highly recommended to avoid downlink collision.

**Note also that the last instance of lorafwd will define the radio parameters of your gateway**</note>



===== How to use lorafwd_instance_manager =====
==== Creation of the instance ====
If you want to connect your gateway to a second LNS, you will need to create a new instance of lorafwd. To do this, use the following command:
<code>lorafwd_instance_manager add second_instance</code>
<note> In the example the instance is named "second_instance" but you can name it as you like.</note>

It will create all the files needed for its configuration.

**List of generated files:** <hidden>
<code bash>
/
|-- etc
|   |-- lorafwd_second_instance.toml
|   |-- default
|   |   `-- lorafwd_second_instance
|   |-- init.d
|   |   `-- lorafwd_second_instance
|   |-- monit.d
|   |   `-- lorafwd_second_instance
|   |-- rcK.d
|   |   `-- K52lorafwd_second_instance -> /etc/init.d/lorafwd_second_instance
|   |-- rcU.d
|   |   `-- S51lorafwd_second_instance -> /etc/init.d/lorafwd_second_instance
|   |-- rsyslog.d
|   |   `-- lorafwd_second_instance
|   `-- sysupgrade.d
|       `-- lorafwd_second_instance.conf
|-- run
|   `-- lora
|       `-- lorafwd_second_instance.pid # Created each time it is started
|-- tmp
|   `-- lorafwd_second_instance_version # Created each time it is started
|-- usr
|   `-- sbin
|       `-- lorafwd_second_instance -> /usr/sbin/lorafwd
`-- var
    `-- lib
        `-- lorafwd_second_instance
            `-- database.sqlite # Created at first start
</code>
</hidden>

==== Configuration of the instance ====
Then, to configure the new instance, you will need to use the [[wiki:keros_custo:keros_applications_configuration|klk_apps_config]] as follow:

<code>klk_apps_config --activate-lorafwd -i second_instance --lns-server second_instance.url --lns-dport 1700 --lns-uport 1700</code>

<note>After //--lns-server --lns-dport --lns-uport// enter your own informations according to [[wiki:keros_custo:keros_applications_configuration|klk_apps_config]] parameters</note>

===== Logs =====


All lorafwd instances will write to the same log file ''/var/log/lora.log'', and are distinguished by their names, for example:

<code>
2021-05-20T14:17:11.588309+00:00 klk-wifc-03001D lorad[10784]: <6> Sent 1 uplink message
2021-05-20T14:17:11.631126+00:00 klk-wifc-03001D lorafwd_foo[11880]: <6> Heartbeat (F938) sent
2021-05-20T14:17:11.633762+00:00 klk-wifc-03001D lorafwd_foo[11880]: <6> Heartbeat (F938) acknowledged in 2.6289 ms
2021-05-20T14:17:13.446644+00:00 klk-wifc-03001D lorafwd[11552]: <6> Heartbeat (9FC3) sent
2021-05-20T14:17:13.449302+00:00 klk-wifc-03001D lorafwd[11552]: <6> Heartbeat (9FC3) acknowledged in 2.6239 ms
2021-05-20T14:17:14.179913+00:00 klk-wifc-03001D lorafwd[11552]: <6> Received uplink message: 
2021-05-20T14:17:14.180028+00:00 klk-wifc-03001D lorafwd[11552]: <6> | lora uplink (1F70167D), payload 25 B, channel 868.1 MHz, crc ok, bw 125 kHz, sf 7, cr 4/5
2021-05-20T14:17:14.180093+00:00 klk-wifc-03001D lorafwd[11552]: <6> | Unconfirmed Data Up, DevAddr 00430024, FCnt 467, FPort 25
2021-05-20T14:17:14.180139+00:00 klk-wifc-03001D lorafwd[11552]: <6> |  - radio (00000105)
2021-05-20T14:17:14.180233+00:00 klk-wifc-03001D lorafwd[11552]: <6> |   - demodulator counter 3502620444, UTC time 2021-05-20T14:17:14.173866Z, rssi -64 dB, snr 7.5< 10 <12.5 dB
2021-05-20T14:17:14.181910+00:00 klk-wifc-03001D lorafwd[11552]: <6> Uplink message (ABD8) sent
2021-05-20T14:17:14.183471+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> Received uplink message: 
2021-05-20T14:17:14.183584+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> | lora uplink (1F70167D), payload 25 B, channel 868.1 MHz, crc ok, bw 125 kHz, sf 7, cr 4/5
2021-05-20T14:17:14.183651+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> | Unconfirmed Data Up, DevAddr 00430024, FCnt 467, FPort 25
2021-05-20T14:17:14.183695+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> |  - radio (00000105)
2021-05-20T14:17:14.183786+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> |   - demodulator counter 3502620444, UTC time 2021-05-20T14:17:14.173866Z, rssi -64 dB, snr 7.5< 10 <12.5 dB
2021-05-20T14:17:14.185793+00:00 klk-wifc-03001D lorafwd[11552]: <6> Uplink message (ABD8) acknowledged in 3.85701 ms
2021-05-20T14:17:14.186798+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> Uplink message (FB49) sent
2021-05-20T14:17:14.187286+00:00 klk-wifc-03001D lorad[10784]: <6> Sent 1 uplink message
2021-05-20T14:17:14.189619+00:00 klk-wifc-03001D lorafwd_second_instance[11880]: <6> Uplink message (FB49) acknowledged in 2.80792 ms
</code>
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