# 'ERROR: \[main\] failed to start the concentrator' on 'Kerlink LoRa IoT Station 868' **URL:** \ **Category:** Kerlink Gateways\ **Created:** [February 14, 2019, 5:53pm UTC](https://www.thethingsnetwork.org/forum/t/error-main-failed-to-start-the-concentrator-on-kerlink-lora-iot-station-868/22730 "2019-02-14T17:53:42Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![test\_lab2017](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/test_lab2017/32/20484_2.png) [@test\_lab2017](https://www.thethingsnetwork.org/forum/u/test_lab2017)\ **Post date:** [February 14, 2019, 5:53pm UTC](https://www.thethingsnetwork.org/forum/t/error-main-failed-to-start-the-concentrator-on-kerlink-lora-iot-station-868/22730/1 "2019-02-14T17:53:43Z")
Hello I have a visibility (not connected, not seen) problem with Kerlink LoRa IoT Station in the Gateways console on TTN and sending data from Lora devices. Kerlink version: > ``` > # get_version -u > KERNEL_VER=3.10.104-3.10.104-klk7 > PIC_VER=8.3 > BOOTSTRAP_VER="" > UBOOT_VER="U-Boot 2009.03-2009.03-klk1 (Jan 26 2018 - 12:04:27)" > SCRIPT_VER=v1.0 > INITRAMFS_VER=v1.3 > FILESYSTEM_VER=2016.05v1.10 > KNETD_VER="wirma2_v4.09 WAN_3.16 (Dec 23 2016-14:33:40)" > PROD_FW=wirmaV2_wirnet_v3.3 > # > > ``` I installed and configured The Things Network’s packet forwarder (dota\_thethingsnetwork\_v1.3\_EU.tar.gz) and produsb\_wirnet\_v3.1.zip (from [https://github.com/TheThingsNetwork/kerlink-station-firmware/tree/master/dota](https://github.com/TheThingsNetwork/kerlink-station-firmware/tree/master/dota)) by [https://www.thethingsnetwork.org/docs/gateways/kerlink/config.html](https://www.thethingsnetwork.org/docs/gateways/kerlink/config.html). On the TTN page in the Gateway console, you can not see that “Kerlink LoRa IoT Station” was connected. No data is sent. Also on port 1700 there is no data: tcpdump -AUq port 1700 The firewall in the / etc / sysconfig / network file has been disabled. (FIREWALL = no). Execute the script /mnt/fsuser-1/thethingsnetwork/poly-pkt-fwd.sh returns the following result: > ``` > # ./poly-pkt-fwd.sh > killall: poly_pkt_fwd: no process killed > Loading "Spectral scan" FPGA firmware ... > ERROR: lgw_fpga_program() did not return SUCCESS > ***Poly Packet Forwarder for Lora Gateway*** > Version: 2.1.0 > ***Lora concentrator HAL library version info*** > Version: 3.1.0; Options: native; > *** > INFO: Little endian host > INFO: found global configuration file global_conf.json, parsing it > INFO: global_conf.json does contain a JSON object named SX1301_conf, parsing SX1301 parame > ters > INFO: lorawan_public 1, clksrc 1 > INFO: Configuring TX LUT with 16 indexes > INFO: radio 0 enabled (type SX1257), center frequency 867500000, RSSI offset -166.000000, > tx enabled 1 > INFO: radio 1 enabled (type SX1257), center frequency 868500000, RSSI offset -166.000000, > tx enabled 0 > INFO: Lora multi-SF channel 0> radio 1, IF -400000 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 1> radio 1, IF -200000 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 2> radio 1, IF 0 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 3> radio 0, IF -400000 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 4> radio 0, IF -200000 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 5> radio 0, IF 0 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 6> radio 0, IF 200000 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora multi-SF channel 7> radio 0, IF 400000 Hz, 125 kHz bw, SF 7 to 12 > INFO: Lora std channel> radio 1, IF -200000 Hz, 250000 Hz bw, SF 7 > INFO: FSK channel> radio 1, IF 300000 Hz, 125000 Hz bw, 50000 bps datarate > INFO: global_conf.json does contain a JSON object named gateway_conf, parsing gateway para > meters > INFO: gateway MAC address is configured to 0000024B080E100A > INFO: server hostname or IP address is configured to "router.eu.thethings.network" > INFO: upstream port is configured to "1700" > INFO: downstream port is configured to "1700" > INFO: downstream keep-alive interval is configured to 10 seconds > INFO: statistics display interval is configured to 30 seconds > INFO: upstream PUSH_DATA time-out is configured to 100 ms > INFO: packets received with a valid CRC will be forwarded > INFO: packets received with a CRC error will NOT be forwarded > INFO: packets received with no CRC will NOT be forwarded > INFO: GPS serial port path is configured to "/dev/nmea" > INFO: GPS is disabled > INFO: Upstream data is enabled > INFO: Downstream data is enabled > INFO: Ghoststream data is disabled > INFO: Radiostream data is enabled > INFO: Statusstream data is enabled > INFO: Beacon is enabled > INFO: Monitor is enabled > INFO: found local configuration file local_conf.json, parsing it > INFO: redefined parameters will overwrite global parameters > INFO: local_conf.json does not contain a JSON object named SX1301_conf > INFO: local_conf.json does contain a JSON object named gateway_conf, parsing gateway param > eters > INFO: gateway MAC address is configured to 0000024B080E100A > INFO: server hostname or IP address is configured to "router.eu.thethings.network" > INFO: upstream port is configured to "1700" > INFO: downstream port is configured to "1700" > INFO: packets received with a valid CRC will be forwarded > INFO: packets received with a CRC error will NOT be forwarded > INFO: packets received with no CRC will be forwarded > INFO: GPS is enabled > INFO: Upstream data is enabled > INFO: Downstream data is enabled > INFO: Ghoststream data is disabled > INFO: Radiostream data is enabled > INFO: Statusstream data is enabled > INFO: Beacon is enabled > INFO: Monitor is enabled > INFO: [main] TTY port /dev/nmea open for GPS synchronization > INFO: [main] Starting the concentrator > ERROR: [main] failed to start the concentrator > > ``` There are two errors: > ERROR: lgw\_fpga\_program() did not return SUCCESS > ERROR: [main] failed to start the concentrator Is the error “ERROR: [main] failed to start the concentrator” is a problem through which Kerlink Gateway can not connect to TTN? How can this problem be solved to properly configure the device with TTN service? ---
**Author:** ![Ais](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/ais/32/25844_2.png) [@Ais](https://www.thethingsnetwork.org/forum/u/Ais)\ **Post date:** [February 27, 2019, 1:37pm UTC](https://www.thethingsnetwork.org/forum/t/error-main-failed-to-start-the-concentrator-on-kerlink-lora-iot-station-868/22730/2 "2019-02-27T13:37:04Z")
Hello I have the same problem is there anyone for help please ? I see all other disscution in the ttn for this problem, but never resolve it ---
**Author:** ![gruenstreifen\_ev](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/gruenstreifen_ev/32/25844_2.png) [@gruenstreifen\_ev](https://www.thethingsnetwork.org/forum/u/gruenstreifen_ev)\ **Post date:** [June 21, 2019, 4:36pm UTC](https://www.thethingsnetwork.org/forum/t/error-main-failed-to-start-the-concentrator-on-kerlink-lora-iot-station-868/22730/3 "2019-06-21T16:36:31Z")
Same here. Any solutions?