How to find Hardware EUI of the concentrator?

hitheshkaranth · October 2, 2018, 6:15am

Hi,
Well Im in a situation where I need to handle 4 different concentrators(RAK831) connected to 4 backend beaglebone black each flashed with same Image as the first beaglebone (clones) (and the first gateway works perfectly). So my question is do I need to change only the hardware EUI in lora-pkt-fwd local_conf.json if so how can I get Hardware EUI manually? If not should I rebuild entire steps which took the first beaglebone to establish as a gateway ?

brocaar · October 2, 2018, 7:27am

See:

github.com

Lora-net/packet_forwarder/blob/master/lora_pkt_fwd/update_gwid.sh

#!/bin/sh

# This script is a helper to update the Gateway_ID field of given
# JSON configuration file, as a EUI-64 address generated from the 48-bits MAC
# address of the device it is run from.
#
# Usage examples:
#       ./update_gwid.sh ./local_conf.json

iot_sk_update_gwid() {
    # get gateway ID from its MAC address to generate an EUI-64 address
    GWID_MIDFIX="FFFE"
    GWID_BEGIN=$(ip link show eth0 | awk '/ether/ {print $2}' | awk -F\: '{print $1$2$3}')
    GWID_END=$(ip link show eth0 | awk '/ether/ {print $2}' | awk -F\: '{print $4$5$6}')

    # replace last 8 digits of default gateway ID by actual GWID, in given JSON configuration file
    sed -i 's/\(^\s*"gateway_ID":\s*"\).\{16\}"\s*\(,\?\).*$/\1'${GWID_BEGIN}${GWID_MIDFIX}${GWID_END}'"\2/' $1

    echo "Gateway_ID set to "$GWID_BEGIN$GWID_MIDFIX$GWID_END" in file "$1
}

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hitheshkaranth · October 2, 2018, 10:11am

@brocaar
so i just need to run this and Im good ? No other modification is required consideing Im cloning the OS image right ?

brocaar · October 2, 2018, 10:37am

Try it and see if it solves your issue

hitheshkaranth · October 5, 2018, 5:06pm

Dear @brocaar

Thanks a lot that solved it.