RaspberryPi3 + ic880a operation check

Gateways Raspberry Pi Gateways
1

I have a raspberrypi3 + IMST ic880a running.
I registered it in the TTN console -> status connect and seems to be working ok.

? What is the expected value “last seen =” ?

Lora node can send messages to Gateway and I can see them coming in the TTN application console.

Problem = I can’t SSH to my raspberryPI (worked well before launching Gateway) and ping answers are missed 2/3 of the times.
Seems that the raspberry is very busy.

Is this normal behavior ? Should I normally be able to SSH?
If not how can I debug this?

thx

2

if your gateway is seen by the backend (registered) this value will increase from 0 to 30 seconds
so every 30 seconds there is contact with the 'mothership

gwseen
gwseen1070×488 40.4 KB

3

OK thx,

But do you know that it’s normal that the raspberry is so busy that he can’t accept SSH and even misses a lot af ping answers?

I have no idea that this is normal behaviour or that something is not working optimal ?

4
  • what else have you running
  • which OS
  • which forwarder
5

The RPi should have plenty of cycles to respond to ping and handle ssh. Are you using wired or wireless connectivity?

6

Plugged again my wired network RJ45 on Raspberry and after a 1 min I could ping and SSh both on the wired as wireless interface.
Unplugging the wired interface made pinging + SSH again impossible ??
Strange because the gateway seems to be working fine

Any ideas?

7

Looks like default route and dns could be pointing to the wrong interface. Are wired and wireless interface in the same subnet?

8

Yes 192.168.2.7/24 and 192.168.2.12/24 with Default Gateway= 192.168.2.1

9

Have you tried booting the RPi without RJ45 connection to force it to use wireless lan for networking?

10

Here is a image of the problem when I work via Wifi

If I plug in the ethernet cable then everything becomes normal, I can connect via SSH and diagnose looks normal. -> linux command ‘top’ shows normal CPU 1,5% load

I can also ping the wireless interface without any problem <1ms.

If I unplug the ethernet, I can’t ping or SSH the wireless interface anymore.
But strangly the Gateway seems to remain working; accepting and forwarding lora node traffic to the TTN backend and the Gatway seems normal in TTN portal + refresh connection

Any clues ?
24

11

Sorry Guys, changed and took sameSD card but different RP3i hardware and now everythings seems to be working fine.

Thx for your responses !!!