[BG95]Cannot ping to tcp server but tcp client can establish connection to server

IoT Modules LPWA Module
1

Hi, i can successfully connect to tcp server(but not stable) using QIOPEN but i cannot ping to tcp server using QPING. I’m sharing all AT history below.

ATI

Quectel
BG95-M3
Revision: BG95M3LAR02A03

OK
AT+QGMR

BG95M3LAR02A03_01.003.01.003

OK
AT+cgreg?

+CGREG: 0,1

OK
AT+creg?

+CREG: 0,1

OK
AT+QICSGP=1,1, “tarim”,"","",1

OK

AT+CGDCONT?

+CGDCONT: 1,“IP”,“tarim”,“0.0.0.0”,0,0,0
+CGDCONT: 2,“IP”,“internet”,“0.0.0.0”,0,0,0

OK

AT+QIACT?

OK
AT+QIACT=1

OK
AT+QIACT?

+QIACT: 1,1,1,“10.164.32.23”

OK
AT+qeng=“servingcell”

+QENG: “servingcell”,“NOCONN”,“GSM”,286,01,2E9E,A505,12,45,-,-83,255,255,0,26,26,1,-,-,-,-,-,-,-,-,-,"-"

OK
AT+CGACT?

+CGACT: 1,1
+CGACT: 2,0

OK
AT+qping=1",40.85.96.208"

ERROR
AT+qping=1,“40.85.96.208”

OK

+QPING: 569

+QPING: 569

+QPING: 569

+QPING: 569

+QPING: 569

AT+QIOPEN=1,2,“TCP”,“40.85.96.208”,80,0,0

OK

+QIOPEN: 2,0
AT+QICLOSE=2,2

OK
AT+QIOPEN=1,2,“TCP”,“40.85.96.208”,80,0,0

OK

+QIOPEN: 2,0
AT+QISENDEX=2,“3132333435”

SEND OK
AT+QISENDEX=2,“3132333435”

SEND OK
AT+QISEND=2,0

+QISEND: 10,10,0

OK
AT+QICLOSE=2,2

OK
AT+qping=1,“40.85.96.208”

OK

+QPING: 569

+QPING: 569

+QPING: 569

+QPING: 569

+QPING: 569

2

Does 40.85.96.208 support ICMP Ping?
Another reason not getting a response to ICMP ping may be that some network elements (firewall etc.) block ICMP or even that, the network doesn’t support ICMP at all.

3

We discussed this with quectel. There is a problem with BG95. They will find the problem.

I write for those who have this problem.

4

Okay, very good! Waiting to hear what was the issue because recently we have seen so many cases with some issues with Ping. Mostly those have been configuration issues in the network, routing, etc. but the module problems I haven’t even thought about.