modem shell : connects but fails to send traffic

[Brett]

Hi,

I was using the AWS-IOT example and all was working until it wasnt. In troubleshooting this, I loaded the modem shell example, to see if it was a network/connection issue and although it connects (I get an IP), I am unable to ping google.com (by name or IP).

I looked at nrfcloud.com and the sim appears to have enough data left, Used 2.79MB of the 10MB .  Its iBasis sim that came with the board.

Details of the ping are below, I was wondering who to contact for this?  Nordic or iBasis ?

Output:

*** Booting Zephyr OS build v2.6.0-rc1-ncs1  ***

MOSH version:       v1.6.0
MOSH build id:      custom
MOSH build variant: dev

Initializing modemlib...


mosh:~$ Initialized modemlib
Network registration status: searching
LTE cell changed: Cell ID: 136926477, Tracking area: 12306
Currently active system mode: LTE-M
RRC mode: Connected
PDN event: PDP context 0 activated
Network registration status: Connected - roaming
PSM parameter update: TAU: -1, Active time: -1 seconds
Modem config for system mode: LTE-M
Modem config for LTE preference: No preference, automatically selected by the modem
Currently active system mode: LTE-M
Modem FW version:      mfw_nrf9160_1.2.3
Operator PLMN:        "50501"
Current cell id:       136926477 (0x0829550D)
Current band:          28
Current rsrp:          40: -101dBm
Current snr:           31: 6dB
Mobile network time and date: 21/10/02,05:33:39+40
PDP context info 1:
  CID:                    0
  PDN ID:                 0
  PDP context active:     yes
  PDP type:               IP
  APN:                    ibasis.iot
  IPv4 MTU:               1430
  IPv4 address:           10.155.149.218
  IPv6 address:           ::
  IPv4 DNS address:       62.93.146.209, 216.168.184.184
  IPv6 DNS address:       ::, ::

ping -d www.google.com
Initiating ping to: www.google.com
RRC mode: Connected
getaddrinfo(dest) error: -11
Cannot resolve remote host

RRC mode: Idle
mosh:~$ ping 142.25
mosh:~$
mosh:~$ ping -d 142.250.66.228
Initiating ping to: 142.250.66.228
Source IP addr: 10.155.149.218
Destination IP addr: 142.250.66.228
RRC mode: Connected
Pinging 142.250.66.228 results: no response in given timeout 3000 msec
Pinging 142.250.66.228 results: no response in given timeout 3000 msec
Pinging 142.250.66.228 results: no response in given timeout 3000 msec
Pinging 142.250.66.228 results: no response in given timeout 3000 msec

Ping statistics for 142.250.66.228:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss)
Pinging DONE

regards

-brett

[Charlie]

Hi Brett,

It looks everything is fine before you start to use ping commands.

I am not sure if this is an issue due to the local LTE network or just related to a specific sim card or hardware. Do you have several nRF9160DK boards to test with? Are you able to update Modem firmware to the latest and test with the latest NCS v1.7.0?

Best regards,

Charlie

[Brett]

Hi Charlie,

Sorry for the spam :) dont know why I didnt think of this earlier....

I used the sim from my phone, and it all worked fine - so I gather its an issue with iBasis ?

LTE cell changed: Cell ID: 136926477, Tracking area: 12306
Currently active system mode: LTE-M
RRC mode: Connected
PDN event: PDP context 0 activated
Network registration status: Connected - home network
PSM parameter update: TAU: -1, Active time: -1 seconds
PDN event: PDP context 0 IPv6 up
Modem config for system mode: LTE-M
Modem config for LTE preference: No preference, automatically selected by the modem
Currently active system mode: LTE-M
Modem FW version:      mfw_nrf9160_1.3.0
Operator full name:   "Telstra #LetsVaxx"
Operator short name:  "Telstra@"
Operator PLMN:        "50501"
Current cell id:       136926477 (0x0829550D)
Current band:          28
Current rsrp:          44: -97dBm
Current snr:           29: 4dB
Mobile network time and date: 21/10/04,12:26:15+44
PDP context info 1:
  CID:                    0
  PDN ID:                 0
  PDP context active:     yes
  PDP type:               IPV4V6
  APN:                    telstra.internet
  IPv4 MTU:               1500
  IPv4 address:           10.115.220.233
  IPv6 address:           2001:8004:2748:f59:801a:b250:e5fa:8ad0
  IPv4 DNS address:       101.168.244.100, 10.4.58.204
  IPv6 DNS address:       2001:8004:2d43:900::, 2001:8004:0:100:7:e1c0:0:14
mosh:~$
mosh:~$ ping -d www.google.com
Initiating ping to: www.google.com
Source IP addr: 10.115.220.233
Destination IP addr: 142.250.70.164
Pinging www.google.com results: time=0.079secs, payload sent: 0, payload received 0
Pinging www.google.com results: time=0.092secs, payload sent: 0, payload received 0
Pinging www.google.com results: time=0.098secs, payload sent: 0, payload received 0
Pinging www.google.com results: time=0.098secs, payload sent: 0, payload received 0

Ping statistics for www.google.com:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)
Approximate round trip times in milli-seconds:
    Minimum = 79ms, Maximum = 98ms, Average = 91ms
Pinging DONE
RRC mode: Idle
mosh:~$