ModalAI Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    LTE - Modem Works But Cannot Ping

    Cellular Modems
    4
    27
    1787
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • tomT
      tom admin @derrick0799
      last edited by

      @derrick0799 Can you disable the voxl-modem service from running with systemctl disable voxl-modem and reboot your voxl.

      Then run voxl-modem-start.sh manually so I can see the full output?

      derrick0799D 2 Replies Last reply Reply Quote 0
      • tomT
        tom admin @vmassague
        last edited by

        @vmassague Can you disable the voxl-modem service from running with systemctl disable voxl-modem and reboot your voxl.

        Then run voxl-modem-start.sh manually so I can see the full output?

        1 Reply Last reply Reply Quote 0
        • derrick0799D
          derrick0799 @tom
          last edited by

          @tom, sure. It will be later this evening before I am able to do so.

          tomT 1 Reply Last reply Reply Quote 0
          • tomT
            tom admin @derrick0799
            last edited by

            @derrick0799 @vmassague Another thing for both of you to check is to see if the APN is indeed set correctly, you can do this with the following command:

            / # echo -ne "AT+CGDCONT?\r" | busybox microcom -t 1000 /dev/ttyUSB2
AT+CGDCONT?
+CGDCONT: 1,"IP","h2g2","0.0.0.0",0,0,0,0
+CGDCONT: 2,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 3,"IPV4V6","sos","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1

            In this case, my APN is h2g2 for GoogleFi

            derrick0799D 1 Reply Last reply Reply Quote 0
            • derrick0799D
              derrick0799 @tom
              last edited by

              @tom I ran 'systemctl disable voxl-modem' and reboot voxl then...
              yocto:~$ voxl-modem-start.sh

              VOXL detected...

              Initializing v2 modem...

              Waiting for ttyUSB2...
              ttyUSB2

              Initalizing cellular connection...
              Configuring GPIO to pull modem out of reset
              Waiting for the diag serial port(/dev/ttyUSB0) to activate
              checking for serial port: /dev/ttyUSB0
              /dev/ttyUSB0 is available
              Verifying existence of QMI port(/dev/cdc-wdm0)
              checking for serial port: /dev/cdc-wdm0
              /dev/cdc-wdm0 is available
              Unstick QMI countdown: 10
              Unstick QMI countdown: 9
              Unstick QMI countdown: 8
              Unstick QMI countdown: 7
              Unstick QMI countdown: 6
              "12253379280"
              Checking for system registration
              Attempt: 1
              {
              "registration": "registered",
              "plmn_mcc": 311,
              "plmn_mnc": 480,
              "plmn_description": "Verizon ",
              "roaming": false
              }

              response: [{
              "registration": "registered",
              "plmn_mcc": 311,
              "plmn_mnc": 480,
              "plmn_description": "Verizon ",
              "roaming": false
              }
              ]
              Successfully registered with the network
              Starting network
              "No effect"
              Checking connection status
              Connection is up
              Using the DHCP client to get an IP address
              udhcpc (v1.23.2) started
              Sending discover...
              Sending select for 100.68.239.240...
              Lease of 100.68.239.240 obtained, lease time 7200

              1 Reply Last reply Reply Quote 0
              • derrick0799D
                derrick0799 @tom
                last edited by

                @tom said in LTE - Modem Works But Cannot Ping:

                echo -ne "AT+CGDCONT?\r" | busybox microcom -t 1000 /dev/ttyUSB2

                yocto:~$ echo -ne "AT+CGDCONT?\r" | busybox microcom -t 1000 /dev/ttyUSB2
                AT+CGDCONT?
                +CGDCONT: 1,"IP","vzwinternet","0.0.0.0",0,0,0,0
                +CGDCONT: 2,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
                +CGDCONT: 3,"IPV4V6","sos","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1

                OK

                tomT 1 Reply Last reply Reply Quote 0
                • tomT
                  tom admin
                  last edited by

                  @derrick0799 Do you have WiFi connected? If so, try disabling it with ifconfig wlan0 down and seeing if you can then ping.

                  Also, can I see the output of route -n?

                  Same for you @vmassague something to try.

                  derrick0799D 1 Reply Last reply Reply Quote 0
                  • tomT
                    tom admin @derrick0799
                    last edited by

                    @derrick0799 Looks like APN is setting correctly so that's good

                    1 Reply Last reply Reply Quote 0
                    • derrick0799D
                      derrick0799 @tom
                      last edited by

                      @tom after disabling wlan0,
                      / # ping 8.8.8.8
                      connect: Network is unreachable

                      / # route -n
                      Kernel IP routing table
                      Destination Gateway Genmask Flags Metric Ref Use Iface
                      172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
                      / #

                      1 Reply Last reply Reply Quote 0
                      • tomT
                        tom admin
                        last edited by

                        @derrick0799 What does ifconfig show?

                        derrick0799D 1 Reply Last reply Reply Quote 0
                        • derrick0799D
                          derrick0799 @tom
                          last edited by

                          @tom
                          / # ifconfig
                          docker0 Link encap:Ethernet HWaddr 02:42:77:DF:4E:80
                          inet addr:172.17.0.1 Bcast:0.0.0.0 Mask:255.255.0.0
                          inet6 addr: fe80::42:77ff:fedf:4e80/64 Scope:Link
                          UP BROADCAST MULTICAST MTU:1500 Metric:1
                          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
                          TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
                          collisions:0 txqueuelen:0
                          RX bytes:0 (0.0 B) TX bytes:140 (140.0 B)

                          lo Link encap:Local Loopback
                          inet addr:127.0.0.1 Mask:255.0.0.0
                          inet6 addr: ::1/128 Scope:Host
                          UP LOOPBACK RUNNING MTU:65536 Metric:1
                          RX packets:609376 errors:0 dropped:0 overruns:0 frame:0
                          TX packets:609376 errors:0 dropped:0 overruns:0 carrier:0
                          collisions:0 txqueuelen:0
                          RX bytes:65142775 (62.1 MiB) TX bytes:65142775 (62.1 MiB)

                          / #

                          1 Reply Last reply Reply Quote 0
                          • tomT
                            tom admin
                            last edited by

                            @derrick0799 Is that the output after running voxl-modem-start.sh?

                            1 Reply Last reply Reply Quote 0
                            • tomT
                              tom admin
                              last edited by

                              At that point, you should be seeing something similar to:

                              wwan0     Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          inet addr:30.60.23.115  P-t-P:30.60.23.115  Mask:255.255.255.248
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:33 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3214 (3.1 KiB)  TX bytes:4672 (4.5 KiB)
                              derrick0799D 2 Replies Last reply Reply Quote 0
                              • derrick0799D
                                derrick0799 @tom
                                last edited by

                                @tom I think my problem was that the wifi was connected when I ran the voxl-modem-start.sh
                                Now that I am connect with adb everything started working when I re-ran voxl-modem-start.sh. It is pinging as it should.

                                1 Reply Last reply Reply Quote 0
                                • derrick0799D
                                  derrick0799 @tom
                                  last edited by

                                  @tom
                                  / # ifconfig
                                  docker0 Link encap:Ethernet HWaddr 02:42:77:DF:4E:80
                                  inet addr:172.17.0.1 Bcast:0.0.0.0 Mask:255.255.0.0
                                  inet6 addr: fe80::42:77ff:fedf:4e80/64 Scope:Link
                                  UP BROADCAST MULTICAST MTU:1500 Metric:1
                                  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
                                  TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
                                  collisions:0 txqueuelen:0
                                  RX bytes:0 (0.0 B) TX bytes:140 (140.0 B)

                                  lo Link encap:Local Loopback
                                  inet addr:127.0.0.1 Mask:255.0.0.0
                                  inet6 addr: ::1/128 Scope:Host
                                  UP LOOPBACK RUNNING MTU:65536 Metric:1
                                  RX packets:1472332 errors:0 dropped:0 overruns:0 frame:0
                                  TX packets:1472332 errors:0 dropped:0 overruns:0 carrier:0
                                  collisions:0 txqueuelen:0
                                  RX bytes:155328799 (148.1 MiB) TX bytes:155328799 (148.1 MiB)

                                  wwan0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
                                  inet addr:100.76.95.21 P-t-P:100.76.95.21 Mask:255.255.255.252
                                  UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
                                  RX packets:2 errors:0 dropped:0 overruns:0 frame:0
                                  TX packets:2713 errors:0 dropped:0 overruns:0 carrier:0
                                  collisions:0 txqueuelen:1000
                                  RX bytes:612 (612.0 B) TX bytes:1304344 (1.2 MiB)

                                  / # ping 8.8.8.8
                                  PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
                                  64 bytes from 8.8.8.8: icmp_req=1 ttl=113 time=34.3 ms
                                  64 bytes from 8.8.8.8: icmp_req=2 ttl=113 time=35.1 ms
                                  64 bytes from 8.8.8.8: icmp_req=3 ttl=113 time=34.0 ms
                                  64 bytes from 8.8.8.8: icmp_req=4 ttl=113 time=27.1 ms
                                  64 bytes from 8.8.8.8: icmp_req=5 ttl=113 time=31.1 ms
                                  64 bytes from 8.8.8.8: icmp_req=6 ttl=113 time=36.5 ms
                                  64 bytes from 8.8.8.8: icmp_req=7 ttl=113 time=24.0 ms

                                  Thanks @Tom

                                  1 Reply Last reply Reply Quote 0
                                  • tomT
                                    tom admin
                                    last edited by

                                    @derrick0799 Great to hear!

                                    1 Reply Last reply Reply Quote 0
                                    • vmassagueV
                                      vmassague
                                      last edited by

                                      Problem solved for me too! I think it was also the wlan0 being up. Thanks a lot for the support @tom

                                      tomT 1 Reply Last reply Reply Quote 0
                                      • tomT
                                        tom admin @vmassague
                                        last edited by

                                        @vmassague Awesome!

                                        1 Reply Last reply Reply Quote 0
                                        • wilkinsafW wilkinsaf referenced this topic on
                                        • First post
                                          Last post
                                        Powered by NodeBB | Contributors