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    LTE - Modem Works But Cannot Ping

    Cellular Modems
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    • T
      tom admin
      last edited by tom 18 Aug 2021, 17:13 18 Aug 2021, 17:02

      @vmassague Are you using the LTE V2 Add-on or Stand Alone? And you're using the Sierra 7607 modem correct?

      V 1 Reply Last reply 18 Aug 2021, 17:39 Reply Quote 0
      • D
        derrick0799 @tom
        last edited by 18 Aug 2021, 17:21

        @tom, I am using the add-on

        T 1 Reply Last reply 18 Aug 2021, 17:58 Reply Quote 0
        • V
          vmassague @tom
          last edited by 18 Aug 2021, 17:39

          @tom I'm using the Add-on also and I'm using the Sierra 7607

          T 1 Reply Last reply 18 Aug 2021, 17:58 Reply Quote 0
          • T
            tom admin @derrick0799
            last edited by 18 Aug 2021, 17:58

            @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?

            D 2 Replies Last reply 18 Aug 2021, 18:23 Reply Quote 0
            • T
              tom admin @vmassague
              last edited by 18 Aug 2021, 17:58

              @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
              • D
                derrick0799 @tom
                last edited by 18 Aug 2021, 18:23

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

                T 1 Reply Last reply 18 Aug 2021, 19:40 Reply Quote 0
                • T
                  tom admin @derrick0799
                  last edited by 18 Aug 2021, 19:40

                  @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

                  D 1 Reply Last reply 18 Aug 2021, 22:49 Reply Quote 0
                  • D
                    derrick0799 @tom
                    last edited by 18 Aug 2021, 22:42

                    @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
                    • D
                      derrick0799 @tom
                      last edited by 18 Aug 2021, 22:49

                      @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

                      T 1 Reply Last reply 18 Aug 2021, 22:51 Reply Quote 0
                      • T
                        tom admin
                        last edited by 18 Aug 2021, 22:51

                        @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.

                        D 1 Reply Last reply 18 Aug 2021, 23:05 Reply Quote 0
                        • T
                          tom admin @derrick0799
                          last edited by 18 Aug 2021, 22:51

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

                          1 Reply Last reply Reply Quote 0
                          • D
                            derrick0799 @tom
                            last edited by 18 Aug 2021, 23:05

                            @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
                            • T
                              tom admin
                              last edited by 18 Aug 2021, 23:07

                              @derrick0799 What does ifconfig show?

                              D 1 Reply Last reply 18 Aug 2021, 23:08 Reply Quote 0
                              • D
                                derrick0799 @tom
                                last edited by 18 Aug 2021, 23:08

                                @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
                                • T
                                  tom admin
                                  last edited by 18 Aug 2021, 23:24

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

                                  1 Reply Last reply Reply Quote 0
                                  • T
                                    tom admin
                                    last edited by 18 Aug 2021, 23:28

                                    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)
                                    
                                    D 2 Replies Last reply 18 Aug 2021, 23:32 Reply Quote 0
                                    • D
                                      derrick0799 @tom
                                      last edited by 18 Aug 2021, 23:32

                                      @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
                                      • D
                                        derrick0799 @tom
                                        last edited by 18 Aug 2021, 23:35

                                        @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
                                        • T
                                          tom admin
                                          last edited by 18 Aug 2021, 23:36

                                          @derrick0799 Great to hear!

                                          1 Reply Last reply Reply Quote 0
                                          • V
                                            vmassague
                                            last edited by 19 Aug 2021, 08:15

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

                                            T 1 Reply Last reply 20 Aug 2021, 17:51 Reply Quote 0
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