I am using GSM LTE Modem from Quectel EC21.
I am having problem pinging the device after it has successfully acquired the IP address. The modem works fine on Windows machine when I try to use dial up connection.
Below is the log and config file.
#define NUM_PPP 1 /* Max PPP sessions. */
#define PAP_SUPPORT 1 /* Set > 0 for PAP. */
#define CHAP_SUPPORT 1 /* Set > 0 for CHAP. */
#define VJ_SUPPORT 1 /* Set > 0 for VJ header compression. */
8250:tNET>0.0.0.0.255.255terface pp IPce
8250:tNET>ppp phase changed[0]: phase=0
8250:tNET>ppp_connect[0]: holdoff=0
8250:tNET>ppp phase changed[0]: phase=3
8250:tNET>pppos_connect: unit 0: connecting
8250:tNET>ppp_start[0]
8250:tNET>ppp phase changed[0]: phase=6
8250:tNET>pppos_send_config[0]: out_accm=FF FF FF FF
8250:tNET>ppp_send_config[0]
8250:tNET>pppos_recv_config[0]: in_accm=FF FF FF FF
8250:tNET>ppp_recv_config[0]
8250:tNET> CHAP=1 CHAP_MD5=1s:
8250:tNET>sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x448fe8ac> <pcomp> <accomp>]
8255:tNET>pppos_write[0]: len=24
8255:tNET>ppp_start[0]: finished
8265:TCP/IP>pppos_input[0]: got 99 bytes
8266:TCP/IP>rcvd [LCP ConfReq id=0x0 <asyncmap 0x0> <auth chap MD5> <magic 0x8ce22304> <pcomp> <accomp>]
8267:TCP/IP>sent [LCP ConfAck id=0x0 <asyncmap 0x0> <auth chap MD5> <magic 0x8ce22304> <pcomp> <accomp>]
8272:TCP/IP>pppos_write[0]: len=29
8273:TCP/IP>rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x448fe8ac> <pcomp> <accomp>]
8273:TCP/IP>netif_set_mtu[0]: mtu=1500
8273:TCP/IP>pppos_send_config[0]: out_accm=0 0 0 0
8274:TCP/IP>ppp_send_config[0]
8274:TCP/IP>pppos_recv_config[0]: in_accm=0 0 0 0
8274:TCP/IP>ppp_recv_config[0]
8274:TCP/IP>ppp phase changed[0]: phase=7
8278:TCP/IP>pppos_input[0]: got 63 bytes
8279:TCP/IP>rcvd [LCP DiscReq id=0x1 magic=0x8ce22304]
8280:TCP/IP>rcvd [CHAP Challenge id=0x1 <7c74c0e1f0fb5cc034cd7687a7c0de25>, name = "UMTS_CHAP_SRVR"]
8280:TCP/IP>No CHAP secret found for authenticating us to UMTS_CHAP_SRVR
8281:TCP/IP>sent [CHAP Response id=0x1 <6a749ee30ba8736e7be0a62fb618565f>, name = ""]
8284:TCP/IP>pppos_write[0]: len=25
8286:TCP/IP>pppos_input[0]: got 10 bytes
8286:TCP/IP>rcvd [CHAP Success id=0x1 ""]
8286:TCP/IP>CHAP authentication succeeded
8287:TCP/IP>CHAP authentication succeeded
8287:TCP/IP>ppp phase changed[0]: phase=9
8287:TCP/IP>sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0>]
8290:TCP/IP>pppos_write[0]: len=20
8307:TCP/IP>pppos_input[0]: got 26 bytes
8307:TCP/IP>rcvd [IPCP ConfReq id=0x0]
8308:TCP/IP>sent [IPCP ConfNak id=0x0 <addr 0.0.0.0>]
8310:TCP/IP>pppos_write[0]: len=14
8310:TCP/IP>rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
8311:TCP/IP>sent [IPCP ConfReq id=0x2 <addr 0.0.0.0>]
8313:TCP/IP>pppos_write[0]: len=14
8313:TCP/IP>pppos_input[0]: got 10 bytes
8314:TCP/IP>rcvd [IPCP ConfReq id=0x1]
8314:TCP/IP>sent [IPCP ConfAck id=0x1]
8315:TCP/IP>pppos_write[0]: len=8
8316:TCP/IP>pppos_input[0]: got 16 bytes
8316:TCP/IP>rcvd [IPCP ConfNak id=0x2 <addr 10.200.45.187>]
8317:TCP/IP>sent [IPCP ConfReq id=0x3 <addr 10.200.45.187>]
8319:TCP/IP>pppos_write[0]: len=14
8321:TCP/IP>pppos_input[0]: got 16 bytes
8321:TCP/IP>rcvd [IPCP ConfAck id=0x3 <addr 10.200.45.187>]
8322:TCP/IP>Could not determine remote IP address: defaulting to 10.64.64.64
8322:TCP/IP>sifvjcomp[0]: VJ compress enable=0 slot=0 max slot=0
8322:TCP/IP>netif: netmask of interface pp set to 255.255.255.255
8323:TCP/IP>netif: GW address of interface pp set to 10.64.64.64
8323:TCP/IP>netif_set_ipaddr: netif address being changed
8323:TCP/IP>netif: IP address of interface pp set to 10.200.45.187
8323:TCP/IP>sifup[0]: err_code=0
ppp_link_status_cb: PPPERR_NONE
our_ip4addr = 10.200.45.187
his_ipaddr = 10.64.64.64
netmask = 255.255.255.255
dns1 = 0.0.0.0
dns2 = 0.0.0.0
8325:TCP/IP>local IP address 10.200.45.187
8325:TCP/IP>remote IP address 10.64.64.64
8325:TCP/IP>ppp phase changed[0]: phase=10