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PPP / 3G 調製解調器沒有獲得 IP：沒有執行網路協議
使用中的調製解調器：SIM5310 連接到基於 ARM 的電路板。
root@cm-debian:~# uname -a Linux cm-debian 4.4.0-cm-t335-5.1-00030-gd350d89-dirty #29 SMP Sat Nov 4 19:18:48 PDT 2017 armv7l GNU/Linux我現在正在使用 minicom 初始化聊天，而不是使用腳本。
使用 AT 命令我可以看到分配了一個 IP 地址
at+cgpaddr +CGPADDR: 1,"176.13.98.14" +CGPADDR: 2,"0.0.0.0"AT ping 到 8.8.8.8 也可以：
at+cping="8.8.8.8",1 OK +STIN: 25 +STIN: 25 +CPING: 1,8.8.8.8,64,484,255 +CPING: 1,8.8.8.8,64,394,255 +CPING: 1,8.8.8.8,64,392,255 +CPING: 1,8.8.8.8,64,771,255 +CPING: 3,4,4,0,392,771,510更多資訊：
at+cgatt? +CGATT: 1# packet domain attached at+cgact? +CGACT: 1,1 # PDP context is activated +CGACT: 2,0 ati Manufacturer: SIMCOM INCORPORATED Model: SIMCOM_SIM5310 Revision: SIM5310_V1.5 IMEI: 359768030163686 +GCAP: +CGSM,+DS,+ES這是 pppd 的輸出
root@cm-debian:~# pppd -detach noauth noipdefault debug usepeerdns /dev/ttyO1 115200 ipcp-accept-local ipcp-accept-remote using channel 36 Using interface ppp0 Connect: ppp0 <--> /dev/ttyO1 sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x4748d05c> <pcomp> <accomp>] rcvd [LCP ConfReq id=0x50 <asyncmap 0x0> <auth pap> <magic 0x15c05db> <pcomp> <accomp>] No auth is possible sent [LCP ConfRej id=0x50 <auth pap>] rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x4748d05c> <pcomp> <accomp>] rcvd [LCP ConfReq id=0x51 <asyncmap 0x0> <magic 0x15c05db> <pcomp> <accomp>] sent [LCP ConfAck id=0x51 <asyncmap 0x0> <magic 0x15c05db> <pcomp> <accomp>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] rcvd [LCP DiscReq id=0x52 magic=0x15c05db] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] IPCP: timeout sending Config-Requests sent [LCP TermReq id=0x2 "No network protocols running"] sent [LCP TermReq id=0x3 "No network protocols running"] Connection terminated. Modem hangup嘗試使用 pap 空白使用者/通過身份驗證：
root@cm-debian:~# pppd -detach user "" password "" noipdefault debug usepeerdns /dev/ttyO1 115200 ipcp-accept-local ipcp-accept-remote using channel 37 Using interface ppp0 Connect: ppp0 <--> /dev/ttyO1 sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x9300f3d> <pcomp> <accomp>] rcvd [LCP ConfReq id=0x53 <asyncmap 0x0> <auth pap> <magic 0x15fa3e3> <pcomp> <accomp>] sent [LCP ConfAck id=0x53 <asyncmap 0x0> <auth pap> <magic 0x15fa3e3> <pcomp> <accomp>] rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x9300f3d> <pcomp> <accomp>] sent [PAP AuthReq id=0x1 user="" password=<hidden>] rcvd [LCP DiscReq id=0x54 magic=0x15fa3e3] rcvd [PAP AuthAck id=0x1 ""] PAP authentication succeeded sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] IPCP: timeout sending Config-Requests sent [LCP TermReq id=0x2 "No network protocols running"] sent [LCP TermReq id=0x3 "No network protocols running"] Connection terminated. Modem hangup禁用標頭壓縮等：
root@cm-debian:~# pppd -detach user "" password "" novj noccp novjccomp noipdefault debug usepeerdns /dev/ttyO1 115200 ipcp-accept-local ipcp-accept-remote using channel 38 Using interface ppp0 Connect: ppp0 <--> /dev/ttyO1 sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x670e49b4> <pcomp> <accomp>] rcvd [LCP ConfReq id=0x55 <asyncmap 0x0> <auth pap> <magic 0x161ece0> <pcomp> <accomp>] sent [LCP ConfAck id=0x55 <asyncmap 0x0> <auth pap> <magic 0x161ece0> <pcomp> <accomp>] rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x670e49b4> <pcomp> <accomp>] sent [PAP AuthReq id=0x1 user="" password=<hidden>] rcvd [LCP DiscReq id=0x56 magic=0x161ece0] rcvd [PAP AuthAck id=0x1 ""] PAP authentication succeeded sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] IPCP: timeout sending Config-Requests sent [LCP TermReq id=0x2 "No network protocols running"] sent [LCP TermReq id=0x3 "No network protocols running"] Connection terminated. Modem hangup更新：
我可以使用以下屬性獲取 ms-wins IP 地址： 注意：這種情況偶爾會發生，主要返回 0.0.0.0 wins 地址
root@cm-debian:~# pppd -detach user "" password "" debug usepeerdns /dev/ttyO1 115200 using channel 52 Using interface ppp0 Connect: ppp0 <--> /dev/ttyO1 sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x6f1654a4> <pcomp> <accomp>] rcvd [LCP ConfReq id=0x76 <asyncmap 0x0> <auth pap> <magic 0x18a9792> <pcomp> <accomp>] sent [LCP ConfAck id=0x76 <asyncmap 0x0> <auth pap> <magic 0x18a9792> <pcomp> <accomp>] rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x6f1654a4> <pcomp> <accomp>] sent [PAP AuthReq id=0x1 user="" password=<hidden>] rcvd [LCP DiscReq id=0x77 magic=0x18a9792] rcvd [PAP AuthAck id=0x1 ""] PAP authentication succeeded sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>] rcvd [IPCP ConfNak id=0x1 <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] IPCP: timeout sending Config-Requests sent [LCP TermReq id=0x2 "No network protocols running"] sent [LCP TermReq id=0x3 "No network protocols running"] Connection terminated. Modem hangup有任何想法嗎？
在 at+cgdcont 中使用“sphone”而不是“internetg”