# MC7350 Linux pppd connect script centos 6 **URL:** \ **Category:** MC/EM Series\ **Created:** [January 20, 2016, 7:38pm UTC](https://forum.sierrawireless.com/t/mc7350-linux-pppd-connect-script-centos-6/8374 "2016-01-20T19:38:17Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![trcorp99](https://avatars.discourse-cdn.com/v4/letter/t/22d042/32.png) [@trcorp99](https://forum.sierrawireless.com/u/trcorp99)\ **Post date:** [January 20, 2016, 7:38pm UTC](https://forum.sierrawireless.com/t/mc7350-linux-pppd-connect-script-centos-6/8374/1 "2016-01-20T19:38:17Z")
Does any one have a working pppd config they can post, I am using a MC7350 on Centos 6.6 and I am having trouble connecting. I was able to compile and load the Gobi drivers version SierraLinuxQMIdriversS2.25N2.36 and I can see the MC7350. [centos6.6]# uname -a Linux centos6.6 2.6.32-573.12.1.el6.i686 #1 SMP Tue Dec 15 18:25:17 UTC 2015 i686 i686 i386 GNU/Linux [centos6.6]# lsmod Module Size Used by sierra 14980 0 ppp\_generic 21173 0 slhc 5201 1 ppp\_generic ipv6 270937 24 GobiSerial 9204 0 usbserial 30493 2 sierra,GobiSerial GobiNet 50901 0 usbnet 30456 1 GobiNet serio\_raw 3530 0 sg 24006 0 snd\_hda\_codec\_hdmi 40044 1 r8169 63274 0 snd\_hda\_codec\_via 17812 1 snd\_hda\_codec\_generic 54394 1 snd\_hda\_codec\_via mii 4476 2 usbnet,r8169 snd\_hda\_intel 45473 0 snd\_hda\_codec 114217 4 snd\_hda\_codec\_hdmi,snd\_hda\_codec\_via,snd\_hda\_codec\_generic,snd\_hda\_intel snd\_hwdep 5474 1 snd\_hda\_codec snd\_seq 49055 0 snd\_seq\_device 5689 1 snd\_seq snd\_pcm 73758 3 snd\_hda\_codec\_hdmi,snd\_hda\_intel,snd\_hda\_codec snd\_timer 17504 2 snd\_seq,snd\_pcm snd 55156 10 snd\_hda\_codec\_hdmi,snd\_hda\_codec\_via,snd\_hda\_codec\_generic,snd\_hda\_intel,snd\_hda\_codec,snd\_hwdep,snd\_seq,snd\_seq\_device,snd\_pcm,snd\_timer soundcore 6390 2 snd\_hda\_codec,snd snd\_page\_alloc 7236 2 snd\_hda\_intel,snd\_pcm ext4 339812 5 jbd2 75927 1 ext4 mbcache 6017 1 ext4 sd\_mod 33249 3 crc\_t10dif 836 1 sd\_mod xhci\_hcd 162628 0 ahci 36204 2 video 17202 0 output 1741 1 video dm\_mirror 11969 0 dm\_region\_hash 9644 1 dm\_mirror dm\_log 8322 2 dm\_mirror,dm\_region\_hash dm\_mod 84711 17 dm\_mirror,dm\_log [centos6.6]# lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 002: ID 1199:68c0 Sierra Wireless, Inc. Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub [centos6.6]# cat /etc/ppp/peers/vzw\_chat ‘’ ‘ATZ’ ‘’ ‘at+cgdcont=1,“IP”,“ne01.vzwstatic”’ ‘OK’ ‘ATDT#777’ ‘CONNECT’ ‘’ [centos6.6]# cat /etc/ppp/peers/vzwconnect name someusername connect “/usr/sbin/chat -v -f /etc/ppp/peers/vzw\_chat” defaultroute usepeerdns ttyUSB2 local usepeerdns debug -detach ---
**Author:** ![trcorp99](https://avatars.discourse-cdn.com/v4/letter/t/22d042/32.png) [@trcorp99](https://forum.sierrawireless.com/u/trcorp99)\ **Post date:** [January 20, 2016, 7:56pm UTC](https://forum.sierrawireless.com/t/mc7350-linux-pppd-connect-script-centos-6/8374/2 "2016-01-20T19:56:24Z")
I removed ATZ from my chat script since its not a command listed in the AirPrime MiniCard MC73xx/8805 AT Command Reference and it was causing an error anyway. Below is the output from running pppd again. [centos6.6]# pppd call vzwconnect Script /usr/sbin/chat -v -f /etc/ppp/peers/vzw\_chat finished (pid 14512), status = 0x3 Connect script failed [centos6.6]# cat /etc/ppp/peers/vzw\_chat ‘’ ‘at+cgdcont=1,“IP”,“ne01.vzwstatic”’ ‘OK’ ‘ATDT#777’ ‘CONNECT’ ‘’ [centos6.6]# tail -n 14 /var/log/messages Jan 20 19:50:29 avF3B1 pppd[14009]: pppd 2.4.5 started by sos, uid 0 Jan 20 19:50:29 avF3B1 chat[14010]: send (at+cgdcont=1,“IP”,“ne01.vzwstatic”^M) Jan 20 19:50:29 avF3B1 chat[14010]: expect (OK) Jan 20 19:50:29 avF3B1 chat[14010]: at+cgdcont=1,“IP”,“ne01.vzwstatic”^M^M Jan 20 19:50:29 avF3B1 chat[14010]: OK Jan 20 19:50:29 avF3B1 chat[14010]: – got it Jan 20 19:50:29 avF3B1 chat[14010]: send (ATDT#777^M) Jan 20 19:50:30 avF3B1 chat[14010]: expect (CONNECT) Jan 20 19:50:30 avF3B1 chat[14010]: ^M Jan 20 19:50:30 avF3B1 chat[14010]: ATDT#777^M^M Jan 20 19:50:30 avF3B1 chat[14010]: NO CARRIER^M Jan 20 19:50:47 avF3B1 chat[14010]: SIGINT Jan 20 19:50:47 avF3B1 pppd[14009]: Connect script failed Jan 20 19:50:47 avF3B1 pppd[14009]: Exit. ---
**Author:** ![trcorp99](https://avatars.discourse-cdn.com/v4/letter/t/22d042/32.png) [@trcorp99](https://forum.sierrawireless.com/u/trcorp99)\ **Post date:** [January 20, 2016, 9:24pm UTC](https://forum.sierrawireless.com/t/mc7350-linux-pppd-connect-script-centos-6/8374/3 "2016-01-20T21:24:32Z")
I got it working! My chat script needed some changes. The key line was ‘OK’ ‘atdt_99_\*\*3#’. [centos6.6]# cat /etc/ppp/peers/vzw\_chat ‘’ ‘ATZ’ ‘’ ‘ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0’ ‘’ ‘at+cgdcont=1,“IP”,“ne01.vzwstatic”’ ‘OK’ ‘atdt_99_\*\*3#’ ‘CONNECT’ ‘’ [centos6.6]# cat /etc/ppp/chap-secrets “\@vzw3g.com” \* “vzw”[root@avF3B1 sos]# ifconfig ppp0 [centos6.6]# ifconfig ppp0 ppp0 Link encap:Point-to-Point Protocol inet addr:\ P-t-P:10.64.64.64 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:30967 errors:0 dropped:0 overruns:0 frame:0 TX packets:58719 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:1290095 (1.2 MiB) TX bytes:87156146 (83.1 MiB) I also want to mention that the account we are using has a static ip assignment and our apn is allocated in the northeast. If anyone has any questions you can email me at andrew[at][solarrigtech.com](http://solarrigtech.com) ---
**Author:** ![trcorp99](https://avatars.discourse-cdn.com/v4/letter/t/22d042/32.png) [@trcorp99](https://forum.sierrawireless.com/u/trcorp99)\ **Post date:** [January 20, 2016, 10:31pm UTC](https://forum.sierrawireless.com/t/mc7350-linux-pppd-connect-script-centos-6/8374/4 "2016-01-20T22:31:37Z")
This method may not be the best way, it appears that Sierra Wireless recommends their Linux QMI SDK. [source.sierrawireless.com/resour … 03,-d-,13/](http://source.sierrawireless.com/resources/airprime/software/linux-qmi-sdk-software-03,-d-,03,-d-,13/) ---
**Author:** ![trcorp99](https://avatars.discourse-cdn.com/v4/letter/t/22d042/32.png) [@trcorp99](https://forum.sierrawireless.com/u/trcorp99)\ **Post date:** [January 28, 2016, 7:52pm UTC](https://forum.sierrawireless.com/t/mc7350-linux-pppd-connect-script-centos-6/8374/5 "2016-01-28T19:52:39Z")
I am getting good speeds using pppd, so it appears to be a workable solution. The issue with the provided Sierra Wireless connection manager is that it appears to only work in an interactive manor. Someone please correct me if I’m wrong and if passing cli arguments to it is possible. It is possible to write ones own connection program using the API’s but for my case if standard linux tools can handle the job that solution is fine. Speed test info on my device while connected via the MC7350, over 2 megabytes per second. [root@centsos6.6 tmp]# wget -O /dev/null [speedtest.wdc01.softlayer.com/do … est500.zip](http://speedtest.wdc01.softlayer.com/downloads/test500.zip) –2016-01-28 19:34:14-- [speedtest.wdc01.softlayer.com/do … est500.zip](http://speedtest.wdc01.softlayer.com/downloads/test500.zip) Resolving [speedtest.wdc01.softlayer.com](http://speedtest.wdc01.softlayer.com)… 208.43.102.250, 2607:f0d0:3001:78::2 Connecting to speedtest.wdc01.softlayer.com|208.43.102.250|:80… connected. HTTP request sent, awaiting response… 200 OK Length: 524288000 (500M) [application/zip] Saving to: “/dev/null” 100%[============================================================================================================\>] 524,288,000 2.58M/s in 3m 40s 2016-01-28 19:40:55 (2.27 MB/s) - “/dev/null” saved [524288000/524288000] [root@centsos6.6 tmp]# tail -n 34 /var/log/signal Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Device State 😃EVICE CONNECTED Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Manufacture :Sierra Wireless, Incorporated Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Model Id :MC7350 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Firmware Revisions :SWI9X15C\_05.05.58.01 r27044 carmd-fwbuild1 2015/03/05 00:02:40 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Boot Revisions :SWI9X15C\_05.05.58.01 r27044 carmd-fwbuild1 2015/03/05 00:02:40 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: PRI Revisions :9903209 05.03 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: PRL Version :15425 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: PRL Preference :1 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: IMSI :[redacted] Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Hardware Revision :1.0 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Home Network :Verizon Wirele Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: PDP Type :UNKNOWN Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Authentication :UNKNOWN Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Profile Name :UNKNOWN Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: APN Name :UNKNOWN Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: User Name :UNKNOWN Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: ESN Number :[redacted] Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: IMEI Number :[redacted] Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: MEID Number :[redacted] Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Call Status 😃ISCONNECTED Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: ECIO :5 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: SINR :8 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: IO :-106 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: RSRQ :-13 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Signal Strength :-71 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: IP Address :0.0.0.0 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Primary DNS :0.0.0.0 Jan 28 19:40:47 centsos6.6 connectionmgrhosti686: Secondary DNS :0.0.0.0 Jan 28 19:40:48 centsos6.6 connectionmgrhosti686: Signal Strength :-125 Jan 28 19:40:48 centsos6.6 connectionmgrhosti686: ECIO :5 Jan 28 19:40:48 centsos6.6 connectionmgrhosti686: SINR :8 Jan 28 19:40:48 centsos6.6 connectionmgrhosti686: IO :-106 Jan 28 19:40:48 centsos6.6 connectionmgrhosti686: Signal Strength :-71 Jan 28 19:40:48 centsos6.6 connectionmgrhosti686: RSRQ :-11 [root@centsos6.6 tmp]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.64.64.64 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth1 0.0.0.0 10.64.64.64 0.0.0.0 UG 0 0 0 ppp0