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PPPD issue on ELS61-E | Thales IoT Developer Community

Tonino

March 3, 2020 - 12:27pm, 345 views

Hi,

I'm experiencing a strange issue with an ELS61-E modem.

I have an ESEYE SIM that works just fine with a TC65i and an ELS61-E R2.

I'm connecting via PPP. Aparently the CHAP authentication is not triggered on the ELS61-E.
I really don't understand how that is possible because apparently it is requested from the other side.

After that, the ELS61 get no response when trying to set the VJ compression, while the ELS61-E R2 gets a ProtRej message and continues without issues.

EDIT: When disabling VJ compression the behaviour is still the same, so the problem proably sits on the authentication side.

Following are PPP logs for ELS61-E R2 and ELS61-E that show the difference. (The first differences are highlighted using bold).

ELS61-E R2 OK
<149>Mar  3 11:10:07 pppd[35]: pppd 2.3.8 started by (unknown), uid 0
<148>Mar  3 11:10:07 pppd[35]: /bin/chat -v -f /etc/ppp/connect
<150>Mar  3 11:10:08 chat[36]: timeout set to 8 seconds
<150>Mar  3 11:10:08 chat[36]: abort on (BUSY)
<150>Mar  3 11:10:08 chat[36]: abort on (VOICE)
<150>Mar  3 11:10:08 chat[36]: abort on (ERROR)
<150>Mar  3 11:10:08 chat[36]: abort on (NO CARRIER)
<150>Mar  3 11:10:08 chat[36]: send (ATD*99***1#^M)
<150>Mar  3 11:10:10 chat[36]: timeout set to 30 seconds
<150>Mar  3 11:10:10 chat[36]: expect (CONNECT)
<150>Mar  3 11:10:10 chat[36]: ^M
<150>Mar  3 11:10:10 chat[36]: CONNECT
<150>Mar  3 11:10:10 chat[36]:  -- got it
<150>Mar  3 11:10:10 chat[36]: send (^M)
<148>Mar  3 11:10:13 pppd[35]: Serial connection established.
<148>Mar  3 11:10:13 pppd[35]: using channel 1
<148>Mar  3 11:10:13 pppd[35]: Using interface ppp0
<149>Mar  3 11:10:13 pppd[35]: pppd create pidfile
<148>Mar  3 11:10:13 pppd[35]: Connect: ppp0 <--> /dev/ttyS1
<148>Mar  3 11:10:14 pppd[35]: sent [LCP ConfReq id=0x1 <asyncmap 0xa0000> <magic 0x74b510de> <pcomp> <accomp>]
<148>Mar  3 11:10:14 pppd[35]: Timeout 0x649c2cc8:0x649fa664 in 3 seconds.
<148>Mar  3 11:10:14 pppd[35]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap MD5> <magic 0x34287b32> <pcomp> <accomp>]
<148>Mar  3 11:10:14 pppd[35]: lcp_reqci: returning CONFACK.
<148>Mar  3 11:10:14 pppd[35]: sent [LCP ConfAck id=0x1 <asyncmap 0x0> <auth chap MD5> <magic 0x34287b32> <pcomp> <accomp>]
<148>Mar  3 11:10:14 pppd[35]: rcvd [LCP ConfAck id=0x1 <asyncmap 0xa0000> <magic 0x74b510de> <pcomp> <accomp>]
<148>Mar  3 11:10:14 pppd[35]: Untimeout 0x649c2cc8:0x649fa664.
<148>Mar  3 11:10:14 pppd[35]: rcvd [CHAP Challenge id=0x1 <9500fa931280f400>, name = ""]
<148>Mar  3 11:10:14 pppd[35]: ChapReceiveChallenge: rcvd type CHAP-DIGEST-MD5
<148>Mar  3 11:10:15 pppd[35]: sent [CHAP Response id=0x1 <166f3dc3e3b6f0285ed58cf1ceab6c09>, name = "USER"]
<148>Mar  3 11:10:15 pppd[35]: Timeout 0x649cacac:0x649fa974 in 3 seconds.
<148>Mar  3 11:10:15 pppd[35]: rcvd [CHAP Success id=0x1 "Welcome!"]
<148>Mar  3 11:10:15 pppd[35]: Untimeout 0x649cacac:0x649fa974.
<148>Mar  3 11:10:15 pppd[35]: Remote message: Welcome!
<148>Mar  3 11:10:15 pppd[35]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:10:15 pppd[35]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:10:17 pppd[35]: sent [CCP ConfReq id=0x1]
<148>Mar  3 11:10:17 pppd[35]: Timeout 0x649c2cc8:0x649fa8c4 in 3 seconds.
<148>Mar  3 11:10:17 pppd[35]: rcvd [LCP ProtRej id=0x2 80 fd 01 01 00 04]
<148>Mar  3 11:10:17 pppd[35]: Untimeout 0x649c2cc8:0x649fa8c4.
<148>Mar  3 11:10:17 pppd[35]: rcvd [IPCP ConfReq id=0x1]
<148>Mar  3 11:10:17 pppd[35]: ipcp: returning Configure-NAK
<148>Mar  3 11:10:17 pppd[35]: sent [IPCP ConfNak id=0x1 <addr 10.0.0.1>]
<148>Mar  3 11:10:17 pppd[35]: rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]
<148>Mar  3 11:10:17 pppd[35]: Untimeout 0x649c2cc8:0x649fa884.
<148>Mar  3 11:10:17 pppd[35]: sent [IPCP ConfReq id=0x2 <addr 0.0.0.0>]
<148>Mar  3 11:10:17 pppd[35]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:10:17 pppd[35]: rcvd [IPCP ConfReq id=0x2 <addr 10.228.127.220>]
<148>Mar  3 11:10:17 pppd[35]: ipcp: returning Configure-ACK
<148>Mar  3 11:10:17 pppd[35]: sent [IPCP ConfAck id=0x2 <addr 10.228.127.220>]
<148>Mar  3 11:10:17 pppd[35]: rcvd [IPCP ConfNak id=0x2 <addr 10.228.127.220>]
<148>Mar  3 11:10:17 pppd[35]: Untimeout 0x649c2cc8:0x649fa884.
<148>Mar  3 11:10:17 pppd[35]: sent [IPCP ConfReq id=0x3 <addr 10.228.127.220>]
<148>Mar  3 11:10:17 pppd[35]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:10:17 pppd[35]: rcvd [IPCP ConfAck id=0x3 <addr 10.228.127.220>]
<148>Mar  3 11:10:17 pppd[35]: Untimeout 0x649c2cc8:0x649fa884.
<148>Mar  3 11:10:17 pppd[35]: ipcp: up
<148>Mar  3 11:10:18 pppd[35]: ioctl(SIOCDELRT): No such process(3)
<148>Mar  3 11:10:18 pppd[35]: local  IP address 10.228.127.220
<148>Mar  3 11:10:18 pppd[35]: remote IP address 10.228.127.220

ELS61-E (Fails to connect)

ELS61-E TIMEOUT
<149>Mar  3 11:36:24 pppd[44]:pppd 2.3.8 started by (unknown), uid 0
<148>Mar  3 11:36:24 pppd[44]: /bin/chat -v -f /etc/ppp/connect
<150>Mar  3 11:36:25 chat[45]: timeout set to 8 seconds
<150>Mar  3 11:36:25 chat[45]: abort on (BUSY)
<150>Mar  3 11:36:25 chat[45]: abort on (VOICE)
<150>Mar  3 11:36:25 chat[45]: abort on (ERROR)
<150>Mar  3 11:36:25 chat[45]: abort on (NO CARRIER)
<150>Mar  3 11:36:25 chat[45]: send (ATD*99***1#^M)
<150>Mar  3 11:36:28 chat[45]: timeout set to 30 seconds
<150>Mar  3 11:36:28 chat[45]: expect (CONNECT)
<150>Mar  3 11:36:28 chat[45]: ^M
<150>Mar  3 11:36:28 chat[45]: CONNECT
<150>Mar  3 11:36:28 chat[45]:  -- got it
<150>Mar  3 11:36:28 chat[45]: send (^M)
<148>Mar  3 11:36:29 pppd[44]: Serial connection established.
<148>Mar  3 11:36:29 pppd[44]: using channel 2
<148>Mar  3 11:36:29 pppd[44]: Using interface ppp0
<149>Mar  3 11:36:29 pppd[44]: pppd create pidfile
<148>Mar  3 11:36:29 pppd[44]: Connect: ppp0 <--> /dev/ttyS1
<148>Mar  3 11:36:30 pppd[44]: sent [LCP ConfReq id=0x1 <asyncmap 0xa0000> <magic 0x22294d2b> <pcomp> <accomp>]
<148>Mar  3 11:36:30 pppd[44]: Timeout 0x649c2cc8:0x649fa664 in 3 seconds.
NO CHAP request here!
<148>Mar  3 11:36:30 pppd[44]: rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x8602da91> <pcomp> <accomp>]
<148>Mar  3 11:36:30 pppd[44]: lcp_reqci: returning CONFACK.
<148>Mar  3 11:36:30 pppd[44]: sent [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x8602da91> <pcomp> <accomp>]
<148>Mar  3 11:36:30 pppd[44]: rcvd [LCP ConfAck id=0x1 <asyncmap 0xa0000> <magic 0x22294d2b> <pcomp> <accomp>]
<148>Mar  3 11:36:30 pppd[44]: Untimeout 0x649c2cc8:0x649fa664.
<148>Mar  3 11:36:30 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:30 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:36:34 pppd[44]: sent [CCP ConfReq id=0x1]
NO response to the VJ compression setup
<148>Mar  3 11:36:36 pppd[44]: Timeout 0x649c2cc8:0x649fa8c4 in 3 seconds.
<148>Mar  3 11:36:36 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:36 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:36:36 pppd[44]: rcvd [LCP ProtRej id=0x2 80 fd 01 01]
<148>Mar  3 11:36:37 pppd[44]: Untimeout 0x649c2cc8:0x649fa8c4.
<148>Mar  3 11:36:39 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:40 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:36:43 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:45 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:36:48 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:49 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:36:52 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:53 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:36:56 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:36:58 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:37:01 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:37:01 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:37:04 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:37:04 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:37:07 pppd[44]: sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
<148>Mar  3 11:37:09 pppd[44]: Timeout 0x649c2cc8:0x649fa884 in 3 seconds.
<148>Mar  3 11:37:12 pppd[44]: IPCP: timeout sending Config-Requests
<148>Mar  3 11:37:12 pppd[44]: CCP: Down event in state 1!
<148>Mar  3 11:37:12 pppd[44]: sent [LCP TermReq id=0x2 "No network protocols running"]
<148>Mar  3 11:37:13 pppd[44]: Timeout 0x649c2cc8:0x649fa664 in 3 seconds.
<148>Mar  3 11:37:16 pppd[44]: sent [LCP TermReq id=0x3 "No network protocols running"]
<148>Mar  3 11:37:17 pppd[44]: Timeout 0x649c2cc8:0x649fa664 in 3 seconds.
<148>Mar  3 11:37:20 pppd[44]: Connection terminated.
<150>Mar  3 11:37:20 pppd[44]: Exit.
----

PPP configration is exactly the same in both modems.

Thanks in advance for any advice

Toni