PPP dying with IPCP failing

Discussion:

Ether.pt

2008-04-18 15:57:48 UTC

Hi all,

I'm having a issue with pppd connection over UMTS.
I can dial into the server and authenticate but afterwards ir dies. I've attached my config files for ppp.

Heres the output of the connection:

Anyone has any ideas?

Thanks a lot
Ether

AT+CGDCONT=16,"IP"
OK
ATDT*99***16#
CONNECTchat: Apr 18 16:50:48 CONNECT
Serial connection established.
serial speed set to 115200 bps
Using interface sppp0
Connect: sppp0 <--> /dev/term/0
sent [LCP ConfReq id=0x75 <asyncmap 0x0> <magic 0x3114a823> <accomp>]
rcvd [LCP ConfReq id=0x32 <asyncmap 0x0> <auth chap MD5> <magic 0x1bb5bc7> <pcomp> <accomp>]
sent [LCP Ident id=0x76 magic=0x0 "ppp-2.4.0b1 (Sun Microsystems, Inc.)"]
sent [LCP ConfRej id=0x32 <pcomp>]
rcvd [LCP ConfAck id=0x75 <asyncmap 0x0> <magic 0x3114a823> <accomp>]
rcvd [LCP ConfReq id=0x33 <asyncmap 0x0> <auth chap MD5> <magic 0x1bb5bc7> <accomp>]
sent [LCP ConfAck id=0x33 <asyncmap 0x0> <auth chap MD5> <magic 0x1bb5bc7> <accomp>]
sent [LCP Ident id=0x77 magic=0x3114a823 "ppp-2.4.0b1 (Sun Microsystems, Inc.)"]
Authenticating to peer with standard CHAP
rcvd [LCP DiscReq id=0x34 magic=0x1bb5bc7]
rcvd [CHAP Challenge id=0x1 <fcf5c706de76e6316a02861122860875>, name = "UMTS_CHAP_SRVR"]
sent [CHAP Response id=0x1 <4d6caaea077f7feb97590439c8304a9f>, name = "removed"]
rcvd [CHAP Success id=0x1 ""]
sent [IPCP ConfReq id=0x12 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPCP ConfNak id=0x12 <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins1 10.11.12.13> <ms-wins2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
sent [IPCP ConfReq id=0x13 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
IPCP: timeout sending Config-Requests
sent [LCP TermReq id=0x78 "No network protocols running"]
sent [LCP TermReq id=0x79 "No network protocols running"]
Connection terminated.

This message posted from opensolaris.org

Ether.pt

2008-04-18 15:53:43 UTC

Permalink

James Carlson

2008-04-28 00:49:58 UTC

Permalink

Post by Ether.pt
I'm having a issue with pppd connection over UMTS.

UMTS is strange. It does the actual link authentication during IPCP
negotiation, rather than during PPP's authentication phase.

As a result, the authentication results are a fabrication: the server
reports "success," but doesn't actually check anything until IP is
brought up.

Post by Ether.pt
rcvd [CHAP Success id=0x1 ""]

... your credentials are not correct, or perhaps you haven't set up
UMTS Internet service with your provider.

Post by Ether.pt
sent [IPCP ConfReq id=0x12 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPCP ConfNak id=0x12 <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins1 10.11.12.13> <ms-wins2 10.11.12.14>]

Note that the peer provided some DNS addresses (via the Microsoft-
proprietary IPCP extensions), but didn't provide any IP address for
you to use. That's a fairly good indication that your credentials
(authentication data) are not right.

--
James Carlson, Solaris Networking <james.d.carlson-xsfywfwIY+***@public.gmane.org>
Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677

Ether.pt

2008-04-28 07:53:11 UTC

Permalink

Hi,

The odd part on all of this, is that if I use the HUAWEI E220 with the same configuration it works just fine. But with this Novatel U830 (I think this is the one ... I'not with the laptop right now) this is what happens.

I had the same problem before when I was using the the wrong phone number with the E220. But since it works in E220 shouldn#t it work with this one as well???? Or maybe there is the driver or init string different for the novatel? Even when I'm doing modem commands with tip I get results.

But here comes another odd thing. Changing the sim card to another operator, I'm still able to issue modem commands, but the output is exactly has vodafone. which is odd... once again in E220 doesn't happen :S

odd thing right?

Thanks
Ether.pt

This message posted from opensolaris.org

James Carlson

2008-04-28 10:51:59 UTC

Permalink

Post by Ether.pt
The odd part on all of this, is that if I use the HUAWEI E220 with the same configuration it works just fine. But with this Novatel U830 (I think this is the one ... I'not with the laptop right now) this is what happens.

If it works with one phone but not another, then I would suspect that
the provider has some sort of registration mechanism for the phones --
you'd have to contact the provider to find out why one works and the
other doesn't.

Post by Ether.pt
I had the same problem before when I was using the the wrong phone number with the E220. But since it works in E220 shouldn#t it work with this one as well???? Or maybe there is the driver or init string different for the novatel? Even when I'm doing modem commands with tip I get results.

Yes, it's possible that the Novatel device requires a different init
string. No, I have no real idea what that should be (it sounds like
you need a technical reference manual for the device), but see below.

Post by Ether.pt
But here comes another odd thing. Changing the sim card to another operator, I'm still able to issue modem commands, but the output is exactly has vodafone. which is odd... once again in E220 doesn't happen :S
odd thing right?

In searching the net on Novatel, it seems that a lot of people running
Linux are having similar issues.

What do your chat scripts look like? The best advice I've seen so far
(from doing some google searches) is to include the following before
the ATD command:

"" "ATZ"
OK "AT+CMEE=1"
OK 'AT+CGDCONT=1,"IP","internet"'