3 Apr
2017
3 Apr
'17
7:50 a.m.
Hello,
I tried to use a Huawei E1823 UMTS-Stick on a debian8-laptop with wvdial and pppd to
connect to a nano3G for getting an IP/Internet-connection via UMTS/HSDPA.
The setup is mainly as described on
http://osmocom.org/projects/cellular-infrastructure/wiki/Getting_Started_wi….
When using an android-Smartphone with the same configuration of the ggsn and the other
components the IP/Internet-connection is working.
After pppd is started from wvdial it receives his local IP-address from the "net
192.168.99.0/24" parameter of ggsn.conf and also the configured DNS-Server, but no
remote-IP, so 10.64.64.64 is used by pppd as a default value:
...
--> local IP address 192.168.99.5
--> pppd: �[7f]
--> remote IP address 10.64.64.64
--> pppd: �[7f]
--> primary DNS address 8.8.8.8
--> pppd: �[7f]
..which results in an unusable ppp0-device:
ppp0 Link encap:Point-to-Point Protocol
inet addr:192.168.99.5 P-t-P:10.64.64.64 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
Has anybody successfully used an UMTS-Stick with ggsn?
How can I tell ggsn to send his IP-Adress, which can be used by pppd as "remote IP
address"?
Are there special options for pppd which I have to use?
thanks and greetings,
Andreas
3 Apr
3 Apr
8:18 a.m.
Hi Andreas,
first of all congratulations to get the setup running and to reproduce
the current status of the Osmocom 3G support.
On Mon, Apr 03, 2017 at 07:50:32AM +0200, Andreas Mueller wrote:
After pppd is started from wvdial it receives his
local IP-address
from the "net 192.168.99.0/24" parameter of ggsn.conf and also the
configured DNS-Server, but no remote-IP, so 10.64.64.64 is used by
pppd as a default value:
This is very odd. Please include a protocol trace of the Iuh interface.
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
2:10 p.m.
On Mon, Apr 03, 2017 at 07:50:32AM +0200, Andreas Mueller wrote:
After pppd is started from wvdial it receives his
local IP-address from the "net 192.168.99.0/24" parameter of ggsn.conf and also
the configured DNS-Server, but no remote-IP, so 10.64.64.64 is used by pppd as a default
value:
...
--> local IP address 192.168.99.5
--> pppd: �[7f]
--> remote IP address 10.64.64.64
--> pppd: �[7f]
--> primary DNS address 8.8.8.8
--> pppd: �[7f]
I know a whole while back we tried unsuccessfully to use an UMTS "stick"
to test data services, but never got it to work. We saw the same: smart
phone works fine, UMTS stick fails to establish data.
You might be onto the reason there, would be great if you could help us
resolve this!
Has anybody successfully used an UMTS-Stick with
ggsn?
How can I tell ggsn to send his IP-Adress, which can be used by pppd as "remote IP
address"?
Are there special options for pppd which I have to use?
I don't really know and would have to look into it in detail.
It would be great if you could try to understand what's going on from
traces and/or openggsn code and/or openbsc code...
Maybe we somehow send the wrong or incomplete configuration and maybe
smart phones have some magic to work around it, which UMTS sticks don't?
~N
3:29 p.m.
Hi Andreas,
Could you provide a pcap of the Create PDP Request and Response exchange between
SGSN and GGSN?
Regards
Andreas
----- On Apr 3, 2017, at 7:50 AM, Andreas Mueller andreas.mueller(a)criticallabs.org wrote:
Hello,
I tried to use a Huawei E1823 UMTS-Stick on a debian8-laptop with wvdial and
pppd to connect to a nano3G for getting an IP/Internet-connection via
UMTS/HSDPA.
The setup is mainly as described on
http://osmocom.org/projects/cellular-infrastructure/wiki/Getting_Started_wi….
When using an android-Smartphone with the same configuration of the ggsn and the
other components the IP/Internet-connection is working.
After pppd is started from wvdial it receives his local IP-address from the "net
192.168.99.0/24" parameter of ggsn.conf and also the configured DNS-Server, but
no remote-IP, so 10.64.64.64 is used by pppd as a default value:
...
--> local IP address 192.168.99.5
--> pppd: �[7f]
--> remote IP address 10.64.64.64
--> pppd: �[7f]
--> primary DNS address 8.8.8.8
--> pppd: �[7f]
..which results in an unusable ppp0-device:
ppp0 Link encap:Point-to-Point Protocol
inet addr:192.168.99.5 P-t-P:10.64.64.64 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
Has anybody successfully used an UMTS-Stick with ggsn?
How can I tell ggsn to send his IP-Adress, which can be used by pppd as "remote
IP address"?
Are there special options for pppd which I have to use?
thanks and greetings,
Andreas
4 Apr
4 Apr
10:03 a.m.
Hallo,
unfortunately I have very limited time during the next days, but I can do further testing
on friday and will provide you with the pcap- and logfiles.
greetings,
Andreas
On Mon, Apr 03, 2017 at 03:29:56PM +0200, Andreas Schultz wrote:
Hi Andreas,
Could you provide a pcap of the Create PDP Request and Response exchange between
SGSN and GGSN?
Regards
Andreas
----- On Apr 3, 2017, at 7:50 AM, Andreas Mueller andreas.mueller(a)criticallabs.org
wrote:
> Hello,
>
> I tried to use a Huawei E1823 UMTS-Stick on a debian8-laptop with wvdial and
> pppd to connect to a nano3G for getting an IP/Internet-connection via
> UMTS/HSDPA.
> The setup is mainly as described on
> http://osmocom.org/projects/cellular-infrastructure/wiki/Getting_Started_wi….
>
> When using an android-Smartphone with the same configuration of the ggsn and the
> other components the IP/Internet-connection is working.
>
> After pppd is started from wvdial it receives his local IP-address from the
"net
> 192.168.99.0/24" parameter of ggsn.conf and also the configured DNS-Server,
but
> no remote-IP, so 10.64.64.64 is used by pppd as a default value:
>
> ...
> --> local IP address 192.168.99.5
> --> pppd: �[7f]
> --> remote IP address 10.64.64.64
> --> pppd: �[7f]
> --> primary DNS address 8.8.8.8
> --> pppd: �[7f]
>
> ..which results in an unusable ppp0-device:
> ppp0 Link encap:Point-to-Point Protocol
> inet addr:192.168.99.5 P-t-P:10.64.64.64 Mask:255.255.255.255
> UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
>
>
> Has anybody successfully used an UMTS-Stick with ggsn?
> How can I tell ggsn to send his IP-Adress, which can be used by pppd as
"remote
> IP address"?
> Are there special options for pppd which I have to use?
>
>
> thanks and greetings,
>
> Andreas
7 Apr
7 Apr
7:52 p.m.
Hello,
today the UMTS-USB-stick established a successfull IP-connection on the first attempt, but
further attempts failed. When comparing packet-dumps of a successful and a failed
connection-attempt and looking and the RANAP and GTP-packages I saw, that on the failed
connection-attempts the UMTS-Stick is not authorized and on the successful attempt at
first a location-update is made and then the authentification, which succeeds.
Adding the command "AT+CREG" to wvdial.conf seems to solve the problem. Then I
can see an "Routing Area Update Request" which is rejected then the
authorization happens (Attach, Identity, Authentication) and the IP-connection is
successfully established!
Here is a working wvdial.conf for the huawei E1823:
[Dialer Defaults]
Init1 = AT^U2DIAG=0
Init2 = AT+CREG
Init3 = ATZ
Init4 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init5 = AT+CGDCONT=1,"IP","web.blubb.xy"
Modem Type = Analog Modem
Baud = 9600
New PPPD = yes
Modem = /dev/ttyUSB0
Stupid mode = 1
ISDN = 0
Phone = *99#
Password = none
Username = none
It takes very long (>30 seconds) until ppp0 receives the IP-config but afterwards it is
working with 6625 kBit/s down- and 580kBit/s upstream.
greetings,
Andreas
19 Apr
19 Apr
12:59 p.m.
I won't have time for some days, but this looks like someone should
verify this. I'm still wondering why a "Routing Area Update Request" is
rejected, so some clarification could also be good...
And we should incorporate this information on our wiki; I see that it is
mentioned on
https://osmocom.org/projects/cellular-infrastructure/wiki/Accelerate3g5_--_…
but at least when this is verified/clarified we should incorporate it in
https://osmocom.org/projects/cellular-infrastructure/wiki/Getting_Started_w…
Many thanks so far, Andreas!
I also noticed from your Accelerate3g5 page that the getting started guide
lacks the creation of the hlr.db. I added this to the main guide now (but
used the new default db name of 'hlr.db').
~N
On Fri, Apr 07, 2017 at 07:52:15PM +0200, Andreas Mueller wrote:
Hello,
today the UMTS-USB-stick established a successfull IP-connection on the first attempt,
but further attempts failed. When comparing packet-dumps of a successful and a failed
connection-attempt and looking and the RANAP and GTP-packages I saw, that on the failed
connection-attempts the UMTS-Stick is not authorized and on the successful attempt at
first a location-update is made and then the authentification, which succeeds.
Adding the command "AT+CREG" to wvdial.conf seems to solve the problem. Then I
can see an "Routing Area Update Request" which is rejected then the
authorization happens (Attach, Identity, Authentication) and the IP-connection is
successfully established!
Here is a working wvdial.conf for the huawei E1823:
[Dialer Defaults]
Init1 = AT^U2DIAG=0
Init2 = AT+CREG
Init3 = ATZ
Init4 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init5 = AT+CGDCONT=1,"IP","web.blubb.xy"
Modem Type = Analog Modem
Baud = 9600
New PPPD = yes
Modem = /dev/ttyUSB0
Stupid mode = 1
ISDN = 0
Phone = *99#
Password = none
Username = none
It takes very long (>30 seconds) until ppp0 receives the IP-config but afterwards it
is working with 6625 kBit/s down- and 580kBit/s upstream.
greetings,
Andreas
--
- Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/
=======================================================================
* sysmocom - systems for mobile communications GmbH
* Alt-Moabit 93
* 10559 Berlin, Germany
* Sitz / Registered office: Berlin, HRB 134158 B
* Geschäftsführer / Managing Directors: Harald Welte
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7 comments
4 participants
participants (4)
-
Andreas Mueller -
Andreas Schultz -
Harald Welte -
Neels Hofmeyr