[srslte-users] Connect UE to Internet by eNB.
Pedro Alvarez
pedro.alvarez at softwareradiosystems.com
Tue Oct 8 12:54:56 UTC 2019
I don't think that having the static IP should make a difference.
Quick sanity questions:
1 - Can you ping 8.8.8.8 from the EPC machine?
2 - What distribution are you running? Do you have any firewall
enabled? On Fedora I had to run the following:
"sudo firewall-cmd --zone=trusted --add-interface=srs_spgw_sgi"
If you can ping from the EPC machine and you don't have a firewall,
can you check your IP tables ("iptables -L") and post them here?
Can you make sure that forwarding is enabled as well ("cat
/proc/sys/net/ipv4/ip_forward")?
Hope this helps,
Pedro
On Tue, Oct 8, 2019 at 9:24 AM Piotr Kulesza
<piotr.kulesza.1998.praca at gmail.com> wrote:
>
> Hi,
>
> Was my previous data message sufficient or should I add something else? I ask because I still
> haven't found a solution to my problem. Maybe the reason for this problem is that the interface
> connected to the internet has a static IP address set? This is unlikely in my opinion but is it possible?
> If the script indicating the internet interface for eNB worked, should any statement show up on the eNB
> or EPC console? If so, what does he look like?
>
> I will be grateful for any help.
>
> _____
> Piotr
>
>
>
>
> wt., 24 wrz 2019 o 15:50 Piotr Kulesza <piotr.kulesza.1998.praca at gmail.com> napisał(a):
>>
>> Hi,
>>
>> This is what my internet-connected interface looks like:
>>
>> eno1 Link encap:Ethernet HWaddr 1c:69:7a:00:85:96
>> inet addr:10.10.35.202 Bcast:10.10.35.255 Mask:255.255.255.0
>> inet6 addr: fe80::f949:d419:8309:80ad/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:5113 errors:0 dropped:64 overruns:0 frame:0
>> TX packets:2455 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:6775521 (6.7 MB) TX bytes:186627 (186.6 KB)
>> Interrupt:16 Memory:c0a00000-c0a20000
>>
>>
>> This is how I start the srsepc_if_masq script:
>>
>> sudo srsepc_if_masq.sh eno1
>>
>> Pings printout from an UE computer:
>>
>> eupc01 at eupc01-All-Series:~$ ping 172.16.0.1
>> PING 172.16.0.1 (172.16.0.1) 56(84) bytes of data.
>> 64 bytes from 172.16.0.1: icmp_seq=1 ttl=64 time=495 ms
>> 64 bytes from 172.16.0.1: icmp_seq=2 ttl=64 time=34.5 ms
>> 64 bytes from 172.16.0.1: icmp_seq=3 ttl=64 time=32.9 ms
>> ^C
>> --- 172.16.0.1 ping statistics ---
>> 3 packets transmitted, 3 received, 0% packet loss, time 2002ms
>> rtt min/avg/max/mdev = 32.998/187.657/495.468/217.656 ms
>> eupc01 at eupc01-All-Series:~$ ping 8.8.8.8
>> connect: Network is unreachable
>> eupc01 at eupc01-All-Series:~$ ping google.com
>> ping: unknown host google.com
>>
>> As you can see I can connect to SPGW but not to 8.8.8.8 or Google.
>>
>> pon., 23 wrz 2019 o 17:44 Pedro Alvarez <pedro.alvarez at softwareradiosystems.com> napisał(a):
>>>
>>> Hum... If you ran the srsepc_if_masq script correctly, I would say the
>>> most likely issue is either DNS or firewalling.
>>>
>>> To be sure, can you ping the SPGW? This will let us know if the LTE
>>> connection is ok.
>>> Can you ping 8.8.8.8? This will let us know if the packet forwarding is ok.
>>> Can you ping google.com? This will let us know if the DNS is ok.
>>>
>>> Regards,
>>> Pedro
>>>
>>>
>>> On Mon, Sep 23, 2019 at 11:36 AM Piotr Kulesza
>>> <piotr.kulesza.1998.praca at gmail.com> wrote:
>>> >
>>> > Hi,
>>> >
>>> > As you said, I disconnected the Ethernet cable and turned off wifi. Unfortunately, the internet is still down. I would like to ask for
>>> > some additional hints about what may cause the blockade of the Internet. If routing is needed, could someone send a link to a
>>> > simple tutorial?
>>> >
>>> > I additionally send a printout from ifconfig UE PC:
>>> >
>>> > tun_srsue Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
>>> > inet addr:172.16.0.4 P-t-P:172.16.0.4 Mask:255.255.255.0
>>> > UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
>>> > RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>>> > TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
>>> > collisions:0 txqueuelen:500
>>> > RX bytes:0 (0.0 B) TX bytes:48 (48.0 B)
>>> >
>>> > Printout from UE srsLTE:
>>> >
>>> > Reading configuration file /home/eupc01/.config/srslte/ue.conf...
>>> >
>>> > Built in Release mode using commit c4bcd6e on branch master.
>>> >
>>> > Opening 1 RF devices with 1 RF channels...
>>> > [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; UHD_3.14.1.0-release
>>> > [INFO] [LOGGING] Fastpath logging disabled at runtime.
>>> > Opening USRP with args: type=b200,master_clock_rate=23.04e6
>>> > [INFO] [B200] Detected Device: B210
>>> > [INFO] [B200] Operating over USB 3.
>>> > [INFO] [B200] Initialize CODEC control...
>>> > [INFO] [B200] Initialize Radio control...
>>> > [INFO] [B200] Performing register loopback test...
>>> > [INFO] [B200] Register loopback test passed
>>> > [INFO] [B200] Performing register loopback test...
>>> > [INFO] [B200] Register loopback test passed
>>> > [INFO] [B200] Asking for clock rate 23.040000 MHz...
>>> > [INFO] [B200] Actually got clock rate 23.040000 MHz.
>>> > Waiting PHY to initialize ... done!
>>> > Attaching UE...
>>> > Searching cell in DL EARFCN=3400, f_dl=2685.0 MHz, f_ul=2565.0 MHz
>>> > .
>>> > Found Cell: Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=0.1 KHz
>>> > Found PLMN: Id=00101, TAC=7
>>> > Random Access Transmission: seq=40, ra-rnti=0x2
>>> > Random Access Transmission: seq=5, ra-rnti=0x2
>>> > Random Access Complete. c-rnti=0x67, ta=8
>>> > RRC Connected
>>> > Network attach successful. IP: 172.16.0.4
>>> > Software Radio Systems LTE (srsLTE)
>>> > Received RRC Connection Release
>>> > RRC IDLE
>>> > /home/eupc01/srsLTE/lib/src/phy/phch/ra_dl.c.660: Configuring resource allocation
>>> >
>>> >
>>> > .
>>> > Found Cell: Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=-0.1 KHz
>>> > ...
>>> > Found Cell: Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=-0.4 KHz
>>> > The condition lb <= n <= ub (0 <= 11 <= 9) was not met
>>> > [/home/eupc01/srsLTE/lib/include/srslte/asn1/asn1_utils.h][753] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/src/asn1/rrc_asn1.cc][79954] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/src/asn1/rrc_asn1.cc][80019] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/include/srslte/asn1/asn1_utils.h][765] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/src/asn1/rrc_asn1.cc][80100] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/src/asn1/rrc_asn1.cc][80255] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/src/asn1/rrc_asn1.cc][80230] Decoding failure.
>>> > [/home/eupc01/srsLTE/lib/src/asn1/rrc_asn1.cc][80270] Decoding failure.
>>> >
>>> > And printout from eNB srsLTE:
>>> >
>>> > Built in Release mode using commit 3d9baeb on branch agent.
>>> >
>>> > --- Software Radio Systems LTE eNodeB ---
>>> >
>>> > Reading configuration file enb.conf...
>>> > [INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800; UHD_3.14.1.HEAD-0-g98c7c986
>>> > [INFO] [B200] Loading firmware image: /usr/local/share/uhd/images/usrp_b200_fw.hex...
>>> > Opening USRP with args: type=b200,master_clock_rate=30.72e6
>>> > [INFO] [B200] Detected Device: B200
>>> > [INFO] [B200] Loading FPGA image: /usr/local/share/uhd/images/usrp_b200_fpga.bin...
>>> > [INFO] [B200] Operating over USB 3.
>>> > [INFO] [B200] Detecting internal GPSDO....
>>> > [INFO] [GPS] No GPSDO found
>>> > [INFO] [B200] Initialize CODEC control...
>>> > [INFO] [B200] Initialize Radio control...
>>> > [INFO] [B200] Performing register loopback test...
>>> > [INFO] [B200] Register loopback test passed
>>> > [INFO] [B200] Asking for clock rate 30.720000 MHz...
>>> > [INFO] [B200] Actually got clock rate 30.720000 MHz.
>>> > Setting frequency: DL=2685.0 Mhz, UL=2565.0 MHz
>>> > [INFO] [B200] Asking for clock rate 11.520000 MHz...
>>> > [INFO] [B200] Actually got clock rate 11.520000 MHz.
>>> > Setting Sampling frequency 11.52 MHz
>>> >
>>> > ==== eNodeB started ===
>>> > Type <t> to view trace
>>> > RACH: tti=1151, preamble=7, offset=3, temp_crnti=0x46
>>> > RACH: tti=1151, preamble=10, offset=8, temp_crnti=0x49
>>> > RACH: tti=1151, preamble=13, offset=13, temp_crnti=0x4c
>>> > Disconnecting rnti=0x46.
>>> > Disconnecting rnti=0x4c.
>>> > User 0x49 connected
>>> > Disconnecting rnti=0x49.
>>> > RACH: tti=5081, preamble=44, offset=3, temp_crnti=0x4f
>>> > RACH: tti=5081, preamble=47, offset=8, temp_crnti=0x52
>>> > Disconnecting rnti=0x4f.
>>> > Disconnecting rnti=0x52.
>>> > RACH: tti=1951, preamble=35, offset=3, temp_crnti=0x55
>>> > RACH: tti=1951, preamble=38, offset=8, temp_crnti=0x58
>>> > RACH: tti=1951, preamble=41, offset=13, temp_crnti=0x5b
>>> > RACH: tti=1971, preamble=0, offset=8, temp_crnti=0x5e
>>> > Disconnecting rnti=0x55.
>>> > Disconnecting rnti=0x58.
>>> > Disconnecting rnti=0x5b.
>>> > User 0x5e connected
>>> > RACH: tti=6911, preamble=40, offset=8, temp_crnti=0x61
>>> > RACH: tti=6911, preamble=43, offset=13, temp_crnti=0x64
>>> > Disconnecting rnti=0x61.
>>> > RACH: tti=6961, preamble=5, offset=8, temp_crnti=0x67
>>> > Disconnecting rnti=0x64.
>>> > User 0x67 connected
>>> > Disconnecting rnti=0x5e.
>>> > Disconnecting rnti=0x67.
>>> >
>>> > czw., 19 wrz 2019 o 10:16 Andre Puschmann <andre.puschmann at softwareradiosystems.com> napisał(a):
>>> >>
>>> >> Hi,
>>> >>
>>> >> On 18/9/19 15:09, Piotr Kulesza wrote:
>>> >> > Hi,
>>> >> >
>>> >> > I'm trying to connect my UE created via srsue to the internet. UE and
>>> >> > eNB are able to see each other and I am able to ping them. For now I
>>> >> > have done this:
>>> >> > 1) I installed resolvconf and I saved in a
>>> >> > file/etc/resolvconf/resolv.conf.d/headwhat follows:
>>> >> > nameserver 8.8.4.4
>>> >> > nameserver 8.8.8.8
>>> >> > 2) I started ./srsepc_if_masq.sh <My Interface connected to Internet>
>>> >> >
>>> >> > Do I have to do anything else to connect to the Internet through the UE?
>>> >> > Any additional changes to the configuration files?
>>> >>
>>> >> No. Once you have a connection to the core it's all fine on the LTE
>>> >> side. From now on, it's a Linux IP routing issue.
>>> >>
>>> >> Note that the default route for IPs outside of your LTE network is
>>> >> probably going through Wifi or Ethernet and not through the tun that the
>>> >> UE creates.
>>> >>
>>> >> Make sure that the default route is over the tun. If you are not
>>> >> familiar with route and friend, try disabling all other network connections.
>>> >>
>>> >> Cheers
>>> >> Andre
>>> >
>>> > _______________________________________________
>>> > srslte-users mailing list
>>> > srslte-users at lists.softwareradiosystems.com
>>> > http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>
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