Failed to initiate SCTP socket. Attempting reconnection in 10 seconds when run srsenb

[sj5298]

Issue Description

Hi all,

I'm just starting out to establish an LTE network using srsRAN but I'm facing a problem when connecting eNB to the core network. I can't get my srsENB and srsEPC connected. To my understanding, it is the SCTP socket connection problem.

The error in srsENB: Failed to initiate SCTP socket. Attempting reconnection in 10 seconds

==== eNodeB started === Type to view trace Failed to initiate SCTP socket. Attempting reconnection in 10 seconds

Setup Details

My setup was listed as follows: 1x Raspberry pi as eNB 1x laptop with ubuntu 20.04 LTS running ePC and remotely controlled eNB via PUTTY 1x USRP B210 connect to raspberry pi 1x COTS UE (Samsung Galaxy Neo 3)

Expected Behavior

eNB successfully connect to ePC

Actual Behaviour

eNB is not connected to ePC. SCTP is working normally.

sctp 192.168.79.181:36412 LISTEN

Additional Information

##################################################################### srsENB configuration file #####################################################################

[enb] enb_id = 0x19B cell_id = 0x01 phy_cell_id = 1 tac = 0x0007 mcc = 208 mnc = 92 mme_addr = 192.168.79.181 gtp_bind_addr = 192.168.79.133 s1c_bind_addr = 192.168.79.133 n_prb = 50

tm = 1

nof_ports = 1

[enb_files] sib_config = sib.conf rr_config = rr.conf drb_config = drb.conf

[rf] dl_earfcn = 3625 tx_gain = 80 rx_gain = 40

device_name = UHD

device_args = auto

##################################################################### srsEPC configuration file #####################################################################

[mme] mme_code = 0x1a mme_group = 0x0001 tac = 0x0007 mcc = 208 mnc = 92 mme_bind_addr = 192.168.79.181 apn = test4g dns_addr = 8.8.8.8 encryption_algo = EEA0 integrity_algo = EIA1 paging_timer = 2 request_imeisv = false lac = 0x0006

[hss] db_file = user_db.csv

[spgw] gtpu_bind_addr = 192.168.79.181 sgi_if_addr = 172.16.0.1 sgi_if_name = srs_spgw_sgi max_paging_queue = 100

I hope someone can give me a solution to this problem.

Thanks.

[kaposnick]

Network traces (using wireshark) usually reveal the misconfiguration. It would be really helpful if you uploaded them.

[sj5298]

Thank you. Issue solved.

[athiravinod5gtechie]

Failed to bind SCTP socket to 172.22.0.37:0. Success srsgnb_zmq | srsGNB ERROR: Failed to create SCTP gateway.

I am getting this issue, while doing srsran setuo for 5g deployment using open5gs how to solve this?

[NagaJayaPraveen]

HI, this is praveen.

I have been trying to Download and build srsRAN 4G in ubuntu server, rasberry pi 4 device , but getting failure errors. please find the attached code

git clone https://github.com/srsRAN/srsRAN_4G.git cd srsRAN_4G mkdir build cd build cmake ../ make make test

Here is error message:

Message: error: ‘void __builtin_memmove(void, const void, long unsigned int)’ forming offset 36 is out of the bounds [0, 36] [-Werror=array-bounds=] 437 | __builtin_memmove(result, first, sizeof(_Tp) _Num); | ~~~^~~~~~~~~ cc1plus: all warnings being treated as errors

Thanks, Praveen

[eirini5th]

The PRACH detector will not meet the performance requirements with the configuration {Format B4, ZCZ 0, SCS 30kHz, Rx ports 1}. Lower PHY in dual executor mode.

--== srsRAN gNB (commit bcf941b34) ==--

Connecting to AMF on 127.0.1.100:38412 Failed to connect SCTP socket to 127.0.1.100:38412. error="Connection refused" timeout=0ms srsGNB ERROR: Failed to create SCTP gateway.

I'm just trying to follow the Running srsRAN guide from the project documentation but I get this error when I run sudo gnb -c gnb_rf_b200_tdd_n78_20mhz.yml