[srsran-users] Problem connecting srsENB and srsEPC

[Robert Falkenberg]

Hi,

in the |enb.conf|, the |mme_addr| points to localhost:

|##################################################################### # 
srsENB configuration file 
##################################################################### 
##################################################################### # 
eNB configuration # ... # mme_addr: IP address of MME for S1 connection 
... 
##################################################################### 
[enb] ... mme_addr = 127.0.0.20 ... |

Also in the |epc.conf|, the MME listens on the loopback device:

|##################################################################### 
#                   srsEPC configuration file 
##################################################################### 
##################################################################### # 
MME configuration # ... # mme_bind_addr:    IP bind addr to listen for 
eNB S1-MME connections ... # 
##################################################################### 
[mme] ... mme_bind_addr = 127.0.0.20 ... |

Since you run those applications on different machines, please set those 
values to the IP address of the network interface of the EPC through 
which the eNB can contact the EPC. For example, if your local network is 
192.168.0.0/24, the eNB has 192.168.0.10 and the EPC has 192.168.0.20, 
please set both, |mme_addr| and |mme_bind_addr|, to 192.168.0.20

Best regards,
Robert

On 05.01.23 05:18, SHI JIE SEAH wrote:

> 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, hence, I'm unable to 
> navigate the LTE network in my COTS UE.
>
> To my understanding, it is the SCTP socket connection problem.
>
> My setup was listed as follows:
>
> 1x Raspberry pi as enb
>
> 1x laptop with ubuntu 20.04 LTS running EPC and remotely controlled 
> raspberry pi via PUTTY
>
> 1x USRP B210 connect to raspberry pi
>
> 1x COTS UE (Samsung Galaxy Neo 3)
>
> The error in srsENB:
>
> Failed to initiate SCTP socket. Attempting reconnection in 10 seconds
>
> ==== eNodeB started ===
>
> Type <t> to view trace
>
> Failed to initiate SCTP socket. Attempting reconnection in 10 seconds
>
> The screenshot of srsEPC, srsENB, USIM card details and configuration 
> files are attached.
>
> I hope someone can give me a solution to this problem.
>
> Thanks.
>
> Seah
>
>
> _______________________________________________
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> srsran-users at lists.srsran.com
> https://lists.srsran.com/mailman/listinfo/srsran-users

​
-- 


      RobertFalkenberg

Senior Engineer

Software Radio Systems

	

	
	

	

	robert at srs.io <mailto:robert at srs.io>

	www.srs.io <//www.srs.io>

	Dortmund, Germany




	
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