No NAS signalling session found

Q/A
#1

Fresh clone of free5gc v3.2.1, with every test in the guide passing but TestNon3GPP.

This is the error I get when running TestNon3GPP: (both screenshot and text included)

image
image2118×644 55.3 KB

2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Encoding IKE message
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Encoding IKE payloads
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Encrypted] marshal(): Start marshalling
2023-07-10T15:16:42-04:00 [INFO][N3IWF][NGAP] [N3IWF] Send Initial Context Setup Response
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Decoding IKE message
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Decoding IKE payloads
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Encrypted] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Encoding IKE message
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Encoding IKE payloads
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Encrypted] marshal(): Start marshalling
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] Decoding IKE payloads
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Authentication] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Configuration] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [SecurityAssociation] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [TrafficSelector] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [TrafficSelector] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Notification] unmarshal(): Start unmarshalling received bytes
2023-07-10T15:16:42-04:00 [INFO][N3IWF][IKE] [Notification] unmarshal(): Start unmarshalling received bytes
#    non3gpp_test.go:1402: Get Authentication from N3IWF
2023-07-10T15:16:42-04:00 [INFO][AMF][NGAP][10.200.200.1/1.2.3.4/192.168.33.5/1.1.1.1/10.8.34.229/192.168.128.1/192.168.129.1/10.60.0.1/10.200.200.2/192.168.127.1/10.0.0.1:49705][AMF_UE_NGAP_ID:1] Handle Initial Context Setup Response
2023-07-10T15:16:42-04:00 [INFO][AMF][NGAP][10.200.200.1/1.2.3.4/192.168.33.5/1.1.1.1/10.8.34.229/192.168.128.1/192.168.129.1/10.60.0.1/10.200.200.2/192.168.127.1/10.0.0.1:49705][AMF_UE_NGAP_ID:1] Send Downlink Nas Transport
2023-07-10T15:16:42-04:00 [INFO][N3IWF][NGAP] [N3IWF] Handle Downlink NAS Transport
2023-07-10T15:16:42-04:00 [WARN][N3IWF][NGAP] No NAS signalling session found, retry...
2023-07-10T15:16:42-04:00 [WARN][N3IWF][NGAP] No NAS signalling session found, retry...
2023-07-10T15:16:43-04:00 [WARN][N3IWF][NGAP] No connection found for UE to send NAS message. This message will be cached in N3IWF
#    non3gpp_test.go:1484: dial tcp 10.0.0.27:0->10.0.0.1:20000: connect: connection timed out
#    non3gpp_test.go:1465: Delete XFRM interface: ipsec-default
--- FAIL: TestNon3GPPUE (130.70s)
FAIL
exit status 1
FAIL    test    131.331s
2023-07-10T15:18:55-04:00 [INFO][UPF][Main] Shutdown UPF ...

Some relevant commands while non3gpp_test.go was trying to connect:

ip a:

image
image981×405 17.8 KB

sudo ip netns exec UEns ip a:

image
image965×401 17.2 KB

sudo ip netns exec UPFns ip a:

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image1023×437 18.6 KB

Please let me know if you need anything else, and Thank You so much!

#2

hi @KrishnanS2006,
I can’t reproduce this problem with freshly installed v3.2.1 free5GC, maybe you should try to reinstall free5GC v3.3.0(recommend) or v3.2.1 following this guide. If this problem still appears, please provide your whole log and your configs.
BRs,
Linpoyi

#3

Hi ,
since there haven’t been any replies from you, this topic is closed by admin.
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Thanks.

Admin

#4