Describe the bug - GTP Tunnel sequence number issue
According to 3GPP TS 29.281
GTP Tunnel sequence number should be same
"The Sequence Number in a signalling response message shall be copied from the signalling request message that the GTP-U entity is replying to"
In your implementation, upf/src/up/up_path.c. line 105
._seqNum = (gtpRespHrd.flags & 0x02) ? htons(ntohs(opthrd->_seqNum) + 1) : 0,
there are something wrong for the seqNum +1
We are tying to attach a 5G SA UE to free5GC UPF (via one of the vendor's RAN & Core), the PDU session will be deleted by SMF, and the reason seems to be incorrect sequence number in GTP_Echo_Response.
after remove +1 for the sequence number, our UE attach is success and with internet access
Environment (please complete the following information):
Describe the bug - GTP Tunnel sequence number issue
According to 3GPP TS 29.281 GTP Tunnel sequence number should be same "The Sequence Number in a signalling response message shall be copied from the signalling request message that the GTP-U entity is replying to"
In your implementation, upf/src/up/up_path.c. line 105
._seqNum = (gtpRespHrd.flags & 0x02) ? htons(ntohs(opthrd->_seqNum) + 1) : 0,there are something wrong for the seqNum +1
We are tying to attach a 5G SA UE to free5GC UPF (via one of the vendor's RAN & Core), the PDU session will be deleted by SMF, and the reason seems to be incorrect sequence number in GTP_Echo_Response.
after remove +1 for the sequence number, our UE attach is success and with internet access
Environment (please complete the following information):