Open5GS-Traces » History » Version 14
jolly, 01/29/2024 02:23 PM
| 1 | 1 | jolly | h1. Open5GS-Traces |
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| 2 | |||
| 3 | 7 | jolly | h1. !!!TBD!!! |
| 4 | 5 | jolly | |
| 5 | 8 | jolly | h2. Setup of this example |
| 6 | |||
| 7 | * Ericsson RBS 6402 (eNodeB) |
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| 8 | * Open5GS (4G network elements) |
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| 9 | * OsmoHLR with OsmoDia2GSUP (HSS) |
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| 10 | * OsmoMSC (SMS) |
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| 11 | |||
| 12 | 9 | jolly | |
| 13 | 8 | jolly | h2. Idle |
| 14 | 1 | jolly | |
| 15 | 10 | jolly | When all phones are Idle, one will see the following trace with Wireshark on the link between eNodeB (Ericsson RBS) and MME (Open5GS). |
| 16 | 8 | jolly | |
| 17 | 12 | jolly | !wireshark_enb_idle.png! |
| 18 | 8 | jolly | |
| 19 | The eNodeB (IP 10.0.15.117) is connected to MME (IP 10.0.15.1) via SCTP. Also the eNodeB syncs its clock to NTP server (IP 10.0.15.1). |
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| 20 | |||
| 21 | 1 | jolly | The network 10.0.15.0/24 is the RAN network in this example. |
| 22 | 9 | jolly | |
| 23 | |||
| 24 | h2. 4G Attachment |
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| 25 | |||
| 26 | 1 | jolly | A 4G phone is attached to the network, using SIM cards that is registered in the HSS. The APN name used is "internet". |
| 27 | 10 | jolly | |
| 28 | 13 | jolly | !wireshark_enb_attach.png! |
| 29 | 1 | jolly | |
| 30 | 12 | jolly | Lets go into detail: |
| 31 | |||
| 32 | h3. Attach request |
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| 33 | 1 | jolly | |
| 34 | 14 | jolly | !wireshark_enb_attach_attach_request.png! |
| 35 | 1 | jolly | |
| 36 | 14 | jolly | h3. ESM information request |
| 37 | |||
| 38 | !wireshark_enb_attach_ESM_infomation_request.png! |
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| 39 | |||
| 40 | h3. ESM information response |
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| 41 | |||
| 42 | !wireshark_enb_attach_ESM_infomation_response.png! |
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| 43 | |||
| 44 | h3. Attach accept |
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| 45 | |||
| 46 | !wireshark_enb_attach_attach_accept.png! |
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| 47 | |||
| 48 | h3. Attach complete |
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| 49 | |||
| 50 | !wireshark_enb_attach_attach_complete.png! |
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| 51 | |||
| 52 | |||
| 53 | 10 | jolly | h2. 4G Detachment |
| 54 | |||
| 55 | 1 | jolly | The 4G phone is turned off or the airplane mode is turned on. |
| 56 | 10 | jolly | |
| 57 | 1 | jolly | !wireshark_enb_detach.png! |
| 58 | 14 | jolly | |
| 59 | Lets go into detail: |
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| 60 | |||
| 61 | h.3 Detach Reqeust |
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| 62 | |||
| 63 | !wireshark_enb_detach_detach_request.png! |
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| 64 | |||
| 65 | h.3 UE context release |
