| Ankur Upadhyaya | 4f0e3b0 | 2022-10-06 11:15:39 -0600 | [diff] [blame] | 1 | .. |
| 2 | SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org> |
| 3 | SPDX-License-Identifier: Apache-2.0 |
| 4 | |
| 5 | .. _design_smf: |
| 6 | |
| 7 | SMF Design Overview |
| 8 | =================== |
| 9 | |
| 10 | .. image:: ../_static/images/CN-SMF.png |
| 11 | :width: 500px |
| 12 | |
| 13 | UPF-Adapter |
| 14 | ----------- |
| 15 | |
| 16 | As UPF may not support connections from multiple SMF instances with same Node-Id, |
| 17 | UPF-Adapter layer has been introduced. |
| 18 | |
| 19 | * UPF-Adapter acts like Mux-Demux for PFCP messages between multiple SMF instances and UPF. |
| 20 | |
| 21 | * SMF sends custom PFCP msg to UPF-Adapter if UPF-Adapter is deployed. |
| 22 | |
| 23 | * The UPF-Adapter intercepts and modifies certain fields before sending PFCP msg to actual UPF. |
| 24 | |
| 25 | * Similar handling is done for the response from UPF towards SMF. |
| 26 | |