cnSGW-C GTPC Optimization with Inter-rack IPC Call Flow
This section describes the cnSGW-C GTPC Optimization with Inter-rack IPC call flow.

Step |
Description |
|||
---|---|---|---|---|
1 |
MME sends the S11 Modify Bearer Request to R1-GTPC-EP. |
|||
2 |
R1-GTPC-EP sends the S11 Modify Bearer Request to SGW-service.
|
|||
3 |
The following are sub-steps in the Alt SGW PGWc flow non-optimized scenario. |
|||
3a |
SGW-service sends the S5 or the S8 Modify Bearer Request to R1-GTPC-EP. |
|||
3b |
R1-GTPC-EP sends the S5 or the S8 Modify Bearer Request to R2-GTPC-EP. |
|||
3c |
R2-GTPC-EP sends the S5 or the S8 Modify Bearer Request to SMF-service. |
|||
3d |
SMF-service processes and sends the S5 or the S8 Modify Bearer Response to R2-GTPC-EP. |
|||
3e |
R2-GTPC-EP sends the Modify Bearer Response to R1-GTPC-EP. |
|||
3f |
R1-GTPC-EP sends the Modify Bearer Response to SGW-service. |
|||
4 |
Alternatively, the PGWc peer scenario is available in the remote list. The following are sub-steps in this scenario. |
|||
4a |
SGW-service sends the IPC Request to R2-GTPC-EP.
|
|||
4b |
R2-GTPC-EP sends the S5 or the S8 Modify Bearer Request to SMF-service. |
|||
4c |
SMF-service processes and sends the S5 or the S8 Modify Bearer Response to R2-GTPC-EP. |
|||
4d |
R2-GTPC-EP sends the IPC Response to SGW-service.
|
|||
5 |
SGW-service sends the Modify Bearer Response to R1-GTPC-EP. |
|||
6 |
R1-GTPC-EP sends the Modify Bearer Response to MME. |