Session Replacement
A Session Replacement (SRIR) is required when peer allocates same GTP-U TEID.
UPF sends SRIR report indicating to delete old session with same TEID. cnSGW-C uses GTPU path failure configuration for SRIR request processing.
Interface |
Configuration |
TEID |
Action |
---|---|---|---|
S1U/S5U |
Local Purge |
Default |
Send SxDeleteSession Purge locally |
Dedicated |
Send SxMod (Remove Traffic Endpoint) Purge Bearer locally |
||
Signal Peer |
Default |
Send SxMod (Drop) DBR/DSR SxDelete |
|
Dedicated |
Send DBR/DBC (Async) SxMod (Remove Traffic Endpoint) |
||
IDFT |
NA |
NA |
Send SxMod (Remove IDFT Traffic Endpoint)- async Purge Bearer locally |