GTP-C Restoration on PGW-C/SMF

PGW-C/SMF can detect that there is a change in recovery value of SGW. PGW-C/SMF can detect this value from the following messages:

  • Create Session Request

  • Modify Bearer Request

  • Create Bearer Response

  • Echo Response

If PGW-C/SMF detects that there is a change in recovery value, then it initiates the cleanup of all the PDN connections associated with the SGW.

GTP Restoration due to SGW Restart