VNFM resolution of split-brain virtual network function components

A method, comprising:

• receiving a VNFCI status notification resumption with an active state;
• retrieving a timestamp of the VNFCI state change to active;
• retrieving a timestamp of a peer VNFCI state change to active;
• checking with a VIM to determine if the VNFCI network isolated while active;
• checking with the VIM to determine if the peer VNFCI network isolated while active;
• sending a first state change request message with standby to the peer VNFCI when one or more of:
• the peer VNFCI was network isolated, and the VNFCI was not network isolated;
• sending a second state change request message with standby to the peer VNFCI when one or more of:
• the VNFCI is not the preferred standby instance, and the peer VNFCI was not network isolated, and the VNFCI was not network isolated;
• starting a first retry timer for the peer VNFCI when one or more of:
• the first state change request message is sent, and the second state change request message is sent;
• sending a third state change request message with standby to the VNFCI when one or more of:
• the VNFCI is the preferred standby instance, and the peer VNFCI was network isolated, and the VNFCI was network isolated;
• sending a fourth state change request message with standby to the VNFCI when one or more of:
• the peer VNFCI was not network isolated, and the VNFCI was network isolated;
• and
• starting a second retry timer for the VNFCI when one or more of:
• the third state change request message is sent, and the fourth state change request message is sent.

A non-transitory computer readable medium comprising instructions, that when read by a processor, cause the processor to perform:

• receiving a VNFCI status notification resumption with an active state;
• retrieving a timestamp of the VNFCI state change to active;
• retrieving a timestamp of a peer VNFCI state change to active;
• checking with a VIM to determine if the VNFCI network isolated while active;
• checking with the VIM to determine if the peer VNFCI network isolated while active;
• sending a first state change request message with standby to the peer VNFCI when one or more of:
• the peer VNFCI was network isolated, and the VNFCI was not network isolated;
• sending a second state change request message with standby to the peer VNFCI when one or more of:
• the VNFCI is not the preferred standby instance, and the peer VNFCI was not network isolated, and the VNFCI was not network isolated;
• starting a first retry timer for the peer VNFCI when one or more of:
• the first state change request message is sent, and the second state change request message is sent;
• sending a third state change request message with standby to the VNFCI when one or more of:
• the VNFCI is the preferred standby instance, and the peer VNFCI was network isolated, and the VNFCI was network isolated;
• sending a fourth state change request message with standby to the VNFCI when one or more of:
• the peer VNFCI was not network isolated, and the VNFCI was network isolated;
• and
• starting a second retry timer for the VNFCI when one or more of:
• the third state change request message is sent, and the fourth state change request message is sent.