System, method and computer program for deploying an orchestration layer for a network based on network function virtualization (NFV)
According to one aspect of the present invention there is provided a system, method, and computer program product for recovering a structure of network function virtualization orchestration (NFV-O) domains, including: providing an initial structure of NFV-O domains, the initial structure representing assignment of network resources to the domains; providing a current structure of NFV-O domains, the current structure representing a modification of the initial structure due to reassignment of network resources between the domains; identifying at least one network resource reassigned by at least a first domain to at least a second domain; and instructing the at least second domain to surrender the network resource to the at least first domain; wherein the at least one network resource is a part of a communication network using network function virtualization (NFV-based network) orchestration; and wherein the NFV-based network comprises a plurality of network resources assigned to domains managed by respective NFV-O modules.
1. A method for recovering a structure of network function virtualization orchestration (NFV-O) domains, the method comprising:
identifying an initial structure of NFV-O domains representing assignment of network resources to the NFV-O domains, each of the NFV-O domains being managed by a respective NFV-O module that allocates the network resources assigned thereto to virtual network function (VNFs) instances;
identifying a current structure of NFV-O domains representing a modification of the initial structure due to reassignment of network resources between the NFV-O domains to support changing loads between the NFV-O domains;
determining, from the initial structure of NFV-O domains and the current structure of NFV-O domains, one of the network resources reassigned by a first NFV-O domain of the NFV-O domains to a second NFV-O domain of the NFV-O domains;
responsive to determining the one of the network resources reassigned by the first NFV-O domain to the second NFV-O domain, performing a recovery process including:
instructing a second NFV-O module managing the second NFV-O domain to release the identified one of the network resources for assignment back to the first NFV-O domain;
determining that a process including the modification of the initial structure and the recovery process is repeated;
responsive to determining that the process including the modification of the initial structure and the recovery process is repeated:
recording the repeated process,
analyzing the repeated process, and
forming, based on the analysis, an optimized initial structure of NFV-O domains.
2. A computer program product embodied on a non-transitory computer readable medium for recovering a structure of network function virtualization orchestration (NFV-O) domains, the computer program product comprising computer code for:
identifying an initial structure of NFV-O domains representing assignment of network resources to the NFV-O domains, each of the NFV-O domains being managed by a respective NFV-O module that allocates the network resources assigned thereto to virtual network function (VNFs) instances;
identifying a current structure of NFV-O domains representing a modification of the initial structure due to reassignment of network resources between the NFV-O domains to support changing loads between the NFV-O domains;
determining, from the initial structure of NFV-O domains and the current structure of NFV-O domains, one of the network resources reassigned by a first NFV-O domain of the NFV-O domains to a second NFV-O domain of the NFV-O domains;
responsive to determining the one of the network resources reassigned by the first NFV-O domain to the second NFV-O domain, performing a recovery process including:
instructing a second NFV-O module managing the second NFV-O domain to release the identified one of the network resources for assignment back to the first NFV-O domain;
determining that a process including the modification of the initial structure and the recovery process is repeated;
responsive to determining that the process including the modification of the initial structure and the recovery process is repeated:
recording the repeated process,
analyzing the repeated process, and
forming, based on the analysis, an optimized initial structure of NFV-O domains.
3. A system for recovering a structure of network function virtualization orchestration (NFV-O) domains, the system comprising:
one or more hardware processors for:
identifying an initial structure of NFV-O domains representing assignment of network resources to the NFV-O domains, each of the NFV-O domains being managed by a respective NFV-O module that allocates the network resources assigned thereto to virtual network function (VNFs) instances;
identifying a current structure of NFV-O domains representing a modification of the initial structure due to reassignment of network resources between the NFV-O domains to support changing loads between the NFV-O domains;
determining, from the initial structure of NFV-O domains and the current structure of NFV-O domains, one of the network resources reassigned by a first NFV-O domain of the NFV-O domains to a second NFV-O domain of the NFV-O domains;
responsive to determining the one of the network resources reassigned by the first NFV-O domain to the second NFV-O domain, performing a recovery process including:
instructing a second NFV-O module managing the second NFV-O domain to release the identified one of the network resources for assignment back to the first NFV-O domain;
determining that a process including the modification of the initial structure and the recovery process is repeated;
responsive to determining that the process including the modification of the initial structure and the recovery process is repeated:
recording the repeated process,
analyzing the repeated process, and
forming, based on the analysis, an optimized initial structure of NFV-O domains.
4. The method of claim 1 , wherein the optimized initial structure of NFV-O domains is different from the initial structure of NFV-O domains and is formed by reallocating the network resources among the NFV-O domains.