Address management in an overlay network environment
AssigneeInternational Business Machines Corporation
InventorsStephan Benny, Amitabha Biswas, Jayakrishna Kidambi
Life of this patent
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Abstract
Embodiments of the invention relate to overlay network address management. One embodiment includes an overlay gateway including an overlay network manager associated with a physical network. The overlay network manager prevents duplicate address assignment for overlay domains having a first sharing status and performs address translation for overlay domains having a second sharing status. Address translation is avoided for overlay domains having the first sharing status.
Claims18
A system comprising a computer processor, a computer-readable hardware storage medium, and program code embodied with the computer-readable hardware storage medium for execution by the computer processor to implement a method comprising:
- at an overlay network manager:
- managing a plurality of address spaces utilizing a table, wherein the table indicates, for a first address space of the plurality of address spaces, a first domain associated with a first overlay network the first address space is shared in and a second domain associated with a second overlay network the first address space is not shared in;
- and
- in response to a first assignment in the first domain of a first address in the first address space, detecting whether there is a duplicate assignment in a physical network based on the table, wherein the first domain shares the first address space with the physical network, and the first assignment is denied in response to detecting the duplicate assignment.
A method comprising:
- at an overlay network manager:
- managing a plurality of address spaces utilizing a table, wherein the table indicates, for a first address space of the plurality of address spaces, a first domain associated with a first overlay network the first address space is shared in and a second domain associated with a second overlay network the first address space is not shared in;
- and
- in response to a first assignment in the first domain of a first address in the first address space, detecting whether there is a duplicate assignment in a physical network based on the table, wherein the first domain shares the first address space with the physical network, and first assignment is denied in response to detecting the duplicate assignment.
A computer program product comprising a computer-readable hardware storage device having program code embodied therewith, the program code being executable by a computer to implement a method comprising:
- at an overlay network manager:
- managing a plurality of address spaces utilizing a table, wherein the table indicates, for a first address space of the plurality of address spaces, a first domain associated with a first overlay network the first address space is shared in and a second domain associated with a second overlay network the first address space is not shared in;
- and
- in response to a first assignment in the first domain of a first address in the first address space, detecting whether there is a duplicate assignment in a physical network based on the table, wherein the first domain shares the first address space with the physical network, and the first assignment is denied in response to detecting the duplicate assignment.
Dependencies are inferred from the claim text.