FASTER IP ADDRESS ALLOCATION IN A HYBRID CLOUD ENVIRONMENT USING SUBNET SELECTIVE RANDOMIZATION

摘要

Multiple tenants within a hybrid cloud computing system may need IP addresses to communicate over a computer network external to the hybrid cloud system (such as the Internet). IP addresses are a scarce resource, and each address can only be assigned to a single tenant. With multiple tenants competing for IP addresses, many request collisions may occur if tenants request IP addresses in a naive manner, such as by requesting the next available IP address numerically. When a collision occurs, a tenant must request a different IP address. Instead, tenants request random IP addresses within a particular subnet in a random manner, thereby reducing the number of collisions that occur and improving the latency associated with requesting an IP address.

主权项

1. A method for allocating Internet Protocol (IP) addresses, the method comprising:
identifying, by a first gateway operating within a first cloud computing environment, a current subnet that includes at least one available IP address for allocation from a global pool of IP addresses that is in communication with the first gateway and a second gateway operating within a second cloud computing environment that is securely separate from the first cloud computing environment; randomly selecting an available IP address from the current subnet for allocation; and requesting allocation of the available IP address from the global pool of IP addresses.