Network configuration health check

A non-transitory computer-readable storage medium that includes a set of instructions which, in response to execution by a processor of a host, cause the processor to perform a method of network configuration health check, wherein the host includes multiple network interface controllers (NICs), the method comprising:

• selecting, from the multiple NICs, a source NIC and one or more destination NICs;
• based on a first network configuration of the host, generating one or more unicast probe packets that are addressed from the source NIC to the respective one or more destination NICs;
• sending the one or more unicast probe packets to the respective one or more destination NICs from the source NIC via a physical switch connected to the host;
• and
• in response to receiving the one or more unicast probe packets from the physical switch, determining that there is a match between the first network configuration and a second network configuration of the physical switch, but otherwise, determining that there is a mismatch between the first network configuration and second network configuration.

A host configured to perform network configuration health check, the host comprising:

• a processor;
• multiple network interface controllers (NICs);
• and
• a non-transitory computer-readable medium having stored thereon instructions that, when executed by the processor, cause the processor to:
• select, from the multiple NICs, a source NIC and one or more destination NICs;
• based on a first network configuration of the host, generate one or more unicast probe packets that are addressed from the source NIC to the respective one or more destination NICs;
• send the one or more unicast probe packets to the respective one or more destination NICs from the source NIC via a physical switch connected to the host;
• and
• in response to receiving the one or more unicast probe packets from the physical switch, determine that there is a match between the first network configuration and a second network configuration of the physical switch, but otherwise, determine that there is a mismatch between the first network configuration and second network configuration.