Multi-path traffic selection for ports in overlay networks

Abstract

In some embodiments, a method receives a packet for a flow from a first application in a first workload to a second application in a second workload. The packet includes an inner header that includes layer 4 information for the first application. The method determines if a setting indicates an outer source port in an outer header should be generated using layer 4 information from the inner header. The setting is based on an analysis of packet types in the flow to determine if fragmented packets are sent. When the setting indicates the outer source port in the outer header should be generated using layer 4 information from the inner header, the method generates the outer source port using the layer 4 information for the first application from the inner header. The packet is encapsulated using the outer header, wherein the outer header includes the outer source port.

What is claimed is: 
     
         1 . A method comprising:
 receiving a packet for a flow from a first application in a first workload to a second application in a second workload, wherein the packet includes an inner header that includes layer 4 information for the first application;   determining if information for a setting indicates an outer source port in an outer header should be generated using layer 4 information from the inner header, wherein the information for the setting is based on an analysis of packet types in the flow to determine if fragmented packets are sent in the flow;   when the information for the setting indicates the outer source port in the outer header should be generated using layer 4 information from the inner header, generating the outer source port using the layer 4 information for the first application from the inner header; and   encapsulating the packet using the outer header, wherein the outer header includes the outer source port.