Resilient hashing is a hardware-based capability available in ExtremeXOS 21.1 , supported in X670-G2, X770 and stack that contains X670-G2 and X770. Resilient hashing minimizes the remapping of flows to aggregator member ports during aggregator member changes. Resilient hashing incorporates a resilient hashing engine to associate flows with physical ports. In the case of link failure, only the affected flows are redistributed uniformly across the remaining good physical links. Flows originally using the good links remain unaffected and are not reassigned to a new link.
LAG distribution depends on the number of flows, the number of ports in each LAG, and traffic pattern specifics. For incrementing packet fields, resilient hashing can result in less even distribution than without resilient hashing.
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